A Federal-style house in Portsmouth’s South End, a shingle-style home on the water in Rye, a place on New Castle with views of the harbor: Seacoast homes are rarely ordinary, and a standard homeowners policy often isn’t built for them. Portsmouth Atlantic Insurance has helped Seacoast families insure their homes since 2005. We work with high-value home carriers including Chubb, Cincinnati, Hanover, Openly, National General and Andover, all of which write in New Hampshire, and with 30+ carriers overall.
We opened in 2005, we’re licensed in 10 states, and we’re the most-reviewed independent insurance agency in New Hampshire, with 1,000+ Google reviews across our two offices and over 2,000 testimonials from the people we insure.
What Makes Seacoast Homes Different to Insure
Three things come up again and again. First, construction. Historic homes downtown and in the South End often have plaster walls, custom millwork, slate roofs and old-growth framing, and rebuilding them with materials of like kind and quality costs far more than a builder-grade estimate suggests. Second, location. Homes along Route 1A in Rye and Hampton, on New Castle, or near Sagamore Creek and Little Harbor face wind, salt air and coastal flooding. Third, contents. Art, antiques, jewelry, wine and family pieces need more than the standard limits inside a homeowners policy.
Replacement Cost, Extended and Guaranteed Replacement
The New Hampshire Insurance Department defines replacement cost as the amount needed to rebuild or repair your home with materials of similar kind and quality without deducting for depreciation. Getting the dwelling limit right is the single most important part of a high-value policy, and many high-value carriers will send someone to appraise the home rather than rely on a quick estimate.
- Extended replacement cost adds a cushion above your dwelling limit if rebuilding costs more than expected.
- Guaranteed replacement cost, offered by some carriers on qualifying homes, pays to rebuild even above the dwelling limit, subject to the policy terms.
- Building code upgrades help with the cost of bringing an older home up to current code during a rebuild.
- Cash settlement options on some high-value policies let you take a settlement instead of rebuilding, which matters if you’d rather buy elsewhere after a total loss.
Which of these you can get depends on the carrier and the home, and that’s where comparing Chubb, Cincinnati, Hanover, Openly, National General and Andover side by side pays off.
Wind, Hurricane Deductibles and Flood on the New Hampshire Seacoast
According to the New Hampshire Insurance Department, most homeowners policies cover damage to the dwelling from high winds. Some coastal policies carry a separate wind or hurricane deductible, often figured as a percentage of the dwelling limit rather than a flat amount. On a high-value home that percentage can be a large number, so we always show you the dollar figure before you choose.
Flood is a separate policy. The Insurance Department is clear that homeowners insurance doesn’t cover flood damage. FEMA’s National Flood Insurance Program generally caps building coverage at $250,000 and contents at $100,000, and FloodSmart explains that a new NFIP policy usually takes effect 30 days after purchase. For larger Seacoast homes, private flood insurance can offer higher limits, replacement cost on contents and broader options. We work with private flood markets such as Neptune Flood, Beyond Floods and Selective Flood. Read more on our flood insurance and Seacoast NH flood insurance pages.
Water Backup and Older Plumbing
The New Hampshire Insurance Department notes that most policies exclude water that backs up through sewers or drains, and that many companies offer it by endorsement. If you have a finished basement, a wine cellar or mechanicals below grade, water backup coverage belongs on your policy. Water shutoff devices and monitored alarms can also help, especially in a home that sits empty part of the winter.
Jewelry, Art, Wine and Collections
Standard homeowners policies put low limits on items like jewelry, watches, furs and silver, especially for theft. Scheduling those items on their own, usually backed by an appraisal, gives them dedicated coverage. We help clients schedule engagement rings, art, antiques, wine and other collections so each piece is listed at the right value.
Umbrella Liability for Seacoast Homeowners
A waterfront home with a dock, a pool, regular guests or household staff carries more liability exposure than most. A personal umbrella adds protection above your home and auto policies. Our umbrella insurance page explains how it works, and our high net worth insurance page covers the full picture for families with several properties.
Second Homes and Seasonal Properties
Plenty of Seacoast families own more than one home: a primary house in Portsmouth and a summer place in Rye, a condo downtown and a lake house up north, or a home in another state. We’re licensed in 10 states, so we can often coordinate both homes and keep the liability on a single umbrella. Seasonal homes raise their own questions about winter freeze, vacancy and how often the house is checked, and we’ll go through them with you.
For more on standard coverage, see our homeowners insurance page, or visit our Portsmouth, NH insurance agency page. Our office is at 601 Islington St, Unit 206, Portsmouth, NH 03801.
Reviewed by Jon Merwin, owner of Portsmouth Atlantic Insurance. Last reviewed October 2026.
For more detail by home value, see our guides to insuring a $2 million, $3 million, $4 million, $5 million and $10 million home in New Hampshire. If you also own luxury or collector cars, our page on high-value auto insurance in New Hampshire explains how we cover them alongside the home.
Talk to Us About Your Seacoast Home
Every household is different, so the best next step is a conversation. Call us at (603) 431-4020, email insure@portsmouthatlanticins.com, or start your high-value home insurance quote online. We’ll compare your options and explain them in plain English.
High-Value Home Insurance FAQs for Portsmouth, NH
What counts as a high-value home?
There isn’t one cutoff. It usually means a home whose rebuilding cost, construction or contents go beyond what a standard homeowners policy is designed for, such as historic or custom homes and waterfront properties on the Seacoast.
What is the difference between extended and guaranteed replacement cost?
Extended replacement cost adds a set cushion above your dwelling limit. Guaranteed replacement cost, offered by some carriers on qualifying homes, pays to rebuild even above the dwelling limit, subject to the policy terms.
Does homeowners insurance cover flooding in Rye, New Castle or Hampton?
No. Homeowners policies exclude flood. You need a separate NFIP or private flood policy, and a new NFIP policy usually takes effect 30 days after purchase.
How much flood coverage can I get?
The NFIP generally caps building coverage at $250,000 and contents at $100,000. Private flood insurance can offer higher limits, which often matters for larger Seacoast homes.
Do I need to schedule my jewelry and art?
Usually, yes. Standard policies have low limits for items like jewelry and watches, especially for theft. Scheduling them, usually with an appraisal, gives each item its own coverage.
Which high-value home carriers do you work with in New Hampshire?
We work with Chubb, Cincinnati, Hanover, Openly, National General and Andover, along with 30+ carriers overall, and compare them for your home.