Other structures coverage (Coverage B), explained

The house is rarely the only thing on a property. Detached garages, sheds, fences, and driveways are part of how people use their homes, and when a storm or fire hits, they are often damaged alongside the main building. Standard homeowners policies cover them through a separate coverage with its own limit, usually labeled Coverage B. This guide explains what counts as an other structure, how the limit is commonly set, what is excluded, and how real claims on these structures tend to work.

What Coverage B is and why it is separate

In a standard HO-3 style policy, Coverage A insures the dwelling, and Coverage B insures other structures on the residence premises. The split exists because detached buildings are used differently, are built differently, and are usually worth much less than the home. A detached structure gets its own limit instead of competing for the dwelling limit, which is why a damaged fence does not eat into the money available for the house. Coverage B is closely tied to the dwelling limit, so it helps to read this guide alongside the one on dwelling coverage.

Coverage B is typically written on the same open-perils basis as the dwelling, which means it covers direct physical loss unless the policy excludes the cause. The same exclusions therefore apply: flood, earth movement, neglect, and long-term wear and tear are commonly left out. A fence that rots from years of neglect is a maintenance issue, while a fence flattened by a windstorm is a covered loss. Exact wording varies by insurer and state, so use this guide as a map and your policy as the authority.

What counts as an other structure

The defining feature of an other structure is separation. Standard language describes a structure set apart from the dwelling by clear space, and it adds that a structure connected to the house only by a fence, utility line, or similar connection still counts as separate. That detail matters because a garage linked to the house by a short fence line is not suddenly part of the dwelling. A garage attached to the house, in contrast, is generally treated as part of the dwelling under Coverage A.

Typical examples include a detached garage, a carport, a shed, a barn or workshop on residential property, a gazebo or pergola, a guest house or pool house used by the household, and fences and retaining walls. Many insurers also treat hardscape such as driveways, walkways, and patios as other structures. Pools, hot tubs, and their equipment are handled inconsistently, with some insurers counting them under Coverage B, some limiting or excluding them, and some requiring a separate endorsement, so ask rather than assume. If you are not sure whether something is a structure at all, the question to ask your agent is simple: under which coverage and at what limit would this item be paid?

Insurers do not always see every structure on a property. A policy may have been underwritten from an inspection or an aerial image that missed a recent shed, a new pool house, or a converted outbuilding, and a structure you build after buying the policy is not automatically reflected in the limit. When you add or substantially improve a detached building, tell your insurer, describe how it will be used, and ask whether the Coverage B limit still fits. It is a short call that can prevent an argument over whether a building was covered, how it was classified, or whether a business or rental use applies.

What is commonly excluded or limited

Three limits catch homeowners off guard. First, structures used in whole or in part for business are commonly excluded from Coverage B. A workshop used only for hobbies is different from one used to run a trade, and mixed use can be enough to trigger the exclusion, so describe the actual use to your insurer. Second, a structure rented or held for rental to someone who does not live in your main home is commonly excluded, with an exception for a building used solely as a private garage. A detached apartment above a garage that you rent to an outside tenant may therefore need a landlord policy rather than Coverage B. The guide on detached garage and workshop claims covers the business-use limits in more detail.

Third, the land under a structure is not insured, and the same goes for the lawn. Trees, shrubs, and plants have only limited coverage, usually as a small additional allowance, and often only for a short list of named causes such as fire or vandalism rather than wind or disease. Tree removal is similarly limited, typically to cases where a fallen tree damages a covered structure. Damage from settling, cracking, or freeze and thaw of concrete is generally treated as wear or earth movement and is not covered, while the same driveway crushed by a covered event, such as a fallen tree or fire, is a different matter. Read the exclusions section in your policy so you know which causes your insurer treats as covered and which it treats as maintenance.

How the limit is set: a percentage of Coverage A

The Coverage B limit is commonly calculated as a percentage of the Coverage A dwelling limit, and 10 percent is a frequent default in standard forms. Some insurers use different percentages, and many let you buy a higher limit. A hypothetical makes the arithmetic plain: a home with a $300,000 dwelling limit and a 10 percent default would have a $30,000 other structures limit. Because the limit follows the dwelling limit, it also changes when Coverage A changes, so a dwelling limit that is too low pulls Coverage B down with it.

Two features of the limit shape every claim. It is a single shared pool, so a storm that damages a garage, a shed, and a fence draws all three payments from the same amount rather than giving each its own. And it is generally additional insurance, which means it does not reduce the dwelling limit, and unused dwelling coverage cannot be moved over to cover a shortfall on a detached building. If you have valuable detached structures, such as a large workshop, a finished guest house, or a long run of expensive fencing, compare the structure’s rebuilding cost with the Coverage B dollar amount on your declarations page. Raising the limit is usually far easier before a loss than after one.

