Bolthole Index

Grand Isle County, Vermont

Building permits, zoning and septic rules in Grand Isle County, Vermont

76Index Score / 100
#13 of 14 in Vermont

Grand Isle County, Vermont has no county building department or countywide zoning — Vermont handles both at the town level12. The county has five towns, and this guide's reviewed rules cover only the Town of Grand Isle; the other four towns — Alburgh, Isle La Motte, North Hero, and South Hero — set their own separate zoning3. Every septic and drinking-water system in the county still needs a Vermont DEC Wastewater System and Potable Water Supply Permit before construction45.

At a glance

Building permit
No county program; Vermont has no county building department, and permits (where required) come from the town, not the county1
Zoning
No countywide zoning; each of the county's five towns sets its own — this guide's rules cover only the Town of Grand Isle2
Septic
Vermont DEC Wastewater System and Potable Water Supply Permit, administered from the Essex Regional Office4
RV living (Town of Grand Isle)
No zoning permit needed if >25 ft from the property line, >40 ft from a road right-of-way, and occupied 6 months or less per year6
Owner-builder
An owner who is also the builder and will occupy the home is exempt from Vermont's Residential Building Energy Standards, not from any town permit78
Building height (Town of Grand Isle)
35 feet above average natural grade, with a Development Review Board variance possible9
Certificate of occupancy (Town of Grand Isle)
The Town does not issue certificates of occupancy or compliance3
Septic soil difficulty
0% of the county's soils are free of severe limits for a conventional drain field10

Who to call

Zoning

Town of Grand Isle Zoning Administrative Officer

Zoning permit intake and enforcement, subdivision and Development Review Board referrals for land inside the Town of Grand Isle only; the other four towns in Grand Isle County (Alburgh, Isle La Motte, North Hero, South Hero) run their own separate zoning offices

(802) 372-8816

9 Hyde Road, Grand Isle, VT 05458

Septic permits

Vermont DEC Wastewater System & Potable Water Supply Program, Essex Regional Office

Wastewater System and Potable Water Supply Permits (septic and well/water-supply approvals) for all five towns in Grand Isle County

802-751-0130

111 West Street, Essex Junction, VT 05452

Contact details are copied from each office’s official page and were checked against it on September 23, 2026.

Do you need a building permit in Grand Isle County, Vermont?

Vermont has no statewide residential building code and Grand Isle County runs no building department of its own, so there is no county building permit to apply for anywhere in the county1. An owner-occupied single-family residence is specifically excluded from the state's public-building fire and safety code, unless it is used for a purpose that makes it a "public building" under state law11. That does not mean construction is unregulated: in a town that has adopted zoning bylaws, no land development may begin without a permit from that town's administrative officer12. In the Town of Grand Isle, that means a zoning permit from the town's Zoning Administrative Officer, applied for with a completed application, fee, and plot plan, with a 30-day action period once the application is complete13. The Town of Grand Isle does not issue a certificate of occupancy or certificate of compliance once work is done3. The county's other four towns — Alburgh, Isle La Motte, North Hero, and South Hero — each administer their own separate zoning bylaws, which this guide has not reviewed, so confirm requirements directly with whichever town your land sits in.

Who is the Grand Isle County building department, and how do you reach them?

There is no Grand Isle County building department to call, because Vermont counties do not run building or zoning programs — that authority sits with the towns12. For land inside the Town of Grand Isle, the office to contact first is the Zoning Administrative Officer, at 9 Hyde Road, Grand Isle, VT 05458, phone (802) 372-8816, open Monday through Friday from 9:30 am to 12:30 pm14. That office is described on the town's own site as "the first person contacted when property development is proposed" and it issues zoning permits, enforces the zoning bylaws, and refers larger applications to the town's Development Review Board14. If your land is in Alburgh, Isle La Motte, North Hero, or South Hero instead, the Town of Grand Isle office has no authority over it; reach out to that town's own office directly, since this guide has not reviewed their separate bylaws.

Does Grand Isle County have zoning?

No county-level zoning applies anywhere in Grand Isle County; Vermont zoning is a municipal power exercised by each town under state statute, and every zoning bylaw sets its own permitted districts, dimensional standards, and permit process locally215. Because the county has five separate towns, that means five separate rulebooks, and only the Town of Grand Isle's bylaws are reflected here3. Inside the Town of Grand Isle, structures generally may not exceed 35 feet above average natural grade, though the Development Review Board can approve greater height or, conversely, a lower cap to protect a scenic view or enable solar access9. Splitting land or developing it also triggers subdivision review in the Town of Grand Isle, with wastewater disposal for any subdivision routed through the state's Wastewater System and Potable Water Supply Rules16. One accessory dwelling unit is allowed within or attached to a single-family home on an owner-occupied lot, capped at 30% of the home's habitable floor area, provided the property has sufficient wastewater capacity — a rule that tracks the statewide floor Vermont sets for every town1718. Common agricultural tillage, ground care, gardening, and cemetery excavating are exempt from the Town of Grand Isle's zoning bylaws entirely19.

How do septic permits work in Grand Isle County?

