Home builders in Old Westbury.
Long Island Homeworks has built dormers, additions, and new homes in a North Shore community of pre-war colonials and Tudors with post-war ranches behind them where additions have to respect the existing architecture to look right.
Walk-through in Old Westbury
The owner visits personally — no travel fees in Nassau.
Dormers, additions & custom homes
Dormer Additions
Full shed and Cape-style dormers in Old Westbury. Town permit handled, framed and watertight same day.
Learn moreHome Additions
Second stories, rear builds, primary suites, in-law suites, kitchen extensions in Old Westbury.
Learn moreNew Home Construction
Ground-up custom homes and tear-down rebuilds in Old Westbury. Fixed-price contracts.
Learn moreFrequently Asked Questions About Building in Old Westbury
Do you build in Old Westbury?
Yes — Old Westbury is firmly inside our service area. We hold Nassau County HIC #198901 and pull the applicable town-level permit for Old Westbury jobs. No travel fees within Nassau.
Do I need a permit for a dormer or addition in Old Westbury?
Yes, for almost any structural dormer or addition in Old Westbury. Our permit coordinator, our permit coordinator, manages the filing end-to-end — from drawings through inspection sign-off. Permit costs are itemized in the estimate, not a surprise.
How long does an addition take in Old Westbury?
Design and permitting: 2–4 months. A typical dormer runs 6–9 weeks to completion after permit issuance. A second-story addition is 4–6 months. New construction runs 12–16 months. We build Gantt charts at the scoping visit.
Can you work on older Old Westbury homes?
Absolutely — it's a lot of what we do. Pre-war colonials, mid-century Capes, and ranches all benefit from additions. We match existing soffits, trim profiles, and rooflines carefully. The owner reviews every heritage-match detail personally.
Ready to build in Old Westbury?
Free on-site consultation. Permits handled. No travel fee in Nassau County.
Mon–Fri, 7am to 6pm | Saturdays by appointment · Call or text anytime