“How much homeowners insurance do I need?” really means: how do I size each coverage so I’m fully protected without overpaying? The anchor is your dwelling coverage, and it should equal your home’s replacement cost.
Start with replacement cost, not market value
Replacement cost is what it costs to rebuild your home with similar materials at today’s local prices. Market value is what a buyer would pay — it includes the land, which can’t burn down and isn’t insurable. Using market value (or your mortgage balance) to set coverage commonly leaves you wrong in either direction. Read the full breakdown in replacement cost vs market value.
Rules of thumb for each coverage
Once dwelling coverage (Coverage A) is set to replacement cost, the others usually scale from it:
| Coverage | What it’s for | Typical setting |
|---|---|---|
| A — Dwelling | Rebuild the home | 100% of replacement cost |
| B — Other structures | Detached garage, fence, shed | ~10% of dwelling |
| C — Personal property | Belongings | ~50–70% of dwelling |
| D — Loss of use | Living costs while displaced | ~20–30% of dwelling |
| E — Personal liability | Injury/damage you cause | $300k–$500k+ |
| F — Medical payments | Guest medical bills | $1,000–$5,000 |
See exactly what each HO-3 coverage does.
Watch the 80% coinsurance rule
Most policies require you to insure the dwelling to at least about 80% of replacement cost. Carry less and the insurer can apply a coinsurance penalty, cutting a partial-loss payment proportionally. Aim for 100%, ideally with an extended or guaranteed replacement-cost endorsement that pays above your limit if rebuilding costs spike after a disaster.
Don’t forget the gaps
Standard HO-3 excludes flood and earthquake — buy those separately if you’re exposed. Add sewer/water backup and ordinance-or-law coverage where relevant, and schedule high-value items (jewelry, art) that exceed sub-limits.
Then estimate a ballpark premium with the premium estimator, and check your state average for context.
General information, not advice or a quote. Coverage needs vary by home, state and insurer. Confirm your replacement cost and limits with a licensed insurer and your state insurance department.