Every septic system in Grand Isle County needs a state permit, not a town or county one: Vermont law requires a permit from the Secretary before constructing, replacing, or modifying a potable water supply or wastewater system45. That permit is administered by the Vermont DEC Wastewater System and Potable Water Supply Program's Essex Regional Office, which covers all five towns in Grand Isle County20. A permit is not considered valid for a finished system until DEC receives a certification from a licensed installer or designer that the system was installed as permitted and was inspected21. Soils here make this a real design question, not paperwork: USDA data shows 0% of Grand Isle County's soils are free of severe limitations for a conventional drain field, so plan on a site evaluation and likely an engineered or alternative system10. Vermont's off-grid exemption is narrow: only a primitive camp with no interior plumbing beyond a sink, used no more than three consecutive weeks and 60 total days a year, is exempt from permitting, and that exemption never applies to a seasonal camp22.

Can you live in an RV or tiny home on your land in Grand Isle County?

In the Town of Grand Isle specifically, an RV can be occupied by the owner, or by a relative or friend with the owner's permission, without a zoning permit, as long as it sits more than 25 feet from every property boundary, more than 40 feet from the near edge of any road right-of-way, and is occupied no more than six months in any twelve-month period6. Go past that six-month mark, or site the RV so it is not readily movable, and it is reclassified as a dwelling that must meet every zoning bylaw requirement that applies to houses, including permitting23. A statewide rule lets Vermont recreational campgrounds host transient RV stays, but that framework governs licensed campgrounds, not occupancy of your own rural parcel, so don't read it as permission to live in an RV on raw land24. Manufactured, mobile, and modular homes are treated in the Town of Grand Isle as single-family dwellings subject to the same zoning requirements as a site-built house, and a mobile home is otherwise only allowed in an approved mobile home park25. No official source reviewed for this guide sets a tiny-home-specific rule for the Town of Grand Isle or the county's other four towns, so ask the applicable town's zoning office how it would classify one before you buy.

Building a home in Grand Isle County: the steps, in order

First, confirm which of the county's five towns your parcel sits in, since Grand Isle County itself sets none of these rules and this guide only covers the Town of Grand Isle in detail2. Second, if you're in the Town of Grand Isle, contact the Zoning Administrative Officer and submit a completed application, fee, and plot plan; the office has 30 days to act once your materials are complete1413. Third, apply for your Wastewater System and Potable Water Supply Permit through the Essex Regional Office before you build, since a new or modified system can't be built without it205. Fourth, don't schedule closing on the septic side until your installer or a licensed designer certifies the completed system to DEC — the permit isn't valid until that happens21. Fifth, if your driveway or private road will serve three or more dwellings, get site plan and conditional-use approval from the Town of Grand Isle's Development Review Board before construction26. Sixth, if any part of your land is in a mapped flood hazard area, apply for a floodplain development permit; the administrative officer must forward your application to Vermont's Agency of Natural Resources, and the permit can't issue until 30 days pass or ANR comments, whichever comes first2728. Seventh, if your driveway connects to a state or town highway, get a written entrance permit from the Agency (state highways) or the town's legislative body (town highways) before you build the approach29.

What to check before you buy land in Grand Isle County

Confirm which town governs the parcel first — Alburgh, Grand Isle, Isle La Motte, North Hero, or South Hero — since Grand Isle County itself sets no zoning, and only the Town of Grand Isle's rules are detailed in this guide2. Budget hard for septic: 0% of the county's soils carry no severe limitation for a conventional drain field, which points toward an engineered or alternative system and an early site evaluation with a licensed designer10. The terrain itself is generally favorable for building — 97.3% of the county sits at 15% slope or less — and the county is lightly wooded at 19.3% forest cover, so clearing costs are usually modest3031. Check FEMA flood maps before you buy, since a flood hazard designation triggers the floodplain development permit and a mandatory referral to the state27. Weather runs wet and cool for a rural property: about 38.8 inches of precipitation a year, with severe drought striking only about 0.3% of years3233. Property taxes run high relative to many rural counties, with an effective rate near 1.4% and a median bill around $4,927 a year against a typical home value of about $459,996343536.

Watch-outs

  • Grand Isle County has five towns with five separate zoning bylaws (Alburgh, Grand Isle, Isle La Motte, North Hero, South Hero); this guide's town-level detail covers only the Town of Grand Isle, so confirm the rules for your specific town before you rely on any zoning answer here2.
  • Don't confuse the Town of Grand Isle (a single town) with Grand Isle County (the county of the same name that contains it and four other towns) — the county runs no zoning or building program of its own2.
  • Vermont's RV-in-campground statute governs licensed campgrounds, not occupancy of your own rural land; for the Town of Grand Isle, the applicable rule is the six-month, 25-foot/40-foot setback provision, and other towns may differ246.

