Westchester has more than 40 separate municipalities — cities, towns, and villages — and most run their own building department, zoning code, and boards. N3 is a building permit expediter Westchester County NY homeowners, builders, and investors use to work through that patchwork: we confirm who has jurisdiction, prepare and file the permit, coordinate the boards it depends on, and follow it through to the certificate of occupancy.
If the property is inside an incorporated village, the village — not the surrounding town — usually issues the building permit and hears variances. Confirming jurisdiction is the first step, and it is where out-of-area contractors most often go wrong.
Many Westchester villages and towns require architectural review board approval for exterior changes, frequently before the building permit can be issued.
Where a property is not on public sewer or water, the Westchester County Department of Health reviews septic and well designs.
Parts of northern Westchester drain to New York City reservoirs, where NYC Department of Environmental Protection rules can add septic and stormwater review.
Every Westchester department has its own application forms, submission checklist, and review queue. We check the property’s permit history and zoning first, assemble a package that matches that department’s checklist, answer plan-review comments in one complete response, and schedule inspections through to close-out. The full process is described on our building permit expediting page.
When an addition, pool, or new home breaks a setback, height, or lot-coverage rule, the answer is usually an area variance from the local ZBA. We assess the case against New York’s five-factor test before you pay for drawings, prepare the application and narrative, handle notice and mailing requirements, and present at the hearing. See how our zoning variance consulting works.
Site plan review is standard for commercial and multi-family work and, in some Westchester municipalities, applies to homes on steep slopes, near wetlands, or in special districts. We prepare the application, coordinate your engineer’s plans and drainage report, answer the board consultants’ comments, and track conditions to sign-off. More on our planning board and site plan approvals service.
Many Westchester villages and towns review exterior materials, colors, windows, and massing through an architectural review board or board of architectural review. We organize elevations, material cut sheets, and neighborhood photographs the way the board reviews them, and present the application — so the ARB does not become the step that holds up your building permit.
Open permits and missing certificates of occupancy surface most often during a sale. We pull the building department file, give you a written list of what is missing, coordinate the contractor, engineer, or inspection agency for each item, and attend the final inspection. Learn more about our certificate of occupancy help.
Finished basements, decks, sunrooms, and additions built without a permit are common in Westchester’s older housing stock. We compare the file with what is actually built, coordinate as-built drawings, file the retroactive permit, and manage inspections and any corrections. Read how we approach legalizing unpermitted work.
Accessory apartment rules differ across Westchester municipalities — owner occupancy, maximum size, parking, and which board grants approval all vary. As your accessory apartment permit consultant in Westchester County, we confirm whether a unit is allowed on your lot before design, then manage the approval, permit, and certificate. See our accessory apartment permits service.
Buildable land in Westchester is scarce, and the lots that remain often carry steep slopes, wetlands, rock, or septic limits. Before you buy, we check zoning, environmental constraints, utilities, access, and the likely cost of site work. The full scope is on our pre-purchase land evaluation page.
For owners building a new home — and for investors who need a speculative home building consultant — we coordinate contractor selection, lender paperwork, scheduling, and inspections, and review options such as smart home technology and energy systems before they are locked into the plans. See our new home construction project management service.
Modular construction can shorten time on site, but Westchester lots with tight access or steep grades may not accommodate delivery trucks and a crane. Browse our modular home plans, then have us check how a design fits your lot and your municipality’s zoning.
Mount Kisco and Scarsdale are each both a town and a village under one government. Hamlets such as Chappaqua, Katonah, and Mohegan Lake are part of their towns, and the town handles approvals.
We confirm which city, town, or village has authority before anything is drawn or filed.
Building department, ZBA, planning board, and ARB — one file, one contact, one written log.
If the property is inside an incorporated village, the village usually does; otherwise the town or city does. We confirm this from municipal records before filing.
It varies by municipality, scope, and whether a variance, site plan, or ARB approval is needed first. We give you a written estimate after reviewing the property.
Many Westchester villages and some towns require it for exterior changes. We check the local code and include the ARB submission in the schedule if it applies.
Yes. We prepare the application and narrative, handle notice requirements, and present at the hearing. For contested or legally complex cases we recommend a land-use attorney and work alongside them.
Yes — cities, towns, and villages across the county.
Permits that depend on septic, well, and watershed approvals across Putnam’s six towns.
Zoning variances, new-home permits, driveways, and subdivisions from Beacon to the Connecticut line.
Permit expediting, certificates of occupancy, and zoning approvals across Orange County.
Not sure which county page fits your project? Start with all Hudson Valley service areas.
Send us the address and a short description. We will confirm which municipality has jurisdiction, which approvals apply, and the first step.