Bathroom remodeling in Wilmington
Cost vs. Value has no Wilmington market; in nearby Philadelphia, a midrange bathroom remodel cost $27,7671 in the 2025 report, against $26,1382 nationally. The bigger local factor is where the house sits: 43%3 of homes inside the City of Wilmington were built before 1940, and the city and New Castle County each run their own permit office.
Calls are recorded. One independent company that handles bathroom remodels in the Wilmington area answers.
Updated October 12, 2026
Bathroom costs from the nearest surveyed city
Cost vs. Value doesn't survey Wilmington. Philadelphia, up the Delaware River in the same metro area, is the closest city it covers, and 2025 is the newest edition.
| Measure | Philadelphia market | U.S. average |
|---|---|---|
| Midrange bathroom remodel, job cost | $27,7671 | $26,1382 |
| Upscale bathroom remodel, job cost | $85,3341 | $81,6122 |
| Universal-design bathroom remodel, job cost | $45,7491 | $42,1832 |
Use these as a reference point for a typical job rather than a bid. In an old city rowhouse, the drain stack and the condition of the floor framing can move the price more than the finishes you pick.
City houses versus county houses
The Census Bureau's counts by year built show two different housing stocks: the city's rowhouse neighborhoods and the suburbs that filled in around them.
| Measure | City of Wilmington | New Castle County |
|---|---|---|
| Homes built before 1940 | 43%3 | 11%3 |
| Homes built before 1980 | 79%3 | 56%3 |
| Homes built 1950–1969 | 18%3 | 27%3 |
In a pre-war city house, the bathroom may be a later addition squeezed into a rear room, with pipes rerouted more than once. In the county's postwar houses it's more likely to be where the builder put it, which makes a remodel that keeps the layout simpler.
Home values in the city and the county
Median value of owner-occupied homes from the same Census survey.
Trade wages across the metro
BLS reports wages for the Philadelphia–Camden–Wilmington metro as a whole, without a separate Delaware figure. Median hourly pay for the trades a bathroom needs:
| Measure | Philadelphia metro | United States |
|---|---|---|
| Plumbers, median hourly wage | $35.99/hr5 | $30.67/hr5 |
| Electricians, median hourly wage | $35.86/hr5 | $30.38/hr5 |
| Carpenters, median hourly wage | $29.70/hr5 | $29.12/hr5 |
| Tile and stone setters, median hourly wage | $34.01/hr5 | $26.77/hr5 |
Pay here runs above the national medians, most of all for tile setters. Inside Wilmington the city also wants its own licensed tradespeople on the job, so ask whether the company's plumber holds a city license.
What the weather does to a Wilmington bath
New Castle County Airport sits just south of the city. Cold nights matter for pipes in outside walls, and humid summer air matters in a room that already makes its own steam.
Hardness in Wilmington city water
Wilmington Water treats water at two plants and reports each plant's average hardness in its annual report. If your water comes from another supplier, its own annual report has the figure.
| Measure | Wilmington city water |
|---|---|
| Water hardness, Brandywine Filter Plant, average | 136 mg/L8 |
| Water hardness, Porter Filter Plant, average | 154 mg/L8 |
The USGS classes water at 61 to 120 mg/L of hardness as moderately hard.9 Both plants average somewhat above that band. Wilmington's water comes mainly from Brandywine Creek, and the city can draw on Hoopes Reservoir as a backup source.10 Expect mineral spots on shower glass and fixtures, so ask about finishes that clean up easily.
Permits
Which office you deal with depends on the address. Inside the City of Wilmington, the Department of Land Use and Planning issues building permits, and the job's value decides who may pull one. Elsewhere in New Castle County, the county's Department of Land Use requires a permit for interior alterations unless the work is on its exempt list, and plumbing goes on its own utility permit. Neither office lists review times on these pages, so build permit time into the schedule.
- New Castle County requires a permit for all construction activity, including interior improvements, alterations and most repairs, unless the County Code specifically exempts the work; if a project isn't on the county's list of exempt work, assume it needs a permit.11
- New Castle County doesn't require a permit for painting, papering, tiling, carpeting, cabinets, countertops and similar finish work, though the work must still meet the building and zoning codes.12
- In New Castle County, clearing a stoppage, repairing a leak, or removing and reinstalling an existing fixture in the same spot needs no permit as long as no valves, pipes or fixtures are replaced or rearranged; replacing a defective concealed pipe counts as new work that needs a permit, and so does installing or replacing a water heater.12
- New Castle County's residential addition and renovation permit covers renovations, and the county issues separate utility permits for plumbing and HVAC work.11
- The City of Wilmington says to get a permit before starting any work; for a job valued at $10,000 or less the owner or an authorized agent can pull it, from $10,001 to $25,000 it takes a city-licensed general contractor, and above $25,000 a city-licensed general contractor with plans sealed by a licensed architect or engineer.13
- Wilmington's building guidelines say to use only tradespeople licensed in the City of Wilmington; the city's Department of Land Use and Planning tests applicants for plumbing, heating, air conditioning and ventilation work.13
- If a Wilmington property is in a city historic district, neighborhood conservation district or urban renewal area, the city may issue permits only for interior work or emergencies without the appropriate review board's approval or recommendation.13
Checked October 12, 2026
Before you hire
Delaware has no general contractor license to ask for, so check that the company shows up on the state's Contractor Registry and that whoever does the electrical, plumbing or HVAC work holds a Delaware license.
