Seabrook, NH Home Insurance: Seabrook Beach, the Estuary and Coastal Homes

By Jon Merwin, Founder and CEO

Home · Flood · Manufactured homes · Auto · Umbrella · New Hampshire

Portsmouth Atlantic Insurance is an independent agency founded in 2005 and licensed in 10 states, based in Portsmouth. We insure homes all along the Seacoast, and we shop each Seabrook home across 40+ carriers. We are the most-reviewed independent insurance agency in New Hampshire, with 1,000+ Google reviews and over 2,000 testimonials across our two offices. Start with New Hampshire homeowners insurance, or read on for what matters in Seabrook.

Seabrook at a glance

The town’s draft 2025 Hazard Mitigation Plan update describes Seabrook as about 5,978 acres in the southeast corner of New Hampshire on the Atlantic, with 318 acres of open water including the Hampton-Seabrook Estuary. It puts the 2023 year-round population at 8,413. The town is relatively flat: 95% of the land is under 60 feet above sea level, and the highest point, Grape Hill, is 220 feet. Most of the town drains to the Blackwater River and Hampton Harbor. From 2018 to 2024, the plan says, the town issued permits for 67 single-family homes, 17 multi-family homes and 74 mobile homes.

Where you live in Seabrook changes the policy

• Seabrook Beach. The town’s Coastal Hazards and Adaptation master plan chapter lists Seabrook Beach from Campton Street south to Dracut Street among the local roads affected by sea-level rise scenarios, and says the 1% annual chance storm surge reaches elevation 14 to 18 feet in the VE zone along the immediate coast. It notes that sand dunes are maintained to reduce flood and storm damage, and that height restrictions can keep owners from elevating existing structures and utilities above the base flood elevation.
• The estuary side, west of Route 1A. The same chapter says local roads affected by flooding are mainly west of Route 1A in low-lying areas next to the Hampton-Seabrook Estuary, including Walton Road, Centennial Avenue, Cross Beach Road and River Street, with surge elevations of 8 to 10 feet in the AE zone along the estuary shoreline.
• Route 1A and Route 286. The chapter calls these state roads highly susceptible to flooding in all six sea-level rise and storm surge scenarios it studied. The hazard plan says the January 2024 winter storm closed Route 286 completely, cutting off access for school buses and residents.
• Inland, along Cains Brook. The hazard plan lists recurring or potential flooding at Route 1 at Cains Brook, South Main Street west of the wastewater treatment plant, Folly Mill Road Extension, Walton Road at the railroad abutments and Zagarella Drive. It notes there are no high hazard potential dams in Seabrook.
• Manufactured homes. The plan lists several manufactured housing parks among the facilities to protect. Manufactured homes need a policy written for them; see mobile and manufactured home insurance.

Flood coverage in Seabrook

The plan reports 59 NFIP policies in force as of June 2024, $10,868,000 of coverage, and 50 paid losses totaling $287,348 since 1978, with five repetitive loss buildings. Fifty of the policies are in Flood Zone A and nine in Zone X. Seabrook’s current flood map and study are dated January 29, 2021. Lenders require flood insurance for federally backed mortgages in a special flood hazard area, but storms such as the June 2021 thunderstorm and the July 2023 rains also flooded roads and yards. Check your address on the FEMA Flood Map Service Center.

• NFIP through Selective. We write National Flood Insurance Program policies through Selective, a Write Your Own carrier. The NFIP covers up to $250,000 for the building and $100,000 for contents. New policies generally have a 30-day waiting period (see FloodSmart), so buy before storm season, not during it.
• Private flood. When a home costs more than the NFIP building limit to rebuild, or you want coverage the NFIP leaves out, we compare Flow Flood, Neptune Flood, Beyond Floods, The Flood Insurance Agency, CatCoverage and Aon Edge. Each one decides address by address.
• Elevation certificates. If you have one, send it. If the house has been raised or has flood vents, it can make a real difference in how flood carriers rate it.

See flood insurance in New Hampshire for more. Water backup (sewer, drain or sump pump failure) is an add-on to homeowners; flood is separate. If your basement is finished, ask about both. See basement flooding coverage and our flood insurance overview.

Wind and coastal storms

Beachfront homes take the brunt of nor’easters. Wind damage is generally a homeowners claim; storm surge is flood. Some carriers apply separate wind or named storm deductibles near the coast, so we show you each deductible in dollars before you choose. See coastal home insurance in New Hampshire.

Winter, trees and wind in Seabrook

New Hampshire winters bring ice dams, frozen pipes and heavy snow loads, and storms bring down trees and limbs. These are generally homeowners claims, subject to your deductible and policy terms. A properly sized wind and all-perils deductible, and a roof in good shape, do more for most homeowners than any single add-on. Water damage from a burst pipe is usually covered when the home is heated and occupied; long vacancies can change that, so tell us if the house will sit empty.

