Dwelling coverage (Coverage A) explained

Dwelling coverage, labeled Coverage A on your declarations page, pays to repair or rebuild the house you live in and the structures attached to it, such as an attached garage, deck or porch. It is the largest number on the policy, and several other limits are measured from it, so a mistake here spreads through the whole policy.

This guide follows the ISO HO-3 form (HO 00 03 05 11, May 2011 edition), a model many insurers' own forms follow. Your insurer's form and your state's amendatory endorsements control, so read your policy next to this one.

What Coverage A insures

The HO-3 covers the dwelling on the residence premises shown in your declarations, "including structures attached to the dwelling," plus materials and supplies on or next to the property that are being used to build, alter or repair the house or other structures. In practice that means everything that stays with the house when you sell it: roof, framing, siding, windows, interior walls, flooring, cabinets, plumbing, wiring, the furnace and built-in appliances.

The form says in one sentence what it leaves out: it does not cover land, "including land on which the dwelling is located." After a total fire the lot is still yours and still worth something; the insurer is paying for the structure only. That is why a limit copied from your purchase price or market value is the wrong number, a point covered at length in replacement cost vs market value: why your home's price is the wrong number.

Whether a structure is attached or detached decides which coverage applies. A garage that shares a wall or roof line with the house sits under Coverage A. A garage separated by clear space sits under Coverage B, which is usually capped at 10% of Coverage A (see Other structures coverage (Coverage B): fences, sheds and garages). A breezeway or covered walkway can tip it either way, so ask your agent how your insurer classifies yours.

Open perils, with exclusions

On an HO-3, Coverage A insures against "direct physical loss" from any cause the policy does not exclude. That is an open perils approach, and the exclusions are the real boundary of the coverage. The big ones are flood and surface water, sewer and drain backup, earth movement such as earthquakes, landslides and sinkholes, power failure that starts off your property, neglect, war, nuclear hazard and intentional loss. Wear and tear, rust, rot, mold (with a narrow exception for hidden mold from accidental plumbing discharge), settling and cracking, and faulty workmanship or maintenance are also out, though a covered loss that follows from them can still be paid. Collapse is covered only when it is abrupt.

Two of those deserve a warning. Ordinance or law, meaning the extra cost of rebuilding to current building codes, is excluded from the basic coverage and then given back as an additional coverage of up to 10% of the Coverage A limit. And flood is excluded no matter how it is caused, which is why does homeowners insurance cover flooding? is a question worth asking before a storm, not after. The full list is in what homeowners insurance doesn't cover.

What Coverage A does to your other limits

Other coverages are tied to the dwelling limit, some by the form itself and some by your insurer's declarations. Say your Coverage A limit is $400,000:

The last two are not fixed by the form. The California Department of Insurance's homeowners guide calls contents "generally around 50% of the dwelling amount" as a guideline only and puts Coverage D at normally 20% of Coverage A. The Insurance Information Institute (Triple-I) gives 50 to 70 percent for belongings and about 20 percent for living expenses (III, accessed October 2026). The Texas Department of Insurance says living-expense coverage might be limited to 10 to 20% (TDI, updated June 2026). Your declarations page shows the real figures.

How a Coverage A claim is paid

The HO-3's Loss Settlement condition has several moving parts, and each one has caught homeowners by surprise.

1. Replacement cost, if you are insured to 80%. If the limit on the damaged building is at least 80% of its full replacement cost just before the loss, the insurer pays the cost to repair or replace without deducting depreciation, up to the least of the limit, the cost of like kind and quality, or what you actually spend. Below 80%, a penalty applies, explained in How much dwelling coverage do I need?.
2. Actual cash value first. The insurer pays no more than actual cash value until the work is complete. The exception is a small loss, one that is both under 5% of the limit and under $2,500.
3. The rest when you finish. Once repairs are done and documented, the held-back depreciation is released. You can also claim on an actual cash value basis first and still collect the balance later, as long as you tell the insurer within 180 days of the loss that you intend to repair or replace.
4. Rebuilding elsewhere. If you rebuild at a new site, the payment is limited to what the same building would have cost at the original address.

A hypothetical shows the rhythm. A kitchen fire costs $42,000 to repair, and the adjuster depreciates the damaged cabinets, flooring and appliances by $9,000. With a $2,500 deductible, the first payment is $42,000 − $9,000 − $2,500 = $30,500. After the contractor finishes and you send the invoices, the insurer releases the $9,000 holdback, for $39,500 in total. If your lender is named on the policy, it appears on the check too (why your mortgage company is on the claim check).

Read the form for exceptions. Under the ISO wording, awnings, carpeting, household appliances and outdoor antennas and equipment are settled at actual cash value even on a replacement cost policy, and many insurers' own forms differ. Roofs are the other common carve-out: a roof payment schedule or ACV roof endorsement can cut the payout sharply on an older roof (Roof payment schedules and ACV roof endorsements). Fannie Mae's Selling Guide, for example, now says roofs must be insured but need not be insured on a replacement cost basis (Fannie Mae B7-3-02, version of August 5, 2026), and Fannie Mae and Freddie Mac dropped their roof replacement cost requirement in March 2026.

Layers that sit on top of the limit

Four add-ons change what Coverage A can do after a large loss. Extended replacement cost pays an extra 5 to 25 percent above the limit, according to Triple-I, while guaranteed replacement cost, offered by fewer insurers, pays the full rebuild. An inflation guard raises the limit at renewal with local building costs. Ordinance or law coverage can be increased beyond the 10% in the form. None of them rescues a limit set far too low, because extended and guaranteed coverage often depend on your having insured to the insurer's own estimate. Compare them in extended and guaranteed replacement cost coverage and ordinance or law coverage: paying to rebuild to code.

The form itself also varies. An HO-5 broadens the contents coverage, an HO-8 is built for older homes where rebuild cost exceeds market value, and a condo HO-6 insures only the unit interior and improvements. The which homeowners policy form fits your home? helps identify which one you hold.

Check these on your declarations page

• The Coverage A dollar amount, and whether it came from a replacement cost estimate and when
• The loss settlement basis for the dwelling (replacement cost or actual cash value), and any roof exception
• Extended or guaranteed replacement cost, an inflation guard percentage, and the ordinance or law percentage
• The deductible, and whether it is a flat dollar amount or a percentage of this limit
• Your mortgage lender, listed as the mortgagee

Key takeaways

• Coverage A insures the house and attached structures against any cause the policy does not exclude, but never the land.
• Several other limits are measured from it, so the dwelling number affects everything from fences to tree removal.
• Full replacement cost depends on carrying at least 80% of rebuilding cost under the ISO form; below that, payments shrink.
• Expect actual cash value first and the depreciation holdback after repairs, with carve-outs for items like carpet, appliances and roofs.
• Use home replacement cost estimator or your insurer's estimate to test the limit, not your purchase price.