Standard property policies cover a list of named risks. The trouble usually sits in the exclusions.

Water is the classic gap

Flood damage is typically excluded from standard homeowner cover and needs a separate policy. Sewer backup is often another add-on.

Valuables have sub-limits

Jewellery, instruments and electronics can be capped well below the overall limit. Scheduling specific items fixes it.

Liability is often too low

Default liability limits can be small relative to a serious claim. Raising the limit, or adding umbrella cover, is usually inexpensive.