Compare home addition estimates in Long Island, NY
Free home addition quotes in Long Island, New York. Typical range $58,500 – $182,000.
Low
$58,500
Average
$110,500
High
$182,000
Long Island crews quote about $195 – $585 per square foot.
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What drives home addition prices in Long Island
Local labor, permitting and climate move Long Island prices away from the national average.
Labor market
Nassau and Suffolk crews are busy year round with premium suburban pricing.
Permits
Town-level permits vary widely and can be slow.
Climate
Coastal wind zones and nor easters affect roofing and siding.
How to compare Long Island quotes
- Collect three written quotes. Anything under $43,875 usually has scope missing.
- Compare line items — materials, labor, permits, disposal — not just the total.
- Confirm license, insurance and workmanship warranty length before you sign.
- Ask what triggers a change order and how it gets priced.
Long Island questions
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