Reviewed by Jon Merwin, Founder and CEO, licensed insurance agent
If you own a home on the New Hampshire Seacoast, two things decide most of your insurance questions: wind and water. A nor’easter can damage a roof and push seawater into the street on the same day, and a homeowners policy treats those two losses very differently. This page explains how coastal homeowners insurance works in Portsmouth, Rye, New Castle, Hampton, North Hampton and Seabrook, and how to put the pieces together.
Portsmouth Atlantic Insurance is a family-owned independent agency founded in 2005, based at 601 Islington Street in Portsmouth. We compare home coverage from 40+ carriers, write flood insurance, and charge no agency fees on personal lines.
What makes a Seacoast home “coastal” to an insurer
Insurers look at distance to the water, elevation, flood zone, roof age and construction, and how the home is protected from wind. The state’s science panel found that the largest storm surges recorded at Fort Point since 2003 came from nor’easters, not hurricanes (NH Coastal Risks and Hazards Commission science panel report (2014)), and Portsmouth’s hazard plan notes that nor’easters can occur in any month (City of Portsmouth Hazard Mitigation Plan Update (2024 draft)). So coastal risk on the Seacoast is a year-round question, not just a hurricane-season one.
Wind: what your homeowners policy covers
Wind damage to your roof, siding and windows is normally covered by a homeowners policy, subject to your deductible. Near the coast, many policies carry a separate wind or named-storm deductible, often a percentage of the dwelling limit rather than a flat dollar amount. On a $600,000 dwelling limit, for example, a 2% deductible means you pay the first $12,000 of a covered wind loss. Check your declarations page for the percentage and what triggers it.
Rain that gets in because the wind first damaged the roof or a window is usually covered. Rain that seeps in without that kind of opening often is not. Keeping the roof in good shape, securing outdoor furniture and having a generator are the simplest ways to cut the risk.
Water: flood is a separate policy
Homeowners policies exclude flood, including storm surge and rising tidal water. Flood coverage comes from the National Flood Insurance Program (NFIP) or a private flood carrier. NFIP building coverage is capped at $250,000 and contents at $100,000 (FloodSmart.gov (NFIP)), and new NFIP policies generally have a 30-day waiting period unless an exception applies, such as a policy bought with a new mortgage (FloodSmart.gov, Buy a policy).
- NFIP: we write National Flood Insurance Program policies through Selective, a Write Your Own carrier. Coverage terms are set by FEMA.
- Private flood: we compare Flow Flood, Neptune Flood, Beyond Floods, The Flood Insurance Agency, CatCoverage and Aon Edge. Some private options offer higher building limits, replacement cost on contents or shorter waiting periods, depending on the property.
- Excess flood: sits above an NFIP policy for homes that would cost more than $250,000 to rebuild.
Look up your address in the FEMA Flood Map Service Center. For details by town, see our Seacoast NH flood insurance page.
Town by town
Portsmouth
Older homes in the South End and along the waterfront bring both flood exposure and rebuild costs for period details. See Portsmouth homeowners insurance and, for larger homes, Portsmouth high-value home insurance.
Rye
Rye regulates FEMA flood Zones A, AE, AO and VE, and homes in Zone VE that are substantially damaged must be rebuilt elevated on pilings or columns (Town of Rye floodplain management ordinance). That can make ordinance or law coverage especially important. See Rye high-value home insurance.
New Castle
New Castle is made up entirely of islands, and Route 1B is the only access and the sole evacuation route (Town of New Castle Master Plan report). Protecting the house before a storm matters because getting to it afterward can take time. See New Castle high-value home insurance.
Hampton, North Hampton and Seabrook
Beach cottages, year-round homes and summer rentals sit close together near the water. Rental use and seasonal vacancy can change which policy fits, so tell us how the home is used. See our Hampton insurance agency page.
Which carriers fit a coastal home
It depends mostly on the home’s rebuild cost (Coverage A) and how close it is to the water:
- Under about $2 million: most of our 40+ carriers are options, including Cincinnati for homes with typically $150,000 or more in dwelling coverage. Coastal appetite varies by carrier and changes over time, so we check current availability for each address.
- About $2-3 million: Hanover, and Andover within its New Hampshire limits (about $1.5 million in protection classes 1-8 and about $1 million in class 9), are among the options, along with Openly and National General up to about $5 million.
- Over about $3 million: Cincinnati is our go-to.
- Above $5 million: Cincinnati and Chubb, which focuses on high-value homes. Both typically inspect inside and out, and water-leak detection is usually required.
For larger homes, see our New Hampshire high-value home insurance hub.
A coastal homeowner’s checklist
- Know your wind or named-storm deductible in dollars.
- Check your flood zone and decide on flood coverage before storm season, allowing for the waiting period.
- Set the dwelling limit from a rebuild estimate, and add ordinance or law coverage.
- Ask how docks, seawalls and boathouses are covered; they are often limited or excluded.
- Add water backup coverage for finished basements.
- Keep an elevation certificate on file if you have one.
- Add a personal umbrella and separate boat insurance if you keep a boat.
Get your quote
Tell us about the house and we will follow up with options. Prefer to talk? Call (603) 431-4020 or use our quote page.
Frequently asked questions
Does homeowners insurance cover storm surge on the Seacoast?
No. Storm surge is flood, which homeowners policies exclude. You need an NFIP or private flood policy.
What is a wind or named-storm deductible?
A separate deductible some coastal policies apply to wind or named-storm damage, often a percentage of the dwelling limit. Check your declarations page for the percentage and trigger.
How long does flood insurance take to start?
New NFIP policies generally take 30 days to start unless an exception applies, such as a policy bought with a new mortgage. Some private flood policies have shorter waiting periods.
Who writes NFIP flood policies at Portsmouth Atlantic?
We write NFIP policies through Selective, a Write Your Own carrier, and also compare private flood from Flow Flood, Neptune Flood, Beyond Floods, The Flood Insurance Agency, CatCoverage and Aon Edge.
Will insurers write a home right on the water?
Often, yes, but appetite varies by carrier and changes over time. Comparing many carriers matters more on the coast than inland.
Do you charge agency fees?
No. We do not charge agency fees on personal lines such as home, auto, flood and umbrella.
Reviewed by Jon Merwin, Founder and CEO
Family-owned since 2005, with 1,000+ Google reviews across our Portsmouth, NH and Stratford, CT offices. Meet our team.