Talk to a pro who handles bathroom remodels in Wilmington
Calls are recorded. You'll be connected to one independent company that handles bathroom remodels in your area. We never call or text you. Privacy Policy ·Do Not Sell or Share My Personal Information
Remodeling a bathroom in a Wilmington rowhouse
54%14 of homes in the City of Wilmington are one-unit attached houses, the Census category for rowhouses, and 43%3 were built before 1940. Between shared side walls, a new exhaust duct or drain line has fewer ways out than in a detached house, often only the back wall or the roof.
If a Wilmington property is in a city historic district, neighborhood conservation district or urban renewal area, the city may issue permits only for interior work or emergencies without the appropriate review board's approval or recommendation.13 The bathroom itself is interior work, but a new vent through the front wall or a changed window is not.
The EPA notes that lead can collect inside galvanized pipe and later reach drinking water, and that solder made before 1986 contained high levels of lead.15 The EPA lists vinyl floor tile, vinyl sheet backing and flooring adhesives among products that may contain asbestos, which is released mainly when the material is disturbed.16 The EPA advises having an accredited asbestos professional inspect before a remodel that could disturb suspect materials, and not sanding or power-stripping suspect flooring yourself.17
Bathrooms for aging in place
More than one in four adults 65 and older fall each year.18 The CDC's home fall-prevention checklist recommends grab bars in and beside the tub and next to the toilet, and a non-slip surface on tub and shower floors.19 The National Institute on Aging suggests non-skid surfaces wherever a floor can get wet and a light left on in the bathroom at night.20
A universal-design bath cost $45,7491 in the 2025 Philadelphia figures. Cost vs. Value's universal-design bath job removes the tub for a curbless, tiled walk-in shower with an adjustable showerhead, fold-out seat, thermostatic mixing valve and glass door, puts in a comfort-height toilet with a bidet-type seat, and rearranges storage so it can be reached from a seated position.21 In a narrow rowhouse that can mean borrowing space from a hall or closet, so ask early what the plan would take. NAHB's Certified Aging-in-Place Specialist (CAPS) credential trains remodelers in home modifications for aging in place.22
What happens when you call
Your call to the number on this page is recorded and goes to one independent company that handles bathroom remodels in the Wilmington area. Scope, schedule and price are between you and that company.
We're paid by the company for the call. There's no charge to you from us, and we never call or text you. How we make money
After you're connected
Check the company on the state's own sites before you sign. Delaware's public Contractor Registry lookup lists contractors that properly registered and are considered compliant with Department of Labor laws, searchable by name, ZIP code, certification number, NAICS code or industry; a contractor that drops off the list may not have re-registered, may be under review, or may have been suspended or revoked.23 Contractors working in unincorporated New Castle County must get a New Castle County contractor license, a permit-endorsed license for work that needs a permit, while electrical contractors are licensed by the State; the county's Contractor License Search shows a contractor's license and authorized trades.24 Check a Delaware license
Questions people ask
How much does a bathroom remodel cost in Wilmington?
Cost vs. Value doesn't survey Wilmington, so Philadelphia is the nearest guide: in the 2025 report a midrange bathroom remodel there cost $27,7671 and an upscale one $85,3341. The room's size, whether fixtures move and the state of an old house's plumbing decide your own price.
Do I need a permit to remodel a bathroom in Wilmington?
Inside the city, plan on one. The City of Wilmington says to get a permit before starting any work; for a job valued at $10,000 or less the owner or an authorized agent can pull it, from $10,001 to $25,000 it takes a city-licensed general contractor, and above $25,000 a city-licensed general contractor with plans sealed by a licensed architect or engineer.13 Outside the city, the county's rules apply. New Castle County doesn't require a permit for painting, papering, tiling, carpeting, cabinets, countertops and similar finish work, though the work must still meet the building and zoning codes.12 In New Castle County, clearing a stoppage, repairing a leak, or removing and reinstalling an existing fixture in the same spot needs no permit as long as no valves, pipes or fixtures are replaced or rearranged; replacing a defective concealed pipe counts as new work that needs a permit, and so does installing or replacing a water heater.12
What should a Delaware remodeling contract include?
