Home builders in Great River.
Long Island Homeworks has built dormers, additions, and new homes in a South Shore hamlet of 1950s-60s Capes and ranches on compact lots where second-story additions are the usual answer to a small footprint.
Walk-through in Great River
The owner or our new build superintendent visits personally — East End coverage included.
Dormers, additions & custom homes
Dormer Additions
Full shed and Cape-style dormers in Great River. Town permit handled, framed and watertight same day.
Learn moreHome Additions
Second stories, rear builds, primary suites, in-law suites, kitchen extensions in Great River.
Learn moreNew Home Construction
Ground-up custom homes and tear-down rebuilds in Great River. Fixed-price contracts.
Learn moreFrequently Asked Questions About Building in Great River
Do you build in Great River?
Yes — we hold Suffolk County license HI-69024 and are active in Great River. 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 Great River?
Yes — nearly every structural addition in Suffolk requires one. Our permit coordinator, 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 Great River?
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 Great River?
Free on-site consultation. Permits handled. East End coverage for new construction.
Mon–Fri, 7am to 6pm | Saturdays by appointment · Call or text anytime