If you need to legalize an unpermitted structure in Westchester County NY, N3 coordinates the path back to compliance. Finished basements, decks, additions, and converted spaces built without a permit routinely surface during a sale or refinance, and the current owner inherits the problem no matter who did the work. We coordinate the as-built drawings, the retroactive application, the inspections, and the updated records so the property can close. N3 is a coordinator and advocate, not a builder or attorney.
Unpermitted work blocks a clean sale, complicates insurance, and can force emergency fixes at the worst time. Resolving it on your schedule, not the buyer’s, is almost always cheaper and calmer.
Legalization generally runs: as-built drawings of what exists → a retroactive (as-built) permit application → any code corrections the town requires → inspection → an updated certificate of occupancy. N3 coordinates a retroactive permit and the as-built set in Westchester, manages open permit resolution in Westchester where old permits were never closed, and keeps the town moving to a final sign-off.
We document what exists with accurate as-built drawings.
We file a retroactive (as-built) permit application.
We complete any code corrections the town requires.
The town inspects the work for code compliance.
You receive an updated certificate of occupancy.
A finished basement without legal egress or a matching CO.
A deck built without a permit.
An addition or converted garage completed without the proper permits.
An apartment or living unit created without town approval.
Most Westchester towns treat legalization administratively: expect the standard permit fee, sometimes a penalty multiplier for work already done, and possibly corrective work to meet current code. N3 gives you a realistic picture up front rather than a surprise at inspection.
A: Often the practical move is a professional letter to your attorney documenting scope and timeline so the deal can proceed while the permit is in process. We help produce that and run the legalization in parallel.
A: Sometimes, if concealed work cannot be verified or does not meet code. We identify that risk early rather than at inspection.
A: Yes, finished basements are the single most frequent unpermitted item we see in Westchester.
