General contractors in Smithtown, NY 11780
27 general contractors, with local market data for this ZIP.
General contractors 27Concrete and masonry 4Electricians 3HVAC 2Remodeling 1Fences and decks 1Excavation and demolition 1Other construction trades 1Roofing and exteriors 1Carpentry, drywall and windows 1
Area profitability, construction62 / 100Strong market, crowded field
Typical home value$855,000+8.2% in the past year
New homes permitted, 20251,399Suffolk County
Homeowners87.4%5,576 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
AJM Mechanical SolutionsGeneral contractor · 779 Middle Country Rd, Smithtown(631) 433-9230 · ajmmechanicalsolutions.com
Amark ConstructionHome builder · 255 3rd St, St James(631) 388-3608 · amarkconstruction.com
Andate Construction & RestorationConstruction company · 932 Middle Country Rd, St James(631) 656-9493 · andateconstruction.com · 1 driver, 1 truck
Andate Kitchen Bath & BeyondGeneral contractor · 932 Middle Country Rd, St James(631) 656-9494 · andatekitchenbath.com
Blackstone Surfaces and DesignGeneral contractor · 8 Flowerfield, Smithtown(631) 767-4109 · blackstonesurfaces.com
Brown & Company Contracting Inc.Home builder · 768 Middle Country Rd, Saint James(631) 901-7277 · brownandcompanyny.com
Cornerstone MasonryGeneral contractor · 177 Tredwell Ave, Saint James(631) 862-6049 · cornerstonemasonryservices.com · 1 driver, 1 truck
Creative Remodeling, Inc.General contractor · 16 Clinton Ave, St James(631) 317-2239 · creativeremodelingli.com
Falzone & Sons Plumbing & HeatingGeneral contractor · 305 5th St, St James(516) 807-7316 · FALZONEPLUMBING.COM
Inside-Out Kitchens, Baths and MoreGeneral contractor · 367 Lake Ave, St James(631) 584-5312 · insideoutkitchensandbath.com
MacX Projects Corp.Construction company · 367 Lake Ave, Smithtown(631) 291-3456 · macxprojects.com
Morning Star ConstructionGeneral contractor · 37 Hillside Ave, St James(631) 921-9447 · morningstarconstructioncorp.com
P. DeBlasio BuildersGeneral contractor · 273 Lake Ave, St James(631) 584-5500 · pdeblasiobuilders.com
Smithworks LimitedGeneral contractor · 12 Hobson Ave, St James(631) 862-6600 · motorcriticltd.com · 2 drivers, 2 trucks
Straight Line ConstructionGeneral contractor · 12 White Ave, St James(516) 885-4824 · straightlinecustomconstruction.biz
Sundance Swimming PoolsGeneral contractor · 9 Farm Rd, Saint James(631) 862-1900 · sundanceswimmingpools.com
Triple H InsulationGeneral contractor · 90 Arlington Ave, St James(631) 201-0277 · triplehcontracting.com · 5 drivers, 3 trucks
Vazac ContractingGeneral contractor · 333 1st Ave, Smithtown(631) 584-7817 · vazac.com
Arthur B Cohon Construction IncConstruction company · ST James(631) 584-7037 · 1 driver, 2 trucks
Deblasio Capo Design BuildConstruction company · Saint James(631) 584-5503 · 2 drivers, 1 truck
Diamond Construction Solutions CorpConstruction company · Saint James(917) 732-6737 · 1 driver, 1 truck
Ghristmill Construction Company LLCConstruction company · Saint James(631) 366-4036 · 2 drivers, 1 truck
James Sheridan Construction IncConstruction company · ST James(631) 862-7261 · 1 driver, 1 truck
MJW Construction IncorporatedConstruction company · Saint James(516) 369-3335 · 2 drivers, 1 truck
Niemand's Home ImprovementGeneral contractor · 3 Ketcham Ave, St James(631) 584-8019 · 2 drivers, 2 trucks
Rayco Restoration And Construction CorpConstruction company · ST James(631) 862-2228 · 3 drivers, 2 trucks
Sterling ConstructionConstruction company · ST James(631) 862-8578 · 2 drivers, 1 truck
Construction in ZIP 11780 at a glance
Local building angle: Suffolk County permitted 1,399 new homes in 2025, including 287 apartment units. 9% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.