Sources

  1. Vermont ACCD - Planning Statutes and Rules (Title 24 Ch. 117) (2026 county census)
  2. Vermont ACCD - Planning Statutes and Rules (Title 24 Ch. 117) (2026 county census)
  3. Grand Isle Zoning Bylaws and Subdivision Regulations, amended October 25, 2021, quoted and re-checked
  4. Vermont DEC - Wastewater System & Potable Water Supply Program (2026 county census)
  5. 10 V.S.A. § 1973 — Permits (Vermont statewide rule), quoted and re-checked
  6. Grand Isle Zoning Bylaws and Subdivision Regulations, amended October 25, 2021, quoted and re-checked
  7. 30 V.S.A. § 51 — Residential building energy standards (2026 county census)
  8. 30 V.S.A. § 51 — Residential building energy standards (Vermont statewide rule), quoted and re-checked
  9. Grand Isle Zoning Bylaws and Subdivision Regulations as Amended October 25, 2021, quoted and re-checked
  10. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  11. 20 V.S.A. § 2730 — Definitions (Vermont statewide rule), quoted and re-checked
  12. 24 V.S.A. § 4449 — Zoning permit, certificate of occupancy, and municipal land use permit (Vermont statewide rule), quoted and re-checked
  13. Grand Isle Zoning Bylaws and Subdivision Regulations as Amended October 25, 2021, quoted and re-checked
  14. Town of Grand Isle Zoning Administrative Officer (grandislevt.org)
  15. 24 V.S.A. § 4411 — Zoning bylaws (Vermont statewide rule), quoted and re-checked
  16. Grand Isle Zoning Bylaws and Subdivision Regulations as Amended October 25, 2021, quoted and re-checked
  17. Grand Isle Zoning Bylaws and Subdivision Regulations, amended October 25, 2021, quoted and re-checked
  18. 24 V.S.A. § 4412 — Required provisions and prohibited effects (Vermont statewide rule), quoted and re-checked
  19. Grand Isle Zoning Bylaws and Subdivision Regulations as Amended October 25, 2021, quoted and re-checked
  20. Vermont DEC Wastewater System & Potable Water Supply Program, Essex Regional Office (dec.vermont.gov)
  21. 10 V.S.A. § 1973 — Permits (Vermont statewide rule), quoted and re-checked
  22. 10 V.S.A. § 1973 — Permits (Vermont statewide rule), quoted and re-checked
  23. Grand Isle Zoning Bylaws and Subdivision Regulations, amended October 25, 2021, quoted and re-checked
  24. 9 V.S.A. § 4410 — Campgrounds; removal (Vermont statewide rule), quoted and re-checked
  25. Grand Isle Zoning Bylaws and Subdivision Regulations, amended October 25, 2021, quoted and re-checked
  26. Grand Isle Zoning Bylaws and Subdivision Regulations as Amended October 25, 2021, quoted and re-checked
  27. Grand Isle Zoning Bylaws and Subdivision Regulations as Amended October 25, 2021, quoted and re-checked
  28. 24 V.S.A. § 4424 — Flood or hazard area bylaws (Vermont statewide rule), quoted and re-checked
  29. 19 V.S.A. § 1111 — Permitted use of highway rights-of-way (Vermont statewide rule), quoted and re-checked
  30. Share of land at 15% slope or less: Bolthole Index county data
  31. Wooded share of land: Bolthole Index county data
  32. Annual precipitation: Bolthole Index county data
  33. Share of years in severe drought: Bolthole Index county data
  34. Effective property tax rate: Bolthole Index county data
  35. Median property tax bill: Bolthole Index county data
  36. Typical home value (Zillow): Bolthole Index county data

Written September 23, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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County locator

Grand Isle County in Vermont

76
County map
Grand Isle County highlighted among the Vermont counties · colored by Index score

How Grand Isle County scores

Seclusion49100% ev.
Self-Sufficiency6294% ev.
Admin Boringness82100% ev.
Durability73100% ev.
Property Autonomy59100% ev.
Carry Cost52100% ev.

Evidence strength: 99%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$460kTypical home
1.4%Property tax
$7,445Land / acre
38.8"Annual rain
0.3% of yrsSevere drought
0.7 / yr (+0.7)Mid-century 100°F days
10.2 daysMid-century dry spell
1.46" (+9.3%)Mid-century 1-day rain
1.55×Wildfire change factor
100%Forward climate coverage
$1,213Home insurance / yr
-0.8% / yrInsurance growth
0.77%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
54,139People within 30 min
667,944People within 2 hr
83,667Radius comparison (15 mi)
91.3People / sq mi
4.6%Federal land
97.3%Land at 15% slope or less
0%Septic soil without severe limits
0 acWorkable land screen
19.3%Wooded land
85.7 tonsBiomass / forest ac
45.4°FAvg temp

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Answers from the rulebook for Grand Isle County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Grand Isle County rules

  • Building permitNot required

    Vermont has no statewide residential building code and no county building department; any building/zoning permit for a single-family home is issued by the town's zoning administrator, not by Grand Isle County. (Note: a state DEC Wastewater/Potable Water permit is separately required for essentially all construction.)

    Vermont ACCD - Planning Statutes and Rules (Title 24 Ch. 117) ↗Scouted from the county site, not yet independently re-checked

  • County-wide zoningAbsent

    Zoning in Vermont is administered at the municipal (town) level under Title 24 Chapter 117; there is no county zoning in Grand Isle County.

    Vermont ACCD - Planning Statutes and Rules (Title 24 Ch. 117) ↗Scouted from the county site, not yet independently re-checked

  • Who permits septicVermont DEC - Wastewater System & Potable Water Supply Program

    Vermont DEC (Agency of Natural Resources) issues the Wastewater System and Potable Water Supply Permit required for essentially all new construction with soil-based systems under 6,500 gpd, covering Grand Isle County via its regional office.

