Village of Old Westbury Building Permits

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Old Westbury is a village mostly in the Town of North Hempstead, with a small part in the Town of Oyster Bay, and permits go to the Village. The Village's rule: the Village Engineer certifies building volume before any permit is issued.

Village of Old Westbury Building Department (not us)

Address: 1 Store Hill Road, Old Westbury, NY 11568
Phone: 516-626-0800
Permit portal: None. Applications, plans and surveys are submitted together, in person.
Permit rules: Building Department
Local code: Code of the Village of Old Westbury
Forms: Forms & applications

Permits We Handle in Old Westbury

Village of Old Westbury Building Permit Fees

A residential addition or alteration permit in Old Westbury costs $0.30 per cubic foot of volume, at least $2,500, plus a $150 application fee, an infrastructure fee and a $250 certificate fee.

Fees charged by the Village of Old Westbury Building Department
Permit	Fee
Addition or alteration	$0.30 per cubic foot or $2,500, whichever is greater, plus $150 application, $1,200 or $1,750 infrastructure and $250 certificate
New house	$0.30 per cubic foot, plus $150 application, $300 permit, $3,500 infrastructure and $250 certificate
Fence	$150 application, $500 permit and $250 certificate
Swimming pool or sports court	$150 application, $1,000 permit, $1,200 infrastructure and $250 certificate
Demolition of a house	$150 application, $1,500 permit and $1,750 infrastructure

Keeping an existing structure built without a permit costs three times these fees.

Source: Village of Old Westbury: Building Department General Information, rev. July 8, 2026 (PDF) (opens in a new tab). Checked October 21, 2026.

How Filing Works in Old Westbury

In personApplications, plans and surveys go in together, in person.
Volume checkThe Village Engineer certifies building volume before the permit.
Plans in duplicateSealed quarter-inch plans with zoning, setbacks and volume.
Water serviceThe water service and meter pit are upgraded before the permit.

Selling your house? Close your open permits first.

Open permit close-outs

How We Help in Old Westbury

Volume done right. Plans that match dimension for dimension, with revisions printed on vellum.
Architectural review. We prepare jobs that add 20% or more surface area for the Planning Board Sub-Committee.
We close it out with the architect's letter, final survey and every certificate the CO needs.

Decks, fences, sheds and pools: about 2–4 weeks. Other jobs: about 4–8 weeks on average.* It varies by village and scope.*Typical time is based on an average job in the Village of Old Westbury, assuming no extra work or construction needs to be done and the building department accepts the permit application.

Rolled blueprints and a permit folder on a pickup tailgate in front of a home renovation

Old Westbury Permit Questions

What permits does Old Westbury issue?

Additions and alterations, new homes, demolition, drywells and cesspools, elevators, fences, gas, gates and retaining walls, generators, sprinklers, solar, street openings, pools, tanks, tennis courts, tree removal, water service, wells, irrigation and backflow prevention.

Source: Village of Old Westbury: Forms & Applications (opens in a new tab)

What is volume certification?

Before any building permit, for new homes and alterations alike, the Village Engineer certifies the building's volume from plans sealed by an architect. The plans must be dimensionally consistent, and revisions are printed on vellum.

Source: Village of Old Westbury: Volume Certification Information (PDF) (opens in a new tab)

When does a job need architectural review?

The Planning Board Sub-Committee reviews structures, alterations and homes that add 20% or more surface area. Variances go to the Board of Zoning Appeals.

Source: Village of Old Westbury: Boards & Commissions (opens in a new tab)

What does the Village need for a CO?

Two sealed final surveys, the electrical certificate, the architect's letter on volume, zoning, strapping and the Energy Code, and a final inspection. Add drywell certification, the pressure test letter and meter pit approval. New homes also need county health approval for the cesspool and finished landscaping, inspected with the ARB Chairman.

Source: Village of Old Westbury: Building Department General Information (PDF) (opens in a new tab)

How long is an Old Westbury permit good for?

Work must start within 6 months, and the permit expires after 12 months.

Source: Village of Old Westbury Code, Ch. 74 (opens in a new tab)

Do I need a permit to rent out my home?

Yes. A rental property permit is good for one year. The application goes in person, in two copies, and the Superintendent's inspection is scheduled when you submit. We don't file rental permits; this is for your information.

Source: Village of Old Westbury: Rental Property Application (PDF) (opens in a new tab)

History of Building Codes