An HO-8 is the homeowners form designed for older homes that would cost far more to rebuild than they're worth on the market. It keeps these homes insurable when a standard policy doesn't quite fit.
Who this is for: owners of older or historic homes, especially ones with plaster walls, ornate woodwork, or other construction that modern builders rarely replicate.
The problem it solves
Standard homeowners policies are built around replacement cost: insuring the home for what it would take to rebuild it as it stands. For many older homes, that math breaks down. Reproducing hand-carved trim, plaster-and-lath walls, or period masonry can cost several times what the home would sell for. Insurers are reluctant to write a policy where the payout ceiling towers over the market value, and owners understandably balk at premiums priced on an enormous rebuild number. The HO-8, sometimes called the modified coverage form, is the compromise.
What "repair cost basis" means
Instead of promising to recreate the original, an HO-8 typically pays to repair or rebuild using common construction materials and methods in use today. Plaster walls come back as drywall; custom millwork comes back as standard trim. You end up with a functional, livable home, not a museum-grade restoration. This approach is often called functional replacement cost, and it's the defining feature of the form. Claims may also be settled at actual cash value, depending on the policy, so it's worth asking exactly how your insurer handles it.
What an HO-8 covers
The structure follows the familiar homeowners package: dwelling, other structures, personal property, loss of use, liability, and medical payments. But the causes of loss are narrower than an HO-3. An HO-8 is a named-perils policy, generally covering a basic list similar to the old HO-1: fire, lightning, windstorm, hail, explosion, riot, aircraft, vehicles, smoke, vandalism, theft, and volcanic eruption. Theft coverage is often more limited than on other forms.
What it doesn't cover
Anything outside the named list, plus the standard exclusions like flood and earthquake. The broad-form water perils, such as accidental discharge from plumbing, are typically not included, which matters in a house with older pipes. If those gaps concern you, ask whether the home could qualify for an HO-3 with a functional replacement cost endorsement instead; some carriers offer that middle path.
When it applies
An HO-8 usually enters the picture when an insurer declines to write a standard form because the replacement cost far exceeds market value, or because the home's age and construction fall outside their underwriting rules. It's a purpose-built tool, not a downgrade to be embarrassed about: it keeps a beloved older home protected at a workable price.
Carriers differ a lot in how they handle older homes, so comparing a few quotes is often the fastest way to learn what forms your house qualifies for.