Building permits, zoning and land rules in Washington County, Vermont

At a glance

Building permit

No countywide permit; requirements vary by town¹

Zoning

Administered town by town, not by the county³

Septic and water

State permit generally required for new construction and new or modified connections⁴⁵

Owner-builder

A qualifying owner-builder who will occupy the home may use an energy-standards exemption⁶

State building code

An owner-occupied single-family home is generally excluded from the public-building code⁷

RV living

Private-land occupancy was not confirmed; ask the town zoning administrator⁸³

Tiny home

No countywide occupancy rule was confirmed; town zoning and state water-wastewater rules still matter³⁹

Septic soils

Only 2.5% of county soils lack severe limits for a conventional drain field¹⁰

Who to call

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 Washington County, Vermont?

Washington County does not issue a countywide residential building permit; the answer depends on the municipality where the parcel lies¹. Vermont municipalities may adopt building codes, but the available rules do not identify which Washington County municipalities have done so². Within an area covered by adopted municipal bylaws, land development needs a permit from the municipal administrative officer, and the permit must conform to those bylaws¹¹. A municipal certificate of occupancy is required only where the local bylaws require one¹².

Vermont's Fire and Building Safety Code applies to public buildings, but an owner-occupied single-family residence is generally excluded unless its use makes it a public building⁷¹³. That exclusion does not erase an adopted municipal code, municipal zoning, or state water and wastewater approval. Before designing or clearing a site, give the parcel address and tax-map identification to the town clerk or zoning administrator and ask for the current permit application, fee schedule, district map, code requirements, inspections, and occupancy requirements¹³².

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

There is no single Washington County building or zoning counter; the municipality that contains the parcel administers any locally adopted land-use bylaws¹³. Start with that town or city's clerk or zoning administrator and ask which local permits apply. Local forms, residential fees, inspection schedules, and building-permit search procedures could not be confirmed countywide, so the municipal office is the source for a parcel-specific answer.

For septic and potable-water permitting, contact the Vermont DEC Wastewater System and Potable Water Supply Program's Montpelier Regional Office at 1 National Life Drive, Davis 4, Montpelier, VT 05620-3703, or 802-828-5034¹⁴. The official regional page lists Washington County communities among the places served and says the office is open by appointment because it is not continuously staffed¹⁴. A municipal wastewater delegation is legally possible, so ask DEC whether the municipality for your parcel has delegated authority before filing¹⁵.

Does Washington County have zoning?

Washington County has no county zoning office; Vermont land-use zoning is administered by municipalities, and most municipalities in the county have adopted bylaws³. Where a municipality has adopted zoning, its map may divide land into districts and overlays with different uses and dimensional standards¹⁶. Setbacks and building heights therefore come from the applicable municipal bylaw or another applicable state requirement, not one countywide schedule¹⁷¹⁸. Minimum dwelling size, minimum lot size, and lot coverage could not be confirmed as countywide standards; ask the municipal zoning administrator for the parcel's district table.

Subdivision has two layers. State law requires a Secretary's permit before subdividing land unless an exemption applies, while municipalities that adopt subdivision bylaws may impose their own approval process¹⁹²⁰. Farm structures associated with required agricultural practices may avoid a municipal permit, but the exemption excludes dwellings for human habitation and still requires notice to the municipality and compliance with agricultural setbacks²¹.

How do septic and water permits work in Washington County?

A Vermont Wastewater System and Potable Water Supply Permit is generally required before constructing a new building or constructing, replacing, or modifying a potable-water supply or wastewater system, subject to statutory exemptions⁴. A permit is also generally required for a new or modified connection to a potable-water or wastewater system, including municipal water and sewer connections⁵. Applications use the prescribed form, must include the required supporting material, and need design certification by a licensed designer before issuance²².

After construction, substantial completion requires certification by an installer or licensed designer, along with inspection, testing, and successful performance-test results²². Site feasibility deserves early attention because only 2.5% of Washington County soils lack severe limitations for a conventional septic drain field¹⁰. That countywide soil measure does not decide an individual parcel, but it makes a designer's site evaluation an early due-diligence item. Contact the Montpelier Regional Office for the correct application path and permit-record search¹⁴.

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

We could not confirm a countywide rule allowing long-term RV occupancy on private land in Washington County. Vermont's reviewed RV provision describes transient, seasonal, or short-term stays in recreational campgrounds and camping parks; it does not answer permanent occupancy on a private parcel⁸. Ask the zoning administrator for the parcel's municipality whether an RV may be occupied, for how long, and whether septic, water, or electrical approvals are prerequisites³.

We also could not confirm a countywide tiny-home occupancy rule or minimum home size. A tiny home used as a dwelling remains subject to the applicable municipal bylaws and state water-wastewater permitting³⁹. Vermont does provide a narrow sanitation exemption for a primitive camp with no interior plumbing beyond a sink with water, used no more than three consecutive weeks per year and no more than 60 total days per year; the exemption does not cover seasonal camps²³. That primitive-camp exception is not a general right to occupy an RV or tiny home year-round.

