Building permits, zoning and septic rules in Westchester County, New York
35Index Score / 100 #55 of 62 in New York
Westchester County, New York doesn't run one countywide building department; each city, town and village enforces the New York State Uniform Code and issues its own building permits, so the office you call depends on exactly which municipality your land sits in12. Zoning works the same way: every municipality sets its own zoning, and the county Planning Board only reviews certain proposed zoning actions referred to it32. Septic is the one thing the county itself permits everywhere: a construction permit and plan review from the Westchester County Department of Health is required before building, repairing or replacing a septic system anywhere in the county45.
At a glance
Building permit
Required statewide, but issued by each city, town or village, not by Westchester County government16
Zoning
Set by each municipality; the county Planning Board only reviews certain referrals3
Building code
The 2025 New York State Uniform Code took effect December 31, 2025; local governments cannot opt out78
Septic permit
Required through the Westchester County Department of Health, countywide4
Owner-builder exemption
New York does not license home-improvement contractors, and owner work at a primary residence is outside that licensing; whether an owner may pull their own building permit is set by each municipality9
Septic-suitable soils
Only about 9.7% of the county's soils lack severe limits for a conventional drain field10
State building-permit fee schedule
$200 for the first 1,500 sq ft plus $100 per additional 1,000 sq ft under the NY DOS schedule; localities may set their own fees instead11
Subdividing land outside a village
Reviewed by the town planning board under Town Law, with a 62-day hearing and decision clock once a resolution authorizes it12
Property tax
About 1.6% effective rate; median bill around $10,001/year1314
Enforces the New York State Uniform Fire Prevention and Building Code and the city's own building and zoning ordinances, and issues building permits, for the City of White Plains only
Licenses septic contractors, handles septic repair and records requests, and runs the county's septic rehabilitation/reimbursement programs for the whole county
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Do you need a building permit in Westchester County, New York?
Yes: New York's Uniform Fire Prevention and Building Code applies throughout Westchester County, and building permits are required for work that must conform to that code, subject to permitted exceptions86. Westchester does not provide one building-permit counter for every parcel; the responsible city, town or village ordinarily administers and enforces the code, so identify the municipality before applying151. A local code-enforcement program may exempt listed work such as a one-story detached shed or playhouse of 144 square feet or less associated with a one- or two-family home, certain low partitions, and finish work like painting or tiling, but exempt work must still comply with the Uniform Code16. The 2025 New York State Uniform Code took effect on December 31, 2025, and local governments cannot exclude themselves from it78. The permit holder must keep covered work accessible until the municipality inspects and accepts it17.
Who issues building permits in Westchester County, and how do you reach them?
Start by identifying which of Westchester's cities, towns or villages your parcel is in, since that municipality's own building or code-enforcement department issues the permit, not Westchester County government1. As an example of how one of these offices is set up, the City of White Plains Department of Building, at 70 Church St., White Plains, NY 10601, 914-422-1269, enforces the Uniform Code and the city's zoning and building ordinances inside White Plains city limits only18. Westchester County's own Department of Planning does not issue building permits or set zoning; it can be reached at (914) 995-2000, 148 Martine Avenue, White Plains, NY 10601, but its planning and zoning role is limited to reviewing certain actions that municipalities are required to refer to the County Planning Board2. For a definitive answer on permits, fees or inspections for a specific address, contact that address's own municipal building department directly rather than the county2.
Does Westchester County have zoning?
Zoning in Westchester County is administered at the city, town and village level, so the ordinance for the parcel's municipality is the one a buyer needs to read3. The City of White Plains, for example, publishes its own zoning ordinance and districts, and its figures do not carry over to other municipalities19. The Westchester County Planning Board reviews certain planning and zoning actions that municipalities must refer under state and county law, while the county's own page directs questions about specific local development and zoning projects to the individual municipality2. We could not confirm a separate countywide zoning ordinance from the reviewed sources. For practical due diligence, ask the parcel's municipal zoning office about permitted uses, minimum lot size, setbacks, accessory dwellings, lot coverage and building height; do not carry an answer from one Westchester municipality into another202.
How do septic permits work in Westchester County?