Delaware's Consumer Protection Unit home improvement regulations, effective November 1, 2023, require a written contract listing all material terms, bar asking homeowners to sign incomplete contracts or calling a binding contract an estimate, require a completion date unless clearly disclosed, and bar getting a certificate of completion before the work is done; contractors must give buyers a copy of the unit's summary of the rules before the contract is signed.25 Under Delaware's home improvement rules, every promise that acts as an express warranty must be in the contract, any warranty limit must be clear, conspicuous and initialed by the homeowner, and a contractor may not lead the homeowner to think a down payment is the full amount owed.26
How do I check a contractor in Delaware?
Delaware's public Contractor Registry lookup lists contractors that properly registered and are considered compliant with Department of Labor laws, searchable by name, ZIP code, certification number, NAICS code or industry; a contractor that drops off the list may not have re-registered, may be under review, or may have been suspended or revoked.23 Delaware's DELPROS License Look-Up searches licensed people by name, city, state, profession, license type or license number, shows each license's status, and lets you open disciplinary history when the Discipline column says Yes.27 Check a Delaware license
Sources
Page updated October 12, 2026. How we source our numbers
- Zonda / Journal of Light Construction, Cost vs. Value 2025, Philadelphia, Pennsylvania. Released 2025. Philadelphia, PA (Cost vs. Value market). Industry source.
- Zonda / Journal of Light Construction, Cost vs. Value 2025, national. Released 2025. United States. Industry source.
- U.S. Census Bureau, American Community Survey 2020–2024 5-year, table B25034. Released January 29, 2026. Wilmington city, Delaware, New Castle County, Delaware.
- U.S. Census Bureau, American Community Survey 2020–2024 5-year, table B25077. Released January 29, 2026. Wilmington city, Delaware, New Castle County, Delaware.
- U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025. Released May 15, 2026. Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro, Plumbers, United States, Electricians, United States, Carpenters, United States, Tile and stone setters, United States.
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020. Released 2021. Wilmington New Castle County Airport (station USW00013781).
- NOAA National Centers for Environmental Information, Comparative Climatic Data, average relative humidity, period of record through 2018. Released November 2024. Wilmington New Castle County Airport (WBAN 13781).
- City of Wilmington (Wilmington Water), Water Quality Report 2025 (Spring 2026), PWS ID DE0000663. Released 2026. City of Wilmington public water (Brandywine Filter Plant).
- U.S. Geological Survey, Water Science School: Hardness of Water. No publication date. View source.
- City of Wilmington (Wilmington Water), Frequently Asked Questions. No publication date. View source.
- New Castle County Department of Land Use, Figure Out What Permits You Need. No publication date. View source.
- New Castle County Department of Land Use, Work Exempt from Permit (County Code Sec. 06.03.012), rev. 1/1/2026. Released January 1, 2026. View source.
- City of Wilmington, Department of Land Use and Planning, Application for Building Permit and General Wilmington Building Guidelines, revised 11/04/2025. Released November 4, 2025. View source.
- U.S. Census Bureau, American Community Survey 2020–2024 5-year, table B25024. Released January 29, 2026. Wilmington city, Delaware.
- U.S. Environmental Protection Agency, Sources of Lead in Drinking Water. Released August 2017. View source.
- U.S. Environmental Protection Agency, Learn About Asbestos. Released July 13, 2026. View source.
- U.S. Environmental Protection Agency, Protect Your Family from Exposures to Asbestos. Released June 25, 2026. View source.
- Centers for Disease Control and Prevention, Facts About Older Adult Falls. Released September 4, 2026. View source.
- Centers for Disease Control and Prevention, STEADI: Check for Safety, a home fall prevention checklist for older adults. No publication date. View source.
- National Institute on Aging, Preventing Falls at Home: Room by Room. Released September 12, 2022. View source.
- Zonda / Journal of Light Construction, Cost vs. Value project description: Bath Remodel | Universal Design. Released September 18, 2025. View source. Industry source.
- National Association of Home Builders, Certified Aging-in-Place Specialist (CAPS). No publication date. View source. Industry source.
- Delaware Department of Labor, Contractor Registry Public Lookup. No publication date. View source.
- New Castle County, Contractor Licensing. No publication date. View source.
- State of Delaware News, DOJ's Consumer Protection Unit hammers out contractor regs. Released November 1, 2023. View source.
- Delaware Department of Justice, Home Improvement Regulations Summary. Released November 2023. View source.
- Delaware Division of Professional Regulation, DELPROS License Look-Up. No publication date. View source.