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

1. Identify the municipality and zoning district for the parcel, then obtain the current bylaws and permit forms from its clerk or zoning administrator³¹⁶.
2. Confirm the allowed use, setbacks, height, access, flood constraints, local fees, and whether the municipality requires a certificate of occupancy¹⁷¹⁸¹².
3. Retain a licensed designer and apply for the state Wastewater System and Potable Water Supply Permit using the prescribed form and supporting documents²⁴.
4. Obtain the local land-use permit before development begins wherever adopted bylaws cover the site, and wait until the permit is effective¹¹.
5. If the driveway touches a State or town highway right-of-way, obtain the written entrance permit from the State Agency or the town's legislative body or designee²⁵.
6. Build to the approved plans and secure the required installation certification after the water and wastewater work is inspected and tested²⁶.
7. Complete any locally required occupancy process before moving in¹².

What should you check before buying land in Washington County?

Confirm the municipality first because Washington County building permits, zoning districts, setbacks, and local fees cannot be answered from a countywide rule¹³. Check the title and survey against proposed access and subdivision plans; state approval is generally required before subdividing, subject to exemptions, and local subdivision review may also apply¹⁹. If an entrance will affect a State or town highway right-of-way, a written permit is required from the responsible highway authority²⁵.

Investigate wastewater feasibility before closing because only 2.5% of county soils lack severe limits for a conventional drain field¹⁰. The terrain is another budget issue: 90.4% of the county is wooded, and 39.7% of the land has a slope of 15% or less²⁷²⁸. Ask the municipality whether a flood-hazard bylaw covers the parcel; where one applies, compliance is required before a zoning permit, or a separate hazard-area permit may be required²⁹. For carrying costs, the county's effective property-tax rate is about 1.9%, and the median annual bill is about $5,491³⁰³¹.

Watch-outs

• Do not treat the absence of a county permit office as permission to build: the municipality may require a land-use permit, and state water-wastewater approval still applies¹¹¹³².
• Long-term RV living and tiny-home occupancy could not be confirmed countywide; ask the parcel's municipal zoning administrator before relying on either use⁸³.
• A qualifying owner-builder energy exemption does not waive municipal permits; it carries disclosure and land-record obligations when the home is sold⁶.

Sources

1. Vermont ACCD - Municipal Plan and Bylaw Submissions (2026 county census)
2. 24 V.S.A. § 3101. Bylaws and ordinances; penalties, quoted and re-checked
3. Vermont ACCD - Municipal Plan and Bylaw Submissions (2026 county census)
4. 10 V.S.A. § 1973. Permits, quoted and re-checked
5. 10 V.S.A. § 1973. Permits, quoted and re-checked
6. Vermont Statutes, 30 V.S.A. § 51, quoted and re-checked
7. 20 V.S.A. § 2730 — Definitions (Vermont statewide rule), quoted and re-checked
8. 9 V.S.A. § 4410 — Campgrounds; removal (Vermont statewide rule), quoted and re-checked
9. 10 V.S.A. § 1973 — Permits (Vermont statewide rule), quoted and re-checked
10. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
11. 24 V.S.A. § 4449 — Zoning permit, certificate of occupancy, and municipal land use permit (Vermont statewide rule), quoted and re-checked
12. Vermont Statutes, 30 V.S.A. § 51, quoted and re-checked
13. 2025 Vermont Fire & Building Safety Code (Vermont statewide rule), quoted and re-checked
14. Vermont DEC Wastewater System and Potable Water Supply Program, Montpelier Regional Office (dec.vermont.gov)
15. Vermont Statutes, Title 10, Chapter 64, quoted and re-checked
16. 24 V.S.A. § 4411 — Zoning bylaws (Vermont statewide rule), quoted and re-checked
17. 24 V.S.A. § 4464 — Hearing and decision on application (Vermont statewide rule), quoted and re-checked
18. 24 V.S.A. § 4464 — Hearing and decision on application (Vermont statewide rule), quoted and re-checked
19. Vermont Statutes, Title 10, Chapter 64, quoted and re-checked
20. 24 V.S.A. § 4418 — Subdivision bylaws (Vermont statewide rule), quoted and re-checked
21. 24 V.S.A. § 4413 — Limitations on municipal bylaws (Vermont statewide rule), quoted and re-checked
22. 10 V.S.A. § 1973. Permits, quoted and re-checked
23. Vermont Statutes, Title 10, Chapter 64, quoted and re-checked
24. Vermont Statutes, Title 10, Chapter 64, quoted and re-checked
25. 19 V.S.A. § 1111 — Permitted use of highway rights-of-way (Vermont statewide rule), quoted and re-checked
26. Vermont Statutes, Title 10, Chapter 64, quoted and re-checked
27. Wooded share of land: Bolthole Index county data
28. Share of land at 15% slope or less: Bolthole Index county data
29. 24 V.S.A. § 4424 — Flood or hazard area bylaws (Vermont statewide rule), quoted and re-checked
30. Effective property tax rate: Bolthole Index county data
31. Median property tax bill: Bolthole Index county data
32. Vermont DEC - Wastewater System and Potable Water Supply Program (2026 county census)

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.