Environmental engineers in the Westchester County Department of Health review and permit every subdivision plan and every new subsurface sewage treatment system for residential and commercial use to confirm adequate sewage disposal and drinking water45. Plan for that review early: only about 9.7% of Westchester County soils lack severe limits for a conventional septic drain field, making a parcel-specific site evaluation essential before fixing a house location or budget10. County engineers also make field visits during construction to verify that the approved plans are followed5. Statewide, a septic system discharging less than 1,000 gallons per day of ordinary sewage does not need a state SPDES permit from the DEC, but that exemption does not remove possible county or local health approval before construction21. If an existing septic system is failing and the property is in the New York City watershed, the county program offers free design and repairs; call (914) 995-7285 to ask about eligibility22.
Can you live in an RV or tiny home on your land in Westchester County?
We could not confirm one countywide rule allowing residential RV use, temporary camping, tiny homes or manufactured homes on private land in Westchester County. Zoning is administered by the city, town or village where the parcel is located, so ask that municipality's building or zoning office about the proposed use, placement, setbacks and minimum dwelling size before buying or moving anything onto the land202. A tiny home treated as a dwelling must follow the permit process for work subject to the New York State Uniform Code, including construction inspections and a certificate of occupancy or compliance before occupancy61723. A neighboring municipality's answer is not a reliable answer for your parcel; the Westchester County Planning Department directs questions about specific local development and zoning projects to the individual municipality2.
How do you build a home in Westchester County, step by step?
Identify the exact city, town or village your parcel sits in; that municipality, not Westchester County, runs building permitting and zoning for it120.
Contact that municipality's building or code-enforcement department to confirm zoning, setbacks and what construction documents your permit application needs24.
If the site isn't on public sewer, apply separately to the Westchester County Department of Health's Realty Subdivision and Land Development Review for a septic system permit and plan approval, since this runs through the county regardless of municipality54.
Budget for a site evaluation and likely an engineered septic design; only about 9.7% of county soils avoid severe limits for a conventional drain field10.
Submit your building permit application to the municipal building department, expecting a fee roughly on the order of the state's published schedule, $200 for the first 1,500 square feet plus $100 per additional 1,000 square feet, unless your municipality sets its own fee11.
Complete the required inspections as construction proceeds; the state minimum standards don't require additional periodic inspections of an owner-occupied one- or two-family home once it's built, beyond the inspections tied to the permit itself25.
Obtain a certificate of occupancy from your municipality before occupying the home; only the local authority that issued the permit can grant it, and it requires a final compliance check first26.
What should you check before buying land in Westchester County?
Confirm which of Westchester's municipalities the parcel is in before you assume any building, zoning or fee rule, since County government sets none of those directly201. Get a septic site evaluation from the Westchester County Department of Health early: with only about 9.7% of county soils free of severe limits for a conventional drain field, many Westchester lots need an engineered system, which affects both cost and buildable area10. If the property is in the New York City watershed and has an existing septic system, ask the county's Septic System Rehabilitation and Sewer Connection Program whether it qualifies for free repair or replacement design before you assume a failing system is a deal-breaker22. If you're planning to split the parcel into multiple lots outside an incorporated village, expect town planning board review under New York Town Law, including a public hearing and a decision within about 62 days of a complete application where no environmental impact statement is required12. Budget for Westchester's property taxes at roughly a 1.6% effective rate, translating to a median bill near $10,001 a year on a typical home in the county, well above what many rural counties charge1314.
Watch-outs
Westchester has no countywide building or zoning office; the City of White Plains example here applies only inside White Plains, and every other city, town and village runs its own program18.
Owner work at a primary residence is outside New York's home-improvement-contractor licensing, but that does not settle building-permit rules; ask your specific municipality's building department whether an owner may pull their own permit9.
The septic-soils statistic is a countywide average; get a site-specific evaluation from the county Department of Health rather than relying on it for one parcel10.
Written October 10, 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.
Westchester County highlighted among the New York counties · colored by Index score
How Westchester County scores
Seclusion12100% ev.
Self-Sufficiency61100% ev.
Admin Boringness4490% ev.
Durability85100% ev.
Property Autonomy33100% ev.
Carry Cost32100% 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 →
$879kTypical home
1.6%Property tax
$11,506Land / acre
48.2"Annual rain
5% of yrsSevere drought
1.6 / yr (+1.5)Mid-century 100°F days
11.5 daysMid-century dry spell
2.29" (+8.3%)Mid-century 1-day rain
1.36×Wildfire change factor
100%Forward climate coverage
$2,598Home insurance / yr
0.2% / yrInsurance growth
0.37%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
555,815People within 30 min
23,603,628People within 2 hr
858,268Radius comparison (15 mi)
2,300.4People / sq mi
0.6%Federal land
78.9%Land at 15% slope or less
9.7%Soils rated "not limited" for septic (strict USDA rating)
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Cities and towns in Westchester County
Inside a city, town or township here, that government usually sets zoning and may issue its own building permits; the county’s rules above cover land outside them.
