Maine Waterfront FAQs
Be an informed buyer

Waterfront FAQs

What You Will Find Here

Maine’s waterfront real estate market is unlike any other in New England. Whether you’re drawn to the dramatic Atlantic coastline, a quiet lake in the Sebago region, or the singular experience of life on a Casco Bay island, buying waterfront property here involves a layer of complexity that goes well beyond a standard home purchase. Maine’s Shoreland Zoning laws, setback requirements, non-conforming structure rules, and water source considerations all require careful due diligence — and the guidance of an agent who knows this market deeply. The questions below are the ones we hear most often from waterfront buyers. We’ve answered them so you can approach your search as an informed buyer.

Types of Waterfront in Maine

Maine offers extraordinary variety: oceanfront and coastal homes along the Atlantic, lake and pond properties throughout the interior, river-frontage properties, and island properties — most notably in Casco Bay, off the coast of Portland. Each type comes with its own character, regulatory framework, seasonal considerations, and price range.

Casco Bay is the body of water directly east of Portland, dotted with what are called the Calendar Islands — there are said to be 365 of them, one for each day of the year, though the actual count depends on how you define an island. Several are populated year-round: Peaks Island, Great Diamond, Little Diamond, Chebeague, and Long Island all have permanent communities. Life on a Casco Bay island is genuinely unique — you commute by ferry, the pace is different, and the community is tight-knit. It’s one of the most distinctive real estate markets in New England.

Cape Elizabeth is consistently among the most desirable — high-end homes, dramatic ocean views, and proximity to Portland. Falmouth Foreside has beautiful properties on Casco Bay with easy access to the city. Harpswell, further up the peninsula, offers a more rural coastal experience with significant frontage options. For lake properties, the Sebago Lake region — Raymond, Windham, Naples, Casco — is the most popular inland waterfront market.

Regulations & Due Diligence

Yes — Maine’s Shoreland Zoning Act, first enacted in 1971 and regularly updated, establishes minimum standards for development, use, and improvement of properties near water. These apply to all land within 250 feet of the high-water line of qualifying water bodies, including tidal waters, ponds over 10 acres, and rivers draining at least 25 square miles. Local municipalities may adopt stricter standards than the state minimum — so the rules vary by town.

For great ponds and rivers flowing into great ponds, the required setback is 100 feet from the high-water line. For other water bodies, streams, and wetlands, the setback is 75 feet. These setbacks apply to structures, driveways, and parking areas. Existing structures that predate the ordinance may be non-conforming, which has specific implications for what you can and cannot do with them.

A non-conforming structure is one that was built before current shoreland zoning rules took effect and doesn’t meet today’s standards — typically because it sits closer to the water than current rules allow. Non-conforming structures can be maintained and repaired without a permit, but expansion toward the water is generally prohibited. Structures that predate January 1, 1989 may be expanded up to 30% of original floor area and volume, subject to permitting. This is a critical area of due diligence — we always recommend consulting with the local Code Enforcement Officer before purchasing a non-conforming property.

Yes. In shoreland areas, the total area covered by structures, driveways, decks, patios, and other impervious surfaces is limited to 20% of the lot. This is designed to limit runoff into water bodies and is strictly enforced.

Many waterfront properties in Maine rely on drilled wells (called artesian wells locally) rather than municipal water. For any property with a private well, we strongly recommend testing water quality and quantity as part of your inspection. Maine has excellent groundwater in most areas, but testing is non-negotiable. Properties near the water may also have older septic systems — another critical inspection item.

Buying Waterfront Intelligently

Beyond a standard home inspection, budget for well water testing (quality and quantity), septic system inspection, radon testing, and in some cases a wetlands or shoreland zoning review. If there’s a dock or pier, that should be inspected separately. For oceanfront properties, flood zone status and associated insurance costs are important to investigate early.

It is measured frm the normal high water line, or in the case of a wetland, the “upland edge”.  It is NOT the uphill distance.

Waterfront is one of our core specialties — coastal homes, lake properties, and Casco Bay islands are markets we know deeply. Laura has represented buyers and sellers in these markets for over two decades. We know which properties have shoreland zoning issues, which communities have the most buyer demand, and where values are heading. When you’re making a decision of this magnitude, experience in the specific market matters enormously.

The world of reality has its limits; the world of imagination is boundless.

At Maine Home Connection, we channel our unwavering commitment and passion into delivering unparalleled real estate excellence. If you’re contemplating a property purchase in Maine, seize the opportunity to empower your decision with our latest Relocation Guide.

Imagine More!