Home insurance: 5 things that affect your premium

Home insurance premiums vary wildly — two identical houses two ZIPs apart can pay 2x different rates. Here are the five biggest factors carriers use to price your policy, ranked by how much they typically move your premium.

1. Location (ZIP code and catastrophe exposure) — biggest factor

Where your home sits is the #1 driver of price. Carriers price based on:

• Catastrophe exposure (hurricane, wildfire, hail, tornado, earthquake)
• Crime rates by ZIP
• Proximity to a fire station and a hydrant
• Coastal proximity (within 1 mile of saltwater dramatically raises premium)

Homes in coastal Florida, wildfire-prone California, or Tornado Alley Texas can pay 3–5x what an identical home in Ohio pays. There's not much you can do about ZIP except move — but if you're buying, factor insurance into your true cost of homeownership.

2. Dwelling coverage limit (replacement cost)

This is the amount it would cost to fully rebuild your home from scratch — not the market value. Carriers calculate this from square footage, construction type, finishes, and local labor and material costs.

Many homeowners are underinsured here. If your dwelling limit is too low, a total loss may not pay enough to rebuild. If it's too high, you're overpaying every year. Get a fresh replacement-cost estimate every 3–5 years, especially after big renovations or local cost-of-construction shifts.

3. Roof age and condition

Roof claims drive most home insurance losses. If your roof is older than 15 years (asphalt shingle) or 20 years (metal/tile), carriers charge significantly more — or refuse to cover certain perils like wind and hail.

Replacing an aging roof before re-shopping your policy can cut your premium 15–30%. It also unlocks "impact-resistant roof" discounts in many states (TX, OK, CO especially). If you're due for a roof, time it before your renewal.

4. Credit-based insurance score

In most states, carriers use a variation of your credit score to price home insurance. Moving from "fair" credit to "good" credit can save 20–40% — bigger than almost any other lever you control.

States that ban credit use in home insurance pricing: California, Maryland (partially), Massachusetts, Michigan. Everywhere else, working on your credit pays real dividends on insurance.

5. Claims history (yours and the property's)

Carriers pull your CLUE report (Comprehensive Loss Underwriting Exchange) — 5–7 years of claim history both on you and on the address. Even a small claim ($2K water-damage repair) can raise your premium 10–20% for the next 3–5 years.

Practical rule: don't file claims under about 2x your deductible. Pay smaller losses out of pocket. Your premium savings over 5 years almost always exceeds the small claim.

What also matters (but matters less)

• Home age and electrical/plumbing. Old knob-and-tube wiring, galvanized pipes, or fuse boxes can cause carriers to refuse coverage entirely.
• Pool, trampoline, certain dog breeds. Liability risk drivers. May require an "attractive nuisance" rider.
• Security and safety devices. Monitored alarm, smart leak detectors, central station fire alarm — typically 5–15% discount each.
• Deductible. Higher deductibles drop premium. Watch for separate hurricane and wind/hail deductibles in coastal areas — they're percentage-based and can be five figures.

The single best move: re-shop

Home carriers raise prices aggressively at renewal — sometimes 15–25% in a year even with no claims. Re-shopping every 1–2 years is essential. We've seen identical coverage from a different carrier come in 25–40% cheaper.