Not yet researched: Town of Eastchester · Town of Harrison · Village of Harrison · Town of Mamaroneck · Village of Mamaroneck · Town of Mount Kisco · Village of Mount Kisco · Town of Ossining · Village of Ossining · Town of Pelham · Village of Pelham · Rye · Town of Rye · Town of Scarsdale · Village of Scarsdale
Answers from the rulebook for Westchester County
What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.
Westchester County rules
Local zoningVaries (with conditions)
Aggregate zoning status across Westchester County, where zoning and related code enforcement are administered by cities, towns, and villages rather than by a single countywide zoning administrator.
The county source identifies municipal code enforcement under a Town Supervisor, Village Manager, or similar municipal official.
Municipal zoning ordinances and dimensional schedules therefore must be checked for the specific parcel and municipality.
White Plains is one documented municipal example; its official zoning page identifies an adopted zoning ordinance and directs zoning-use questions to the Planning Department.
“Since local zoning is constantly subject to change”
Minimum dwelling sizeSpecified
Dwelling-unit occupancy under Westchester County sanitary and housing requirements; this is an occupancy standard rather than a zoning minimum floor-area rule.
For stores, offices, and multiple dwellings, the State Building Construction Code Applicable to Multiple Dwellings applies.
The regulation does not apply to occupancies otherwise subject to supervision of appropriate state agencies.
No dwelling unit may be occupied by more than 2.0 persons per habitable space.
air space per occupant: >= 400 cubic feet · floor space per occupant: >= 65 square feet · persons per habitable space: <= 2 persons
“Every dwelling unit shall contain not less than 400 cubic feet of air space nor less than 65 square feet of floor space per occupant; provided that in stores, offices and multiple dwellings the space requirements contained in the State Building Construction Code Applicable to Multiple Dwellings shall apply; and provided further that this regulation shall not apply to occupancies otherwise subject to the supervision of appropriate state agencies. No dwelling unit shall be occupied by more than 2.0 persons per habitable space.”
Who permits septicCounty
County licensing and sanitary regulation of septic system contractors, septage collectors, and OWTS-related requirements.
The commissioner is the Commissioner of the Westchester County Department of Health.
State and municipal requirements may also apply.
The cited code section includes a federal/state-agency employee exception to licensing.
“Beginning on April 1, 2002, each and every person who provides or offers to provide services as a septic system contractor in Westchester County shall have obtained a license from the commissioner in accordance with the requirements of this section.”
Permit feesPublished (with conditions)
County licensing procedures for septic system contractors and septage collectors, not a complete building-permit fee schedule.
The fees are nonrefundable application, instruction, examination, and biennial license-renewal fees under § 873.722.
The cited section does not establish a fee for an OWTS construction permit or municipal building permit.
Licenses expire two years from issuance.
original septic system contractor application fee: 240 USD (non-refundable) · original septage collector application fee: 100 USD (non-refundable) · septic system contractor license instruction program fee: 120 USD (including the cost of examination; initial septic system contractor exam) · reissuance or renewal examination fee: 25 USD (septic system contractor examinations) · biennial septic system contractor license/renewal fee: 240 USD · biennial septage collector license/renewal fee: 120 USD
“Original application fee: $240.00 per septic system contractor applicant; $100.00 per septage collector applicant. [...] Septic system contractor license instruction program fee (including the cost of examination): $120.00 per applicant for initial septic system contractor exam; $25.00 for reissuance of septic system contractor examinations and/or for septic system contractor renewal examinations. [...] Biennial license/renewal fee: $240.00 per licensed septic system contractor; $120.00 per licensed septage collector.”
County-wide zoningPresent
Zoning in Westchester is administered at the municipal (city/town/village) level; e.g., the City of White Plains Zoning Ordinance.
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.”
2 more reviewed findings on this topic
Required — Work required to conform to the New York State Uniform Code in Westchester County.
“Building permits must be required for any work which is required to conform to the Uniform Code. Certain exceptions are permitted.”