    Vermont DEC - Wastewater System & Potable Water Supply Program ↗Scouted from the county site, not yet independently re-checked

Vermont rules that apply here

  • Owner-builder exemptionAvailable (with conditions)

    Residential construction exempt from Vermont Residential Building Energy Standards when the owner is also the builder and occupies the dwelling.

    • The owner must be the builder.
    • The residential construction must be used as the owner's dwelling.
    • The owner must direct the construction details concerning installation of materials that do not comply with RBES.
    • Before entering a binding purchase and sales agreement, the owner must disclose in writing to a prospective buyer the nature and extent of RBES noncompliance and itemize the noncompliant measures.
    • Any certificate under this exemption must be recorded in the property land records and sent to the Department of Public Service within 30 days after the owner's sale of the property.
    • This is an RBES exemption and does not establish a general exemption from municipal permits or other applicable building requirements.
    “The following residential construction shall not be subject to the requirements of this subchapter: [...] (4) Residential construction by an owner, if all of the following apply:”
  • Building code adoptedPartial

    Vermont's statewide building-code framework, including the Vermont Fire & Building Safety Code for public buildings and statutory exemptions for specified residential, farm, child-care, and home-business categories.

    • The 2025 Vermont Fire & Building Safety Code applies to public buildings.
    • The rule exempts single family owner occupied homes, small working farms, registered day care facilities, and some home businesses.
    • The rule includes minimum safety requirements addressing fire, explosion, hazardous materials, dangerous structural conditions, carbon monoxide, and other listed subjects.
    • Municipalities may establish building codes and regulations, but municipal requirements must be consistent with the current state rules and standards adopted under 20 V.S.A. chapter 173, subchapter 2.
    “The 2025 Vermont Fire & Building Safety Code establishes the minimum standards to protect the public from the risks of fire, explosion, hazardous materials, dangerous structural conditions and carbon monoxide poisoning within public buildings. [...] Several entities are exempted from this rule and include single family owner occupied homes, small working farms, registered day care facilities and some home businesses.”
    2 more reviewed findings on this topic
    • Adopted (with conditions) — Public buildings in Vermont subject to the 2025 Vermont Fire & Building Safety Code.
      “The 2025 Vermont Fire & Building Safety Code establishes the minimum standards to protect the public from the risks of fire, explosion, hazardous materials, dangerous structural conditions and carbon monoxide poisoning within public buildings. These amended rules provide updates and incorporate more recent editions of the same national codes and standards that are currently adopted.”
    • Not adopted — Owner-occupied single-family residences in Vermont, unless the residence is used for a purpose that makes it a public building under 20 V.S.A. § 2730(a).
      “The term “public building” does not include: (1) An owner-occupied single-family residence, unless used for a purpose described in subsection (a) of this section.”
  • InspectionsLimited

    Premises and buildings subject to Vermont fire-prevention and building-code rules administered by the Commissioner of Public Safety.

    • The Commissioner shall conduct inspections to ensure adopted rules are observed.
    • Inspection priorities may be based on relative fire risks of particular premises.
    • The Commissioner may also inspect construction for conformity with approved plans and drawings.
    “The Commissioner may also conduct inspections to ensure that buildings are constructed in accordance with approved plans and drawings.”
  • Zoning districtsPublished (with conditions)

    Vermont municipal zoning bylaws and zoning maps; the State statute authorizes and describes the framework for local zoning districts but does not publish each municipality's actual district map or district boundaries.

    • Municipal zoning bylaws may classify different uses and structures into separate districts shown on a zoning map made part of the bylaws.
    • Actual district names, boundaries, permitted uses, conditional uses, and dimensional standards are local and must be obtained from the relevant municipality.
    • Special overlay districts may supplement or modify underlying zoning requirements, including for floodplains, shorelands, aquifer protection, ridgelines, scenic features, and highway areas.
    “different provisions may be applied to different classes of situations, uses, and structures and to different and separate districts of the municipality”
  • SetbacksDistrict specific (with conditions)

    Municipal land-use standards throughout Vermont, including setback requirements applicable to particular uses, districts, or hazard areas.

    • Specific setback distances are established by applicable municipal bylaws or other applicable state requirements.
    • Housing decisions may adjust municipal standards only under the statutory findings described in 24 V.S.A. § 4464(b)(7)(B).
    “dimensions, location, [...] and use of structures; [...] distances to be left unoccupied by uses and structures; [...] different provisions may be applied [...] to different and separate districts”
  • Building heightDistrict specific (with conditions)

    Municipal building-height standards throughout Vermont; the applicable height limit is determined by local bylaws and district standards.

    • The statute does not establish a statewide numeric height limit.
    • For housing developments, a municipal panel may not reduce building height below that allowed in the municipal bylaws except under the statutory modification findings.

    building height: As allowed in applicable municipal bylaws (Subject to 24 V.S.A. § 4464(b)(7)(B) adjustments)

    “limit the building size to less than that allowed in the municipal bylaws, including reducing the building footprint or height;”
  • Accessory dwellingsAllowed (with conditions)

    One accessory dwelling unit within or appurtenant to a single-family dwelling on an owner-occupied lot in Vermont municipalities.

