Bolthole Index

Dutchess County, New York

Building permits, zoning and septic rules in the Town of Washington, New York

The Town of Washington, New York, in Dutchess County, requires a building permit from its own Building Inspector for work that must meet the state Uniform Code1. The town also sets its own zoning under Chapter 1652. Septic systems are reviewed by the Dutchess County Department of Behavioral & Community Health before the town issues the permit3.

At a glance

Building permit
Required from the Town Building Inspector, with listed exemptions1
Zoning
Town of Washington Chapter 165; the county does not zone24
Septic
Dutchess County DBCH reviews before the town permit; the State Health Department also has jurisdiction35
Certificate of occupancy
Required before occupancy of permitted work6
Wells
Dutchess County well permit required to construct a water well7
Subdivision
Town approval required to subdivide land8

Who to call

Building permits

Town of Washington Building Department

Building permits, inspections and certificates of occupancy inside the Town of Washington

(845) 677-3419

10 Reservoir Dr. Millbrook, NY 12545

Zoning

Town of Washington Zoning Administrator

Zoning review of building permit applications, planning board and zoning board of appeals applications

Septic permits

Dutchess County Department of Behavioral & Community Health, Environmental Health Services

Septic and well design review, lot approval and inspections for properties in Dutchess County towns, ahead of the town's building permit and certificate of occupancy

845-486-3404

ehs@dutchessny.gov

85 Civic Center Plaza, Suite 106, Poughkeepsie, NY 12601

Contact details are copied from each office’s official page and were checked against it on October 24, 2026.

Off-grid gear

Going off-grid in Town of Washington means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in the Town of Washington, NY?

Yes. The Town of Washington requires a building permit for any work that must conform to the Uniform Code or Energy Code, including construction, enlargement, alteration, removal or relocation of a building, and installing a solid-fuel heating appliance, chimney or flue1. The exemptions in Section 74-5 apply1. The state allows towns to exempt one-story detached sheds and playhouses of up to 144 square feet9, and the Town's building department says sheds smaller than 144 square feet are exempt10.

The application is in writing on a form the Building Inspector accepts, signed by the owner or the owner's agent11. The permit proposal must also conform to Chapter 165 zoning unless the Zoning Board of Appeals grants a variance2. Work stays exposed until the Building Inspector inspects and accepts it12, and a certificate of occupancy is required before the building is used6.

Who issues building permits in the Town of Washington, and how do you reach them?

Inside the Town of Washington, the town's own Building Inspector issues building permits1. The Building Department is at 10 Reservoir Dr., Millbrook, and the phone is (845) 677-341913. Dutchess County does not issue the building permit for land inside the town; the county's role is septic and well review14.

A driveway or private road serving the building must be improved to the satisfaction of the Town Highway Superintendent or designated engineer, and the certificate of occupancy cannot issue until the driveway is completed under Planning Board conditions and Chapter 16515.

Does the Town of Washington have zoning, and what about RVs, tiny homes and lot size?

Yes. The Town of Washington has its own zoning, published as Chapter 16516, and the Town's Zoning Administrator enforces it10. Dutchess County does not zone; zoning happens at the town, village and city level4. The county's zoning map is for general reference, and district questions go to the town17.

A second residential structure, such as a guest house, needs Town Planning approval, and the Town's building department says the code requires double the acreage of the zone10. Minimum lot sizes, setbacks, RV living, tiny homes and manufactured homes depend on the zoning district, and we could not confirm those standards. The Town publishes them in Appendix B of the zoning code; ask the Building Department before you buy. Any new subdivision of land needs town approval8.

How do septic permits work in the Town of Washington?

The building permit and the septic review are separate steps. Dutchess County's Department of Behavioral & Community Health reviews septic systems and wells, and the New York State Department of Health also has jurisdiction5. When you apply for a building permit, the Town has you complete the top of the DBCH SAN 34 form, and the building inspector sends it to the county18.

The county recommends the town issue the building permit only after a file review and a pre-construction conference, and if the inspection finds problems such as unexpected soil conditions, no permit is recommended3. Lot approval takes a NYS-licensed Professional Engineer18. Dutchess County's soil ratings suggest planning for a site evaluation: about 15% of soils rate as not limited for a conventional drain field19. Water wells need a permit from the county Commissioner or designee7.

