Buying Waterfront Property in Massachusetts

Waterfront property in Massachusetts is governed by more overlapping regulation than any other residential category, and the ongoing costs are structurally higher. Buyers who understand this before making an offer do well. Buyers who discover it at the inspection stage generally do not.

Wetlands jurisdiction comes first

The Massachusetts Wetlands Protection Act regulates work not only in wetlands and water bodies but in a buffer zone extending inland from them, and in land subject to flooding. Many communities also have their own wetlands bylaw that is stricter than the state act.

Practically, that means the local Conservation Commission has jurisdiction over a great deal of what a waterfront owner might want to do — an addition, a deck, a shed, a new septic system, tree removal, sometimes landscaping. Approval is a formal process with filings, hearings and abutter notice, and it takes months.

Do not buy waterfront intending to build or extend without talking to the Conservation Commission first. The conversation is free and it is the single highest-value hour of diligence available on these properties.

Flood zone and flood insurance

Check the address on the FEMA Flood Map Service Center and find the flood zone and the base flood elevation. Then get an elevation certificate if one exists, or price obtaining one.

The certificate matters because flood insurance premiums depend heavily on the lowest floor elevation relative to the base flood elevation. Two houses on the same street can have materially different premiums for that reason alone. Get an actual quote, not an estimate, during the inspection period.

Understand also that flood maps are revised, and a revision can move a property into a zone where coverage becomes required by the lender.

The wind deductible

Coastal policies commonly carry a separate hurricane or named-storm deductible expressed as a percentage of the dwelling limit rather than a flat sum. On a substantial coastal home that can run to tens of thousands of dollars before the policy pays anything for storm damage.

Some coastal properties cannot get standard-market coverage at all and fall to the Massachusetts FAIR Plan. Confirm insurability early; it can determine whether the property is financeable.

Chapter 91 and what you actually own

Massachusetts has one of the oldest public trust doctrines in the country. Under it, the public retains rights in tidelands, and structures in or over tidelands — docks, piers, seawalls, boathouses — generally require a Chapter 91 licence from the Department of Environmental Protection.

Ask specifically: is the existing dock licensed? Is the seawall? An unlicensed structure is the buyer's problem after closing, and licensing after the fact is slow and uncertain.

On coastal property, understand where private ownership ends. Massachusetts is unusual in extending private ownership to the low water mark in many locations, subject to public rights of fishing, fowling and navigation. What that means for beach access on a specific parcel is a title question for your attorney, not a general one.

Lake and river frontage

Different rules, same principle. Riparian rights, water levels controlled by a dam or an association, restrictions on docks and motorised craft, and — commonly — a lake association with its own rules and fees. Ask what the association controls and what it charges.

Also ask about water quality history, including any record of cyanobacteria closures, which affect both use and value.

Septic on waterfront

Most waterfront property outside the denser communities is on septic, and Title 5 sets minimum setbacks from wetlands, water bodies and the groundwater table. On a small waterfront lot those setbacks can make a replacement system difficult or impossible to site conventionally, pushing you toward an engineered alternative system with higher cost and ongoing monitoring.

If the existing system is old, price a replacement before you commit — not the standard cost, the cost on that lot.

The maintenance reality

Salt air is corrosive. On coastal property, expect shorter lifespans and more frequent attention for exterior paint and stain, roofing, window and door hardware, HVAC condensers, decking and railings, and any exposed metal. Budget above what an inland house of the same size would need.

Erosion and shoreline stability are the longer-term question. Ask what has changed in twenty years, and what any seawall or revetment has cost to maintain.

Diligence checklist

1.Conservation Commission — jurisdiction, and what is possible.
2.Flood zone, base flood elevation, elevation certificate, actual insurance quote.
3.Wind deductible and standard-market insurability.
4.Chapter 91 licensing for every structure in or over the water.
5.Septic capacity and replacement feasibility on the actual lot.
6.Title review of water rights, access rights and any recorded restrictions.
7.Association rules and fees, if any.
8.Erosion history and shoreline structures.