Larger homes

Under about $2 million, most of our 40+ carriers are in play. In New Hampshire, Andover generally writes up to about $1.5 million, or closer to $1 million for homes far from a hydrant or fire station. Around $2 million to $3 million, Hanover is often a fit; above $3 million, Cincinnati; and at $5 million and up, Chubb. Each carrier underwrites the specific house, so these are starting points, not promises.

Seasonal homes and rentals

Beach cottages used part of the year raise vacancy and winterization questions; see seasonal home insurance. If you rent a home out, you need a dwelling or landlord policy, and we don’t charge fees on those either.

Renters and tenants in Seabrook

If you rent in Seabrook, your landlord’s policy covers the building, not your belongings or your liability. A renters policy covers both, plus extra living costs after a covered loss. We shop renters coverage across our carriers, and Progressive Home is one of them; we use Progressive Home for renters policies only. Landlords who own two- to four-family buildings can see landlord insurance.

Auto, umbrella and the rest of the household

Most Seabrook households also need auto insurance, and many add a personal umbrella. We quote them with the home so the liability limits line up, and we put rentals, second homes, boats and valuables under the same review. One agent, one renewal conversation.

Common coverage gaps we see in Seabrook

• A dwelling limit based on the purchase price or assessed value instead of the cost to rebuild
• No water backup coverage on a house with a finished basement
• Personal property limits that have not kept up with what the household actually owns
• Liability limits on the home and auto that do not line up with an umbrella, or no umbrella at all
• No ordinance or law coverage on an older home that would need code upgrades after a loss
• No flood policy on a home at Seabrook Beach or west of Route 1A near the estuary
• A manufactured home insured on the wrong policy form

Most of these are straightforward to fix once someone reads the declarations pages side by side, and that is the first thing we do in a review.

Before storm season in Seabrook

• Know your hurricane or named storm deductible in dollars, not just as a percentage
• Photograph or video each room so a contents claim is easier to document
• Keep your declarations pages, flood policy and any elevation certificate somewhere you can reach from your phone
• If you are thinking about flood coverage, buy it well ahead of a storm because of the waiting period
• Plan another route for when Route 286 or Route 1A closes in a storm

Buying a home in Seabrook

Start the insurance conversation before you are under contract, not the week of closing. Send us the listing and the inspection report when you have it. The report answers most of what carriers ask: roof age, electrical panel, heating, plumbing and any water in the basement. Near the beach or the estuary, ask for any elevation certificate and the seller’s flood policy, which can sometimes be assigned to a buyer. We line up the homeowners binder, and a flood binder if you need one, so both are ready for your lender.

How a Seabrook home quote works

• Tell us about the house: address, year built, square footage, roof age and updates to wiring, plumbing and heating.
• Send your current declarations page so we can compare like for like and point out limits that look short.
• We shop the carriers that fit and lay the options out side by side, with the differences in coverage, deductibles and storm terms, not just price.
• You choose, and we handle the switch, including your mortgage company and the effective date, so there is no gap.

Serving Seabrook from Portsmouth

Our office is at 601 Islington St, Unit 206, Portsmouth, NH 03801, and we also work by phone, email and online. Call (603) 431-4020. Nearby, see our South Hampton, Hampton, Exeter, Kensington and Salisbury, MA pages.

Sources

• Town of Seabrook, Hazard Mitigation Plan Update 2025 (draft)
• Town of Seabrook Master Plan 2016, Chapter 9: Coastal Hazards and Adaptation
• FEMA Flood Map Service Center
• FloodSmart, buying a flood policy

Get a quote

Tell us about the property and we will compare carriers and follow up with options. Prefer to talk? Call (603) 431-4020.

Frequently asked questions

Do you insure homes in Seabrook, NH?

Yes. We insure Seabrook homes from our Portsmouth office at 601 Islington St, and by phone, email and online. Call (603) 431-4020.

Which parts of Seabrook flood?

The town’s plans point to Seabrook Beach, low-lying streets west of Route 1A next to the Hampton-Seabrook Estuary, Route 1A and Route 286, and inland spots such as Route 1 at Cains Brook. Check your address on the FEMA Flood Map Service Center.

Does homeowners insurance cover a flooded basement?

Not from flood. Water backup from sewers, drains or a sump pump is an add-on, and rising or surface water needs a flood policy.

Who writes your NFIP flood policies?

We write NFIP policies through Selective, and we compare private flood from Flow Flood, Neptune Flood, Beyond Floods, The Flood Insurance Agency, CatCoverage and Aon Edge.

Do you charge fees?

No. We don’t charge fees on any policy we write, including homeowners, condo, renters, landlord, dwelling and auto.