Bolthole Index

Montgomery County, New York

Building permits, zoning and septic rules in Montgomery County, New York

55Index Score / 100
#39 of 62 in New York

Building permits are required for covered work in Montgomery County, New York, and the municipality where the parcel lies administers them12. Montgomery County does not impose county-level zoning; zoning and code enforcement are handled by the town, village or city3. The authority that approves an ordinary residential septic system could not be confirmed, so ask the local code office before designing one.

At a glance

Building permit
Required, but issued by the town, not the county1
Zoning
No county-level zoning; check the town, village or city3
Septic system
Local approval authority not confirmed; start with the municipal code office4
Owner-builder exemption
Not confirmed on the record for this county; ask your town's code office5
Subdivision review
Town planning boards review new subdivisions outside villages when authorized by the town board6
Building code
The 2025 New York Uniform Code is in effect; fossil-fuel prohibitions remain suspended7

Who to call

Building permits

Town of Mohawk Building and Code Enforcement

Building permits, construction/septic-installation permits and inspections for the Town of Mohawk (one of Montgomery County's ten towns) — a worked example of the town-level office a buyer in any Montgomery County town must contact

(518) 774-0420

2-4 Park Street, PO Box 415, Fonda, NY 12068

Zoning

Town of Mohawk Zoning Enforcement

Zoning use permits, complaints and compliance certificates for the Town of Mohawk; every other Montgomery County town runs its own separate zoning office

(518) 571-9882

2-4 Park Street, PO Box 415, Fonda, NY 12068

Roads & driveways

Montgomery County Department of Public Works

Driveway/entrance permits for property access onto a Montgomery County highway (not town or state roads); also road, bridge and drainage maintenance for the county highway system

518-853-3814

113 Park Drive, PO Box 277, Fultonville, NY 12072

Property records

Montgomery County Real Property Tax Service Agency

County parcel data, tax maps, tax rolls and assessment records — the county's Parcel Information System shows which town a parcel is in and its tax history

518-853-3996

County Annex Building, 20 Park Street, PO Box 1500, Fonda, NY 12068-1500

Online permits →

Contact details are copied from each office’s official page and were checked against it on September 29, 2026.

Do you need a building permit in Montgomery County, New York?

Yes. Work that must comply with New York's Uniform Code or Energy Code requires a permit from the local authority having jurisdiction2. In Montgomery County, the town where the parcel lies administers and enforces that requirement1. The 2025 New York Uniform Code became fully effective on December 31, 2025, although the provisions prohibiting fossil-fuel equipment and building systems in new buildings remain suspended by court order and cannot currently be enforced7. A local code program may exempt listed minor work, including a qualifying one-story detached shed or playhouse no larger than 144 square feet, but exempt work must still comply with the codes2. Permitted work is inspected during construction, and covered buildings need a certificate of occupancy or compliance before use89.

Who issues building permits in Montgomery County, and how do you reach them?

There is no single permit counter for every Montgomery County parcel because building and code enforcement is administered locally13. First identify the town, village or city containing the parcel, then ask that municipality for its code-enforcement office. The Montgomery County Real Property Tax Service Agency provides parcel data, tax maps, tax rolls and assessment records that can help identify the municipality10. As a concrete example, the Town of Mohawk Building and Code Enforcement office accepts applications to construct, alter, use or occupy a building or land and issues permits to applicants who comply with the building codes11. The Mohawk contact applies only to land in that town; owners elsewhere should contact their own municipality3.

Does Montgomery County have zoning?

Montgomery County does not have county-level zoning; zoning and code enforcement are handled by the town, village or city3. That means a parcel's permitted uses, setbacks, minimum lot size and accessory-building rules require a municipal answer rather than a countywide one3. The Town of Mohawk Zoning Enforcement office, for example, reviews residential zoning-use permit applications for compliance with town regulations12. That office is relevant only to Mohawk parcels. We could not confirm municipal schedules for zoning districts, setbacks, lot sizes or building heights across the county, so obtain the applicable map and dimensional table from the municipality before relying on a listing. Where a town board has authorized planning-board review, subdivision plats outside incorporated villages go through that local process6.

How do septic permits work in Montgomery County?