Building a home in the Town of Washington: the steps, in order

  1. Look up your zoning district and tax grid number on the county parcel mapping tool, then read the district's rules in the Town zoning code10.
  2. Get lot approval from the county, using a NYS-licensed Professional Engineer18.
  3. File the written building permit application with the Building Department11; the town sends the SAN 34 form to the county18.
  4. Wait for the county's pre-construction conference before the town issues the permit3.
  5. Keep work exposed for inspection12.
  6. Call the county for the septic inspection before the system is covered20.
  7. Obtain the certificate of occupancy6.

What stays with Dutchess County, and what to check before you buy

Dutchess County keeps septic and well review, and county sanitary code approval for realty subdivisions21. Where an approved public water or sewer system is available in a subdivision, a new individual system may not be allowed22. We could not confirm a Town of Washington rule on sewer or water connection distance.

Dutchess County's effective property tax rate is about 2%23, with a median tax bill of $7,226 a year24. The typical home value is about $504,72325. For land outside the town, see the Dutchess County page.

Watch-outs

  • We could not confirm the Town's rules on RVs, tiny homes, camping, manufactured homes, accessory dwellings or district lot sizes; call the Building Department at (845) 677-341913.
  • The county's rule that septic must be approved before the building permit means a lot with poor soils can stall the whole project3.
  • Dutchess County's property taxes run about 2% of value, so budget for carrying costs23.

Sources

  1. Article III: Building Permits - Town of Washington, NY (Town of Washington), quoted and re-checked
  2. Article III: Building Permits - Town of Washington, NY (Town of Washington), quoted and re-checked
  3. Building Permits, Certificates of Occupancy and Lot Approval, quoted and re-checked
  4. Analysis of Impediments to Fair Housing Choice, quoted and re-checked
  5. Wastewater Disposal System Registration & Notice of Intent, quoted and re-checked
  6. Article VI: Certificates of Occupancy - Town of Washington, NY (Town of Washington), quoted and re-checked
  7. Dutchess County Sanitary Code, quoted and re-checked
  8. Chapter 137: Subdivision of Land - Town of Washington, NY (Town of Washington), 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. Town of Washington Zoning Administrator (washingtonny.org)
  11. Article III: Building Permits - Town of Washington, NY (Town of Washington), quoted and re-checked
  12. Article IV: Construction Inspections - Town of Washington, NY (Town of Washington), quoted and re-checked
  13. Town of Washington Building Department (washingtonny.org)
  14. Building Permits, Certificates of Occupancy and Lot Approval, quoted and re-checked
  15. Article III: Building Permits - Town of Washington, NY (Town of Washington), quoted and re-checked
  16. Table of Contents - Town of Washington, NY (Town of Washington), quoted and re-checked
  17. Municipal Zoning Maps, quoted and re-checked
  18. Dutchess County Department of Behavioral & Community Health, Environmental Health Services (dutchessny.gov)
  19. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  20. Building Permits, Certificates of Occupancy and Lot Approval, quoted and re-checked
  21. Dutchess County Sanitary Code, quoted and re-checked
  22. Dutchess County Sanitary Code, quoted and re-checked
  23. Effective property tax rate: Bolthole Index county data
  24. Median property tax bill: Bolthole Index county data
  25. Typical home value (Zillow): Bolthole Index county data

Written October 24, 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.

Answers from the rulebook for Town of Washington

Town of Washington’s own rules

  • Building permitRequired

    Work inside Washington town that must conform to the Uniform Code or Energy Code.

    • Section 74-5 exemptions apply.
    • A permit must be obtained from the Building Inspector before work begins.
    “Except as otherwise provided in § 74-5, a building permit shall be required for any work which must conform to the Uniform Code and/or the Energy Code, including, but not limited to, the construction, enlargement, alteration, improvement, removal, relocation or demolition of any building or structure or any portion thereof, and the installation of a solid-fuel-burning heating appliance, chimney or flue in any dwelling unit.”
  • Building code adoptedAdopted (with conditions)

    Construction regulated by Town of Washington Chapter 74.

    • The cited chapter was adopted by Local Law No. 5-2007; amendments are noted where applicable.
    “Adopted by the Town Board of the Town of Washington 11-8-2007 by L.L. No. 5-2007.”
  • InspectionsRequired

    Permitted construction inside Washington town.

