What Does a Home Insurance Underwriter Look For?
The home's age, roof, electrical and plumbing systems, claims history, and how much it would cost to rebuild.
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An underwriter is deciding whether the house is a reasonable risk and what it would cost to rebuild it, not what you paid for it. They'll look at the roof's age and condition first, since a roof near the end of its life is a common reason for a higher price or a request for repairs before the policy starts. Older wiring, like knob-and-tube, or old plumbing can trigger the same thing. Before closing, ask the seller's agent for the roof's age and any system updates, so there are no surprises when the binder is requested.
Two insurers can look at the same roof and wiring and land on different prices, because each weighs those risks its own way. One might ask for repairs before binding. Another might not. Since the lender just needs proof of coverage by closing, checking what different companies quote for this specific house is worth the few minutes it takes, before one price becomes the only one you've seen.
What else goes into the underwriter's decision
Underwriters also look at the house's claims history, even from before the current owner bought it. This comes from a database insurers share, called CLUE, which tracks past claims tied to the address, not just the person. A house with several water damage or liability claims in the last five to seven years can be harder to insure or cost more to insure, regardless of who owned it when those claims happened. Asking the seller for a CLUE report, or asking the agent to pull one, gives you the same information the underwriter will see before you apply.
Location matters as much as the structure itself. An underwriter checks how far the house sits from a fire hydrant and a fire station, whether the area has a history of wildfire, hail or hurricane exposure, and whether the property sits in a flood zone. None of this is about the house's condition, it's about what the surrounding area tends to cost insurers in claims. A well-maintained house in a high-risk area can still come with a higher price or exclusions than the same house somewhere else.
Dogs and pools come up too, though they carry less weight than the roof or the wiring. Certain dog breeds and the presence of a trampoline or pool without a fence can affect liability pricing, since these raise the chance of an injury claim. It's a smaller factor, but worth mentioning upfront on an application rather than having it surface later and delay the binder you need for closing.
Underwriters also decide how much it would cost to rebuild the house from the ground up, using the home's square footage, materials and local construction costs, not the sale price or the mortgage amount. This number becomes the dwelling coverage, the amount the policy pays out to rebuild if the house is a total loss. If that figure looks low or high compared to what similar homes in the area cost to rebuild, it's worth asking the insurer how they arrived at it before the policy is in place.
What happens if the underwriter says no
Sometimes the answer isn't a higher price, it's a decline. An underwriter can turn down a house outright if the roof has only a few years of life left, if there's active damage like a sagging roofline or signs of water intrusion, or if the claims history is heavy enough that the company doesn't want the risk at any price. This isn't personal and it isn't about your credit or your finances. It's about the structure in front of them on that day.
A decline from one insurer doesn't mean every insurer will decline. Each company sets its own appetite for risk, and some specialize in older homes, homes with older roofs, or homes in areas others avoid. This is part of why getting more than one quote matters even more when a house has something that could raise questions, a 20-year-old roof, a prior claim, a wood stove. The house that gets declined or surcharged by one insurer may be written at a standard price by another.
If an insurer asks for repairs before binding coverage, like replacing a roof or updating an electrical panel, that request usually comes with a deadline tied to your closing date. It helps to find out early whether the repair is something the seller will handle before closing or something you'll need to do right after. Either way, the binder your lender needs can usually still be issued once the insurer confirms the repair is scheduled or completed, so this doesn't have to mean missing your closing date, it just means one more call to make.
None of this is predictable from the outside, which is the point of applying with more than one company rather than assuming the first quote reflects what every insurer would say. A roof that triggers a surcharge at one company might be a non-issue at another. Getting that answer before closing, rather than after, is what keeps the binder on schedule.
Before you apply
Pull the roof's age, any system updates, and a CLUE report on the house now. Having those on hand when you request quotes helps each insurer price the house accurately the first time.
