HO-3 insurance is the standard homeowners policy carried by most people with a mortgage in the United States. It covers your home’s structure against nearly every cause of damage unless the policy specifically excludes it, and it covers your belongings against a fixed list of 16 hazards. Liability protection, medical payments for guests, and temporary living expenses after a covered loss are built in. The coverage is broad, but the gaps are specific and worth knowing before you need them.
The Six Parts of an HO-3 Policy
Every HO-3 is organized into six coverages labeled A through F. The dwelling limit sets the shape of everything else, because most of the other limits are calculated as a percentage of it.
Coverage A pays to repair or rebuild the structure itself: walls, roof, flooring, built-in appliances, and attached garages. This is the open-perils part of the policy, meaning every cause of damage is covered unless the policy says otherwise.1Insurance Information Institute. Homeowners 3 – Special Form Agreement Fire, wind, hail, lightning, falling objects, water from a burst pipe, vandalism, and theft all fall inside the coverage. The limit should match what it would cost to rebuild your home from the ground up, not the market price or what you paid.
Coverage B covers detached structures: a freestanding garage, shed, fence, or guest house. The default limit is 10% of your dwelling coverage, so a $400,000 dwelling limit carries $40,000 for other structures. You can raise it for an added premium.
Coverage C protects your personal belongings. Unlike the dwelling, personal property is written on a named-perils basis, so only the hazards the policy lists qualify.1Insurance Information Institute. Homeowners 3 – Special Form Agreement The limit usually runs between 50% and 70% of the dwelling amount. A standard policy pays the depreciated value of damaged items unless you add replacement cost coverage, which pays what new equivalents actually cost.
Coverage D pays temporary living expenses when a covered event makes your home uninhabitable. Hotel bills, short-term rentals, and the increase in food costs above your normal spending all qualify. The cap typically falls between 20% and 30% of the dwelling limit.
Coverage E is personal liability. It pays when someone is injured on your property or you accidentally damage someone else’s property and face a lawsuit. Policies commonly start at $100,000, with $300,000 and $500,000 both common upgrades.2Insurance Information Institute. How Much Homeowners Insurance Do I Need It also follows you off the property for certain incidents, such as a dog bite at a park.
Coverage F pays medical bills for minor guest injuries without any question of fault. Limits usually range from $1,000 to $5,000 per occurrence, with some insurers offering up to $10,000.
The 16 Named Perils for Personal Property
Because your belongings are only covered against listed hazards, the list itself matters. A standard HO-3 covers personal property against:
- Fire or lightning
- Windstorm or hail
- Explosion
- Riot or civil commotion
- Damage caused by aircraft
- Damage caused by vehicles
- Smoke
- Vandalism or malicious mischief
- Theft
- Volcanic eruption
- Falling objects
- Weight of ice, snow, or sleet
- Accidental discharge or overflow of water or steam
- Sudden and accidental tearing apart, cracking, burning, or bulging of a heating, air conditioning, or sprinkler system
- Freezing of plumbing, heating, air conditioning, or sprinkler systems
- Sudden and accidental damage from artificially generated electrical current
A couch ruined by a burst pipe is covered. A couch ruined by moisture that built up in a basement over years is not, because gradual damage isn’t on the list. That distinction between sudden events and slow deterioration runs through most coverage questions.
Sub-Limits on Valuables
Even when a named peril applies, the policy caps payouts for certain high-value categories. These sub-limits surface most often after a theft:
- Jewelry, watches, furs, and precious stones: $1,500 for theft losses
- Firearms: $2,500 for theft losses
- Silverware and goldware: $2,500 for theft losses
- Cash, bank notes, and coins: $200
- Securities, deeds, and similar documents: $1,500
If a $10,000 engagement ring is stolen, a standard policy pays at most $1,500. Full protection for high-value items requires a scheduled personal property endorsement, sometimes called a floater, which lists each item with an appraised value and covers it for that full amount, often with no deductible.
What an HO-3 Does Not Cover
The exclusion list is where most claim disputes start. These are the risks your HO-3 won’t handle without a separate policy or endorsement.
