Mold, Insurance And Removal Costs In Delaware
Delaware has 3 counties and 63 ZIP code neighborhoods on this guide. At the statewide price level a typical professional mold job runs about $1,500 to $6,000 before rebuild.
1986Median year homes were built
43%Homes built before 1980
28%Homes rented, not owned
$326,800Median home value
457,958Housing units
1,005,872People
Half the homes in Delaware were built before 1986, and 43 percent went up before 1980. Older plumbing, roofs and window seals are where slow leaks start, and slow leaks are the mold most home policies leave out.
The counties with the oldest housing are New Castle County (1975), Kent County (1993), Sussex County (1999).
FEMA rates inland flooding high in 1 of 3 Delaware counties, and coastal flooding high in 2. Source FEMA National Risk Index, December 2025.
Delaware Rules On Mold
Delaware Mold And Insurance Rules
- Slow leaks around a tub can soak walls or floors, and that damage is often not covered. Delaware DOI Consumer Alert
- The Insurance Department warns that any water soaked into carpet or walls can lead to mold. Delaware DOI Consumer Alert
- The state health department does not usually advise mold testing. Some insurers may ask for samples, case by case. Delaware DPH Mold In Your Home
Every Delaware County
| County | ZIP Codes | Median Year Built | Typical Job Up To | Inland Flood Risk |
|---|---|---|---|---|
| Kent County | 16 | 1993 | $5,850 | Relatively Moderate |
| New Castle County | 25 | 1975 | $6,150 | Relatively High |
| Sussex County | 22 | 1999 | $6,000 | Relatively Moderate |