What Does Flood Insurance Cover That Homeowners Does Not

Updated June 2026
Flood insurance covers direct physical damage to your home and belongings caused by external flooding, a peril that homeowners insurance excludes entirely. Building coverage protects your structure, foundation, electrical and plumbing systems, HVAC equipment, and permanently installed features. Contents coverage protects personal property like furniture, clothing, and electronics. Homeowners insurance covers internal water damage from burst pipes and appliance leaks, but it will not pay a single dollar toward damage caused by floodwater entering your home from outside.

What Building Coverage Includes

NFIP building coverage protects the physical structure of your home and its permanently installed systems. The coverage extends to the foundation, walls, floors, ceilings, insulation, staircases, and all structural components that make up the building. Electrical wiring and systems, plumbing systems and fixtures, central air conditioning equipment and ductwork, furnaces and water heaters, built-in appliances like dishwashers, permanently installed carpeting over unfinished flooring, and built-in cabinets and bookcases are all covered.

Building coverage also includes detached garages on the same property, fuel tanks and the fuel in them, solar energy equipment, well water tanks and pumps, and foundation walls, anchorage systems, and staircases. Window blinds, wall-to-wall carpeting, and paneling are covered as building items rather than contents because they are permanently attached to the structure.

The maximum NFIP building coverage for a single-family residential property is $250,000. For owner-occupied single-family homes, building claims are paid on a replacement cost basis, meaning the insurer pays to repair or replace the damaged components with materials of like kind and quality without deducting for depreciation. This is a significant advantage over contents coverage, which uses actual cash value and does deduct depreciation.

Building coverage under the NFIP does not require a separate deductible from contents coverage. You choose a single deductible when purchasing your policy, and it applies to the combined building and contents claim. Deductible options range from $1,000 to $10,000, with higher deductibles producing lower annual premiums.

What Contents Coverage Includes

Contents coverage protects your personal belongings inside the insured building. This includes clothing, furniture, electronic equipment like televisions and computers, portable appliances like microwaves and toasters, curtains, area rugs and carpets not permanently installed, washers and dryers, food freezers and the food in them, and valuable items like artwork up to $2,500 per item.

Contents coverage is purchased separately from building coverage and is optional. Many homeowners skip contents coverage to save on premiums, which is a risky decision. The average American home contains $50,000 to $100,000 worth of personal property, and a significant flood event can destroy most or all of it. Replacing clothing, furniture, electronics, kitchen items, and personal belongings without insurance is an enormous financial burden.

NFIP contents coverage maxes out at $100,000 and uses actual cash value rather than replacement cost. Actual cash value means the insurer deducts depreciation from the claim payment, so a five-year-old television worth $1,200 new might pay out at $400 after depreciation. This distinction matters significantly for items like electronics, appliances, and furniture that lose value quickly. Some private flood insurers offer replacement cost contents coverage, which pays the full cost to replace damaged items with new equivalents.

What Homeowners Insurance Covers Instead

Homeowners insurance covers water damage from internal sources that are sudden and accidental. A burst pipe that floods your kitchen, a washing machine hose that fails and soaks your laundry room, an overflowing bathtub that damages the ceiling below, or an ice dam that forces water through your roof are all covered by standard homeowners insurance because the water source is internal to the home and the damage was not caused by flooding as FEMA defines it.

The key distinction is the source of the water. If water enters your home from outside due to rising floodwaters, overflowing rivers, storm surge, or surface water accumulation, that is flood damage and homeowners insurance excludes it. If water originates from inside your home due to a plumbing failure, appliance malfunction, or roofing issue, that is water damage and homeowners insurance covers it. The practical difference can be confusing during a storm event where both internal and external water damage occurs simultaneously.

Homeowners insurance also covers additional living expenses when your home is uninhabitable due to a covered loss. If a burst pipe renders your home unlivable during repairs, your homeowners policy pays for hotel costs, meals, and related expenses. Flood insurance through the NFIP does not include this coverage, which is one of the areas where private flood policies sometimes offer better terms.

Wind damage during a hurricane is another area where the two policies intersect but do not overlap. Homeowners insurance covers wind damage to your roof, siding, and windows. Flood insurance covers water damage from storm surge and flooding. During a hurricane, both types of damage often occur to the same home, and determining which policy covers which damage can become a complex dispute. The general rule is that damage from water rising from the ground up is flood damage, while damage from water driven by wind through a damaged roof is wind damage covered by homeowners insurance.

Does homeowners insurance cover any flood damage?
No. Standard homeowners insurance policies contain a specific flood exclusion that eliminates coverage for damage caused by flooding, which includes overflow of inland or tidal waters, unusual or rapid accumulation of surface water, mudflow, and collapse of land along a body of water. This exclusion is universal across all standard homeowners policies and cannot be removed by endorsement. The only way to insure your home against flood damage is through a separate flood insurance policy from the NFIP or a private insurer.
Does flood insurance cover sewer backup?
Only if the sewer backup is a direct result of flooding as FEMA defines it. If floodwaters overwhelm the municipal sewer system and cause sewage to back up into your home through floor drains, that damage is covered by flood insurance. If sewer backup occurs due to a blockage in your lateral line, tree root intrusion, or a municipal system failure unrelated to flooding, it is not covered by either flood insurance or standard homeowners insurance. A separate sewer backup endorsement on your homeowners policy covers that scenario.
What about mold from flood damage?
Flood insurance covers mold removal only if the mold resulted directly from the covered flood event and you took reasonable steps to prevent mold growth after the flood. If you left standing water in your home for weeks without beginning cleanup, the insurer can argue that the mold damage was preventable and reduce or deny that portion of the claim. Prompt water extraction and drying within 24 to 48 hours of the flood is both a practical necessity and a claims preservation strategy. See our guide on flood insurance and mold coverage for details.

What Neither Policy Covers

Several types of damage fall outside both flood insurance and homeowners insurance. Damage to landscaping, trees, shrubs, and plants is not covered by flood insurance and is only minimally covered by homeowners insurance (typically limited to $500 per tree for non-flood perils). Swimming pools, hot tubs, fences, retaining walls, driveways, and patios are not covered by flood insurance, though some may be partially covered by homeowners insurance for non-flood damage.

Vehicles are not covered by either flood insurance or homeowners insurance. Flood damage to cars, trucks, and motorcycles is covered by the comprehensive portion of an auto insurance policy. Currency, precious metals, and stock certificates above $2,500 are not fully covered by NFIP contents coverage. Valuable items like jewelry, furs, and collectibles may be partially covered but are subject to per-item limits that may fall well below their actual value.

Additional living expenses during displacement are not covered by NFIP flood insurance, which is a significant gap for homeowners who must relocate during flood repairs that can take weeks or months. Homeowners insurance covers additional living expenses for covered losses, and some private flood insurers include this coverage in their policies. For homeowners relying solely on NFIP coverage, the cost of temporary housing during flood repairs is an out-of-pocket expense.

Key Takeaway

Flood insurance and homeowners insurance cover different types of water damage with no overlap. Homeowners insurance handles internal water damage from pipes and appliances. Flood insurance handles external floodwater damage. You need both policies for complete water damage protection, and skipping flood insurance leaves you fully exposed to the most expensive category of natural disaster damage in the country.