Massachusetts state license required for nearly any private structure, dock, slip, fill, or use of tidelands and great ponds — the foundational regulatory document for any MA marina.

Who needs it

Marina owners, dock builders, and anyone proposing to expand or modify waterfront structures in MA.

How to get it

File a Chapter 91 application with MassDEP Waterways Program. Most existing marinas already hold a license — verify it is active and in compliance during acquisition due diligence. New or modified licenses require public notice and (often) hearings.

Cost

Application fees from $1,000–$10,000+ depending on scope. Legal and engineering costs typically $25K–$150K for a substantive new filing.

Where to start

MassDEP — Chapter 91 Waterways Program ↗