Flood
No standard homeowners policy covers flooding. Rising water from a storm surge, overflowing river, or heavy rainfall is handled only by a separate flood insurance policy through the National Flood Insurance Program or a private insurer.3FEMA. Flood Insurance Flood policies carry a 30-day waiting period, so buying one as a storm approaches doesn’t work.
Earthquake and Earth Movement
Damage from earthquakes, landslides, sinkholes, and soil settling is excluded. In seismically active areas, you’ll need a standalone earthquake policy or an endorsement on your HO-3.
Sewer and Drain Backup
Water that backs up through a sewer line, drain, or sump pump isn’t covered under a standard HO-3. This is a separate category from a burst pipe, which is covered. Sewer backup is one of the most common causes of basement damage, and protection requires a water backup endorsement, usually inexpensive relative to the risk.
War, Nuclear Hazard, and Government Action
The standard form excludes damage from war (including undeclared war, insurrection, and rebellion), nuclear hazards, and government seizure or destruction of property.1Insurance Information Institute. Homeowners 3 – Special Form Agreement One narrow exception for government action: if authorities demolish your home to stop a fire from spreading and the fire itself would have been covered, the policy pays. Nuclear radiation is excluded entirely, though a fire resulting from a nuclear event may still be covered as fire damage.
Maintenance Failures and Intentional Damage
Insurers don’t pay for damage caused by neglect, wear and tear, mold, pest infestations, or deterioration. A roof that leaks because worn shingles were never replaced is a maintenance problem, not an insurable event. Damage you cause on purpose is also excluded, and a determination that a fire was deliberately set brings claim denial and possible criminal charges.
Building Code Upgrades
After a covered loss, your municipality may require you to rebuild to current codes rather than the ones in effect when your home was built. Bringing an older home up to modern electrical, plumbing, or structural standards can add tens of thousands to the rebuild cost, and a standard HO-3 won’t cover those extra dollars. An ordinance or law endorsement fills the gap, typically adding 10% to 25% of your dwelling coverage for code upgrades. For a home more than 20 years old, it’s worth serious consideration.
Roof Coverage Traps
Roof claims generate more disputes than almost any other part of homeowners insurance, because many insurers no longer pay full replacement cost for roofs, particularly older ones.
Once a roof hits a certain age (generally 15 to 20 years), your insurer may automatically switch coverage from replacement cost to actual cash value, which deducts depreciation. On a roof that would cost $60,000 to replace, with $25,000 in depreciation and a $1,500 deductible, an actual cash value policy pays $33,500. The remaining $26,500 falls on you.
Some insurers apply roof surfacing payment schedules, which assign a fixed annual depreciation rate based on roofing material. Asphalt shingles might lose 4% per year, so a 12-year-old shingle roof with a $15,000 replacement cost drops by 48%, leaving a potential payout of $7,800. These schedules usually apply only to wind and hail; fire damage still pays at replacement cost. A few states have banned actual cash value roof endorsements, while others allow them freely. Your declarations page shows exactly how your roof is covered.
Deductibles, Especially Wind and Hail
Your deductible is what you pay out of pocket before the insurer covers the rest. Most HO-3 policies carry a flat dollar deductible, commonly $1,000, $2,000, or $2,500, that applies to most claim types.
Wind and hail is the exception. In storm-prone states, particularly across the central U.S. and along the coast, insurers often attach a separate percentage-based deductible for wind and hail damage. These typically run from 1% to 5% of the dwelling coverage. On a $400,000 policy with a 2% wind/hail deductible, the out-of-pocket cost before coverage kicks in on storm damage is $8,000. That catches homeowners off guard when they file a first hail claim expecting a $1,000 deductible. Your declarations page shows whether a separate wind/hail deductible applies and at what percentage.
Coinsurance and the Risk of Being Underinsured
Most HO-3 policies include a coinsurance clause requiring you to insure the home for at least 80% of its replacement cost. Fall below that threshold and the penalty reduces your payout on every claim, not just total losses.
The math: if your home would cost $500,000 to rebuild and you’re required to carry at least 80% ($400,000) but you only have $300,000 in coverage, you’ve met 75% of the requirement ($300,000 รท $400,000). The insurer pays 75% of any covered loss, minus your deductible. On a $40,000 kitchen fire, instead of $38,000 after a $2,000 deductible, you receive $28,500. You become a co-insurer for the difference.