We could not confirm which local or district health authority approves an ordinary residential septic system in Montgomery County, so start with the code-enforcement office for the parcel's town, village or city and ask who must approve the design. New York does not require a state SPDES discharge permit when a system sends less than 1,000 gallons per day of sewage wastewater to groundwater and contains no industrial or other non-sewage waste, but that exemption does not remove possible approval by a city health department, county health department or New York State Department of Health district office134. Only about 11% of Montgomery County soils are rated without severe limitations for a conventional drain field, so make a site evaluation an early contingency rather than assuming a standard system will fit14.

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

We could not confirm a countywide rule allowing or prohibiting occupancy of an RV or tiny home in Montgomery County. Montgomery County itself does not administer zoning; the town, village or city handles zoning and code enforcement3. Ask that municipality whether the proposed use is allowed, whether a zoning-use permit is needed, and whether an RV may be occupied while a house is under construction. For a Town of Mohawk parcel, the Zoning Enforcement office reviews residential zoning-use permit applications for compliance with town regulations12. A tiny home used as a dwelling must also follow the building-permit process for work subject to the Uniform Code or Energy Code2. Get the occupancy answer in writing before buying because no countywide RV, camping, tiny-home or minimum-dwelling-size rule was confirmed.

Building a home in Montgomery County: the steps, in order

  1. Use the Montgomery County Real Property Tax Service Agency's parcel resources to confirm the parcel and municipality before closing10.
  2. Ask the town, village or city code office which permits, fees and construction documents apply; the Town of Mohawk office is the listed example for Mohawk parcels1115.
  3. Obtain the municipal zoning map and dimensional rules, because Montgomery County does not administer county-level zoning3.
  4. Ask the local code office to identify the septic approving authority, then make approval and a satisfactory site evaluation purchase contingencies.
  5. Ask the road owner whether a driveway or entrance permit is required; Montgomery County Public Works is the contact for county highways16.
  6. Leave permitted work accessible for required inspections and obtain a certificate of occupancy or compliance before using the covered building89.

What to check before you buy land in Montgomery County

Soils are the first practical constraint: only about 11% of Montgomery County land is rated without severe limitations for a conventional septic drain field14. About 87% of county land has a slope of 15% or less, but a parcel-specific site evaluation is still necessary for building and wastewater planning17. Confirm whether frontage is on a town, county or state road before asking the road owner about driveway approval; Montgomery County Public Works handles the county highway system16. Montgomery County's effective property-tax rate is about 2.6%, and the median annual property-tax bill is about $3,630, so verify the actual parcel record with Real Property Tax Service181910. Farmland value averages about $3,700 per acre, but that county statistic is not a substitute for parcel-specific comparable sales20.

Watch-outs

  • Building permits and code enforcement are handled by the municipality containing the parcel, so identify the town, village or city before applying13.
  • This guide could not confirm whether Montgomery County has an owner-builder exemption from licensed-contractor requirements; ask your town's building and code office directly before assuming one applies5.
  • Search results for "Montgomery County building department" can return other Montgomery Counties (Pennsylvania, Maryland, Ohio, Kansas, Texas and more); confirm you're on a montgomerycountyny.gov page or a Montgomery County, NY town's own site, such as the Town of Mohawk's, before calling a number11.

Sources

  1. NYS Department of State - Building Standards and Codes (2026 county census)
  2. Part 1203 Uniform Code and the Energy Code: Minimum Standards for Administration and Enforcement (New York statewide rule), quoted and re-checked
  3. Montgomery County Frequently Asked Questions, quoted and re-checked
  4. State Pollutant Discharge Elimination System (SPDES) Permit Program (New York statewide rule), quoted and re-checked
  5. (2026 county census)
  6. New York Town Law § 276: Subdivision review; approval of plats; development of filed plats (New York statewide rule), quoted and re-checked
  7. Division of Building Standards and Codes Frequently Asked Questions, quoted and re-checked
  8. Part 1203 Uniform Code and the Energy Code: Minimum Standards for Administration and Enforcement (New York statewide rule), quoted and re-checked
  9. Part 1203 Uniform Code and the Energy Code: Minimum Standards for Administration and Enforcement (New York statewide rule), quoted and re-checked
  10. Montgomery County Real Property Tax Service Agency (montgomerycountyny.gov)
  11. Town of Mohawk Building and Code Enforcement (townofmohawkny.com)
  12. Town of Mohawk Zoning Enforcement (townofmohawkny.com)
  13. State Pollutant Discharge Elimination System (SPDES) Permit Program (New York statewide rule), quoted and re-checked
  14. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  15. Administration and Enforcement of the Uniform Code (New York statewide rule), quoted and re-checked
  16. Montgomery County Department of Public Works (montgomerycountyny.gov)
  17. Share of land at 15% slope or less: Bolthole Index county data
  18. Effective property tax rate: Bolthole Index county data
  19. Median property tax bill: Bolthole Index county data
  20. Farmland value per acre (USDA census): Bolthole Index county data