    • Work must remain accessible and exposed until inspected and accepted.
    • The listed elements are inspected where applicable.
    “Work shall remain accessible and exposed until inspected and accepted by the Building Inspector”
  • Certificate of occupancyRequired

    Work subject to a building permit and conversions of use or occupancy inside Washington town.

    • Occupancy permission is granted only by certificate of occupancy.
    • The Building Inspector or authorized inspector inspects before issuance.
    “certificate of occupancy shall be required”
  • Local zoningPresent (with conditions)

    Land and proposed buildings inside the Town of Washington.

    • A building-permit proposal must conform to Chapter 165 use, area, bulk, applicable overlay-district, environmental-protection-district, and wetland regulations unless the Zoning Board of Appeals grants a variance.
    “The proposal set forth in the application conforms to the use, area, bulk, and applicable overlay district, environmental protection district, and wetland regulations of Chapter 165, Zoning, unless a variance has been granted by the Zoning Board of Appeals.”
  • Zoning districtsPublished (with conditions)

    Zoning districts in Washington town.

    • The code index publishes Chapter 165 and its section range.
    “Chapter 165 Zoning (§ 165-1 – § 165-144)”
  • Septic inspectionRequired

    A property operated under a Town short-term-rental permit that has a septic system.

    • Proof of pumping and satisfactory inspection by a qualified septic disposal firm must be available to the Code Enforcement Officer.
    • After permit issuance, the system must be pumped at least once every four years.

    pumping interval: <= 4 years (Short-term-rental property with a septic system)

    “proof of pumping and satisfactory inspection”
  • Subdividing landRegulated (with conditions)

    Proposed subdivisions of land inside Washington town.

    • The Town adopted its subdivision-of-land chapter by Local Law No. 2-2007; amendments are noted where applicable.
    “§ 137-9 Approval of proposed subdivision required.”
  • Driveway accessRequired

    A building-permit proposal served by a public/private road or common driveway inside Washington town.

    • The access route must be suitably improved to the satisfaction of the Town Highway Superintendent or designated engineer.
    • A certificate of occupancy cannot issue until a driveway is completed under Planning Board approval conditions and applicable Chapter 165 requirements.
    “Any public or private road or common driveway providing access to the proposed building has been suitably improved to the satisfaction of the Town Highway Superintendent or designated engineer to provide safe access as required by this chapter, Chapter 165, Zoning, and Chapter 137, Subdivision of Land.”
  • Short-term rentalsLimited

    Short-term rentals in Washington town, excluding the Village of Millbrook permit cap context.

    • A revocable permit must be obtained in advance.
    • One permit is limited to each owner for each two-year cycle.
    • Tenants or other occupants cannot obtain the permit.
    • At least one owner must have owned the property for at least one year and reside there at least 100 days per year.
    • No more than 40 permits may be effective in the Town exclusive of the Village of Millbrook.

    maximum town permits: <= 40 permits (Exclusive of the Village of Millbrook) · permit term: 2 years (Renewal required 30 days before expiration for continued operation)

    “without obtaining a revocable short-term rental permit in advance”
  • Permit processPublished (with conditions)

    Building-permit applications inside Washington town.

    • Application must be in writing on a form provided by or acceptable to the Building Inspector.
    • It must be signed by the owner or the owner's authorized agent.
    • The required information is that sufficient for the Building Inspector to determine compliance with the Uniform Code and Energy Code.
    “Applications for a building permit shall be made in writing on a form provided by or otherwise acceptable to the Building Inspector. The application shall be signed by the owner of the property where the work is to be performed or by an authorized agent of the owner.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Town of Washington or Dutchess County directly.

  • Owner-builder exemption — Owner-builders inside Washington town.
  • Minimum dwelling size — Single-family dwellings inside Washington town.
  • Minimum lot size — Residential lots inside Washington town.
  • Setbacks — Buildings inside Washington town.
  • Lot coverage — Lots inside Washington town.
10 more unanswered
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Septic permit
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption

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.

Unanswered questions are usually a sign that Town of Washington publishes no rule on the point, not that none exists. Dutchess County’s page lists the county offices to call.

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