Required — Work required to conform to the New York State Uniform Code in Westchester County
“Building permits must be required for any work which is required to conform to the Uniform Code. Certain exceptions are permitted.”
Owner-builder exemptionConditional
Owner-performed home-improvement work at an owner’s primary residence in New York, as to a New York State home-improvement-contractor license.
New York State does not license home-improvement contractors.
A county or local municipality may license home-improvement contractors or particular home-improvement trades.
The Department of State identifies New York City; Suffolk, Nassau, Westchester, Putnam, and Rockland Counties; and the City of Buffalo as examples of local jurisdictions requiring a home-improvement-contractor license.
This finding concerns home-improvement-contractor licensing only; it does not establish an exemption from locally administered building permits, inspections, or licenses for particular trades.
“Check your local government licensing requirements: New York State does not license home improvement contractors. However, some counties and local municipalities do, including New York City, Suffolk, Nassau, Westchester, Putnam, and Rockland counties, and the City of Buffalo.”
Building code adoptedAdopted
The New York State Uniform Fire Prevention and Building Code for construction statewide outside New York City, including residential construction in towns and other local governments.
The Uniform Code took effect January 1, 1984.
New York City was permitted to retain its own code.
Cities, towns, and villages outside New York City do not need to adopt the Uniform Code affirmatively; it is automatically in effect.
A local government cannot exclude itself from all or any part of the Uniform Code.
Building permits must be required for work that must conform to the Uniform Code, subject to permitted exceptions.
effective date: 1984-01-01
“The Uniform Code is applicable in every part of the State (except the City of New York, which was permitted to retain its own code).”
2 more reviewed findings on this topic
Adopted — New York State Uniform Fire Prevention and Building Code applicable in Westchester County.
“The Uniform Code is applicable in every part of the State (except the City of New York, which was permitted to retain its own code).”
Adopted — Building construction in Westchester County under the New York State Uniform Code
“The effective date of the 2025 NYS Uniform Code is December 31, 2025.”
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.”
2 more reviewed findings on this topic
Required — Specified construction elements under the New York State Uniform Code in Westchester County.
“Inspections of certain specified elements of the construction process must be required. Building permits holders must keep work accessible and exposed until inspected and accepted by the municipality.”
Required — Specified elements of construction subject to the Uniform Code
“Inspections of certain specified elements of the construction process must be required. Building permits holders must keep work accessible and exposed until inspected and accepted by the municipality.”
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.”
2 more reviewed findings on this topic
Required — Work requiring a building permit and changes in general occupancy classification in Westchester County.
“A certificate of occupancy or a certificate of compliance must be required (1) for all work for which a building permit was required and (2) whenever the general occupancy classification of a building is changed.”
Required — Work requiring a building permit and changes in general occupancy classification
“A certificate of occupancy or a certificate of compliance must be required (1) for all work for which a building permit was required and (2) whenever the general occupancy classification of a building is changed.”
Zoning districtsPartial
Publication and adoption of zoning districts by New York municipalities statewide; zoning is locally adopted and administered rather than administered by New York State as a single statewide zoning map.
Zoning districts are shown on each municipality’s zoning map.
A New York municipality has the choice whether to adopt zoning and, if adopted, how the zoning regulations will work in the community.
The source states that all New York cities have adopted zoning, while towns and villages may adopt zoning under the applicable enabling laws and local procedures.
District-specific zoning regulations and maps must therefore be obtained from the relevant city, town, or village.
The cited publication discusses local adoption procedures and does not publish a single statewide set of zoning districts.
“Since New York is a home rule state, a municipality has the choice of whether or not to adopt zoning and if it does, how the zoning regulations will work in the community.”
One more reviewed finding on this topic
Partial — New York cities, towns, and villages that enact local zoning laws and zoning districts
“New York’s zoning enabling statutes (the state statutes which give cities, towns and villages the power to enact local zoning laws) require that zoning laws be adopted in accordance with a comprehensive plan.”
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”
One more reviewed finding on this topic
Limited — Construction of a residential individual onsite wastewater treatment system using an alternative system under 10 NYCRR Appendix 75-A.
“Prior to construction of an individual onsite wastewater treatment system utilizing an alternative system pursuant to 10 NYCRR Appendix 75-A, plans for the design of the system shall be reviewed and approved by the State or county health department official having jurisdiction.”
