Ask a Texas buyer who owns the beach in front of a Maine cottage and you will get a shrug: whoever owns the house, obviously. Ask a Maine title attorney the same question and the answer takes longer, because the honest answer is both more and less than what that buyer expects.

Stand at the tide line of a shingle-style cottage in Camden or Rockport and a local agent will point somewhere past the wet sand, past the seaweed line, out to wherever the water sits at its lowest ebb, and tell you that is where the deed actually stops. In a Celina or Prosper subdivision, the fence marks the edge of what is yours. On the Maine coast, ownership can run so far past the visible beach that finding the true line requires a tide chart. What that same buyer often does not expect is that owning the ground does not mean controlling who walks across it.

The Line Runs Further Than You Would Guess

Maine is one of a small number of states where private ownership of shorefront property extends all the way to the mean low water mark, not the high tide line. In New Hampshire and most other coastal states, private title stops where the high tide reaches, and the state or the public holds the tidal flats below that. Maine works the other way.

The reason traces back to a Massachusetts Bay Colony ordinance from the 1640s. Colonists wanted to build docks and wharves so they could move goods, but doing so required the Crown's permission, and the colonial government had no money to fund public works of that kind. Rather than keep paying for permits nobody could afford, the colony simply handed ownership of the intertidal strip over to the upland landowners, on the theory that people would build their own wharves if they owned the ground beneath them. Maine inherited that rule wholesale when it split from Massachusetts in 1820, and it has stood, more or less intact, ever since.

The practical result for a buyer today: a coastal Maine deed can describe far more square footage than the listing photo suggests, because the boundary follows the tide rather than the shoreline you can see from the porch.

Owning It and Controlling It Are Not the Same Thing

Here is where a Texas buyer's mental model runs into trouble. In 1989, the Maine Supreme Judicial Court took up the question of whether that colonial ordinance still held, in a case called Bell v. Town of Wells. By a narrow 4 to 3 vote, the court confirmed that private landowners do hold title down to the low water mark, but it also confirmed the catch built into the original ordinance: the public retains an easement to fish, fowl, and navigate across that same privately owned strip. The University of Maine's Sea Grant program puts it plainly for waterfront owners: unless the area is posted, clam diggers, shore fishermen, and recreational boaters have a legal right to be on that private tidal ground so long as they are fishing, fowling, or navigating.

That means a homeowner can hold clean title to the flat below their seawall and still have no legal way to keep a clammer off it at low tide. It is not trespass. It is the same bargain the colony struck almost four hundred years ago.

The Ruling That Redrew the Rules for Modern Recreation

What counts as fishing, fowling, or navigation has never been fixed. Maine courts have revisited the scope of that easement repeatedly as recreation and technology changed, sometimes broadening it, sometimes narrowing it. In one case, the courts recognized a right to travel the shore by horse and to drive cattle across it. Once cars replaced horses, that same interpretation was narrowed to exclude motor vehicle travel.

The clearest modern example involves Eastport. A local scuba diver crossed a neighbor's wet sand to reach Passamaquoddy Bay, and the case went to the Maine Supreme Court. The court ruled 6 to 0 that scuba diving counts as a form of navigation, meaning divers in fins and air tanks have the same right to cross that intertidal ground that a boater or clammer does, a ruling that Ballotpedia's summary notes was expected to extend to surfers as well.

The lesson for a buyer is not about scuba divers specifically. It is that the boundary of what you actually control on a waterfront lot is not fixed at closing. It has moved before, based on what activity a court decides fits inside three three-hundred-year-old words, and it can move again.

What This Looks Like on a Real Listing

This shows up in ways more mundane than a court ruling. Some Maine towns have mapped traditional access points where shellfish harvesters have crossed private frontage for generations, and a new owner can expect a visit from someone who has always walked that path to reach the flats, whether or not the new deed mentions it. Deer Isle had only two officially recognized public access points as of 2020, and neighboring Stonington had three, according to reporting from the Island Institute, which covers the working waterfront in detail. In towns with that little formal access, informal custom carries real weight.

