What Is Coverage A? Home Insurance Dwelling Coverage Explained (HO-3)

Your home insurance policy is split into parts. Each part has a letter, from A to F. Coverage A is the big one. It pays to fix or rebuild your house if something like a fire damages it.

In this post, we'll explain Coverage A in plain words. We'll show how an add-on called extended replacement cost can give you extra money to rebuild. Then we'll take a quick look at Coverages B through F.

What is Coverage A?

Coverage A is also called dwelling coverage. It pays to repair or rebuild the house itself. That includes the walls, roof, floors, windows and foundation. It also covers parts attached to the house, like an attached garage or porch. (SageSure)

Most homeowners policies use a form called the HO-3. It's the most common homeowners policy, and it's the one we'll talk about here.

Next to Coverage A on your policy, you'll see a dollar amount. This is your limit. It's the most the insurance company will pay to rebuild your home, unless you add extra protection. We'll explain that below.

Rebuild cost is not the same as home value

Your Coverage A should match what it would cost to rebuild your home today. It should not match what you paid for your home or what it would sell for.

• Land is not part of it. Your land doesn't burn down, so you don't insure it.

• Building costs are. Workers, wood, roofing, permits and cleanup all add up.

Rebuild costs can jump fast after a disaster. When many homes burn at the same time, lots of people need builders and supplies all at once. After the January 2025 Los Angeles fires, the cost to rebuild was already estimated at about $40 billion for more than 12,000 buildings. (CNBC via NBC)

This is why many families come up short. United Policyholders found that about two out of three people rebuilding after California wildfires didn't have enough coverage. Many were short by $100,000 or more. (United Policyholders)

What is extended replacement cost?

Extended replacement cost is an add-on (insurance companies call it an endorsement). It gives you extra money above your Coverage A limit if rebuilding costs more than you planned.

California law spells this out. The state's official disclosure form says extended replacement cost “provides additional coverage above the dwelling limits,” up to a set percentage or dollar amount. (California Insurance Code §10102)

The extra amount depends on the insurance company. Some offer 25% or 50% more. Some offer a full 100% more, which doubles the money you can use to rebuild.

Example: $500,000 Coverage A with a 100% add-on

• Coverage A limit: $500,000

• Extended replacement cost: +100% (another $500,000)

• Total you can use to rebuild: up to $1,000,000

Here's the important part: the insurance company pays what it really costs to rebuild your home, up to $1,000,000. It is not a bonus check. It's a safety cushion that's there if you need it.

• Rebuild costs $480,000? Your regular $500,000 Coverage A handles it.

• Rebuild costs $650,000? The add-on covers the extra $150,000.

• Rebuild costs $900,000 after a big wildfire? You're still covered, because you have up to $1,000,000.

Without the add-on, you would have to pay that $150,000 or $400,000 yourself. (Your deductible still applies either way.)

Why the extra cushion helps

• Prices go up after disasters. Builders and supplies cost more when a whole area is rebuilding at once.

• Surprises happen. Builders often find problems once work starts.

• Estimates can be off. Even a careful rebuild estimate can end up too low.

• Peace of mind. You know you have room to rebuild the home you had.

Good to know

• Start with the right Coverage A. The add-on is a cushion. It doesn't fix a limit that was way too low to begin with.

• You usually have to rebuild. Many policies only pay the extra amount when you actually repair or rebuild your home.

• Every policy is different. The percentage and rules depend on the company, so check your policy or ask us.

• Code upgrades are separate. Rebuilding to newer building codes is usually covered by a different add-on called ordinance or law coverage.

You may also hear about guaranteed replacement cost. This pays the full cost to rebuild, even if it's more than your Coverage A limit. (California Insurance Code §10102) It's harder to find, so ask us whether it's an option for your home.

A quick look at Coverages B through F

Coverage A protects your house. The other parts of an HO-3 policy protect everything else. The percentages below are common, but your policy may be different. (Washington Insurance Commissioner, SageSure)

• Coverage B – Other structures: fences, sheds and detached garages. Often about 10% of Coverage A.

• Coverage C – Personal property: your belongings, like furniture, clothes and electronics. Usually 50% to 70% of Coverage A.

• Coverage D – Loss of use: hotel or rent, plus extra living costs while you can't live at home. Often about 20% of Coverage A.

• Coverage E – Personal liability: helps if someone gets hurt at your home or you damage their things and they sue you.

• Coverage F – Medical payments: pays small medical bills if a guest gets hurt at your home, no matter whose fault it was.

Because B, C and D are often set as a percent of Coverage A, getting Coverage A right helps the rest of your policy too.

How to check your Coverage A in 3 steps

1. Find your declarations page. This is the summary page of your policy. Look for Coverage A and any line that says “extended replacement cost” or “additional dwelling coverage.”

2. Check it against today's rebuild cost. Ask us for a rebuild estimate. It's based on your home's size, materials and features.

3. Ask about the add-on. See if your company offers extended replacement cost, how much extra it gives you, and what it costs.

We're here to help

AEC Insurance Services is a family-run broker in Thousand Oaks, serving clients since 1991. Send us your declarations page, and we'll check your Coverage A and show you your options in plain English. Call 805.328.5001 or get a free home insurance quote.

Sources

• California Insurance Code §10102 – Residential Property Insurance Disclosure

• United Policyholders – High rates of under-insurance making rebuild difficult (2019)

• CNBC via NBC – What a long rebuilding process will look like for Los Angeles homeowners (Jan. 2025)

• Washington State Office of the Insurance Commissioner – Homeowner insurance guide (2025)

• SageSure – Coverages defined: Understanding your homeowners insurance

This article is for general education only. Your policy's exact wording decides what is covered. Talk with a licensed agent about your own home.