South · 58 covered cities and towns
Plumbers in Delaware
We connect Delaware homeowners with independent, licensed plumbers in 58 cities and towns across 98 ZIP codes. Low, flat coastal ground means sump pumps, backwater valves and good yard drainage matter in many neighborhoods.
- Regular winter freezes
- Generally moderate water
Plumbing in Delaware: what's different
- Low, flat coastal ground means sump pumps, backwater valves and good yard drainage matter in many neighborhoods.
- Winter cold is seasonal rather than severe, but pipes in crawl spaces and exterior walls still freeze during hard cold snaps.
- Licensing
- Delaware's Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners licenses plumbers.
- Winters
- Regular winter freezes.
- Water hardness
- Generally moderate. Check your utility's annual water quality report for your system.
- Home heating
- 42% utility gas, 37% electric, 9% fuel oil, 9% propane (Census ACS).
| Year built | Share of homes |
|---|---|
| Before 1940 | 8% |
| 1940–1959 | 13% |
| 1960–1979 | 21% |
| 1980–1999 | 26% |
| 2000 or later | 32% |
Share of housing units, Census ACS 2023 5-year estimates.
Local plumbing pages in Delaware
Each page covers the age of local housing, how homes are heated and the problems that follow, based on Census data for the ZIP codes we cover.
Common plumbing work in Delaware
Delaware counties
County pages list every covered town and compare housing age across them.
- Kent County (16)
- New Castle County (14)
- Sussex County (21)
Other Delaware cities and towns we cover
These 56 places are in our network but don't have their own page yet. Call or check your ZIP code to be connected with a plumber.
Kent (16)
Kent plumbing pageCamden Wyoming, Cheswold, Clayton, Dover, Dover Afb, Felton, Frederica, Harrington, Hartly, Houston, Kenton, Little Creek, Magnolia, Smyrna, Viola, Woodside
New Castle (12)
New Castle plumbing pageBear, Brookside, Claymont, Delaware City, Hockessin, Middletown, New Castle, Odessa, Port Penn, Saint Georges, Townsend, Yorklyn
Other areas (7)
Harbeson, Kirkwood, Marydel, Montchanin, Nassau, Rockland, Winterthur
Sussex (21)
Sussex plumbing pageBethany Beach, Bethel, Bridgeville, Dagsboro, Delmar, Ellendale, Fenwick Island, Frankford, Georgetown, Greenwood, Laurel, Lewes, Lincoln, Milford, Millsboro, Millville, Milton, Ocean View, Rehoboth Beach, Seaford, Selbyville
Delaware plumbing FAQ
How do I check a plumber's license in Delaware?
Delaware's Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners licenses plumbers.
Do pipes freeze in Delaware?
Yes, during cold snaps. Pipes in crawl spaces, exterior walls and unheated garages are the ones that freeze. Disconnect hoses in fall and open sink cabinets on the coldest nights.
Is Delaware water hard?
Generally moderate, based on national hardness mapping, but it varies by utility and by well. Your water provider's annual water quality report lists the hardness for your system, and a plumber can test well water.
How old are homes in Delaware?
Census estimates for Delaware put 21% of homes as built before 1960, 21% from 1960 to 1979, 26% from 1980 to 1999 and 32% in 2000 or later. Older homes are more likely to have galvanized supply pipe and cast iron or clay sewer lines.
Sources: coverage from our plumbing network (updated October 2026); housing and heating figures from US Census Bureau American Community Survey 2023 5-year estimates. All states
Need a plumber in Delaware?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.