Find a licensed insulation contractor in Shelter Island, NY

Who licenses insulation contractors in Shelter Island

• Suffolk Consumer Affairs counts insulation as home improvement work, and contractors working without a license there are subject to arrest and prosecution.
• Home Energy Audit Certificates are a separate license type issued through Suffolk Consumer Affairs.
• Shelter Island requires home improvements to be performed by a licensed contractor holding a Shelter Island license.
• Shelter Island's notice to contractors says every contractor or subcontractor working on the island, landscapers included, needs a town license.
• Shelter Island takes home improvement license applications online, and a new license needs a $250 check to the town, a liability certificate naming the town as certificate holder and, if applicable, a workers' compensation certificate.

State rules and the lookup steps: how to check an insulation contractor's license.

What the Town of Shelter Island requires

• Shelter Island's Building Department notes that the new 2025 New York State Energy Code took effect on December 31, 2025.

The Town of Shelter Island Building Department handles permits (631-749-0772). Our Town of Shelter Island permit guide covers how to apply, inspections and certificates.

Homes in Shelter Island: what the Census shows

Across the Town of Shelter Island, villages included, the median home was built in 1980, and 28% of homes were built before 1960, 23% before 1940. 95% of homes here are owner-occupied, and 96% are single-family detached houses.

What insulation work costs here

Labor is a large part of any price. Long Island insulation workers, floor, ceiling and wall earn a median $63,862 a year, from about $51,649 at entry level to $91,054 with experience. (New York State Department of Labor, wages updated to the first quarter of 2026.) Prices come from written estimates; more in the insulation cost guide.

Before you hire in Shelter Island

• Ask for the license number the work needs here (see who licenses insulation contractors above), and check it before you sign.
• Ask who files with the Town of Shelter Island Building Department, and who books the inspections.
• Will you air seal before you insulate, and how will you test the result?
• What material and how much, and how does that compare with the code for this part of the house?