Dwelling coverage — Coverage A — should equal the full cost to rebuild your home at today's construction prices, not what you paid for it and not what Zillow says it's worth. The fast estimate is square footage times your local rebuild rate: a standard 2,000-square-foot home needs about $290,000 in the South, $310,000 in the Midwest, and $490,000 in a West Coast metro. Here's how the number is built, why it keeps creeping up at renewal, and the coverage mistakes that cost people the most after a total loss.
This is the distinction the whole subject turns on. Market value bundles the land, the neighborhood, school districts, and market mood. Rebuild cost is strictly construction: demolition and debris removal, framing, roofing, windows, mechanicals, finishes, contractor overhead, and profit — plus the surge pricing that follows a disaster. Your Coverage A needs to match the second number.
The two can diverge wildly in either direction. In expensive coastal metros, a $900,000 house might carry $450,000 of dwelling coverage because the dirt is most of the value. In a rural county with modest home prices but scarce contractors, the rebuild estimate can exceed what the house would sell for. Neither situation is wrong — they're just measuring different things.
Insurers price from commercial replacement-cost datasets (Verisk and Marshall & Swift are the standard sources) with city-level precision. For a planning estimate, multiply your above-grade square footage by a regional rebuild rate:
| Region | Typical rebuild $/sq ft (2025) | 2,000 sq ft |
|---|---|---|
| South (TX, GA, TN, FL inland) | $120 – $170 | $240k – $340k |
| Midwest (OH, IL, MI, MO) | $135 – $180 | $270k – $360k |
| Mountain West (CO, AZ, UT, ID) | $145 – $195 | $290k – $390k |
| Northeast & Mid-Atlantic | $170 – $240 | $340k – $480k |
| West Coast metros | $200 – $290 | $400k – $580k |
For context, the national average cost to build runs about $162 per square foot per NAHB data, before regional labor and finish differences. Adjust for finish level — roughly 15% down for production-economy homes, 25% up for custom builds — and for hazard-zone construction (wind-rated roofs, defensible-space materials) where local codes require it.
Enter your square footage, region, and finish level — get an estimated dwelling limit, other-structures allowance, and extended-replacement ceiling.
Dwelling Coverage Calculator →Most homeowners policies carry a coinsurance clause: to get full replacement payment on even a partial loss, you must carry at least 80% of the home's replacement cost. Drop below that threshold and the insurer prorates every claim. Say your home's true rebuild cost is $400,000, you carry $240,000 (60%), and a kitchen fire does $50,000 of damage. The penalty formula cuts your payout to $37,500 — a $12,500 haircut on a claim you thought was covered, on top of the deductible.
That's why agents flinch when clients ask to lower Coverage A to trim premium. The levers that actually save money without creating that trap: a higher deductible, bundling, claims-free discounts, and shopping carriers — not thinner limits.
After a wildfire or hurricane hits a few hundred homes at once, contractor bids jump — everyone needs a roofer the same month. Extended replacement cost adds 25% or 50% above your dwelling limit precisely for that scenario, usually for a small premium increase. On a $290,000 dwelling limit, 25% extended replacement means the insurer will pay up to $362,500 to rebuild. Given how far construction costs have moved in recent years, most agents now treat it as standard advice rather than an upsell.
Nearly every policy carries an inflation-guard endorsement that indexes Coverage A to construction costs each year — and those costs rose steeply through the early 2020s. Some insurers also periodically re-run their replacement-cost models and re-set the limit in a jump. Rising Coverage A isn't the insurer padding the bill; it's the rebuild budget tracking the market. The check worth running: compare your policy's Coverage A against a fresh estimate (the calculator above), and if the gap is more than about 10% in either direction, call your agent. Overinsured wastes premium every month; underinsured is catastrophic exactly once.
No. Coverage A should match rebuild cost, which excludes land and reflects construction expenses. In pricey metros, rebuild cost often runs well below market value — a $900,000 California bungalow might rebuild for $450,000. In cheap-housing, high-labor-cost areas the reverse can happen. Insurers set the limit from construction data, never from the sale price.
Most policies require you to insure the home to at least 80% of its replacement cost to receive full replacement-value payment on a partial loss. Fall below that threshold and the insurer prorates your payout — on a $100,000 claim with 60% coverage, you might collect only three-quarters of it. The practical lesson: don't shave Coverage A to save premium.
The endorsement typically costs a few percent of your premium and adds 25% or 50% above the dwelling limit. On a $300,000 policy with 25% extended replacement, the insurer pays up to $375,000. It exists because post-disaster construction demand — a wildfire or hurricane hitting hundreds of homes at once — reliably inflates contractor and material prices.
Finished basement space is covered, but most insurers value it differently from above-grade square footage, and estimating tools that use above-grade footage can overshoot or undershoot it. Walk-out basements, finished rec rooms, and specialized buildouts deserve a conversation with your agent rather than a square-foot rule of thumb.
Because the two numbers measure different things. Purchase price reflects the whole property including land and market conditions at the time you bought; rebuild cost reflects what a contractor would charge today — and construction costs rose sharply in recent years. If you bought years ago, or in a soft market, the rebuild estimate easily exceeds what you paid.