What Is Dwelling Coverage?: Home Insurance Coverage A Explained

Dwelling coverage, also called Coverage A, is the part of your homeowners policy that pays to repair or rebuild the physical structure of your home after a covered event. It protects the roof, foundation, walls, floors, doors, windows and attached structures like garages, decks and built-in appliances. Personal property coverage and the other structures section of your policy handle detached outbuildings and your belongings separately.

In an HO-6 policy, which covers condo units rather than standalone homes, dwelling coverage works differently because you don’t own your building’s exterior. Your condo association’s master policy covers the outer structure, meaning you’re not responsible for insuring the roof, exterior walls or common areas. What you do need to cover inside your unit depends on which type of master policy your association carries.

If you’re not sure which type your association carries, request a copy of its master policy before setting your own coverage limits. For a closer look at HO-6 policies, review MoneyGeek’s picks for the best condo insurance and confirm with an agent that your limits account for what the master policy leaves out.

A standard homeowners policy covers your dwelling under open perils terms, which means coverage applies to any event your policy doesn’t name as an exclusion. In practice, that’s a long list, and it covers the most common and costly causes of structural damage.

• Fire, smoke and lightning: These rank among the most common causes of serious structural damage. Open perils covers all three. That includes a house fire, one that spreads from next door and a lightning strike that ignites the structure.
• Wind and hail: Storms can damage your roof, siding or windows. In coastal states and tornado-prone areas, your policy may apply a separate, higher deductible for wind and hail claims instead of your standard one.
• Weight of ice or snow, and freezing: Heavy accumulation can damage your roof. Pipes or plumbing systems that freeze and burst cause damage too.
• Explosions and volcanic eruptions: These events are rare, but your policy still covers the structural damage they cause.
• Vandalism and riots: This covers deliberate damage to your home's structure, like a broken window or a damaged wall.
• Vehicle and aircraft impact: This covers structural damage if a car or truck crashes into your home, or if an aircraft strikes it.

The right dwelling coverage limit can fall short within a few years. Construction costs and inflation rise, and local building codes change. Together, they can push rebuild costs above what your policy will pay. Add one or more of these endorsements to keep your coverage current.

Dwelling coverage protects against a broad list of events, but several common causes of home damage fall outside what a standard homeowners policy covers. Knowing the exclusions before a loss happens gives you time to add separate coverage where it makes sense.

• Flooding: A standard homeowners policy doesn't cover damage from heavy rain, storm surge, overflowing rivers or any other external water source. You can buy flood insurance separately through the National Flood Insurance Program or a private insurer. Consider it if your home is in or near a flood-prone area.
• Earth movement: Standard dwelling coverage doesn't include earthquakes, landslides or sinkholes. Some insurers offer earthquake coverage as an endorsement. Consider it if you're in a seismically active region.
• Maintenance and wear and tear: A slowly deteriorating roof doesn't qualify as a covered loss, and neither does a foundation that settles over years or a structural system that gradually fails. Insurance is designed for sudden, unexpected damage, not problems that develop over time.
• Infestations: Termite and rodent damage can cause serious structural harm. A standard homeowners policy still treats it as a maintenance issue rather than a covered loss.
• Water backup: Standard dwelling coverage doesn't include damage from a failed sump pump or a backed-up drain. Most insurers offer a water backup endorsement that adds this protection at a relatively low cost.
• Extended vacancy: Many policies limit or exclude certain claims if your home sits unoccupied beyond a threshold, often 30 to 60 days. If you have a second home or a property sitting vacant, you may need a vacant home policy or endorsement.

Setting your dwelling coverage limit starts with one question: what would it cost to rebuild your home from scratch? That number isn’t the same as your home’s market value or purchase price. Confuse the two, and you could end up with far less coverage than you actually need.

A rough starting estimate of your rebuild cost comes from multiplying your home’s square footage by the average local construction cost per square foot. Local builders and insurance agents can help you find a reasonable per-square-foot figure for your area.

Every insurer uses its own formula to estimate your home’s replacement cost. The more accurately you describe your home’s features, construction type, square footage and finish quality, the closer the estimate is to your actual rebuild cost. 

Some insurers require a home inspection to get a firsthand look at details that affect the number. If the insurer’s figure differs from your own, you can often request a review or work with an independent appraiser to verify.

Carrying less dwelling coverage than your home’s full rebuild cost creates two problems. The first is the 80% coinsurance rule, which requires you to insure your home for at least 80% of its replacement cost. If your coverage falls below that threshold, your insurer can reduce the payout on partial losses and total ones alike.

The second problem is straightforward math. If a total loss costs $500,000 to rebuild and your policy only covers $350,000, you’re responsible for the remaining $150,000 out of pocket, regardless of what the coinsurance rule does to your payout.

Underinsurance is more common than most homeowners realize. After the 2021 Marshall Fire in Colorado, 74% of affected homeowners were underinsured, and more than a third had less than 75% of the coverage they needed to fully rebuild.

The table below shows how the 80% rule affects a $60,000 claim on a home with a $500,000 rebuild cost.

If a coverage review reveals you’re underinsured, the most immediate fix is to adjust your limit directly with your insurer. You can also add an endorsement like extended replacement cost or guaranteed replacement cost for an additional buffer if rebuild costs outpace your limit in the future.

Dwelling coverage pays for what matters most after a major home loss: putting the structure back. Your coverage limit should match your home’s rebuild cost. That’s a different calculation from market value, and it’s one many homeowners get wrong. If your limit falls below 80% of your rebuild cost, your insurer can reduce your claim payout under the coinsurance rule, even for a partial loss. Review your coverage with your agent, and ask about endorsements like extended replacement cost or inflation guard, which cover the most common shortfalls before they become expensive problems.