Home builders in Smithtown.
Long Island Homeworks has built dormers, additions, and new homes in a central Suffolk town with suburban homes, large backyards, and active permit culture.
Walk-through in Smithtown
Frank or Kevin visits personally — East End coverage included.
General Contractor in Smithtown, Suffolk County
Smithtown is a central Suffolk hub that encompasses several distinct sub-communities — Smithtown village, Kings Park to the west, Nesconset to the south, and St. James to the east. The housing stock spans three generations: 1960s-era Capes and ranches around the village center, larger 1970s–1980s colonials in Nesconset and Kings Park, and a smattering of newer construction near Hauppauge. Large backyards are the norm across almost all of Smithtown — even modest Capes tend to sit on 10,000–15,000 sq ft lots — which gives homeowners flexibility on additions. Shed dormers are the dominant project type on the older Capes, with Kings Park homeowners increasingly requesting full second-story additions that take a 1,300 sq ft ranch to a 2,400 sq ft colonial. The Town of Smithtown Building Department at 99 West Main Street handles all residential permits — our team knows the BD's review cycle and required documentation well. Typical dormer projects in Smithtown run $58,000–$90,000; second-story additions run $130,000–$195,000. We have completed projects in Smithtown proper, Kings Park, Nesconset, and St. James with no travel surcharge.
Dormers, additions & custom homes
Dormer Additions
Full shed and Cape-style dormers in Smithtown. Town permit handled, framed and watertight same day.
Learn moreHome Additions
Second stories, rear builds, primary suites, in-law suites, kitchen extensions in Smithtown.
Learn moreNew Home Construction
Ground-up custom homes and tear-down rebuilds in Smithtown. Fixed-price contracts.
Learn moreFrequently Asked Questions About Building in Smithtown
Do you build dormers in Smithtown, NY?
Yes — Smithtown and the surrounding hamlets (Kings Park, Nesconset, St. James) are a core part of our Suffolk County service area. Long Island Homeworks holds Nassau County license H-1609230000 (valid in both Nassau and Suffolk) and has completed dormer additions and second-story builds on Smithtown's Capes and colonials. All Smithtown permits are filed through the Town of Smithtown Building Department at 99 West Main Street — we manage every filing from drawings through inspection sign-off.
How much does a dormer addition cost in Smithtown, NY?
Dormer additions in Smithtown typically run $58,000–$90,000 depending on size and scope. A standard shed dormer on a Smithtown Cape converting a half-story to a primary suite with full bath runs $60,000–$78,000 with permits included. Full second-story additions on Nesconset and Kings Park ranches run $130,000–$195,000. Frank provides a fixed-price written contract at the scoping visit.
Do I need a permit for a dormer in Smithtown?
Yes. All Smithtown residential building permits are issued by the Town of Smithtown Building Department at 99 West Main Street in Smithtown village. Structural dormer additions and second-story builds require a building permit plus an engineering review. Lisa, our permit coordinator, prepares all drawings and manages the Town of Smithtown filing process. Typical turnaround is 4–8 weeks.
How long does a Smithtown dormer project take?
Design and Town of Smithtown permitting takes 8–14 weeks. Once permits are issued, a standard shed dormer on a Smithtown Cape or split takes 6–9 weeks to complete. Full second-story additions run 4–6 months. We provide a Gantt chart with all milestones at the scoping visit.
Do you serve Kings Park and Nesconset?
Yes — Long Island Homeworks serves all Smithtown Town communities including Smithtown village, Kings Park, Nesconset, St. James, Hauppauge (Smithtown section), and Head of the Harbor. All fall under Town of Smithtown Building Department jurisdiction. Same pricing, same permit process, no travel surcharge from our Hicksville base.
Ready to build in Smithtown?
Free on-site consultation. Permits handled. East End coverage for new construction.
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