Planning an interior renovation in the Village of Lindenhurst

Who covers the address

Village of Lindenhurst or North Lindenhurst?

The Suffolk County Clerk's district code table lists "Lindenhurst Inc." in bold, its marker for an incorporated village, under the Town of Babylon. North Lindenhurst is not listed on that table, and Copiague, a neighboring name, appears as a plain Babylon name rather than a village. Suffolk County's towns-and-villages directory lists Lindenhurst among the villages in the Town of Babylon.

The Town of Babylon page already explains the town-versus-village split for Amityville, Babylon and Lindenhurst, and the town's own records route. This page goes further for houses inside the Village of Lindenhurst only.

Prepare the file

What the village building permit file asks for

The village's building permit application (PDF dated August 2026) lists its requirements. The items most relevant to an interior renovation in a house are:

• A building permit application with the property owner's signature notarized; proof of ownership may be required.
• A survey dated not more than five years earlier, showing all structures on the property. Faxed and illegible surveys are not accepted.
• Legible plans drawn to scale with construction details and code-compliance methods, for example framing, window sizes and types, and smoke detector locations. Plans for projects involving structural issues must be signed by an architect or engineer licensed in New York State.
• Eight photographs showing the entire property.
• Proof of workers' compensation and disability insurance or a waiver form; the form says ACORD forms are not acceptable.
• A non-refundable filing fee, and a permit fee the form bases on the estimated cost of construction (doubled for legalizing existing structures). Check the current amounts with the village before budgeting.

The village building permits page adds that applications submitted from December 31, 2025 must comply with the 2025 Edition of the New York State Uniform Fire Prevention and Building Code, and advises making sure plans fully comply before submission.

1. Find the most recent survey you have and check its date against the five-year line.
2. Request the house's Certificate of Occupancy using the village's CO search request form, sent to the Building Department by email.
3. Take the property photographs early; they are easy to forget and cheap to do.
4. Ask each bidder which plans their scope would need and who would prepare and sign them.

Kitchens and bathrooms

Plumbing and electrical sign-offs are tied to the CO

The same application says a plumbing permit is required for any installation of heating, bath fixtures and similar work, and that the building permit will not be released until a plumbing permit application has been submitted. It says an electrical certificate is required if any electrical work is being done or has been done, and that no Certificate of Occupancy will be issued without an electrical certificate and plumbing approval.

The village's plumbing page says plumbing inspections are by appointment only and describes master plumber's licenses issued by the village for a three-year period.

For scope examples, see bathroom remodeling and kitchen remodeling; comparing estimates shows how to check that sign-offs are included.

Use comes before the building permit

Two-family houses and a second kitchen: the village asks first

The building permit application says that if proposed alterations would convert the dwelling to a temporary two-family residence, or add a second kitchen for personal use, a two-family use application must be granted before the building permit is issued.

The village's Two-Family page says a first-time two-family permit needs a notarized application, followed by an inspection and a public hearing, with items such as the deed, the CO, a recent survey, floor plans for each unit and a parking plan for four vehicles. It says two-family permits are renewed every year, with a public hearing every four years unless otherwise stated, and that second-kitchen permits carry a public hearing every two years. The Two-Family Review Board meets on the fourth Thursday of the month, except as noted, with no meetings in August or December. Separately, the village says rental permits are renewed every two years.

• If the house already holds a two-family or second-kitchen permit, keep a copy with the project file and tell bidders.
• If a kitchen project would create a second kitchen, raise it with the village before design work, not after.
• For a two-family house, write one brief per unit; the two-family project brief article shows how.

Scheduling and site checks

Inspections, flood zones and wetlands

The village building permits page says building inspections are by appointment only, on Mondays, Tuesdays, Thursdays and Fridays, in a morning window and an afternoon window. A schedule that assumes inspections on other days will not match the village's published pattern.

The building permit application says all new structures within a flood zone will require an elevation certificate from a surveyor before a Certificate of Occupancy, and that a property in freshwater or saltwater wetlands needs a permit from the New York State Department of Environmental Conservation, with a copy submitted with the building permit application. Check the address on FEMA's flood map (linked from the Suffolk County hub) and ask the village whether anything applies to an interior project.