Town of Shelter Island

Suffolk County, New York

Last verified September 17, 2026

Town of Shelter Island is a jurisdiction in Suffolk County, New York, with an online portal for searching and pulling active or historical building permits. Use the contact information below to reach the local building department.

Additional Notes

Physical address: 38 North Ferry Road, Shelter Island, NY 11964 (mailing: PO Box 970); hours Mon-Fri 8am-4pm. Online portal is called CitySquared, used for home improvement license/permit applications and card/eCheck payment; the exact CitySquared login/application URL was not separately confirmed beyond the town's Building Department page which links to it. Email listed is for Senior Office Assistant Mary Ellen McGayhey, not a generic department inbox.

What You Need Before Applying for a Permit

Most building departments ask for the same core package before they'll issue a permit: a completed application naming the property owner and contractor, the contractor's state license number and proof of insurance (general liability, and workers' comp if employees are on the job), a notice of commencement or equivalent recorded filing for larger jobs where the state requires one, and scaled plans or a site plan for anything beyond minor repairs. Roofing, fence, pool, and solar permits typically have their own simplified checklists — Town of Shelter Island's department (above) can confirm exactly what applies to your project.

Why this matters for insurance: permit history is one of the first things an underwriter or adjuster checks. Unpermitted work — a finished basement, an added bedroom, a rebuilt roof — can complicate a claim or even void coverage for that portion of the loss, and it routinely surfaces during a home inspection. Pulling the right permit up front, and keeping the closed-permit record on file, protects both the property's value and its insurability at resale.

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