Home builders in Syosset.
Long Island Homeworks has built dormers, additions, and new homes in a North Shore hamlet of large lots where full new-home construction and major additions are common.
Walk-through in Syosset
Frank visits personally — no travel fees in Nassau.
Dormers, additions & custom homes
Dormer Additions
Full shed and Cape-style dormers in Syosset. Town permit handled, framed and watertight same day.
Learn moreHome Additions
Second stories, rear builds, primary suites, in-law suites, kitchen extensions in Syosset.
Learn moreNew Home Construction
Ground-up custom homes and tear-down rebuilds in Syosset. Fixed-price contracts.
Learn moreFrequently Asked Questions About Building in Syosset
Do you build dormers in Syosset, NY?
Yes — Syosset is a high-demand area for Long Island Homeworks. We hold Nassau County license H-1609230000 and have completed dormer additions and full second-story additions on Syosset's large-lot colonials and expanded ranches along Jericho Turnpike, Cold Spring Road, and the Woodbury Road corridor. Syosset falls under the Town of Oyster Bay building department — we manage all permits from drawings to inspection sign-off.
How much does a dormer cost in Syosset, NY?
Dormer additions in Syosset typically run $65,000–$110,000 depending on size and scope. Full second-story additions on Syosset ranches and colonials (a common project type given the large lot sizes) run $165,000–$250,000. A shed dormer converting a Syosset cape half-story to a primary suite runs $68,000–$88,000 with permits. Frank provides a fixed-price written contract.
Do I need a permit for a dormer in Syosset?
Yes. Syosset is in the Town of Oyster Bay building department jurisdiction. Structural dormer additions and second-story additions require a building permit. Lisa, our permit coordinator, prepares all drawings and manages all filings with the Town of Oyster Bay. Typical turnaround is 4–8 weeks.
How long does a Syosset dormer project take?
Design and Town of Oyster Bay permitting takes 8–14 weeks. Once permits are issued, a typical shed dormer on a Syosset home takes 6–9 weeks to complete. Full second-story additions run 4–6 months. You receive a Gantt chart at the scoping visit.
What builders work in Syosset, NY?
Long Island Homeworks is based in Hicksville, 10 minutes from any Syosset address. We serve all of Syosset, Woodbury, Jericho, and Old Bethpage with no travel surcharge. Nassau license H-1609230000, 618 projects since 2008, 4.9-star Google rating.
Ready to build in Syosset?
Free on-site consultation. Permits handled. No travel fee in Nassau County.
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