    • The unit must be within or appurtenant to a single-family dwelling on an owner-occupied lot.
    • Flood hazard and fluvial erosion area bylaws adopted under 24 V.S.A. § 4424 are an exception.
    • The single-family dwelling with an accessory dwelling unit is subject to the same review, dimensional, and other controls applicable to a single-family dwelling without an accessory dwelling unit.
    • The property must have sufficient wastewater capacity.
    • The unit must not exceed 30 percent of the total habitable floor area of the single-family dwelling or 900 square feet, whichever is greater.
    • A municipality may adopt less restrictive accessory-dwelling-unit rules.
    • Conversion of an existing detached nonresidential building to habitable space for an accessory dwelling unit may not be subject to criteria more restrictive than those used for a single-family dwelling without an accessory dwelling unit.

    maximum floor area: 30% of the total habitable floor area or 900 square feet, whichever is greater

    “Except for flood hazard and fluvial erosion area bylaws adopted pursuant to section 4424 of this title, no bylaw shall have the effect of excluding as a permitted use one accessory dwelling unit that is located within or appurtenant to a single-family dwelling on an owner-occupied lot. A bylaw shall require a single-family dwelling with an accessory dwelling unit to be subject to the same review, dimensional, or other controls as required for a single-family dwelling without an accessory dwelling unit.”
  • Septic permitRequired

    Construction, replacement, or modification of a statewide potable water supply or wastewater system, including a septic system; also specified building, subdivision, failed-system, connection, and use-change activities.

    • The requirement is subject to exemptions in 10 V.S.A. §§ 1974 and 1978.
    • Primitive camps with no interior plumbing consisting of more than a sink with water are exempt only when used no more than three consecutive weeks per year and no more than 60 total days per year; the exemption does not apply to seasonal camps.
    • Other statutory exemptions include certain pre-January 1, 2007 buildings, structures, lots, and systems; specified water-treatment systems; certain transportation-project subdivisions; and operation of a failed single-groundwater-source supply serving one single-family residence.
    “Except as provided in this section and sections 1974 and 1978 of this title, a person shall obtain a permit from the Secretary before: [...] (3) constructing, replacing, or modifying a potable water supply or wastewater system;”
  • Septic inspectionLimited

    Substantially completed permitted potable-water-supply and wastewater systems, including septic systems.

    • A permit is not valid for a substantially completed system until the Secretary receives an installation certification from an installer or licensed designer.
    • The certification must state that the installation-related information is true and correct and that the system was installed in accordance with the permitted design and all permit conditions.
    “No permit issued by the Secretary shall be valid for a substantially completed potable water supply and wastewater system until the Secretary receives a statement from an installer or a licensed designer certifying that [...] the potable water supply and wastewater system: [...] (2) were inspected;”
  • Off-grid sanitationLimited

    Off-grid wastewater disposal systems that qualify as potable-water-supply or wastewater systems under Vermont law.

    • Construction, replacement, or modification requires a permit unless an exemption applies.
    • Primitive camps without interior plumbing beyond a sink with water are exempt only when used no more than three consecutive weeks per year and no more than 60 total days per year; the exemption does not apply to seasonal camps.
    • The sources opened do not establish rules for every possible composting-toilet, incineration-toilet, or other sanitation technology.
    “Primitive camps with no interior plumbing consisting of more than a sink with water, that are used no more than three consecutive weeks per year and no more than a total of 60 days per year, shall be exempt. This exemption does not apply to seasonal camps.”
  • Mandatory utility hookupWater and sewer (with conditions)

    New or replacement water or sewer service connections to municipal mains in Grand Isle County.

    • The Vermont DEC Regional Office Program reviews and approves the project.
    • An application must be filed with the appropriate Regional Office.
    • Sewer components must comply with Appendix 1-A of the Wastewater System and Potable Water Supply Rules; water components must comply with Part 11 of Chapter 21 of the Water Supply Rule.
    “The Regional Office Program reviews projects for compliance and issues permits in the administration of Chapter 1, Wastewater System and Potable Water Supply Rules. Part of the responsibility of the Program is to review and approve projects that have new or replacement water or sewer service connections to municipal water and sewer mains.”
    One more reviewed finding on this topic
    • Conditional — New or modified connections to potable-water or wastewater systems statewide.
      “making a new or modified connection to a new or existing potable water supply or wastewater system; or”
  • Agricultural exemptionAvailable (with conditions)

    Farm structures associated with required agricultural practices in Vermont municipalities; the exemption does not cover dwellings for human habitation.

    • The exemption applies to required agricultural practices, including construction of farm structures, as defined by the Secretary of Agriculture, Food and Markets.
    • The person must notify the municipality of the intent to build the farm structure.
    • The person must abide by setbacks approved by the Secretary of Agriculture, Food and Markets.
    • No municipal permit is required for the farm structure.
    • A farm structure excludes a dwelling for human habitation.
    • Municipal panels may still impose reasonable conditions in land-development decisions to protect wildlife habitat, threatened or endangered species, or other natural, historic, or scenic resources.
    “A bylaw under this chapter shall not regulate: (A) required agricultural practices, including the construction of farm structures”
  • Subdividing landRegulated (with conditions)

    Division of land into two or more lots or other divisions for sale, development, or lease in Vermont municipalities that adopt subdivision bylaws.