Septic inspectionLimited
Post-construction certification for residential alternative onsite wastewater treatment systems under Appendix 75-A.
A design professional must supervise construction.
The design professional must certify after construction that supervision occurred and that construction conforms to approved plans.
The cited passage establishes certification, not a general periodic inspection schedule for routine operation.
“a design professional shall provide [...] a certification”
Off-grid sanitationAllowed (with conditions)
Use of an individual onsite wastewater treatment system where a municipal or communal wastewater system is unavailable.
The system must comply with statewide Appendix 75-A minimum standards.
Alternative systems require prior review and approval by the State or county health department official having jurisdiction.
Design must be prepared by or under the supervision of a design professional.
“when a municipal or communal system is not available”
Mandatory utility hookupConditional
Residential realty subdivisions, including subdivisions of fewer than 50 lots.
Community water and/or sewers may be required when public services are available, groundwater quality or quantity is poor, or site conditions are unacceptable for onsite wastewater treatment systems.
The source addresses subdivision approval and does not establish a universal statewide connection mandate for every individual residential parcel.
“Yes, if there is good reason such as: public services are available”
Agricultural exemptionConditional
Farm operations located within a New York agricultural district, including associated land, on-farm buildings, equipment, manure processing and handling facilities, and qualifying agricultural practices.
The protection applies only to farm operations in an agricultural district.
Local governments must exercise their planning and land-use authority consistently with Article 25-AA of the Agriculture and Markets Law.
Local governments may not unreasonably restrict or regulate the covered farm operation unless public health or safety is threatened.
Only farm operations are protected; the Department evaluates whether the regulated activity encompasses a farm operation.
The reasonableness analysis considers whether the restriction is unreasonable on its face and as applied to the particular situation, and depends on the totality of the circumstances.
A farmer, municipality, or other eligible requester may seek a Department opinion concerning the effect of a proposed or existing local law or ordinance.
If the Department determines that a local law or ordinance is unreasonably restrictive, it may seek remediation and the Commissioner may issue an order to comply or bring an enforcement action.
“Local governments, when exercising their powers to enact and administer comprehensive plans and local laws, ordinances, rules or regulations, shall exercise these powers in such manner as may realize the policy and goals set forth in this article, and shall not unreasonably restrict or regulate farm operations within agricultural districts in contravention of the purposes of this article unless it can be shown that the public health or safety is threatened.”
2 more reviewed findings on this topic
Conditional — Farm operations within New York agricultural districts seeking protection from unreasonable local planning, zoning, land-use, or permitting restrictions.
“shall not unreasonably restrict or regulate farm operations within agricultural districts in contravention of the purposes of this article unless it can be shown that the public health or safety is threatened.”
Available (with conditions) — Agricultural uses and agricultural-use structures within the Adirondack Park Agency jurisdiction, including relevant Freshwater Wetlands Act and Wild, Scenic and Recreational Rivers System Act permitting contexts.
““Agricultural uses” and “agricultural use structures” are generally exempted from permitting requirements under New York State’s Adirondack Park Agency Act”
Subdividing landLimited
Subdivision review by a town planning board for land outside the limits of an incorporated village in New York.
The town board may authorize and empower the planning board only by resolution.
Town Law § 276 applies to the part of a town outside the limits of an incorporated village.
Subdivision means division of a parcel into lots, blocks, or sites as specified in a local ordinance, law, rule, or regulation, with or without streets or highways, for sale, transfer of ownership, or development.
Local regulations may define subdivisions as major or minor and must set the review procedures and criteria for each.
Preliminary and final plats must comply with applicable State Environmental Quality Review Act requirements.
A final plat receiving conditional approval does not qualify for recording and does not authorize building permits until the required conditions are completed, the plat is signed by an authorized planning-board officer, and the plat is recorded.
An approved final plat must generally be filed with the county clerk or register within sixty-two days after final approval or the approval expires.
minimum unimproved-lot threshold for previously filed plat to be treated as undeveloped: >= 20 percent (unless existing conditions, such as poor drainage, have prevented development) · final plat filing deadline after final approval: 62 days (otherwise approval expires) · partial approved plat filing threshold: >= 10 percent of total lots (remaining sections are subject to the statutory expiration rule)
“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.”
2 more reviewed findings on this topic
Regulated (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.
“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.”
Regulated (with conditions) — Subdivision review in towns outside incorporated villages, where the town board has authorized the planning board to approve subdivision plats.
