Village of Williston Park Building Permits

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Williston Park is a village in the Town of North Hempstead, and permits go to the Village. The Village's rule: call the Building Department before you start any renovation.

Village of Williston Park Building Department (not us)

Address: 494 Willis Avenue, Williston Park, NY 11596
Phone: 516-877-1521
Hours: Monday–Friday, 8:00am–4:00pm. Call for an appointment.
Permit portal: None. Williston Park files on paper at Village Hall.
Permit rules: Building Department
Local code: Code of the Village of Williston Park
Forms: Applications & forms

Permits We Handle in Williston Park

Village of Williston Park Building Permit Fees

Williston Park sets each building permit fee from the estimated cost of the work, as determined by the Building Department. Residential plumbing, gas and HVAC permits start at $150.

Fees charged by the Village of Williston Park Building Department
Permit	Fee
Building permit	Set from the estimated cost by the Building Department
Plumbing permit, residential	$150, plus $50 per fixture
Gas or oil permit, residential	$150, plus $50 per appliance
HVAC permit, residential	$150, plus $50 per unit
Generator permit, residential	$500
Solar permit	$1,000 up to 25 panels, plus $50 per panel over 25
Certificate of occupancy	$100, plus $50 per copy

Working without a permit costs three times the original permit.

Source: Village of Williston Park: 2026 Fee Schedule (PDF) (opens in a new tab). Checked October 23, 2026.

How Filing Works in Williston Park

On paperForms come from the Village Clerk and are dropped off at Village Hall.
PlansTwo sets, signed, with a plot plan drawn to scale.
ApprovalThe Board of Trustees approves every building permit.
Design reviewThe Building Inspector reviews how the outside will look.

Selling your house? Close your open permits first.

Open permit close-outs

How We Help in Williston Park

Complete packages. Plans, plot plan, elevations and forms, ready for the Board.
We track it through Board approval, inspections and the CO.
Need a variance? We refer you to a zoning/land-use attorney and keep the permit moving.

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 Williston Park, 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

Williston Park Permit Questions

What work needs a permit in Williston Park?

The Village Code says building, enlarging, altering, removing, demolishing or converting any building or structure needs a permit, as does a change of occupancy. Small repairs that aren't structural don't.

Who approves my permit?

The Board of Trustees, acting as the Village Building Committee, approves or denies every building permit application. The Building Inspector issues the permit after that. Variances go to the Zoning Board of Appeals.

What goes in a Williston Park application?

The Village Clerk's form, with the use of the land and building, the value of the work, and the owner and applicant. Add two sets of signed plans with a plot plan drawn to scale. For design review, include front and side elevations, the outside materials and a site plan showing driveways and parking.

How long is a permit good for?

Six months. The Board can grant up to two 3-month extensions.

How do I get my certificate of occupancy?

A CO is needed before anyone moves in. New work needs a sworn statement from the architect or engineer that it was built to the approved plans, plus an up-to-date survey. Violations found at inspection must be fixed within 15 days.