Top 5 Most Common Summer Claims for Cape Cod & Islands Homeowners

Summer on Cape Cod, Nantucket, and Martha’s Vineyard is what many homeowners wait for all year. The house fills with family and friends, boats and kayaks come out of storage, outdoor showers are running nonstop, and weekends revolve around the beach, backyard dinners, and time on the water.

But summer also changes the risk around your home.


More guests, more water usage, more outdoor activity, sudden thunderstorms, seasonal homes sitting unattended between visits, and expensive recreational equipment can all create losses homeowners don't necessarily see coming.


And on the Cape and Islands, some of the most expensive summer claims aren't always the obvious ones.


Here are five summer insurance claims Cape Cod and Island homeowners should have on their radar:

1. Water Backup After Heavy Summer Rain


A fast-moving summer thunderstorm can dump a surprising amount of rain in a short period of time. When drainage systems become overwhelmed, water can back up through a sewer, drain, or sump system and damage finished basements, utilities, furniture, and personal belongings.


Here's the part homeowners don't always realize: water backup isn't the same thing as flood damage, and coverage for sewer or drain backup may need to be specifically added to your homeowners policy.


Example Claim:

A homeowner in Falmouth finishes their lower level with a family room and home gym. After several inches of rain fall during a summer storm, water backs up through a basement drain, damaging the flooring, drywall, furniture, and exercise equipment.


Coverage That May Help:

Water Backup Coverage may help cover damage caused by water backing up through a sewer, drain, or sump system, depending on the cause of loss and your specific policy.


How to Reduce Your Risk:

  • Have sump pumps and drainage systems inspected regularly
  • Consider installing a battery backup for your sump pump
  • Keep gutters and exterior drainage areas clear
  • Review your Water Backup Coverage limit—especially if you have a finished basement
Beachside house with pool, green lawn, and blue sky

1. Water Backup After Heavy Summer Rain


A fast-moving summer thunderstorm can dump a surprising amount of rain in a short period of time. When drainage systems become overwhelmed, water can back up through a sewer, drain, or sump system and damage finished basements, utilities, furniture, and personal belongings.


Here's the part homeowners don't always realize: water backup isn't the same thing as flood damage, and coverage for sewer or drain backup may need to be specifically added to your homeowners policy.


Example Claim:

A homeowner in Falmouth finishes their lower level with a family room and home gym. After several inches of rain fall during a summer storm, water backs up through a basement drain, damaging the flooring, drywall, furniture, and exercise equipment.

Beachside house with pool, green lawn, and blue sky

Coverage That May Help:

Water Backup Coverage may help cover damage caused by water backing up through a sewer, drain, or sump system, depending on the cause of loss and your specific policy.


How to Reduce Your Risk:

  • Have sump pumps and drainage systems inspected regularly
  • Consider installing a battery backup for your sump pump
  • Keep gutters and exterior drainage areas clear
  • Review your Water Backup Coverage limit—especially if you have a finished basement

2. Lightning Strikes & Power Surges Damage Expensive Home Systems


Cape Cod and the Islands see their share of fast-moving summer thunderstorms, and lightning doesn't have to directly strike your house to cause expensive damage.


A nearby strike or electrical surge can damage TVs, computers, appliances, HVAC equipment, smart-home technology, pool equipment, generators, well pumps, and other electrical systems.


Today's homes contain significantly more technology than they did years ago, which means one surge can affect multiple expensive systems at once.


Example Claim:

A thunderstorm rolls through Barnstable while a family is away for the weekend. A power surge damages the home's central air conditioning system, several appliances, Wi-Fi equipment, and electronics. They return to a very warm—and unexpectedly expensive—surprise.


Coverage That May Help:

Depending on the cause of loss and policy, homeowners insurance may cover certain sudden electrical or lightning-related damage. Equipment Breakdown Coverage can also provide additional protection for certain mechanical and electrical failures that a standard homeowners policy may not cover.


How to Reduce Your Risk:

  • Install whole-home surge protection
  • Use surge protectors for valuable electronics
  • Have aging electrical systems inspected
  • Ask your agent whether Equipment Breakdown Coverage makes sense for your home


3. Guest Injuries Around Docks, Decks, Outdoor Showers & Backyard Amenities


Summer entertaining creates a completely different liability exposure than your home may have during the rest of the year.

Think beyond the swimming pool.


Wet outdoor shower steps, weathered decks, private docks, fire pits, trampolines, kayaks, paddleboards, and even bicycles guests use to ride into town can create opportunities for serious injuries.


Salt air and coastal weather can also accelerate deterioration of wood, railings, stairs, and other exterior structures, making routine maintenance especially important for Cape and Island homes.


Example Claim:

Friends are staying at a waterfront home on Martha's Vineyard for the weekend. While walking down to the dock in the evening, a guest leans against a deteriorated railing that gives way, causing them to fall and suffer a serious injury.


Coverage That May Help:

Personal Liability Coverage under a homeowners policy may help with certain bodily injury claims if you're found legally responsible. For homeowners with significant assets or higher-risk amenities, a Personal Umbrella Policy can provide an additional layer of liability protection above the underlying policy limits.


How to Reduce Your Risk:

  • Inspect decks, stairs, railings, docks, and outdoor showers before summer
  • Add adequate lighting to exterior walkways and waterfront areas
  • Repair loose boards, railings, and uneven surfaces promptly
  • Review liability limits if you frequently entertain or have higher-risk amenities
Beachside house with pool, green lawn, and blue sky

4. A “Friend Staying for the Week” Becomes a Rental Exposure


This is a big one for Cape and Island homeowners.


Maybe you're not running a full-time Airbnb. But what happens when you rent the house for two weeks in August? Or let a friend-of-a-friend pay to stay there while you're away?


