By Jon Merwin, Founder and CEO, Licensed Insurance Advisor. Updated November 1, 2026.
Insuring a high-value home on Cape Cod comes down to three things: how far the house is from the water, how it is used through the winter, and which carriers will look at it at all. We are an independent agency, so we compare 40+ carriers on your Cape home instead of fitting it to one company’s coastal rules.
Key facts
- About 30% of Barnstable County’s 167,403 housing units are held for seasonal or occasional use, against about 3% statewide (ACS 2024, table B25004).
- The county’s median owner-occupied home value is $692,900, against $607,400 statewide (ACS 2024 one-year).
- About 38% of the Cape’s homes were built in the 1970s and 1980s, and about 10% predate 1940 (B25034).
- Hurricane Bob in 1991 brought gusts of 125 mph to Brewster and North Truro and a 12- to 15-foot surge at the head of Buzzards Bay, including Bourne and Mashpee (National Weather Service).
- The Sagamore and Bourne bridges are the only road links to the mainland, and replacement of the Sagamore is set to start in the winter of 2027–2028 (MassDOT).
Find your part of the Cape
Carriers do not see the Cape as one place. Each draws its own lines by town, by distance to the shore and by which body of water the house faces. Here is how we think about each stretch.
Upper Cape: Bourne, Sandwich, Falmouth and Mashpee
The Upper Cape faces two very different waters. Buzzards Bay funnels hurricane surge toward its head, which is why Bourne and Mashpee saw some of the highest surge in the state during Hurricane Bob, while the Cape Cod Bay shore in Sandwich takes nor’easter waves from the north. Falmouth has both, plus Woods Hole and a long Vineyard Sound shoreline. See our Falmouth home insurance page for that town in detail.
Mid Cape: Barnstable, Yarmouth and Dennis
The Mid Cape holds the year-round centers and many of the Cape’s largest estates, from Osterville, Wianno and Cotuit to Hyannis Port, along the Nantucket Sound side. South-facing shores here are the ones carriers watch for hurricane surge, while the bay side along Route 6A carries older houses, salt marsh and nor’easter exposure.
Lower Cape: Brewster, Harwich, Chatham and Orleans
Chatham and Orleans share Pleasant Bay, which sits behind the Nauset barrier beach, and that beach breaks open and reshapes itself over decades (National Park Service). Homes on the bay, the outer beach and the harbor each read differently to an underwriter. Our Chatham home insurance page goes deeper on that town.
Outer Cape: Eastham, Wellfleet, Truro and Provincetown
On the ocean side, the bluffs of the Outer Cape retreat about 3 feet a year on average over the long run, from about 1.5 feet in North Truro to nearly 3.5 feet at Coast Guard Beach in Eastham (U.S. Geological Survey). A house set well back from a bluff and a house near the edge are not the same risk, and carriers will ask for the distance.
Island homes have their own pages: Nantucket and Edgartown on Martha’s Vineyard.
Five questions every Cape underwriter asks
How close is the water?
Distance to the shore, and whether it is the bay, the Sound or the ocean, often decides which carriers will quote and at what deductible.
Who is there in winter?
A house that sits empty for months needs heat, monitoring and someone checking on it.
What would a rebuild cost?
Contractors, materials and permits on the Cape take longer, and a high-value finish adds up fast.
Is it ever rented?
Short-term rentals change the liability picture and the policy form.
The fifth question is the house’s history: past water or wind claims, the age of the roof, and whether storm shutters, impact-rated windows or roof straps have been added. Bring what you know and we will put it in front of each carrier.
Wind and named-storm deductibles
Most Cape policies carry a separate deductible for wind or named storms. It is set as a percentage of the dwelling limit rather than a flat amount, so on a high-value home a small-looking percentage is a large number. Each carrier sets its own percentage, and its own rule for what triggers it: some use any named storm, others a hurricane warning or wind above a certain speed. The state’s Division of Insurance urges coastal owners to know their deductible before hurricane season.
This is where comparing carriers matters most. Two quotes can look close until you set their wind deductibles side by side on the same dwelling limit. We show you each one in percentage terms and explain how it would apply to your house, so the choice is clear before a storm, not after.
Flood, surge and an eroding shore
No homeowners policy covers flood. Storm surge from a hurricane or nor’easter, and water that comes over a bank or dune, need a separate flood policy. Check your address on the FEMA Map Service Center; many Cape homes sit in coastal A or V zones, and a lender will require flood insurance there.
