What the Seacoast Is
New Hampshire has the shortest ocean coastline of any coastal state, about 18 miles. The Seacoast region reaches well beyond the beaches, though, wrapping around the Great Bay estuary and up the tidal rivers that feed the Piscataqua, which forms the border with Maine.
Two counties share it. Rockingham County holds the coast itself: Portsmouth, Rye, Hampton, Exeter and Newmarket. Strafford County holds Dover, the county seat, on the Cochecho and Bellamy rivers, and Durham, home of the University of New Hampshire, beside Great Bay at the mouth of the Oyster River.
Our Coverage, Plainly
New England Host Co's New Hampshire service area is six counties: Belknap, Carroll, Grafton, Hillsborough, Merrimack and Strafford. On the Seacoast that means:
- We cover: Dover and Durham (Strafford County), subject to our rule that every home is within 45 minutes of its crew's base.
- Outside our New Hampshire counties: Portsmouth, Exeter, Hampton and Rye (Rockingham County). Newmarket is in Rockingham County too; we look at homes near the Durham line case by case.
If your home is in Portsmouth or on the beach, call us anyway at (978) 672-4578. We will tell you honestly whether we can help, and if we cannot, you will at least know where you stand. The town cards below include Rockingham towns for reference.
Character and Demand on the Strafford Side
The Strafford County Seacoast is not a beach market. Its demand comes from the university, hospitals, employers and the region's food and arts scene:
- Dover is the oldest permanent settlement in New Hampshire, founded in 1623, with an Amtrak Downeaster station, Wentworth-Douglass Hospital, the Children's Museum of New Hampshire and a busy summer and fall festival calendar.
- Durham revolves around UNH: move-in, parents' visits, football at 11,015-seat Wildcat Stadium, hockey and May commencement ceremonies at the Whittemore Center, plus its own Downeaster stop at Durham-UNH station.
Both are a short drive from Portsmouth and the beaches, which guests appreciate, and both work well for furnished monthly stays for visiting faculty, clinicians and relocating staff; see mid-term rentals in New England.
Seasons
Summer adds visitors headed for the coast and Dover's outdoor Cochecho Arts Festival series. Fall is busy on the university calendar, with move-in, football weekends and foliage. Winter is quieter, carried by hockey, business travel and longer stays, and spring builds toward UNH commencement in May. Snow rules are strict in Durham, where overnight street parking is banned all winter.
The Rules Landscape
Seacoast towns write their own rules, and they differ sharply, as of October 2026:
- Durham regulates short-term rentals by name as an accessory use to an owner-occupied single-family home, with no more than three sleeping rooms, a permit from the Zoning Administrator, and the owner or family on the premises overnight while guests stay. Whole-home rentals by an absent owner do not fit the definition.
- Dover's zoning ordinance does not define short-term rental. It defines a bed-and-breakfast as a residential structure with nine or fewer bedrooms rented on a temporary, short-term basis; ask the Planning Department how your plan would be classified.
- Portsmouth is where the NH Supreme Court ruled in 2019 that nightly rentals were a transient use, not a permitted residential use, a case that still shapes how New Hampshire towns read their codes. Read more in New Hampshire short-term rental laws.
Every operator also needs a New Hampshire Meals and Rooms license; see the New Hampshire rooms tax page.
How New England Host Co Works on the Seacoast
For Dover and Durham homes, we offer one full-service package (listing creation, photography, daily PriceLabs pricing, guest messaging, housekeeping and an inspection after every stay) or co-hosting instead. Tell us the address so we can confirm the 45-minute crew rule. See full-service management, the New Hampshire overview, or contact us.
FAQ
Does New England Host Co Manage Rentals in Portsmouth or Hampton?
Portsmouth, Exeter, Hampton and Rye are in Rockingham County, outside our New Hampshire counties. Call (978) 672-4578 anyway and we will tell you plainly whether we can help.
Can I rent my whole Durham house on Airbnb while I live elsewhere?
Durham's ordinance defines a short-term rental as an accessory use to an owner-occupied home, with the owner or family on the premises overnight, so an absentee whole-home rental does not fit it.
Is Newmarket Covered?
Newmarket is in Rockingham County. We look at homes near the Durham line case by case; send us the address.
Sources
- Geology of New Hampshire (Wikipedia), coastline length
- Dover, New Hampshire (Wikipedia)
- Durham, New Hampshire (Wikipedia)
- Town of Durham, Zoning Ordinance April 20, 2026
- Town of Durham, Winter Parking Ban
- Dover Zoning Ordinance, Chapter 170 definitions (Zoneomics)
- Wildcat Stadium (Wikipedia)
- NH Bar Association, Short-Term Rentals: A Long-Term Legal Debate