What Policy Form Covers a Detached Garage?
Other Structures coverage, a standard part of your homeowners policy, usually pays to repair or rebuild a detached garage.
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Other Structures coverage usually isn't a number you pick yourself. It's set as a percentage of your dwelling coverage, so the garage limit follows whatever amount insures the house. Your quote lists this separately, often as Other Structures or Appurtenant Structures on the declarations page. Before closing, check that figure against what it would cost to rebuild the garage, not what it adds to the home's sale price. If you run a business out of it or rent it out, ask whether that changes what's covered.
Since the garage limit rides on a percentage of your dwelling coverage, a policy priced low on the house often carries too little to rebuild the garage, and you won't see that gap until you compare the actual number against rebuilding costs. Getting quotes side by side before closing is how you catch that shortfall while there's still time to fix it.
How much Other Structures coverage is actually enough?
The percentage your policy uses sets a dollar limit, and that limit is worth checking against real numbers before closing. Call a local contractor or use a rebuilding cost estimate for a structure the garage's size and materials. Compare that figure to what the declarations page actually lists for Other Structures. If the gap is large, that's worth raising with whoever is writing the policy, not something to catch after a storm takes the roof off.
A detached garage with electrical wiring, a workshop, or finished space above it usually costs more to rebuild than a plain two-car structure with a slab and a door. If yours has any of that, the automatic percentage tied to your dwelling coverage may fall short. Most insurers let you raise the Other Structures limit on its own, as an endorsement, without changing what the house itself is insured for.
Other Structures coverage responds to the same perils listed for the house. A tree falling on the garage, a storm tearing off the roof, fire spreading from the house, those are handled the way damage to the dwelling would be. What it doesn't cover is what's stored inside unless the policy says so separately. Tools, equipment, or a vehicle kept in the garage fall under personal property coverage or auto coverage, not Other Structures, so it's worth checking what each part of the policy actually includes.
If the garage is used for anything beyond parking and storage, like a side business, a rented unit, or regular use by someone outside the household, say so when getting quotes. Insurers price that differently, and some exclude it outright once a structure has commercial or rental use. Finding that out after a claim is a far worse time than finding it out before closing.
Can you add separate coverage just for the garage?
Most insurers let the garage sit outside the automatic percentage tied to the house. Instead of relying on whatever share of dwelling coverage the policy defaults to, you can ask for a specific dollar amount on the Other Structures line, sized to what the garage would actually cost to rebuild. This usually costs a bit more in premium, but it closes the gap between the automatic figure and the real number, especially on an older garage or one with upgrades the default percentage was never built to cover.
Raising the limit this way doesn't touch what the house itself is insured for. Dwelling coverage and Other Structures coverage are tracked separately on the declarations page, so increasing one doesn't mean overpaying for the other. If the contractor estimate for the garage comes in well above what the percentage-based limit provides, asking for that endorsement before closing is usually simpler than trying to adjust it later, after the mortgage and escrow numbers are already set.
Some policies also let you remove Other Structures coverage for a detached garage entirely, usually to lower the premium when a structure is being insured separately or torn down. This is rare for someone buying a house with an existing garage already in place, but it shows up in older policies being transferred or compared against a new quote. If a quote looks unusually low, check whether Other Structures coverage was reduced or dropped rather than assuming the price reflects the same protection.
Whichever direction the garage limit needs to move, it belongs in the conversation before the binder is issued, not after. Lenders generally only check that dwelling coverage meets the loan amount, not that Other Structures is enough to rebuild a garage, so nothing stops a policy from closing with a gap. Catching it early is the only point where fixing it is simple.
Before the binder is issued
Find the Other Structures number on the declarations page and compare it to what the garage would actually cost to rebuild. If it falls short, ask for a higher limit now, before the mortgage and escrow numbers are locked in.