New federal flood policies through the NFIP go through Selective, usually with a 30-day wait before coverage starts (FloodSmart). NFIP building coverage has a federal cap, so for a high-value home we also look at private flood from Neptune, Beyond Floods, Flow Flood and Aon Edge, which can offer higher building limits and coverage for things the NFIP limits, such as finished lower levels. We quote both and show you the gaps.
Erosion is different again. The slow loss of a bank or bluff is excluded by homeowners and flood policies alike. That makes setback, any permitted coastal structures and the state’s guidance from Massachusetts Coastal Zone Management part of how carriers judge a waterfront lot.
Empty houses and the winter months
About a third of Barnstable County’s homes count as vacant in the census, and nine in ten of those are second homes held for seasonal or occasional use (Census Reporter, Barnstable County). An empty house is where small problems turn into big claims: a frozen pipe or a failed boiler in February can run for days before anyone notices.
- Heat and monitoring. Keep the heat on and add a low-temperature alarm that calls you. Many carriers ask about it.
- Water shutoff. An automatic water shutoff valve or leak sensors are among the most useful things you can add to a seasonal house.
- Someone checking in. A caretaker or property manager visiting on a schedule, with a written log, helps at underwriting and after a claim.
- Vacancy wording. Many policies limit coverage when a house is vacant or unoccupied for a set period. We read that language for you and pick carriers that write seasonal homes.
Rebuild cost across the bridge
For a high-value Cape home, the dwelling limit should reflect what it would cost to rebuild, not what the house would sell for. Land and water views drive a lot of Cape sale values, but a rebuild is about square footage, framing, roof, windows rated for coastal wind, kitchens, baths and systems.
Two Cape-specific things push rebuild cost up. Every truck, crew and load of materials comes over one of two 90-year-old bridges, and the Sagamore replacement will be under construction for years starting in the winter of 2027–2028 (MassDOT). And after a major storm, demand for local contractors spikes all at once. Extended replacement cost, ordinance or law coverage and a realistic loss of use limit all matter more here.
Septic and the nitrogen rules
Most Cape homes are on septic. Since July 7, 2023, the state’s Title 5 rules designate 30 Cape Cod watersheds as nitrogen sensitive areas (310 CMR 15.000). Towns there can take a watershed permit; where they don’t, new systems need nitrogen-reducing technology and existing systems face an upgrade deadline (Mass.gov). For insurance, that means a rebuild after a total loss may require a more advanced septic system than the one you had. Ordinance or law coverage is what helps pay for upgrades a code requires, so we size it with that in mind. A septic system that simply wears out is not covered by any homeowners policy.
Request a Cape Cod home quote
Tell us about the house, how far it is from the water, how it is used through the winter and any other homes or cars, and we will compare the carriers that fit. About 90% of our quotes go out within 24 hours, and we don’t charge any fees.
Carriers we compare for Cape Cod homes
Chubb and Cincinnati both write homes at any dwelling limit, so we quote both. Openly and National General fit homes up to about $5 million, and Safety can write Massachusetts homes up to $3.5 million. On the Cape, treat each of these as a potential option: many require underwriting review for a coastal home, and some come with a higher wind deductible than they would charge inland. We compare 40+ carriers in all, and the right fit depends on the house, its distance to the water, its winter use and its loss history. See how we choose carriers for how we decide.
Rentals, guests, boats and umbrella limits
Cape houses fill up in summer with family, guests and sometimes paying renters. Massachusetts law requires short-term rental operators to carry at least $1 million in liability coverage for the rental, unless the booking platform provides equal or greater coverage (M.G.L. c.175 §4F). Many homeowners policies also limit coverage when a home is rented, so tell us how often you rent before we quote.
Pools, docks, boats on a mooring and teen drivers all add liability, and a second home adds another location. An umbrella policy sits above your home, auto and boat limits, and we line up those limits so it fits cleanly. Jewelry, art and collections usually need to be scheduled separately.
How we quote a Cape Cod home
- The address, distance to the water and flood zone or elevation certificate, if you have one.
- Year built, square footage, construction type, roof age and any storm shutters, impact-rated windows or roof straps.
- How the house is used: year-round, summer only, or rented, and who checks on it in winter.
- Heat source, low-temperature and water leak alarms, an automatic water shutoff and a generator.
- Septic system age and your latest Title 5 inspection.
- Your current declarations pages, plus your primary home, cars and boats, so liability and umbrella limits line up.
