Does Home Insurance Cover Detached Garages?

Homeowners insurance covers detached garages under Coverage B, but the default limit is only 10% of your dwelling coverage amount.

See if you're overpaying for home insurance below.

Written by Mark Fitzpatrick

Updated: April 2, 2026

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Key Takeaways

Coverage B of your homeowners insurance covers a detached garage against fire, windstorm, hail, lightning, vandalism and other named perils, but it does NOT cover flood or earthquake damage regardless of cause.

Coverage B defaults to 10% of your dwelling limit, meaning a $250,000 policy provides only $25,000 for all detached structures combined. If your garage is worth more, you need an endorsement to increase the limit.

Detached garages used for business purposes (a home workshop renting commercial space or a studio with paying clients) may require a separate business rider; standard Coverage B excludes business liability in most policies.

Homeowners insurance covers a detached garage under Coverage B (Other Structures coverage), not the same coverage that protects your main dwelling. Coverage B applies when a detached garage is damaged by fire, windstorm, hail, lightning, vandalism or other named perils. The key limitation: Coverage B defaults to 10% of your dwelling coverage amount, which means a $250,000 home policy provides just $25,000 for all detached structures combined. Your garage, shed, fence and any other unattached structures share that cap. If your garage is worth more than that limit, you have a coverage gap.

Whether Coverage B applies depends on two factors: whether the garage is truly detached and whether the damage resulted from a covered peril. A breezeway connecting the garage to your house may reclassify the structure under Coverage A instead. Flood and earthquake damage are excluded from Coverage B, just as they are from Coverage A.

What Coverage B Covers for Your Detached Garage

Coverage B covers detached garages against the same named perils as the main dwelling: fire, lightning, windstorm, hail, theft of structural components, vandalism and falling objects, subject to the 10% default limit.

Fire and Smoke Damage

A detached garage destroyed by fire is covered up to the Coverage B limit. Coverage applies whether the fire starts in the garage or spreads from another source.

Windstorm and Hail

Wind or hail damage to the garage roof, siding or doors is a standard covered peril. Wind-driven rain may be covered if it enters through damage the wind caused.

Lightning Strike

A direct strike to the garage structure (or a resulting fire) is covered. Surge damage to electronics inside (tools, chargers) falls under personal property coverage, not Coverage B.

Vandalism and Theft of Structure Components

Vandals breaking windows, doors or overhead doors are covered. Theft of structural components like copper wiring or plumbing fixtures falls under homeowners coverage, but detached items like HVAC units may require separate coverage.

Falling Objects

A tree limb or other object that falls on the garage roof and causes structural damage is covered under most standard policies.

Weight of Ice, Snow or Sleet

A roof collapse from accumulated snow or ice buildup is a covered peril in most states.

What Coverage B Doesn't Cover for Your Detached Garage

Coverage B excludes flood, earthquake, earth movement, gradual decay, pest damage and business use liability (the same perils excluded from Coverage A on the main dwelling).

Flood Damage

Flood water entering the garage from storm surge, rising rivers or overland flow is not covered. A separate flood insurance policy through the National Flood Insurance Program (NFIP) or a private insurer is required.

Earthquake and Earth Movement

Ground movement of any kind (including sinkholes and soil settling) is excluded. A separate earthquake policy or endorsement is required.

Normal Wear, Rot and Pest Damage

A roof that deteriorates over time, wood rot from moisture or termite damage are maintenance issues, not insurable events. Coverage B does not pay for preventable deterioration.

Flood-Driven Vehicles

A vehicle swept into the garage by flood water, or damage from the vehicle itself, is not a homeowners claim. Comprehensive auto insurance covers vehicle flood damage.

Business Use Liability

If your detached garage is used as a commercial workspace with employees or customers on site, standard Coverage B liability protection does not extend to that use. A business owner's policy (BOP) or home business endorsement is required.

What Determines Your Coverage B Limit for a Detached Garage

Coverage B applies to a detached garage only when the structure has no permanent physical connection to the main dwelling. A breezeway linking the garage to the house may reclassify the structure as part of Coverage A (Dwelling) or create ambiguity during the claims adjustment process.

The 10% limit applies to all detached structures combined, not per structure. A $250,000 dwelling policy provides $25,000 in Coverage B, shared across your garage, shed, fence, pool enclosure and any other unattached structure. A finished garage with built-in workshop space, insulation, plumbing or HVAC may be valued well above that shared cap. Coverage B follows the same framework for shed coverage and fence coverage.

KNOW YOUR COVERAGE B LIMIT BEFORE YOU FILE

Your declarations page shows your Coverage B limit as a dollar amount or a percentage of Coverage A. If you've improved your detached garage since buying your policy (added electrical, insulation or a workshop), request a re-appraisal. Increasing Coverage B to reflect the garage's actual replacement cost typically adds a modest amount to your annual premium, far less than the gap a claim would expose.

Should You File a Claim for Detached Garage Damage?

Filing a Coverage B claim makes financial sense only when the repair cost meaningfully exceeds your deductible. Standard homeowners deductibles range from $500 to $2,500. A claim for minor garage door damage costing $800 against a $1,000 deductible produces a net payout of $0, and a claim on your record that may raise your renewal premium. When the repair estimate is $3,500 and the deductible is $1,000, the net payout is $2,500; filing is more defensible in that scenario, but the rate impact still factors in.

A homeowners claim can raise renewal premiums by 9% to 20% depending on the insurer and state. For repairs under $2,000, paying out of pocket is often cheaper over a three-year window than filing.