“the town board may, by resolution, authorize and empower the planning board to approve preliminary and final plats of subdivisions”
Driveway accessRequired
New or modified commercial access to a New York State highway, including changes of use or expansions of existing development on a State highway.
A highway work permit from NYSDOT is required.
The commercial driveway/access permit review generally consists of initial proposal review, design review, and final submission review.
Final submission may require insurance documentation, performance security, permit fees, and additional documentation.
A simple commercial driveway project may qualify for a single-stage expedited review if it meets the applicable criteria.
The page states that the PERM 33-COM application and checklist is used for commercial highway work permit submissions, including minor or major commercial driveways, minor home business driveways, or subdivision streets.
“If your commercial property development plans involve new or modified access to a state highway, or involve any change of use or expansion of an existing development on a state highway, you will need a highway work permit from the New York State Department of Transportation (NYSDOT).”
2 more reviewed findings on this topic
Required — A residence located on a New York state highway when building or modifying a driveway
“If your residence is on a State highway, you will need a permit from the NYS Department of Transportation to build or modify a driveway.”
Required — Building or modifying a residential driveway where the residence is on a New York State highway.
“If your residence is on a State highway, you will need a permit from the NYS Department of Transportation to build or modify a driveway.”
Building in a floodplainRequired
Development in FEMA-mapped Special Flood Hazard Areas in New York State, with local administration by the municipality having jurisdiction.
Local communities participating in the National Flood Insurance Program regulate development in Special Flood Hazard Areas.
Private development is subject to local floodplain development permits.
Development funded and undertaken by the State or Federal government is an exception to the local-permit rule and is regulated by the responsible agency, subject to technical assistance by NYSDEC and FEMA.
Each participating community has a designated floodplain administrator, usually the building inspector or code enforcement official.
The local laws apply to development undertaken by any county, city, town, village, school district, or public improvement district within the community.
The source states that any new structure or structure substantially improved or substantially damaged is subject to floodplain development regulations, with substantial improvement or damage exceeding 50% of the structure’s market value.
substantial improvement or damage threshold: > 50 percent of structure market value
“Private development is subject to local floodplain development permits.”
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”
2 more reviewed findings on this topic
Published (with conditions) — Uniform Code administration and enforcement process applicable in Westchester County.
“Each local government’s program for administration and enforcement of the Uniform Code must conform with the requirements of Part 1203, and must include the following features:”
Published (with conditions) — Commercial property development involving new or modified access to a New York state highway, change of use, or expansion of an existing development on a state highway
“The application and review process generally consists of the following three stages of review:”
Campground & park staysLimited
Temporary camping at New York State Department of Environmental Conservation campgrounds statewide.
All campers must register and obtain a camping permit.
Check-in is from 2:00 p.m. to 9:00 p.m.; campers must register and occupy the campsite by 9:00 p.m. on the first reservation night or the campsite may be re-rented and fees may be forfeited.
Campers must vacate by 11:00 a.m. on the final day.
Camping permits are limited to 14 nights but may be renewed depending on site availability.
From July 1 through Labor Day, only 14 cumulative nights of camping can be obtained at any campground.
Campsite occupancy is limited to 6 persons, two tents or one hard-wheeled equipment and one tent, and two vehicles; occupancy varies for Family campsites.
Violation of any campground rule is grounds for eviction; an evicted person is not entitled to a refund or to return for one week.
maximum permit duration: <= 14 nights (May be renewed depending upon availability of sites.) · seasonal cumulative camping limit: <= 14 nights (From July 1 through Labor Day, at any campground.) · campsite occupancy: <= 6 persons (Occupancy varies for Family campsites.)
“All campers must obtain a camping permit. Campers may check in from 2:00 p.m. to 9:00 p.m. but must register and occupy their campsite by 9:00 p.m. on the first night of their reservation or the campsite will be subject to re-rental and fees may be forfeited. Campers must vacate their campsite no later than 11:00 a.m. on the final day. Camping permits will not be issued for more than 14 nights but may be renewed depending upon availability of sites. From July 1 through Labor Day only 14 cumulative nights of camping can be obtained at any campground.”
county building authorityLimited
County administration and enforcement of the Uniform Code and Energy Code within a local government, including unincorporated town areas, when the local government has opted out or when the Secretary of State designates the county.