    • A municipality may regulate subdivision; the statute does not require every municipality to adopt subdivision bylaws.
    • Subdivision bylaws must establish standards and procedures for approval, modification, or disapproval of plats.
    • Specific local standards and review procedures vary by municipality.
    “a municipality may regulate the division of a lot or parcel of land into two or more lots”
  • Driveway accessRequired

    Driveway, entrance, or approach work affecting a Vermont State or town highway right-of-way, including grade, drainage, or adjacent land work that diverts water onto the right-of-way.

    • A written permit is required from the Agency for State highways.
    • A written permit is required from the legislative body or its designee for town highways.
    • Permit conditions must require compliance with applicable local highway and land-use ordinances and regulations.
    • Reasonable entrance and exit generally may not be denied except on limited-access highways or as necessary for stated safety, service-level, infrastructure, planning, or regional-plan reasons.
    • For development contributing 75 or more peak-hour trips to State highways or class 1 town highways, reasonable service-level conditions may be imposed.

    peak-hour-trip threshold: >= 75 trips (Applies to development contributing 75 or more peak-hour trips to State highways or class 1 town highways.)

    “without a written permit from the Agency, in the case of State highways, or the legislative body or designee of a municipality”
  • Building in a floodplainRequired

    New construction or substantial improvement in flood hazard or other hazard areas subject to Vermont municipal flood hazard bylaws.

    • Flood hazard bylaws must require compliance with State Flood Hazard Area Standards and additional National Flood Insurance Program requirements.
    • Where a flood hazard bylaw applies with another bylaw, compliance is prerequisite to a zoning permit.
    • Where a flood hazard bylaw applies without a zoning bylaw, a flood hazard area or hazard area permit is required.
    • Before granting a permit, the application must be sent to the Agency of Natural Resources or designee with proof of receipt.
    • The permit cannot be granted until 30 days have elapsed after mailing or ANR has delivered comments.
    • The rule does not apply to planting projects deemed permitted under subsection 4424(c), subject to the statutory exceptions for larger undertakings involving structures, berms, or other physical disturbance and certain forestry operations.

    ANR review waiting period: >= 30 days (No waiting period is required if the Agency delivers comments earlier.)

    “either 30 days have elapsed following the mailing or the Agency or its designee delivers comments on the application.”
  • Short-term rentalsLimited

    Short-term rentals throughout Vermont; municipalities may regulate their operation by ordinance or bylaw.

    • Municipal regulation may not adversely impact the availability of long-term rental housing.
    • The statutory definition is a furnished house, condominium, dwelling room, or self-contained dwelling unit rented to transient, traveling, or vacationing members of the public for fewer than 30 consecutive days and more than 14 days per calendar year.
    • This claim establishes municipal authority to regulate, not a statewide determination that every short-term rental is permitted or prohibited.

    maximum rental duration in statutory definition: < 30 consecutive days · annual rental-duration threshold in statutory definition: > 14 days per calendar year

    “To regulate by means of an ordinance or bylaw the operation of short-term rentals within the municipality”
  • Permit feesPublished (with conditions)

    Act 250 land-use permit and permit-amendment applications statewide in Vermont.

    • Applicants are also responsible for newspaper publication and land-record recording costs.
    • Construction applications are charged $6.65 per $1,000 of the first $15,000,000 of construction costs and $3.12 per $1,000 above $15,000,000.
    • An additional $0.75 per $1,000 of the first $15,000,000 is paid to the Agency of Natural Resources for review.
    • Applications involving creation of lots are charged $125 per lot.
    • The minimum fee is $187.50 for original applications and $62.50 for amendment applications.
    • The maximum fee for an individual permit or permit-amendment application is $165,000.
    • Municipal and State governmental projects do not pay these fees except publication and recording costs.
    • Residential development in a designated Vermont neighborhood or neighborhood development area is charged no more than 50 percent of the otherwise applicable fee, payable within 30 days after the permit is issued or denied.
    • Fee-refund requests must be submitted within 90 days after withdrawal; refund percentages depend on whether withdrawal occurs before or after a hearing.
    • A supplemental fee may be required if actual construction costs were understated; failure to pay may support permit revocation.

    construction fee, first $15,000,000: per 6.65 USD per $1,000 construction cost · construction fee above $15,000,000: per 3.12 USD per $1,000 construction cost · ANR review fee: per 0.75 USD per $1,000 of first $15,000,000 construction cost · lot creation fee: per 125 USD per lot · minimum original application fee: 187.5 USD · minimum amendment application fee: 62.5 USD · maximum individual permit or amendment fee: <= 165000 USD

    “For applications for projects involving construction, $6.65 for each $1,000.00 of the first $15,000,000.00 of construction costs”
  • Permit processPartial

    Land development in Vermont municipalities where bylaws have been adopted; the statute establishes the baseline municipal permit process but does not provide every local application form or review requirement.