We insure second homes alongside a primary home in another state every day. For more on the state picture, see our Massachusetts high-value home insurance page, our coastal Massachusetts high-value home page, our Massachusetts second-home and vacation home guide and our Massachusetts homeowners insurance guide.
Frequently asked questions
Which carriers do you compare for a high-value Cape Cod home?
Chubb and Cincinnati write homes at any dwelling limit, and Openly and National General fit homes up to about $5 million, so they are usually where we start. Safety can write Massachusetts homes up to $3.5 million. On the Cape, every one of them is a potential option rather than a sure thing: many coastal homes need underwriting review, and some come with a higher wind deductible. We compare 40+ carriers in all.
How does a wind or named-storm deductible work on a Cape house?
Most Cape policies have a separate deductible for wind or named storms, set as a percentage of the dwelling limit instead of a flat amount. The percentage, and what triggers it, differs by carrier and by how close the house is to the water. We line up each quote’s deductible next to the others so you can compare them on your house.
Does my homeowners policy cover storm surge or erosion?
No. Storm surge and coastal flooding need a separate flood policy, through the NFIP (new federal policies go through Selective) or a private flood carrier such as Neptune, Beyond Floods, Flow Flood or Aon Edge. Gradual erosion of a bank or bluff is excluded by both homeowners and flood policies, so ask us how each policy treats a house near an eroding edge.
My Cape house sits empty from October to May. What do carriers want?
Most ask who checks the house and how often, whether the heat stays on, and whether there is a low-temperature alarm, water leak sensors or an automatic water shutoff. Some want the water drained if the heat goes off. Tell us how the house is used through the winter so the policy is written for that, not for a year-round home.
Can I rent my Cape home on a short-term rental site?
Yes, but tell us first. Massachusetts law requires short-term rental operators to carry at least $1 million in liability coverage for the rental unless the booking platform provides equal or greater coverage, and many homeowners policies limit coverage when a house is rented. We match the policy, the umbrella and your rental pattern.
What if I'm already on the Massachusetts FAIR Plan?
The FAIR Plan is the state’s market of last resort, and it writes a large share of Cape and Islands homes. Its coverage is more basic than most regular-market policies. If your home is on it, we can review the regular market at each renewal and show you what, if anything, has opened up.
Sources
- Census Reporter, Barnstable County profile (ACS 2024 one-year)
- U.S. Census Bureau, ACS 2024, table B25004, Vacancy Status (via Census Reporter)
- U.S. Census Bureau, ACS 2024, table B25077, Median Value of Owner-Occupied Housing (via Census Reporter)
- U.S. Census Bureau, ACS 2024, table B25034, Year Structure Built (via Census Reporter)
- National Weather Service Boston, Hurricane Bob (1991)
- U.S. Geological Survey, Coastal landforms and processes at the Cape Cod National Seashore (Circular 1417)
- National Park Service, Cape Cod National Seashore Foundation Document (2018)
- MassDOT, Cape Cod Bridges Project advances to procurement for Sagamore Bridge replacement
- MassDEP, 310 CMR 15.000, Septic Systems (Title 5)
- Mass.gov, watershed protection rules for Cape Cod finalized
- Massachusetts Division of Insurance, hurricane preparation reminder
- Massachusetts Division of Insurance, The 2024 Massachusetts Market for Home Insurance
- M.G.L. c.175 §4F, short-term rental insurance
- Massachusetts Coastal Zone Management, Cape Cod and Islands region
- FEMA, Flood Map Service Center
- FloodSmart (NFIP), Buy a policy
About Portsmouth Atlantic Insurance
Portsmouth Atlantic Insurance is a family-owned independent agency founded in Portsmouth in 2005 and licensed in 10 states. We compare 40+ carriers, hold an A+ rating with the Better Business Bureau, and are New Hampshire’s highest-rated agency on Google, with 1,000+ Google reviews and over 2,000 testimonials (see our client feedback). Our team brings 200+ years of combined experience. We don’t charge any fees.
We insure Cape Cod homes from our Portsmouth, NH office by phone at (603) 431-4020, by email at insure@portsmouthatlanticins.com, online and by video.
About the author
Jonathan Merwin is the Founder and CEO of Portsmouth Atlantic Insurance and a Licensed Insurance Advisor. He started the agency in Portsmouth in 2005 and works with owners of larger and older homes on second homes and coastal homes across New England. Read his full bio or see how we choose carriers.