THE BREAK-EVEN ON FILING

A $2,500 payout with a $300 annual premium increase takes roughly eight years to break even. Shopping your rate after a claim is always an option. In most states, insurers can't drop you solely for filing one claim, but they can raise your rate.

How to File a Coverage B Claim for Your Detached Garage

Filing a Coverage B claim for a detached garage moves faster and pays more when you know what your insurer expects at each step.

1
Document the Damage Before Any Cleanup
Photograph the garage exterior and interior immediately, before removing debris, boarding windows or making temporary repairs. Use timestamp-enabled photos. Adjusters use documentation to verify the scope of loss; gaps in photos can reduce your payout.
2
Make Emergency Repairs to Prevent Further Damage
Your policy requires you to mitigate further loss after a covered event. Tarping a damaged roof or boarding a broken door is expected and reimbursable as part of the claim. Keep all receipts. Do not make permanent structural repairs before the adjuster inspects.
3
File Your Claim Promptly
Contact your insurer's claims line within 24 to 72 hours of the loss. Most major insurers (State Farm, Allstate, USAA) accept claims online, by app or by phone. Have your policy number, the date of loss and your photo documentation ready at the time of filing.
4
Request an Itemized Estimate From a Licensed Contractor
Your insurer will send an adjuster, but you can also submit your own contractor estimate. If the adjuster's estimate is lower than your contractor's, you have the right to dispute the amount. Most states allow a public adjuster or appraisal process to resolve disputes.
5
Confirm Your Coverage B Limit and Replacement Cost Basis
Ask your insurer whether Coverage B pays actual cash value (ACV) or replacement cost value (RCV). ACV deducts depreciation; a 15-year-old garage structure may receive far less than its replacement cost. If your policy pays ACV, confirm whether a replacement cost endorsement applies to Coverage B or only to Coverage A.
6
Track the Full Claims Timeline
Standard homeowners claims are resolved in 15 to 30 days for straightforward structural losses. Complex claims (total garage losses, disputed estimates or catastrophe-declared events) can take 60 to 90 days. Your state's insurance department sets response-time requirements your insurer must meet.

Detached Garages and Home Insurance: Bottom Line

Homeowners insurance covers a detached garage under Coverage B against fire, windstorm, hail and other named perils, but NOT flood or earthquake damage. The default Coverage B limit is 10% of your dwelling coverage, which may leave a gap if your garage is fully finished or contains substantial installed equipment. Review your Coverage B limit on your declarations page, get a replacement cost estimate for your garage and ask your insurer about raising the limit if you're underinsured.

Frequently Asked Questions About Detached Garage Insurance Coverage

Does my homeowners insurance cover my detached garage the same way it covers my house?

A detached garage is covered under Coverage B (Other Structures), not Coverage A (Dwelling). Coverage B has a default limit of 10% of your dwelling coverage, which means a $250,000 home policy provides $25,000 for all detached structures combined. Your garage, shed, fence and any other unattached structures share that cap. If your finished garage is worth $60,000, you have a $30,000 gap at the default limit. Coverage B can be increased by endorsement, but most homeowners don't know that option exists.

Does my homeowners deductible apply to a detached garage claim?

Yes. Your standard homeowners deductible (typically $500 to $2,500) applies to Coverage B claims the same way it applies to Coverage A claims. If your garage door is damaged in a hailstorm and the repair costs $900 against a $1,000 deductible, your net insurance payout is $0.

What covers my garage if a flood damages it?

Standard homeowners insurance excludes flood damage from any cause (including storm surge, overland flooding and sewer backup) under both Coverage A and Coverage B. A separate flood insurance policy through the National Flood Insurance Program (NFIP) or a private insurer is required to cover flood damage to detached structures.

Will filing a Coverage B claim for my garage affect my homeowners premium?

Filing any homeowners claim (including a Coverage B claim for a detached structure) can increase your renewal premium by 9% to 20% depending on your insurer and state. Claims stay on your CLUE (Comprehensive Loss Underwriting Exchange) report for up to seven years and are visible to any insurer you apply with. For small repairs under $2,000, paying out of pocket is often the better financial decision.

Do coastal states handle Coverage B differently for garage wind damage?

In coastal and hurricane-prone states (Florida, Texas, Louisiana, South Carolina and others), wind and hail deductibles are often separate from the standard homeowners deductible and expressed as a percentage of the Coverage A dwelling limit, typically 1% to 5%. This separate wind/hail deductible applies to all covered structures including detached garages. A $250,000 policy with a 2% wind deductible means you absorb the first $5,000 of any wind or hail claim before insurance pays.

Does home insurance pay to rebuild my garage at today's costs or at its depreciated value?

It depends on your policy. Policies that pay actual cash value (ACV) deduct depreciation; a 20-year-old wood-frame garage may receive much less than its current replacement cost. Policies with replacement cost value (RCV) coverage pay what it costs to rebuild the structure with comparable materials today, regardless of age. Confirm whether your policy's RCV coverage extends to Coverage B structures or only to the main dwelling.

About Mark Fitzpatrick

Mark Fitzpatrick, a Licensed Property and Casualty Insurance Producer, is MoneyGeek's resident Personal Finance Expert. He has analyzed the insurance market for over five years, conducting original research for insurance shoppers. His insights have been featured in CNBC, NBC News and Mashable.

Fitzpatrick holds a master’s degree in economics and international relations from Johns Hopkins University and a bachelor’s degree from Boston College. He's also a five-time Jeopardy champion!

He writes about economics and insurance, breaking down complex topics so people know what they're buying.

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