    • A permit is required only within the area affected by adopted bylaws.
    • The administrative officer may issue a permit only if it conforms to the bylaws.
    • A certificate of occupancy is required only if the adopted bylaws so provide.
    • Permits do not take effect until the applicable appeal period has passed, or until appeals are resolved as specified by statute.
    • Applications and permits must state that State permits may also be required before construction begins.
    • Local bylaws may impose additional procedures and requirements.

    permit appeal-effect period: until applicable appeal period passes or appeal is resolved (Environmental Division appeal may delay effectiveness until the court rules on a stay or 15 days expire, whichever comes first.)

    “No land development may be commenced within the area affected by the bylaws without a permit issued by the administrative officer.”
  • Campground & park staysLimited

    Vacation or recreational camping and campgrounds in Vermont, including Grand Isle County.

    • A wastewater or water-supply permit is required when operating, creating, or modifying a campground or when hosting campers for more than twelve nights per year.
    • The fact sheet states that no wastewater or water-supply permit is needed under listed conditions, including fewer than four campsites, no more than twelve nights of camping at a campground per year, no piped water or sewer connections, no wastewater discharge to the ground, applicable rule exemptions, and vacation or recreational use only.

    campsites defining a campground: >= 4 campsites on a lot · permit threshold for hosting campers: > 12 nights per year

    “four (4) or more campsites [...] host campers for more than twelve (12) nights a year.”
    One more reviewed finding on this topic
    • Temporary only (with conditions) — Recreational vehicles used as camping or travel dwelling units at Vermont recreational campgrounds or camping parks.
      “A recreational campground or camping park is property where transient residence is offered or provided for seasonal or short-term vacation or recreational purposes on which may be located cabins, tents, or lean-tos, or campsites designed for temporary set-up of portable or mobile camping, recreational, or travel dwelling units, including tents, campers, and recreational vehicles such as motor homes, travel trailers, truck campers, and van campers.”

Inside cities and towns in Grand Isle County

Municipal rules found while researching the county. They apply inside that city or town, not to unincorporated land.

  • InspectionsLimited

    Periodic inspections of public improvements during installation for subdivision projects in the Town of Grand Isle.

    • The bylaw describes periodic inspection by Town-retained consultants during installation of public improvements in subdivision projects.
    • The source does not establish a general building-code inspection requirement for ordinary residential construction.
    “Such fee must include the costs of publication, public hearings, administrative review, and for periodic inspection by the Town retained Consultants during the installation of public improvements.”
  • Certificate of occupancyNot required

    Town-issued certificates of occupancy or certificates of compliance for development governed by the Town of Grand Isle Zoning Bylaws and Subdivision Regulations.

    • This claim concerns the Town of Grand Isle zoning program and does not determine whether a separate state, fire-safety, energy-code, or other approval may apply.
    “The Town does not issue certificates of occupancy or certificates of compliance.”
  • Building heightSpecified

    Structures in the Town of Grand Isle

    • Agricultural structures and municipal water storage tanks are exempt from the 35-foot limit.
    • The Development Review Board may approve greater height if the structure does not constitute a hazard and the portion above 35 feet remains unoccupied except for normal maintenance.
    • The DRB may establish a lower maximum height to preserve an exceptional scenic view or enable a solar heating system.

    maximum structure height: <= 35 feet above average natural grade (unless Conditional Use Approval is obtained from the DRB)

    “exceed thirty-five (35) feet”
  • Living in an RVTemporary only (with conditions)

    Recreational vehicles parked and occupied on property in the Town of Grand Isle by the owner or by a relative or friend with permission.

    • No zoning permit is required under the cited provision.
    • The recreational vehicle must be more than 25 feet from property boundaries.
    • The recreational vehicle must be more than 40 feet from the near edge of any public or private road right-of-way.
    • Occupancy is limited to no more than six months in any twelve-month period.

    minimum distance from property boundary: > 25 feet · minimum distance from road right-of-way edge: > 40 feet · maximum occupancy: <= 6 months per 12-month period

    “Recreational vehicles may be occupied no more than six (6) months”
  • Camping on your landLimited

    Camping vehicles used for living quarters and camping trailer parks or campgrounds in the Town of Grand Isle.

    • A camping vehicle used for living quarters that is not readily movable or is occupied for more than six months in any twelve-month period is classified as a dwelling and must comply with all zoning bylaw requirements applicable to dwellings, including permitting.
    • New camping trailer parks and campgrounds, and alterations or additions to existing ones, require conditional use approval.
    • Camping trailer parks and campgrounds must comply with the cited Vermont Department of Environmental Conservation wastewater and potable water supply rules and provide adequate emergency-vehicle access.

    occupancy threshold for dwelling classification: > 6 months per 12-month period (Also applies when the camping vehicle is sited so as not to be readily movable) · campground approval: conditional use approval (New parks/campgrounds and alterations or additions to existing parks/campgrounds)

    “classified as a dwelling [...] require Conditional Use approval.”
  • Manufactured homesLimited

    Manufactured, mobile, modular, or prefabricated housing used as a dwelling in the Town of Grand Isle.

    • Mobile, modular, or prefabricated housing units are treated as single-family dwellings and must meet the same zoning requirements applicable to single-family dwellings.
    • Mobile homes are permitted in approved mobile home parks subject to the bylaw section and State law; the more restrictive requirement applies if requirements conflict.
    • New mobile home parks and additions or alterations to existing mobile home parks require conditional use approval by the Development Review Board.

    mobile home park approval: conditional use approval (New parks and additions or alterations to existing parks)

    “treated as single-family dwellings”
  • Accessory dwellingsAllowed (with conditions)

    One accessory dwelling unit within or appurtenant to a single-family dwelling on an owner-occupied lot in the Town of Grand Isle.

