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Long Island Building Permit Lookup

Pick your town to see who issues building permits, what typically needs one, and how the process works — then let us handle it for you.

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Find your town's building department

Select your Long Island town and we'll show you the building authority, a link to the official department, and your town-specific permit guide.

Typically needs a permit

  • Additions, dormers & second-story builds
  • Removing or moving walls (structural work)
  • New or relocated plumbing & electrical
  • Finishing a basement or attic
  • Decks, porches & larger sheds/garages
  • HVAC installs & oil-to-gas conversions
  • Pools, and some fences & driveways
  • Re-roofing and siding (varies by town)

Usually doesn't

  • Painting, flooring & cosmetic updates
  • Cabinet refacing & countertop swaps
  • Like-for-like fixture replacement
  • Minor repairs and landscaping
Questions & Answers

Long Island Building Permits — FAQ

Do I need a permit to remodel my kitchen or bathroom on Long Island?

A cosmetic remodel (cabinets, counters, fixtures in the same spots) usually doesn't need a permit. But moving plumbing or electrical, removing a wall, or changing the layout does. We pull whatever permits your project needs.

What happens if I build without a permit?

Unpermitted work can mean a stop-work order, fines, trouble selling the home, and insurance problems. It's always cheaper to do it right the first time — and we handle the paperwork for you.

Do you handle the permits, or do I?

We do. Milton's Construction prepares the plans, files with your town's building department, and schedules every inspection through to the Certificate of Occupancy.

How long do permits take on Long Island?

It varies by town and project — anywhere from a couple of weeks to a couple of months for larger structural work. We file early and follow up so your timeline stays on track.

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