How a Coverage B loss is paid

Many policies settle other structures on the same basis as the dwelling, paying replacement cost with depreciation held back until the work is complete, but terms vary and some policies pay actual cash value on particular items such as fences or screened enclosures. The distinction can change a payment by thousands of dollars on an older structure, so check the loss settlement section and any endorsement. The guide to actual cash value versus replacement cost explains the difference.

The deductible matters more here than people expect. It is generally applied once per occurrence to the combined covered loss, so when a fence is damaged in the same storm as the roof, the fence is usually folded into the same claim without a second deductible. But if the fence is the only thing damaged and you carry a percentage wind or hail deductible, the fence repair can easily cost less than the deductible and produce no payment at all. Understanding your deductible before deciding whether to file is covered in the guide on home insurance deductibles.

Practical costs around a Coverage B loss deserve attention too. Debris removal is commonly part of the covered loss, so the cost of hauling away a collapsed shed or a broken fence should be listed in the estimate rather than left for you to absorb. Temporary protection, such as tarping a damaged garage roof or securing an opening so that weather and thieves cannot get in, is usually something you are expected to do, and the reasonable cost is generally part of the claim, so keep the receipts. If rebuilding a structure would require meeting current code or obtaining permits, ask the adjuster whether any ordinance or law coverage applies, because a standard policy may pay only a limited amount toward code-required work.

Claim examples

Consider a few hypothetical situations. A windstorm flattens a section of wood fence. Wind is a covered cause, and the fence is an other structure, so the cost to repair or replace the fence is covered under Coverage B, subject to the deductible and the settlement basis. A fire starts in a detached shed. The shed itself is a Coverage B loss, while the mower, tools, and stored belongings inside are personal property under Coverage C and are paid under that coverage’s terms and limits. A large limb from your own tree falls on a detached garage and crushes part of the roof. The garage damage is a Coverage B loss, and the policy may also pay a limited amount to remove the tree from the structure.

Now consider a neighbor’s tree falling across the property line onto your garage. Your policy generally responds first to the damage, and your insurer may later pursue the neighbor if the facts support it, as discussed in the guide to the neighbor’s fallen tree claim. Hail that dents a gazebo roof or a vehicle that is not owned by someone in your household and strikes the fence are also typical Coverage B claims. By contrast, a fence that leans after years of rot, a driveway that cracks from settling, or a shed floor ruined by gradual moisture are usually maintenance matters, not covered losses. The cause of the damage, not just the damage itself, decides coverage.

Real storms rarely damage just one thing, so picture a hailstorm that dents the house roof, the detached garage roof, and the metal gates on a fence. The house roof is a Coverage A loss, while the garage and the fence are Coverage B losses that share one limit. All of it is one occurrence, so one deductible is generally applied to the combined covered loss. The practical lesson is to describe the whole property to the adjuster at the first visit. When a structure is left out of the original estimate, getting it added later takes a supplement request, extra photographs, and patience, all of which are easier to avoid with a complete walk-around at the start.

When the limit is not enough

The most common Coverage B problem is a limit that looks fine until a bigger loss arrives. Imagine a detached garage that would cost $45,000 to rebuild under a $30,000 other structures limit. The policy cannot pay beyond its limit, so you would absorb the difference, plus the deductible, even if the dwelling limit sits largely unused. Add a damaged fence and shed from the same storm, and the shared limit is stretched thinner still.

If you own structures that are costly to replace, ask your insurer whether it offers a way to increase Coverage B, and whether a particular building such as a pool house or finished guest house should be separately insured. A guest house rented to outsiders or a workshop used for a business may need coverage that a homeowners policy does not provide. Raising limits usually adds premium, but the cost of finding a gap after a loss is higher. The guide to endorsements and riders describes how policy changes of this kind work.

Documenting and filing a Coverage B claim

Other structures are often the afterthought in a claim, which is a good reason to make them part of the file from the start. Take photographs of each structure now, including the interior of the garage or shed, and keep any permits, receipts, or contractor invoices from when it was built or repaired. After a loss, photograph the damage from several angles before making temporary repairs, protect the structure from further damage, and keep the receipts. Write down the dimensions, materials, and approximate age of each damaged item, for example the length and height of a fence, because a scope that simply says “fence” is easier to underpay.

When the insurer’s adjuster visits, point out every damaged structure so that none is skipped, and check that the estimate lists each one with its own line items. Shared fences deserve a special check: your policy covers what you own, and ownership of a boundary fence is determined by your deed, survey, and local rules, so confirm responsibility before you file. A public adjuster can help with inventorying and presenting a loss that involves several structures, but the policy’s terms and limits still decide what is payable. For state-specific questions about how limits and settlements work, your state department of insurance and the NAIC consumer pages are the places to confirm.