City of Mount Vernon

Westchester County, New York

Last verified September 17, 2026

City of Mount Vernon is a jurisdiction in Westchester 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, or the mailing address if the jurisdiction needs to be listed as a certificate holder on a contractor's insurance documentation.

Contact

Phone: 914-665-2483
Email: dob@cmvny.com
Department Site: Department of Buildings (opens in a new tab)

Source: mountvernonny.gov (opens in a new tab)

Permit Search

Mount Vernon Online Permit Portal (OpenGov) (opens in a new tab)

Certificate Holder Mailing Address

Patrick G. Holder, R.A., Commissioner of Buildings
Mount Vernon City Hall, Dept. of Buildings, Rm 210
1 Roosevelt Square
Mount Vernon, NY 10550

Use this address when the jurisdiction needs to be listed as a certificate holder on a contractor's insurance documentation.

Additional Notes

Also see the general Permits/Fees page at https://www.mountvernonny.gov/421/Permits. An older search result listed a DPW number (914-665-2300); the Department of Buildings' own contact page gives 914-665-2483, used here.

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 — City of Mount Vernon'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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