Buy with fewer surprises
Buying a waterfront or seasonal home in New Hampshire
Waterfront homes in New Hampshire come with two separate state rules to know: the Shoreland Water Quality Protection Act limits what you can build or clear near the water, and a separate law requires a septic evaluation before most developed waterfront homes change hands.
Bean Group editorial team · Published · Updated · About 4 min read
What is protected shoreland?
Under the Shoreland Water Quality Protection Act (RSA 483-B), protected shoreland is the land within 250 feet of the reference line of public waters. That includes lakes, ponds and impoundments larger than 10 acres, larger year-round rivers and streams, designated rivers, and tidal waters.
Within that zone, construction, excavation and filling generally need a permit from NH DES, and tree and vegetation removal near the water is limited. Local zoning applies too. If you plan to clear a view, add a structure or expand, check with NH DES and the town before you make an offer. Browse New Hampshire lake homes to see what’s available.
What septic evaluation does a waterfront sale require?
This is a different law with the same distance. Under RSA 485-A:39, before a developed waterfront property on septic is sold, if any part of the system is within 250 feet of the reference line, the buyer must hire a licensed septic evaluator. A buyer may accept an evaluation the seller had done within 180 days of the sale by acknowledging it in writing.
Systems without state approval, or approved before September 1, 1989, also need a permitted septic designer to assess the system. Build the timing into your inspection period and closing date.
Seasonal camps converted to year-round use are common, and the septic often tells the story. Ask when it was designed and approved, whether its capacity matches the bedrooms you plan to use, and whether the lot can support a replacement system.
What does “waterfront” actually include?
- Ask whether an existing dock is permitted and whether the permit transfers. Docks and shoreline structures are handled by the NH DES Wetlands Bureau.
- Tell deeded frontage apart from a right of way, an association beach or a shared access easement.
- Ask about moorings, which are permitted separately through Marine Patrol and do not automatically come with the home.
- Check winter dock removal and storage, and who pays for it.
Is the home set up for year-round use?
- Is the house insulated and plumbed for year-round living, or drained each fall?
- Is the road maintained and plowed in winter, and by whom?
- How is the house heated when no one is there, and is there freeze monitoring?
- What is the plan for a February pipe problem if you are three hours away? Our winter guide covers more.
What about flood insurance and short-term rentals?
Some waterfront parcels are in mapped flood zones. Look up the address on FEMA’s flood map and get an insurance quote during your inspection period, not after. See home insurance questions to ask.
If you plan to rent the home short-term, check local rules first. Short-term rental rules in New Hampshire are largely set by each town and vary considerably.
Frequently asked questions
How far does protected shoreland extend in New Hampshire?
Protected shoreland is the land within 250 feet of the reference line of public waters covered by the Shoreland Water Quality Protection Act, including lakes and ponds larger than 10 acres, larger rivers, designated rivers and tidal waters.
Does a waterfront home need a septic inspection before sale?
In most cases, yes. If any part of the septic system of a developed waterfront property is within 250 feet of the reference line, the buyer must have a licensed septic evaluation done before the sale, or may accept a seller’s evaluation completed within 180 days.
Does a mooring come with a lakefront home?
Not automatically. Moorings are permitted separately through the NH Marine Patrol, so ask whether a mooring exists, who holds the permit and whether it can be transferred.
Can I rent my New Hampshire lake house short-term?
It depends on the town. Short-term rental rules are largely local and vary considerably, so check the town’s current rules before you make an offer.
These guides are general information from Bean Group, brokered by eXp Realty. They are not legal, tax, financial, insurance or inspection advice. Rules, rates and deadlines change—check current details with the relevant New Hampshire agency or a licensed professional before you act.