Sunroom Contractor — Nassau County, NY

Every Nassau County community we serve

We hold Nassau County Home Improvement Contractor License #H2298740 and have worked with the Nassau County Building Department on hundreds of permits. We know the setback rules, the permit timeline, and which inspectors require what documentation.

Communities we regularly serve in Nassau County:

• Massapequa, Massapequa Park, Amityville
• Levittown, Hicksville, Bethpage, Farmingdale
• Garden City, Mineola, Garden City Park
• Valley Stream, Lynbrook, Rockville Centre, Baldwin
• Merrick, Bellmore, Wantagh, Seaford
• Oceanside, Long Beach, Island Park
• Great Neck, Manhasset, Port Washington
• Floral Park, New Hyde Park, Elmont
• Hempstead, North Hempstead, Oyster Bay (Town of)
• Gilgo Beach — barrier beach, waterfront four-season rooms
• Matinecock — North Shore estate homes, thermally broken aluminum, triple-pane glass

If your town isn't listed, call — we cover the whole county.

Nassau County sunroom permits: what to know

Nassau County requires a building permit for any attached room addition, sunroom, or enclosed porch. The process goes through the Nassau County Department of Public Works (for permit-required work) or your local town building department depending on where you live.

We handle the entire permit application as part of every project — drawings, filings, fee payments, and inspection scheduling. Permit approval in Nassau County typically takes 4–8 weeks depending on the town.

Review 1: "We're in Wantagh, and Anthony showed up exactly when he said he would for the estimate. The permit process was handled completely by their office. We never had to make a single call to the building department." --- Karen B., Wantagh

Review 2: "Third-generation Levittown family. We've seen a lot of contractors come through. These guys do what they say. Four-season room came in on quote, passed inspection first try." --- Joseph R., Levittown

Solariums & all season sunrooms in Nassau County

Looking for a solarium in Nassau County? We build glass-walled, glass-roof room additions (solariums and conservatories) as well as standard all season sunrooms throughout every Nassau County community. Solariums start at $55,000 and are popular in Manhasset, Muttontown, Syosset, and Massapequa.

All season sunrooms (four-season rooms with full insulation and HVAC) run $35,000–$85,000 and are our most-requested product in Nassau County. Read our complete solarium guide or sunroom cost guide for detailed pricing.

Nassau County sunroom resources

• Sunroom Cost Guide — Long Island 2025 — detailed pricing by room type
• Solariums on Long Island — glass-walled room additions explained
• Four-Season vs. Three-Season Sunroom — which one is right for you
• Sunroom Permits Nassau & Suffolk County — timeline and requirements