Written September 29, 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

Montgomery County in New York

55
County map
Montgomery County highlighted among the New York counties · colored by Index score

How Montgomery County scores

Seclusion32100% ev.
Self-Sufficiency67100% ev.
Admin Boringness4290% ev.
Durability77100% ev.
Property Autonomy33100% ev.
Carry Cost70100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$218kTypical home
2.6%Property tax
$3,700Land / acre
42.1"Annual rain
0% of yrsSevere drought
0.9 / yr (+0.9)Mid-century 100°F days
9.6 daysMid-century dry spell
1.43" (+7.3%)Mid-century 1-day rain
1.53×Wildfire change factor
100%Forward climate coverage
$1,108Home insurance / yr
0.8% / yrInsurance growth
0.37%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
88,447People within 30 min
2,649,796People within 2 hr
60,879Radius comparison (15 mi)
122.5People / sq mi
0.3%Federal land
87.4%Land at 15% slope or less
10.9%Septic soil without severe limits
25,933 acWorkable land screen
47.2%Wooded land
72.9 tonsBiomass / forest ac
47°FAvg temp

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Answers from the rulebook for Montgomery County

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

Montgomery County rules

  • County-wide zoningAbsent

    County-level zoning in Montgomery County.

    • Zoning and code enforcement are administered at the town, village, or city level; local municipal zoning may apply.
    “Zoning and Code Enforcement is done at the Town, Village or City level.”

New York rules that apply here

  • Building permitRequired

    Work that must conform to the New York State Uniform Code or Energy Code throughout New York State except New York City, where the city has its own construction code; local authorities having jurisdiction administer and enforce the state requirements within their boundaries.

    • A local authority having jurisdiction may expressly exempt one or more listed categories of work from the building-permit requirement.
    • Permitted exemption categories include one-story detached tool or storage sheds, playhouses, or similar structures associated with one- or two-family dwellings or townhouses not exceeding 144 square feet gross floor area; temporary sets and scenery; certain window awnings; partitions or movable cases less than 5 feet 9 inches high; painting, wallpapering, tiling, carpeting, or similar finish work; listed portable equipment or appliances; certain equipment replacements; and repairs that do not affect fire and life safety.
    • A permit exemption does not authorize work violating the Uniform Code or Energy Code.
    • Beginning December 31, 2025, regulated parties submitting building permit applications must comply with the 2025 NYS Uniform Code, subject to the stated transition option before that date.

    maximum gross floor area for listed detached accessory structures: <= 144 square feet (Only for one-story detached structures associated with one- or two-family dwellings or townhouses and used for tool/storage sheds, playhouses, or similar uses.) · height threshold for listed partitions or movable cases: < 5 feet 9 inches

    “Each authority having jurisdiction shall include in its code enforcement program provisions requiring building permits to be required for work that must conform to either or both of the Codes.”
  • Building code adoptedAdopted (with conditions)

    Construction subject to New York's Uniform Code and Energy Code, including Montgomery County.

    • The 2025 codes became fully effective on December 31, 2025.
    • Implementation and enforcement of provisions prohibiting fossil-fuel equipment and building systems in new buildings remain suspended by court order and are neither effective nor enforceable.
    “New York State has adopted the 2025 Uniform Code of New York State”
  • InspectionsRequired

    Construction work for which a building permit has been issued and which is subject to the Uniform Code or Energy Code, administered by the applicable local authority having jurisdiction throughout New York State except New York City.