Once money changes hands, the insurance conversation can change too.

Standard homeowners insurance isn't automatically designed for short-term rental activity, and relying solely on protection offered by a booking platform can leave gaps.


Summer rental exposure is particularly important here because so many Cape Cod, Nantucket, and Martha's Vineyard properties shift between personal use, seasonal occupancy, and rental use throughout the year.


Example Claim:

A Chatham homeowner rents their second home to another family for two weeks in August. One of the guests falls down the stairs and is seriously injured. When the homeowner reports the claim, questions arise about whether the property was being used as disclosed on the homeowners policy.


Coverage That May Help:

Depending on how frequently you rent the property, you may need a specific Home-Sharing Endorsement, Dwelling Policy, or specialized Short-Term Rental Insurance rather than relying on a traditional homeowners policy.


How to Reduce Your Risk:

  • Tell your insurance agent before renting your home
  • Don't assume Airbnb or VRBO protection replaces your own insurance
  • Make sure the occupancy listed on your policy accurately reflects how the property is used
  • Review liability coverage for guest amenities like bikes, kayaks, pools, hot tubs, or docks
Beachside house with pool, green lawn, and blue sky

4. A “Friend Staying for the Week” Becomes a Rental Exposure


This is a big one for Cape and Island homeowners.


Maybe you're not running a full-time Airbnb. But what happens when you rent the house for two weeks in August? Or let a friend-of-a-friend pay to stay there while you're away?


Once money changes hands, the insurance conversation can change too.

Standard homeowners insurance isn't automatically designed for short-term rental activity, and relying solely on protection offered by a booking platform can leave gaps.


Summer rental exposure is particularly important here because so many Cape Cod, Nantucket, and Martha's Vineyard properties shift between personal use, seasonal occupancy, and rental use throughout the year.


Example Claim:

A Chatham homeowner rents their second home to another family for two weeks in August. One of the guests falls down the stairs and is seriously injured. When the homeowner reports the claim, questions arise about whether the property was being used as disclosed on the homeowners policy.

Coverage That May Help:

Depending on how frequently you rent the property, you may need a specific Home-Sharing Endorsement, Dwelling Policy, or specialized Short-Term Rental Insurance rather than relying on a traditional homeowners policy.


How to Reduce Your Risk:

  • Tell your insurance agent before renting your home
  • Don't assume Airbnb or VRBO protection replaces your own insurance
  • Make sure the occupancy listed on your policy accurately reflects how the property is used
  • Review liability coverage for guest amenities like bikes, kayaks, pools, hot tubs, or docks

5. Kayaks, Paddleboards, Boats & Other Summer Toys Create Bigger Liability Risks Than Expected


For many Cape and Island homeowners, recreational equipment is simply part of summer.

The problem is that homeowners sometimes assume anything stored at their house—or used by their family and guests—is automatically fully protected by their homeowners policy.

That's not always the case.


Homeowners policies can provide some coverage for certain types of watercraft, but limitations can apply based on the type, size, horsepower, value, and use of the watercraft. And when someone gets hurt, the liability exposure can be much greater than the cost of replacing the equipment itself.


Example Claim:

A homeowner on Nantucket lets a visiting family member use their personal watercraft. The guest loses control and collides with another vessel, causing property damage and seriously injuring one of its passengers.

Suddenly, the concern isn't replacing the watercraft. It's a potentially significant liability claim.


Coverage That May Help:

Depending on the type of watercraft, coverage may be available under a homeowners policy or require a separate Boat or Watercraft Insurance Policy. A Personal Umbrella Policy may also provide additional liability protection when the appropriate underlying coverage is in place.


How to Reduce Your Risk:

  • Don't assume every boat or watercraft is covered by homeowners insurance
  • Review your policy before allowing guests to use recreational equipment
  • Make sure operators understand basic water safety rules
  • Tell your agent about newly purchased boats, jet skis, or other higher-value recreational equipment

Is Your Cape or Island Home Prepared for Summer?


Summer on Cape Cod and the Islands comes with risks that aren't always obvious when you're reviewing an insurance policy in January.


A finished basement, weekend rental, new jet ski, aging dock, or upgraded home technology can change your exposure without you realizing your insurance needs have changed too.


And that's exactly why your homeowners policy shouldn't be something you purchase once and forget about.


At McShea Insurance Agency, we've been helping homeowners across Cape Cod and the Islands protect their properties for nearly 40 years. We understand the unique challenges that come with coastal homes, seasonal properties, second homes, and high-value residences.


If you're not sure whether your current homeowners policy reflects how you're actually using your property this summer, reach out to McShea Insurance Agency for a complimentary policy review and no-obligation quote.


We'll help you understand your coverage, identify potential gaps, and make sure your insurance is keeping up with your home—not just checking a box.

Beachside house with pool, green lawn, and blue sky

Is Your Cape or Island Home Prepared for Summer?


Summer on Cape Cod and the Islands comes with risks that aren't always obvious when you're reviewing an insurance policy in January.


A finished basement, weekend rental, new jet ski, aging dock, or upgraded home technology can change your exposure without you realizing your insurance needs have changed too.


And that's exactly why your homeowners policy shouldn't be something you purchase once and forget about.


At McShea Insurance Agency, we've been helping homeowners across Cape Cod and the Islands protect their properties for nearly 40 years. We understand the unique challenges that come with coastal homes, seasonal properties, second homes, and high-value residences.


If you're not sure whether your current homeowners policy reflects how you're actually using your property this summer, reach out to McShea Insurance Agency for a complimentary policy review and no-obligation quote.


We'll help you understand your coverage, identify potential gaps, and make sure your insurance is keeping up with your home—not just checking a box.

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