Construction costs have climbed sharply, which means a dwelling limit that was adequate at purchase may leave you underinsured now. Some policies include an inflation guard endorsement that automatically increases the dwelling limit by 2% to 8% per year. Even with that, a major renovation changes your replacement cost in ways a fixed percentage adjustment won’t capture, so reviewing coverage after any remodel matters.
Two endorsements offer a safety net beyond the stated dwelling limit. Extended replacement cost adds a buffer, usually 20% to 50% above the dwelling limit, if rebuilding costs exceed your coverage. Guaranteed replacement cost goes further and commits the insurer to pay whatever rebuilding actually costs, even if the final bill far exceeds the policy limit. Guaranteed replacement cost is harder to find and more expensive, but it eliminates the underinsurance risk entirely.
Filing a Claim and Pushing Back on a Low Estimate
When damage happens, contact your insurer as soon as possible, through an app, online portal, or phone. Provide the date and cause of the loss, a description of the damage, and any steps you’ve already taken to prevent further harm (tarping a damaged roof, shutting off water). An adjuster then assesses the damage in person or virtually and calculates the payout based on the extent of damage, your deductible, and whether the loss is valued at replacement cost or actual cash value. Under replacement cost coverage, the insurer often pays the depreciated amount first and reimburses the rest once you complete repairs and submit receipts.
If the insurer’s damage estimate seems too low, most HO-3 policies include an appraisal clause. Each side picks an independent appraiser, and the two try to agree on the loss amount. If they can’t, the dispute goes to a neutral umpire. Agreement by any two of the three is binding. Each party pays its own appraiser and splits the umpire’s fee. Appraisal only resolves the dollar amount of a loss; it cannot decide whether something is covered.
For larger or more complex claims, a public adjuster works for you rather than the insurer and handles documentation, negotiation, and settlement. Public adjusters charge a percentage of the settlement, typically 3% up to 30% depending on claim size and complexity, taken from your payout. On a $10,000 claim, the fee rarely pencils out; on a $150,000 claim where you believe the insurer is significantly underpaying, it can be worthwhile.
Keeping the Policy Valid
Coverage stays in force only if you hold up your end of the contract.
Maintain the property. Routine upkeep is your responsibility: fix leaky roofs, address plumbing issues, keep the house in reasonable condition. Damage from deferred maintenance gets denied.
Provide accurate information. Misrepresenting the home’s condition, occupancy, or use when applying can void the policy. Failing to disclose that you’re renting to tenants or running a business from home is a common reason claims get denied. Report major renovations too, since they change your replacement cost.
Report claims promptly. Policies require notification within a reasonable timeframe. Delays can reduce payouts, especially when the delay lets damage worsen. Document everything with photos and keep receipts for any emergency repairs.
Vacancy
If the home sits empty for an extended period, typically 30 to 60 days depending on the policy, a vacancy clause kicks in and restricts coverage. Losses from burst pipes, theft, and vandalism may be excluded entirely while the home is vacant. This matters between tenants on a rental, during long work absences, or with an inherited home. A vacant home isn’t the same as an unoccupied one: if furniture is still inside and you intend to return, most policies treat that more favorably than a completely empty property.
Mortgage Lapses and Force-Placed Insurance
If you have a mortgage, the lender requires homeowners insurance for the life of the loan. Letting the policy lapse, even accidentally, triggers force-placed insurance. Before placing coverage, the mortgage servicer must send a written notice at least 45 days before charging any premium, followed by a reminder if proof of insurance hasn’t arrived within 15 days.4Consumer Financial Protection Bureau. 12 CFR 1024.37 Force-Placed Insurance If coverage still hasn’t been restored, the servicer places insurance and can charge retroactively to the first day of the lapse.
Force-placed insurance costs two to ten times a standard policy and protects only the lender’s interest in the structure. It covers none of your belongings and no liability. Keeping a policy active, without even a brief gap, is the only way to avoid it. Non-renewal, where the insurer declines to extend coverage at the end of the term, has become more common in areas with wildfire, hurricane, or hail exposure. Insurers must give advance written notice, typically 30 to 60 days before the renewal date. If you receive a non-renewal notice, start shopping immediately, because waiting until the policy actually expires risks the same force-placed coverage.