Home builders in Southampton.
Long Island Homeworks has built dormers, additions, and new homes in an East End Hamptons village known for premium estate properties and high-end new construction.
Walk-through in Southampton
Frank or Kevin visits personally — East End coverage included.
Dormers, additions & custom homes
Dormer Additions
Full shed and Cape-style dormers in Southampton. Town permit handled, framed and watertight same day.
Learn moreHome Additions
Second stories, rear builds, primary suites, in-law suites, kitchen extensions in Southampton.
Learn moreNew Home Construction
Ground-up custom homes and tear-down rebuilds in Southampton. Fixed-price contracts.
Learn moreFrequently Asked Questions About Building in Southampton
Do you build in Southampton?
Yes — we hold Suffolk County license 46721-HI and are active in Southampton. We pull every applicable town-level permit (Huntington, Smithtown, Babylon, Brookhaven, Islip, Southampton, East Hampton, etc.).
Do I need a permit for a dormer or addition in Southampton?
Yes — nearly every structural addition in Suffolk requires one. Lisa, our permit coordinator, handles the filing from drawings through inspection close-out. All permit costs are itemized in the estimate.
How long does an addition take in Southampton?
Design and permit filing: 2–4 months. Dormer: 6–9 weeks to finish after permit issue. Second-story addition: 4–6 months. Custom new construction: 12–16 months. You get a Gantt chart at your first scoping visit.
Do you work in the Hamptons?
Yes — East End new construction is a growing share of our book. We're familiar with the Southampton and East Hampton architectural review boards, CCA coastal requirements, and FEMA flood-zone builds.
Ready to build in Southampton?
Free on-site consultation. Permits handled. East End coverage for new construction.
Mon–Fri, 7am to 6pm | Saturdays by appointment · Call or text anytime