Administrative overview · FIPS 36059
Nassau County permit authority
The first compliance decision is jurisdictional: identify the office with statutory authority over your parcel, then use its filing and inspection sequence to keep the project moving.
Jurisdictional status
Municipal Fallback
This profile identifies a handoff outside the county’s ordinary structural permitting lane.
Required jurisdiction check
Confirm the controlling local or state authority before filing.
The record is marked Municipal Fallback. That means the county profile should be treated as a routing brief: incorporated municipalities, a state building department, or a state fire marshal may control plan review, permits, and inspections. Contact the named agency below and verify the parcel’s jurisdiction before paying a fee or scheduling field work.
Responsible agency
Nassau County Department of Public Works/Planning Commission for County-road and related reviews, and the applicable city, town, or village building department
For a project in or near Nassau County, this office is the identified point of contact for permit intake, statutory code enforcement, plan review coordination, and inspection release conditions. Confirm the parcel’s boundary and project type before relying on the county lane.
Direct contact
Nassau County Planning Commission: 516-571-5844; DPW: 516-571-6900
Call before mobilizing if the project has a boundary, occupancy, fire, septic, or utility question.
Permit counter
Nassau County Department of Public Works, 1194 Prospect Avenue, Westbury, NY 11590-2723; actual permit office varies by municipality
Operating hours
N/A; municipal office hours vary
Review expectation
N/A; municipal review timing varies. Nassau County’s §239-f building-permit review is generally reported to the municipality within 10 working days when applicable.
Compliance workbench
Choose the next project decision.
Apply online
Open the verified digital gateway, application form, and review timeline.
Open guide →Fees & penalties
Understand fee schedules, enforcement exposure, and stop-work liabilities.
Open guide →Codes & exemptions
Read the code framework, minor-work exemptions, and inspection lane.
Open guide →Agency website
Visit the primary public source for current notices and contact changes.
Open guide →Source trail
Official sources for this profile
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
Frequently asked questions for Nassau County
Who handles permitting for this jurisdiction?
This record is marked Municipal Fallback. Confirm whether a city, state agency, or other local authority controls the parcel before filing.
How should I begin an application?
Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact Nassau County Planning Commission: 516-571-5844; DPW: 516-571-6900.
How long might review take?
N/A; municipal review timing varies. Nassau County’s §239-f building-permit review is generally reported to the municipality within 10 working days when applicable.
How are inspections scheduled?
Contact the city, town, or village building department listed by Nassau County for the property’s location. For demolition, obtain the County Health Department rodent-free certificate before disturbing the site; for County roads or utilities, coordinate with Nassau County DPW.
Which codes and exemptions should I review?
Nassau County’s official pages state that the County does not issue ordinary building permits; authority rests with the towns, villages, and cities. The applicable municipality administers the 2025 New York State Uniform Fire Prevention and Building Code and 2025 Energy Conservation Construction Code, effective December 31, 2025, plus local laws. Nassau County may review County-road, sewer, subdivision, fire-marshal, or other specialized permits. No countywide private-building exemption list was identified. The local building authority determines exemptions for ordinary repairs, cosmetic work, agricultural structures, sheds, fences, and finish work. Demolition generally requires a local permit plus a Nassau County Health Department rodent-free certificate.