    • The owner must occupy either the primary dwelling or the accessory dwelling.
    • The property must have sufficient wastewater capacity.
    • The unit must not exceed 30 percent of the total habitable floor area of the single-family dwelling.
    • Applicable setback and parking requirements must be met.
    • Conditional use review is required if creation involves a new accessory structure, an increase in the height or floor area of the existing dwelling, or an increase in parking-area dimensions.

    maximum accessory dwelling floor area: <= 30 percent of total habitable floor area of single-family dwelling

    “sufficient wastewater capacity”
  • Agricultural exemptionAvailable

    Common agricultural tillage, ground care, gardening, or excavating in cemeteries in the Town of Grand Isle

    • The exemption is stated in the Town of Grand Isle Zoning Bylaws and applies to the listed activities.
    “exempt from these Bylaws”
  • Subdividing landRegulated (with conditions)

    Subdivision and other land development activity in the Town of Grand Isle

    • Subdivision wastewater disposal is regulated by the Vermont Agency of Natural Resources, Department of Environmental Conservation, under the Wastewater System and Potable Water Supply Rules, effective September 29, 2007, or as revised.
    • The Development Review Board may allow a community wastewater disposal system if permitted by state regulations.
    “must be submitted to them”
  • Driveway accessLimited

    Driveways and private roads serving development in the Town of Grand Isle.

    • Site plan approval and conditional-use approval by the Development Review Board are required for a driveway, private road, water supply, or wastewater disposal facility for common use by three or more dwellings.
    • Industrial uses must have direct driveway access to Route 2 or Route 314.
    • Driveways generally must be set back fifteen feet from side boundaries, but shared driveways are exempt from that setback when the required recorded easements protect the owners.

    driveway side-boundary setback: 15 feet (Shared driveways are exempt if required easements are recorded) · common-use dwelling threshold: >= 3 dwellings (Triggers site-plan and conditional-use approval)

    “Driveway 15 feet setback from side boundaries.”
  • Building in a floodplainRequired

    Proposed construction and other development in areas of special flood hazard in the Town of Grand Isle.

    • The rules apply to areas identified on the most current FEMA/NFIP flood studies and maps adopted by reference.
    • Conditional-use approval is required for new buildings, substantial improvements to existing buildings, and development in a floodway before administrative-officer permitting.
    • The administrative officer must submit the application and supporting information to Vermont ANR's River Management Section before issuing a permit.
    • A permit may issue only after Agency comments are received or thirty days have expired from mailing the application, whichever occurs sooner.
    • On-site wastewater systems may not be located in a floodway.

    Agency comment waiting period: 30 days (Permit may issue sooner if Agency comments are received first)

    “A permit is required”
  • Permit feesVariable (with conditions)

    Permits administered under the Town of Grand Isle zoning bylaws.

    • Fees for all permits are established by the Selectboard.
    • Notice-of-intent procedures for certain agricultural structures have no fee.
    • The source does not publish the current Selectboard fee schedule.

    permit fee schedule: Established by the Selectboard; amount not stated in the bylaws (No fee for the specified agricultural notice-of-intent procedure)

    “fees for all permits are established by the Selectboard.”
  • Permit processPublished (with conditions)

    Zoning permit applications in the Town of Grand Isle.

    • Initial contact must be made with the Zoning Administrative Officer.
    • The completed application, fee, plot plan, required information, and approvals must be submitted.
    • The ZAO may issue or deny the permit in writing or refer the application to the Development Review Board or State for consideration.
    • The bylaws state a thirty-day action period after submission of the completed materials.

    ZAO action period: 30 days (Begins after submission of completed application, fee, plot plan, required information, and approvals)

    “Within thirty (30) days”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Minimum dwelling size — Dwellings in the Town of Grand Isle, within Grand Isle County
  • Lot coverage — Lot coverage in the Town of Grand Isle
  • Tiny homes — Occupancy of tiny homes in Grand Isle County.

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Grand Isle County, Vermont

Is Grand Isle County a good place to live off-grid or homestead?

Grand Isle County scores 76/100 on the Bolthole Index, a strong county profile. Its strengths: low administrative friction for a quiet rural property and mixed durability signals.

Do you need a building permit in Grand Isle County, Vermont?

Grand Isle County does not require a county building permit for a home in unincorporated areas, and it has no county-wide zoning. Onsite septic is permitted by Vermont DEC - Wastewater System & Potable Water Supply Program. Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Grand Isle County, Vermont?

Land in Grand Isle County runs about $7,445 per acre, based on the latest county data.

What is the water situation in Grand Isle County?

Grand Isle County gets about 38.8" of rain a year, with severe drought in roughly 0.3% of years.

How remote is Grand Isle County?

A representative private-land location has about 54,139 people within a 30-minute drive and 667,944 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

Off-grid gear

Going off-grid in Grand Isle County means bringing your own water and power. The kit we’d start with:

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How Grand Isle compares in Vermont

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