How Much Homeowners Insurance Do I Actually Need?
The most expensive mistake in homeowners insurance is being underinsured on your dwelling. Here's how to set the right limits — and why your home's market value is the wrong number to start from.
For most families, the home is the single largest asset they'll ever own — and homeowners insurance is the financial backstop that makes recovering from a fire, storm, or lawsuit possible. Yet the most common and most costly mistake homeowners make is being underinsured: carrying a dwelling limit that wouldn't actually rebuild the house at today's construction costs.
Start with replacement cost, not market value
Your home's market value is what a buyer would pay for it — land included. Insurance doesn't rebuild land; it rebuilds structures. The number that matters is replacement cost: what it would cost a contractor to rebuild your home from the foundation up, at current local labor and materials prices.
The six homeowners coverages, decoded
- Dwelling (Coverage A): rebuilds the structure. The anchor of the policy — get this right first.
- Other Structures (Coverage B): detached garages, fences, sheds — typically 10% of dwelling.
- Personal Property (Coverage C): your belongings, usually 50–70% of dwelling. Choose replacement-cost settlement, not actual cash value.
- Loss of Use (Coverage D): hotel and living costs while your home is uninhabitable.
- Personal Liability (Coverage E): defense and damages if someone is injured on your property. Consider $300k–$500k.
- Medical Payments (Coverage F): small no-fault medical bills for injured guests.
How to size your dwelling limit
- 1Get a replacement-cost estimate based on square footage, construction type, and local building costs — not a Zillow estimate.
- 2Add an extended or guaranteed replacement cost endorsement so you're covered if rebuild costs spike after a widespread disaster.
- 3Re-verify the number every renewal. Construction costs have risen sharply; a limit set three years ago may be 20–30% short today.
Don't forget the gaps standard policies leave
Standard homeowners policies exclude flood and earthquake, cap jewelry and collectibles at small sublimits, and pay personal property at actual cash value unless you upgrade. Over 20% of flood claims come from properties outside high-risk zones — worth a separate quote even if you're not in a flood plain.
If your net worth exceeds your liability limits, an umbrella policy adds $1 million or more in protection for roughly a dollar a day — see our guide on umbrella insurance below.
Frequently asked questions
Should my dwelling coverage equal my home's market value?
No. Market value includes the land, which doesn't burn down. Dwelling coverage should equal the cost to rebuild the structure at today's construction prices — which can be higher or lower than market value depending on your area.
What is an 80% coinsurance clause?
Many policies require you to insure your home to at least 80% of its full replacement cost. If you're below that threshold, the insurer can reduce even partial claim payments proportionally. Insuring to full replacement cost avoids the penalty.