There is also a tax angle worth checking before an offer, not after. Maine offers Open Space and Working Waterfront current-use programs that reduce property tax bills for land that supports public recreation or commercial fishing and aquaculture. A parcel enrolled in either program, or a neighboring one, signals that working-waterfront activity is expected nearby, which matters for anyone picturing a quiet private beach.

Why the Median Price Swings So Much

This legal layering helps explain something that looks confusing on paper: how much Midcoast waterfront prices seem to move from one report to the next. Rolling three-month sales data covering May through July 2026 showed Knox County with 132 homes sold, up just over 9 percent year over year, at a median price of $441,500. Lincoln County saw 134 sales in the same window, essentially flat compared to the prior year, with a median of $480,000. Waldo County posted 131 sales, up more than 8 percent, at a median of $369,000. Reporting on that period specifically flagged that desirable waterfront properties in towns like Camden, Rockport, Belfast, and Lincolnville were still commanding a premium even as overall inventory loosened.

Earlier in the year, a separate rolling-quarter comparison told a different story for the same two counties: Knox County down nearly 16 percent and Lincoln County down more than 8 percent. Neither number is wrong. Both are true measurements of small, thin markets where a handful of transactions swing the median hard in either direction, and where the underlying asset being measured is not uniform. A true tidal-frontage lot with clean title to the flat, no active harvester conflicts, and no working-waterfront designation nearby is a different product than a house across the street with a water view and no title below the high tide line, even if both get called waterfront in casual conversation. Part of what makes the median so volatile is that these two products keep getting mixed into the same county-level number.

What to Ask Before You Fall for the Photo

A buyer weighing a Maine cottage against a lot in Frisco or McKinney is used to a fence line settling the question of what they own. On the coast, the questions worth asking are different:

• What does the deed itself say about the seaward boundary, not just the plat sketch? Some older Maine deeds rely on historic grant language that courts have said must be proven with actual title records rather than assumed.
• Is the flat in front of the property mapped by the town or the Department of Marine Resources as an approved or conditionally approved shellfish area, which signals how likely harvesters are to be present at low tide.
• Is any part of the parcel, or a neighboring one, enrolled in the Open Space or Working Waterfront current-use tax program.
• How does a insurer treat a structure sitting next to publicly accessible tidal land when quoting flood or liability coverage.
• Has the seller had any history of accommodation or friction with clammers, worm diggers, or aquaculture leaseholders working nearby.

None of these questions have a wrong answer. A property with active shellfish traffic or a working-waterfront designation can still be a wonderful place to own. The point is knowing which questions to ask before the offer goes in, not after the closing.

The Trade Worth Understanding

The colonial bargain that shaped this rule was never about privacy. It was about getting docks built with no public money. Nearly four hundred years later, that same trade still defines what a coastal Maine buyer gets: title that runs further than almost anywhere else in the country, paired with a public right that runs right alongside it. For a Texas buyer used to a fence settling the matter, that split ownership is the single fact most worth understanding before falling for a listing photo.

A Few Quick Questions

Does this apply to every property on the Maine coast? No. It applies specifically to land with tidal frontage, where the deed's boundary runs to the low water mark. Upland lots without direct shore access are not affected the same way, though nearby working-waterfront activity can still shape the experience of owning nearby.

Can an owner fence off the tidal flat to keep the public out? No. The statute does not allow an owner to exclude fishing, fowling, or navigation on the flat itself, regardless of fencing or posting. An owner can restrict access across the upland portion of the property used to reach the flat, but not use of the flat once someone is lawfully there.

Is this legal setup unique to Maine? Largely, yes. New Hampshire and most other coastal states set the ownership boundary at the high water mark instead, which is part of why this catches buyers coming from other states off guard.

Comparing a Coastal Maine listing to a suburban Texas lot means comparing two entirely different ideas of what a property line does. Allison Keegan works both markets and can walk through exactly what a specific deed, tax designation, or shoreline history means before you write an offer. Reach out today to talk through what a specific property actually includes.