    • Inspections may be performed in person or remotely when the authority determines the remote inspection can be performed to the same level and quality and provides sufficient information; otherwise an in-person inspection is required.
    • Where applicable, inspections include the worksite before permit issuance, footing and foundation, concrete slab preparation, framing, structural/electrical/plumbing/mechanical/fire-protection systems, fire-resistant construction and penetrations, heating appliances/chimneys/flues/gas vents, Energy Code compliance elements, manufactured buildings or homes, and a final inspection.
    • Permit work must remain accessible and exposed until inspected and accepted; the permit holder must notify the authority when work is ready for inspection.
    • The state minimum standards do not require regular periodic inspections of owner-occupied one- and two-family dwellings or agricultural buildings used directly and solely for agricultural purposes, but this does not limit inspections invited by the owner or required where conditions threaten or present a public-health, safety, or welfare hazard.

    maximum interval for periodic fire-safety and property-maintenance inspections of multiple dwellings and nonresidential occupancies: <= 3 years (This periodic-inspection interval does not apply as a requirement to owner-occupied one- and two-family dwellings or qualifying agricultural buildings.)

    “Each authority having jurisdiction shall include in its code enforcement program provisions requiring the authority having jurisdiction, or an individual or entity contracted by the authority having jurisdiction and satisfying the requirements set forth in section 1203.2 (e)(2), to perform construction inspections required by the Codes including those listed in this paragraph, either in-person or remotely.”
  • Certificate of occupancyRequired

    Work subject to a building permit and the Uniform Code or Energy Code, and structures or portions converted from one use or occupancy classification or subclassification to another, throughout New York State except New York City.

    • Permission to use or occupy covered buildings or portions is granted only by issuance of a certificate of occupancy or certificate of compliance, except as provided for temporary certificates of occupancy.
    • Before issuance, the authority must inspect and determine compliance with applicable Codes and, where applicable, review structural-observation statements, special-inspection reports, flood-hazard certifications, Energy Code test results, and manufactured-building or manufactured-home seals, insignias, and data plates.
    • A temporary certificate may be issued before completion for a specified period and specified portions, subject to safe occupancy, operational fire and life-safety components, required means of egress, and completion of remaining work.

    temporary certificate period: specified period (The permit holder must undertake to bring the structure into full compliance with the Codes.)

    “The code enforcement program shall provide that, except as provided in section 1203.3 (d)(4), permission to use or occupy a building or structure, or portion thereof, for which a building permit was previously issued, or which has been converted from one use or occupancy classification or subclassification to another, shall be granted only by issuance of a certificate of occupancy or a certificate of compliance.”
  • Who permits septicMixed (with conditions)

    Residential and other septic or cesspool systems statewide in New York.

    • New York State DEC administers SPDES permitting for regulated wastewater discharges.
    • For systems with less than 1,000 gallons per day of sewage-wastewater discharge to groundwater and no industrial or other non-sewage wastes, approval may still be required from the appropriate city health department, county health department, or district office of the New York State Department of Health before construction.
    • The actual local or district health authority depends on the property location.

    groundwater discharge design flow threshold: < 1000 gallons per day (No industrial or other non-sewage wastes)

    “city health department, county health department”
  • Septic permitLimited

    Facilities discharging sewage-wastewater to groundwater through septic systems or similar systems statewide.

    • A SPDES permit is not required when total groundwater discharge design flow is less than 1,000 gallons per day and the wastewater contains no industrial or other non-sewage wastes.
    • The exemption does not eliminate possible approval requirements from the appropriate city health department, county health department, or district office of the New York State Department of Health before construction.
    • Other DEC permits or approvals from other agencies may also be required.

    groundwater discharge design flow: < 1000 gallons per day (Sewage-wastewater containing no industrial or other non-sewage wastes)

    “No SPDES permit is required [...] less than 1,000 gallons per day [...] no industrial or other non-sewage wastes”
  • Subdividing landRegulated (with conditions)

    Subdivision review in towns, for the portion of a town outside incorporated villages, where the town board authorizes the planning board to review plats.

