Connecticut Department of Energy & Environmental Protection

DEEP headquarters at 79 Elm Street in Hartford is currently closed due to recent water damage impacting multiple areas of the building. We are working to remediate the situation and get the building back open to staff and the public as soon as possible. While the building is closed, Staff continue to work either remotely or in alternate locations. We continue to be able to receive documents via U.S. Mail or courier service, and our electronic file submittal protocols remain unchanged. For updates, please click here

DEEP Processing Offices for Boating Certificates

DEEP Licensing and Revenue 
79 Elm St., Hartford, CT 06106-5127
860-424-3105
Monday - Friday, 9:00 a.m. - 4:00 p.m.
Directions

DEEP Marine District Headquarters
333 Ferry Rd., Old Lyme, CT 06371
860-434-8638
Monday - Friday, 8:30 a.m. - 4:00 p.m.
Directions

DEEP Western District Headquarters
2065 Thomaston Road, Watertown, CT
860-485-0226
Monday, Thursday, and Friday from 8:30 a.m. - 3:30 p.m.
Get Directions

DEEP Eastern District Headquarters
209 Hebron Rd., Marlborough, CT 06447
860-295-9523
Tuesday, Wednesday, and Thursday from 8:00 a.m. - 4:00 p.m.
Directions

Content updated in March 2024.