Basement Legalization in Nassau County

Finished basements, bathrooms, kitchen removals and cellar entrances, legalized with your town.

Call or Text 516-399-0139 Get a Free Quote

4.6on Google (11 reviews)

Is This You?

Selling or refinancing
The search found a basement with no permit.
Got a violation notice
We handle the permits to cure it.
Finished years ago
A past owner or contractor skipped the permit.

What the Town Usually Asks For

A current surveyWe order it for you, with no markup.
Drawings of what was builtWe line up the plans.
Plumbing and electrical sign-offsWe coordinate them with the town inspections.

Blueprint cutaway of a basement with an outside cellar entrance stairway and window well

What We Legalize

Finished basements
Basement bathrooms
Kitchen removals
Basement storage spaces
Boilers and mechanicals moved or replaced without a permit
Cellar entrances, new or existing

Bright finished basement family room with sofa, high windows and recessed lighting

How Basement Legalization Works

Step 1: Free consultation
Step 2: Records reviewYour CO and permit history.
Step 3: Survey and plans
Step 4: Filing and commentsWe answer comments and resubmit.
Step 5: Inspections and close-out

Typical time: 4–8 weeks.**Typical time is based on an average basement legalization, assuming no extra work or construction needs to be done and the building department accepts the permit application.

Basement Questions

Can my finished basement be legalized?

In many cases, yes. We review your property records and the work in a free consultation and tell you what the town will likely need.

Why do I need plans for something that's already built?

Towns usually require a current survey and drawings that show what was built. We coordinate all of that for you.

Can a basement apartment be legalized?

It depends on your town's zoning, and every municipality is different. A common path is removing the extra kitchen (with a plumbing permit) and legalizing what remains as finished space. If your property needs a variance or a zoning hearing, we'll flag it early and can refer you to a zoning/land-use attorney.

What does a kitchen removal involve?

Removing a basement kitchen typically needs a plumbing permit, for example for sink and stove removal with a gas pressure test.

I bought a home with a mother-daughter. Do the permits carry over?

No. Mother-daughter permits don't transfer when ownership changes. All owners must get their own permits, and we do these.

Do you handle cellar entrances?

Yes. An outside entrance to the basement is its own permit item. We handle proposed new cellar entrances with stairways, and existing ones built without a permit. Like other exterior work, it typically needs a current survey and a site plan. We order the survey for you with no markup.

I got a violation for an illegal basement apartment. Can you help?

Yes. We review the notice and handle the permits, plans and inspections needed to cure it. Once you hire us, we can provide an engagement letter you can bring to court to show you're working to cure the violation. We don't go to court. See Code Violations.