Home Insurance Information: HO-3 Coverages, Endorsements, and Claims
A plain-English reference for every home insurance term, coverage type, claim scenario, and endorsement that affects your premium.
Updated May 21, 2026 · Methodology
Nearly every owner-occupied home in the U.S. is insured on an HO-3 form. It’s an “open peril” policy for the dwelling (everything is covered except what’s specifically excluded) and a “named peril” policy for personal property (only listed perils are covered). This guide walks through what HO-3 actually covers, the standard exclusions, the endorsements worth adding, and how deductibles work.
- HO-3 is open-peril for dwelling, named-peril for personal property.
- Flood and earthquake are NOT covered by standard HO-3. Separate policies required.
- Many CAT-prone states use percentage deductibles (1–5% of dwelling) for wind/hail.
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What HO-3 covers
- Coverage A — Dwelling: structure of your home, attached garage, built-in appliances.
- Coverage B — Other structures: detached garage, shed, fence, pool, driveway.
- Coverage C — Personal property: your belongings (10 named perils).
- Coverage D — Loss of use: hotel, food, incremental living costs while displaced.
- Coverage E — Personal liability: bodily injury + property damage you cause to others.
- Coverage F — Medical payments: small medical bills for guest injuries (no fault required).
Standard HO-3 exclusions to know about
- Flood — separate policy (NFIP or private). Always required for FEMA-designated SFHA zones.
- Earthquake — separate endorsement or standalone. Critical in CA, OR, WA, AK, parts of UT/NV/MO/SC.
- Maintenance / wear and tear — ongoing neglect isn’t covered.
- Sewer / drain backup — available as an endorsement; rarely standard.
- Pest damage — termites, rodents, etc.
- Intentional acts — damage you cause on purpose.
- Government action — ordinance + law expansion required separately.
Deductibles: flat vs. percentage
Most home policies have a flat dollar deductible — $1,000, $2,500, $5,000. In CAT-prone areas you’ll also see percentage deductibles for specific perils:
- Wind/hail deductible — common in TX, OK, KS, NE; usually 1–5% of dwelling.
- Hurricane deductible — FL, LA, TX coast, NC, SC, GA; usually 2–10% of dwelling.
- Wildfire deductible — emerging in CA; 1–10% of dwelling.
- Named-storm deductible — separate trigger for named tropical storms.
On a $500K home, a 5% hurricane deductible is $25,000 out of pocket before the carrier pays a dollar. Worth knowing before a storm season.
| Endorsement | What it covers | Typical cost / yr |
|---|---|---|
| Water / sewer backup | Sump pump failure, drain backup | $50–$150 |
| Scheduled personal property | Jewelry, art, firearms above sub-limit | $30–$100/item |
| Equipment breakdown | HVAC, water heater, electrical panel | $30–$70 |
| Service line | Underground water/sewer line failure | $25–$50 |
| Identity theft | ID restoration costs | $25–$50 |
| Earthquake (CA/OR/WA) | Earthquake damage | $300–$1,200 |
| Flood (NFIP or private) | Flood damage | $400–$2,500 |
- EndorsementWater / sewer backupWhat it coversSump pump failure, drain backupTypical cost / yr$50–$150
- EndorsementScheduled personal propertyWhat it coversJewelry, art, firearms above sub-limitTypical cost / yr$30–$100/item
- EndorsementEquipment breakdownWhat it coversHVAC, water heater, electrical panelTypical cost / yr$30–$70
- EndorsementService lineWhat it coversUnderground water/sewer line failureTypical cost / yr$25–$50
- EndorsementIdentity theftWhat it coversID restoration costsTypical cost / yr$25–$50
- EndorsementEarthquake (CA/OR/WA)What it coversEarthquake damageTypical cost / yr$300–$1,200
- EndorsementFlood (NFIP or private)What it coversFlood damageTypical cost / yr$400–$2,500
What to do at claim time
- Immediate — stop further damage (tarp the roof, shut off the water main).
- Day 1 — file claim via app or 1-800; get claim number.
- Days 2–5 — adjuster visits, scope of loss documented, emergency mitigation paid.
- Weeks 1–4 — contractor estimates, repair authorization, ALE (loss-of-use) reimbursement.
- Months 1–6+ — repairs/rebuild, final payout once work complete (replacement-cost holdback).
Claims process — five steps
- 1Stop damage
Tarp, shut water, document the scene.
- 2File
Within 24 hours via app/1-800. Get claim number.
- 3Adjuster
Inspects, scopes loss, pays mitigation.
- 4Contractor
Estimates approved, repairs begin.
- 5Resolution
Final payment + RC holdback once work complete.
HO-3 vs. HO-5 (upgraded)
- HO-5 is open-peril for personal property too — broader protection.
- HO-5 typically includes replacement cost on personal property by default.
- Better for homes with significant high-value contents.
- Cleaner claim experience — fewer "is this peril named?" disputes.
- HO-5 costs 10–20% more than HO-3.
- Not all carriers write HO-5.
- Overkill for typical home with no high-value scheduled items.
- HO-3 + open-peril endorsements often replicates HO-5 at lower total cost.
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Frequently asked questions
How much home insurance do I need?
What's the difference between HO-3 and HO-5?
Is mold covered?
Are roof leaks covered?
Does my home insurance cover items in my car?
What's a claim-free discount?
Sources
- Insurance Services Office (ISO) — HO-3 Standard Policy Form
- NAIC — Homeowners Insurance Consumer Guidance
- Insurance Information Institute — Home Insurance Topics
Methodology
Coverage definitions follow ISO HO-3 standard policy forms (current edition). Endorsement availability and pricing verified against major-carrier policy forms. Claims-process guidance based on NAIC model regulations.
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