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Suffolk County, New York

General contracting in Suffolk County, New York

Illustration for General contracting
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Browse 608 verified general contracting registered across Suffolk County, New York (including Huntington, Islip, Babylon, Smithtown, Brookhaven, Riverhead). Every record is compiled from New York City Department of Buildings & NYS Licensing Authorities (NYC DOB / NYS) public credential files under NYC Administrative Code Title 28 (Licensed Master Plumber, Master Electrician, and General Contractor Registration) & NYS General Business Law Article 36-A.

Official State Authority: New York City Department of Buildings & NYS Licensing Authorities (NYC DOB / NYS) Official Registry · County Seat: Riverhead

Municipalities in Suffolk County (33)

Select a city or town in Suffolk County to view local permit guidance and registered general contracting records:

Dix Hills 50Deer Park 46West Babylon 46Ronkonkoma 41Bay Shore 39Huntington Station 38Lindenhurst 36Melville 35Brentwood 30Huntington 30Holbrook 24Smithtown 20Hauppauge 15West Islip 15Commack 14Central Islip 11Patchogue 9Babylon 7Hampton Bays 7Southampton 7Yaphank 7Islip 6Northport 6Southold 6East Hampton 5Manorville 5Shirley 5Stony Brook 4East Quogue 3Mastic Beach 3Quogue 3Riverhead 3Westhampton Beach 3

608 general contracting records · Suffolk County, NY

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Public Directory Quality: Official NYC DOB / NYS license records across Suffolk County · Zero sponsored order · Never sold as a lead · How our data works →

General contracting directory — Suffolk County

608 matching records across 33 open municipalities · 25 on this page · Contactable records first, then alphabetical.

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Map unavailable: no publishable postal or city location for these records.

Adv NY Inc

Official license file Contactable General contracting · NYC Department of Consumer and Worker Protection

Registered address: 4250 Vets Mem Hwy

2079160-DCA · Source dated 2026-10-25 · Service area not confirmed. · Verify on New York portal →

+1 more registration for this business
  • 619761 · 4250 Veterans Memorial Hwy
Call (631) 831-9316
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Other Counties in New York

New York County (Manhattan)Kings County (Brooklyn)Queens CountyBronx CountyRichmond County (Staten Island)Westchester CountyNassau CountyAlbany CountyErie CountyMonroe CountyOnondaga CountyRockland CountyOrange CountyDutchess County

Before the first call

  • Describe the job and ask whether it is within their scope and service area.
  • Check the credential with its issuing authority and ask what applies where the work will happen.
  • Ask about insurance, availability, who will do the work, and a written scope.
  • Ask about callout fees, labor or fixed rates, materials, cancellation and any estimate charge.
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Verification Overview & Key Takeaways: How to Check Official Credentials

HomeCrafto displays source records with different scopes, including licenses, registrations, municipal permits and community records. A source entry is not proof of qualification for your job. Before signing a work order or paying a deposit, homeowners should confirm that the contractor’s credential number is active, verify that the license classification covers the specific trade scope required for the job, and request a current Certificate of Insurance (COI) directly from the issuing insurance carrier. Independent verification protects your property and ensures compliance with local building codes.

How do you verify a contractor license number and insurance on official portals (FAQ)?

You can verify active license standing and consumer protection rules directly through official government portals, including Washington L&I Contractor Verify, the California Contractors State License Board (CSLB), the Connecticut eLicense Portal, USA.gov State Consumer Protection Offices, and FTC Home Improvement Consumer Guidance. Always confirm municipal permit requirements with your local building department before work begins.