Home insurance cost drivers behind the two numbers
What differs underneath when the premiums differ on top.
Compare home insurance: two offers, one house
A home insurance comparison is six fields wide: dwelling limit, form number, deductible structure, roof loss settlement, endorsements, exclusions. A cheaper quote is usually a different policy rather than a better price for the same one.
Two quotes come back on the same house, a few hundred dollars apart, and neither sheet says why. Start at the deductible, which moves the most money for the least visible reason. A flat deductible is a number the household pays. A percentage deductible is computed from the dwelling limit: in the 2026 homeowners data call, a maximum percentage of the total Coverage A amount, never a percentage of the damage. One storm, two arithmetic problems.
Six fields hold nearly all the difference between two offers, and they are not equally visible. Two sit on the front page. Two are form numbers most readers skim. Two live in wording nobody reads until a claim.
| Line on the page | First quote | Second quote |
|---|---|---|
| Dwelling limit, Coverage A | From a reconstruction estimate | Carried across from the expiring policy |
| Policy form | HO-3: open peril on the building, named perils on contents | HO-5: open peril on both halves |
| Deductible structure | One flat amount, all perils | Flat, plus a percentage of Coverage A on wind and hail |
| Roof loss settlement | Replacement cost, all perils | Actual cash value on wind and hail past a stated age |
| Endorsements listed | Water backup, scheduled jewelry, increased ordinance or law | None listed |
| Exclusions bought back | Three, by endorsement | None |
The difference between those two forms is one thing: whether contents sit on the open-peril footing with the building, or on the closed list of sixteen named perils carried by both the 2011 and 2022 editions.
A policy can read replacement cost on its face and still pay the roof depreciated. This is tracked, not rumored. The 2026 data call counts replacement cost on the roof separately from actual cash value on the roof, and its worked example is wind and hail damage. The same call counts cosmetic-damage exclusions and roof payment schedules keyed to age and material. In one filed endorsement dated August 2023, the depreciation reached labor as well as materials. No national age threshold exists, so the question on the phone is what this policy sets.
Two offers rarely differ on the exclusion list. Both the May 2011 and the March 2022 editions of the standard form carry nine, introduced by language that removes the loss if an excluded cause sits anywhere in the chain. What differs is which of them has been bought back, and every buy-back is a form number on the declarations page.
Scheduling an item changes the peril gate, not just the limit: in the standard form, articles separately described and specifically insured leave the contents pool altogether, and the theft cap on jewelry, watches and furs stood at $1,500 in the May 2011 edition and $2,000 in March 2022. Ordinance or law appears twice in one policy, as an exclusion and as a built-in ten percent of the dwelling limit in the 2011 and 2022 editions; the endorsement raising it does the real work on an old house.
The declarations page is the summary sheet at the front of a live policy: coverage letters and limits, deductibles including any percentage ones, forms and endorsements by number, premium, discounts already applied. The 2023 regulator shopping guide tells shoppers to give every company the same coverages, limits and information. From memory that is not possible. The dwelling limit is not a preference either: in the 2011 and 2022 editions of the standard form, replacement cost applies only if the building is insured to at least eighty percent of full replacement cost, and the shortfall lands on partial losses.
Neither offer is priced only from what the household said on the phone. The Comprehensive Loss Underwriting Exchange, or CLUE, is the loss-history record kept by the consumer reporting agency LexisNexis, and a state regulator fact sheet revised May 2026 sets out a homeowner's standing in it. Under the federal FACT Act you are entitled to one copy of your own report every 12 months on request. An entry you believe wrong goes back through the reporting agency, which takes it to the insurer that filed it and reports the outcome within 30 days.
A web estimate does rating. Rating sets the premium charged; underwriting decides whether the household is eligible at all, a division restated on an NAIC topic page updated in March 2026. Arithmetic is what a screen does well. A roof past a certain age, a wood stove, water claims behind the address: those are judgments against filed underwriting rules, not lookups.
The first is whether a company will write the risk at all. The second is which endorsements come attached, and that list decides five of the six fields. A screen returns a number for a policy nobody has agreed to issue.
A grid sorted by price shows one field of six and hides the rest. That is not an argument against looking. This site runs no comparison engine: the comparison described here is the one performed at a table, with two declarations pages and a pen.
What differs underneath when the premiums differ on top.
What to test once the prices are side by side.
The order of operations that avoids a lapse.
Admitted or not, group or entity, and why it matters.
Why proximity does almost nothing in this product.
Which answers move the premium and which only make the record travel.
The deductible line, then the roof settlement line, then the endorsement form numbers. Those three carry most of the difference between offers that look alike on the front page.
The count matters less than whether the sheets can be set against each other. Two quotes on one dwelling limit, one deductible structure and one form number tell you something; four on four sets of assumptions tell you nothing. The 2023 regulator shopping guide says to hold coverages, limits and information identical across companies.
A condition inside the loss settlement clause, not a law. In the 2011 and 2022 editions of the standard form, replacement cost on the building holds only while the dwelling limit stands at 80% or more of full replacement cost at the time of loss. Below that mark the payment drops to the greater of actual cash value or a proportional share, and it bites on partial losses.
Yes. A policy can be replacement cost overall and actual cash value on the roof for wind and hail; the 2026 data call has insurers report it in the actual-cash-value column.
The instrument is a credit-based insurance score, which a regulator topic page updated 19 March 2026 calls an estimate of how likely someone is to file a claim rather than of how likely they are to repay a loan. It is not the score a mortgage lender reads, and it works on eligibility first, then the premium.
For a price, no. For a comparison, yes: the deductible structure and endorsement list of what you own now are printed there and nowhere else.
Sources and data years
Page last reviewed 2026-09-23. Each figure above carries the year of its own data.