Every local government ordinarily administers and enforces the Uniform Code and Energy Code.
A local government may opt out by local law enacted before July 1; the opt-out becomes effective January 1 of the following year.
After a local-government opt-out, the county administers and enforces the codes within that local government.
The county may itself enact a local law opting out; if both local government and county opt out, the Secretary of State administers and enforces the codes.
Counties may charge fees to defray administration and enforcement costs.
A responsible county must establish a code-enforcement program by local law, ordinance, or other appropriate regulation.
local-government opt-out deadline: < July 1 · successor enforcement date: January 1 (the January 1 next succeeding the effective date of the local law)
“The secretary may designate the county in which such local government is located to administer and enforce the uniform code in such local government.”
One more reviewed finding on this topic
Limited — New York counties' administration and enforcement of the Uniform Fire Prevention and Building Code, and county adoption of higher or more restrictive construction standards affecting residential construction.
“In such event the county in which said local government is situated shall administer and enforce such codes within such local government [...] unless the county shall have enacted a local law providing that it will not enforce such codes within that county.”
county zoning authorityNone
New York counties' authority to adopt Euclidean zoning regulations for unincorporated land.
New York State law authorizes zoning power for cities, towns, and villages, not counties.
Counties retain other land-use-related powers under separate statutes and municipal home rule provisions, but those powers are not general county zoning authority.
“No enabling legislation had been adopted that delegates zoning power to counties.”
Inside cities and towns in Westchester County
Municipal rules found while researching the county. They apply inside that city or town, not to unincorporated land.
Zoning districtsPublished
City of White Plains zoning districts and permitted uses, not all of Westchester County.
The source states that the ordinance was adopted June 1, 1981 with amendments.
The source directs questions about permitted uses within zoning districts to the Planning Department.
“Please contact the the Planning Department for questions pertaining to permitted uses within zoning districts.”
Minimum lot sizeSpecified
Planned Residential Development Districts in the City of White Plains.
The 15-acre minimum applies to all uses, ancillary uses, and accessory uses on the entire Development Site.
The minimum is not determined separately for each individual use.
The ordinance also requires 500 continuous feet of frontage on a State or County road.
Other White Plains zoning districts may have different lot-area requirements.
minimum lot area: >= 15 acres (Applies to the entire Development Site rather than separately to each use) · minimum frontage: >= 500 continuous feet (On a State or County road)
“The minimum required “lot area” [...] shall be 15 acres”
SetbacksSpecified
Planned Residential Development Districts in the City of White Plains.
The front yard must be at least 100 feet.
The side yard must be at least 20 feet, with an additional 1 foot for every 2 feet of adjacent building height above 35 feet where applicable.
The rear yard must be at least 20 feet.
The ordinance also provides height-based setbacks from lot lines fronting State or County roadways.
Dimensional requirements not otherwise specified are determined by the approving agency during site-plan approval.
front yard: >= 100 feet · side yard: >= 20 feet (Increase by 1 foot for every 2 feet of adjacent building height above 35 feet where applicable) · rear yard: >= 20 feet
“The “front yard” shall measure at least 100 feet.”
Set by your town or city, not the county
In New York, zoning is adopted by each town or city, so Westchester County has no county-wide answer on these. Find your town or city in the list of places on this page, or call its clerk or zoning administrator.
Lot coverage
Building height
Living in an RV
Camping on your land
Tiny homes
Manufactured homes
Accessory dwellings
Short-term rentals
Still unanswered
We looked and could not find an official answer yet. Silence is not permission — ask the county directly.
Well permit — Private well permit requirements in Westchester 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 Westchester County, New York
Is Westchester County a good place to live off-grid or homestead?
Westchester County scores 35/100 on the Bolthole Index, a marginal county profile. Its strengths: a durable current and mid-century hazard profile and strong self-sufficiency basics: 48.2″/yr rainfall with little drought. Watch-outs: about 555,815 people within a 30-minute drive and higher long-term carry cost.
Do you need a building permit in Westchester County, New York?
Westchester County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Westchester County Department of Health. 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 Westchester County, New York?
Land in Westchester County runs about $11,506 per acre, based on the latest county data.
What is the water situation in Westchester County?
Westchester County gets about 48.2" of rain a year, with severe drought in roughly 5% of years.
How remote is Westchester County?
A representative private-land location has about 555,815 people within a 30-minute drive and 23,603,628 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.