    • Authorization is by town-board resolution; the statute does not establish one uniform approval process for every municipality.
    • The statute defines subdivision by reference to local ordinances, laws, rules, or regulations.
    • Preliminary and final plat review is subject to SEQRA coordination and statutory hearing and decision procedures.
    • A conditional final-plat approval does not qualify the plat for recording or authorize building permits until required signing and recording occur.

    preliminary-plat hearing deadline when no environmental impact statement is required: 62 days (after receipt of a complete preliminary plat) · preliminary-plat decision deadline when no environmental impact statement is required: 62 days (after close of the public hearing) · final-plat filing deadline: 62 days (from final approval, otherwise approval expires)

    “For the purpose of providing for the future growth and development of the town and affording adequate facilities for the housing, transportation, distribution, comfort, convenience, safety, health and welfare of its population, the town board may, by resolution, authorize and empower the planning board to approve preliminary and final plats of subdivisions showing lots, blocks or sites, with or without streets or highways, within that part of the town outside the limits of any incorporated village.”
  • Permit feesVariable (with conditions)

    New York State Department of State building-permit administration and enforcement fees.

    • The schedule is identified as having a publication date of August 2022.
    • Fees vary by project type, building type, area, dwelling unit, sleeping room, inspection, and permit category.
    • For one- and two-family homes including accessory structures constructed contemporaneously, the schedule lists $200 for the first 1,500 square feet and $100 for each additional 1,000 square feet or fraction thereof.
    • Permit renewals have no fee.
    • Building-permit fees include construction inspections required as a result of the permit; additional inspection fees may apply.
    • Local authorities may have separate fees or requirements.

    publication date: August 2022 · one- and two-family homes fee for first 1,500 square feet: 200 USD (including accessory structures constructed contemporaneously) · one- and two-family homes fee for each additional 1,000 square feet or fraction: per 100 USD (after the first 1,500 square feet) · permit renewal fee: 0 USD

    “$ 200 First 1,500 square feet of area $ 100 Each additional 1,000 square feet of area or fraction thereof”
  • Permit processPublished (with conditions)

    Building-permit applications for work subject to the New York State Uniform Code or Energy Code, administered through the authority having jurisdiction’s code-enforcement program.

    • A building permit is required for work that must conform to the Uniform Code or Energy Code.
    • The code-enforcement program may exclude listed categories, including qualifying detached structures not exceeding 144 square feet, temporary sets and scenery, certain awnings, partitions or movable cases under 5 feet 9 inches, finish work, listed portable equipment, qualifying equipment replacements, and repairs that do not affect fire and life safety.
    • Excluded work must still conform to applicable Uniform Code and Energy Code provisions.
    • An authority having jurisdiction may instead require permits for all work subject to the Uniform Code and Energy Code.
    • Applications must include, at minimum, the work location, nature, extent and scope; tax map number and street address; occupancy classification; applicable special-inspection statement; and acceptable construction documents.
    • Construction documents may need site plans, code-compliance information, structural and building-system information, Energy Code compliance, flood-hazard information, and licensed architect or professional-engineer documentation where applicable.

    detached accessory structure exemption threshold: <= 144 square feet (one-story detached structures associated with one- or two-family dwellings or multiple single-family dwellings used for tool/storage sheds, playhouses, or similar uses) · movable partition or case exemption height: < 5 feet 9 inches

    “An authority having jurisdiction’s code enforcement program must require any party who proposes to perform any work which must conform with the Uniform Code”

Still unanswered

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

  • Zoning districts — Published zoning-district maps or schedules in Montgomery County.
  • Minimum dwelling size — Minimum dwelling-size requirements in Montgomery County.
  • Minimum lot size — Minimum lot-size requirements in Montgomery County.
  • Setbacks — Building and structure setbacks in Montgomery County.
  • Lot coverage — Lot-coverage limits in Montgomery County.
14 more unanswered
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals

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 Montgomery County, New York

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

Montgomery County scores 55/100 on the Bolthole Index, a solid county profile. Its strengths: mixed durability signals and manageable long-term carry cost. Watch-outs: about 88,447 people within a 30-minute drive and a weaker property-autonomy legal backdrop.

Do you need a building permit in Montgomery County, New York?

Montgomery County generally requires a residential building permit, and it has no county-wide zoning. Onsite septic is permitted by New York State Department of Health (Appendix 75-A). 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 Montgomery County, New York?

Land in Montgomery County runs about $3,700 per acre, based on the latest county data.

What is the water situation in Montgomery County?

Montgomery County gets about 42.1" of rain a year, with severe drought in roughly 0% of years.

How remote is Montgomery County?

A representative private-land location has about 88,447 people within a 30-minute drive and 2,649,796 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 Montgomery County means bringing your own water and power. The kit we’d start with:

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How Montgomery compares in New York

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