— Licensed · State-verified · Re-checked weekly
Find a licensed plumber in Delaware
Every plumber here holds an active state license, re-verified against the board each week. Tell us what is going on. Get matched with licensed pros before a small leak becomes a flood. Free for homeowners.
Why verification matters
Unlicensed plumbing is a leading cause of hidden water damage and failed inspections. A licensed plumber is bonded, insured, and works to code - so a repair does not become a mold claim.
Common plumbers jobs
For businesses
Buy the plumbers list in Delaware, by territory
Every active plumber license in Delaware, verified against the state board and enriched with phone, email, and website. Draw your territory and pay for what you draw.
Radius
StatewideWhy ContractorRoster
The state board's job ends at the license. Ours starts there.
When you need a licensed plumber in a market you don't know, you end up with a dozen browser tabs open to state websites and no phone numbers to show for it — typically 2 to 4 hours of work. ContractorRoster delivers the complete list in minutes: every active license in your area, enriched with phone, email, and website for over 95% of records.
Delaware: Delaware licenses electricians, plumbers, and HVACR contractors through the Division of Professional Regulation, and every other contractor working in the state holds a Division of Revenue contractor business license. Both rosters are published as state open data, refreshed daily. Phone and email aren't in the state files, so we fill them from public sources; business-license records carry the full street address. Out-of-state firms licensed in Delaware are excluded from these results by default so you see in-state contractors first.
Use cases
- ✓Sourcing licensed plumbing subs for a project in an unfamiliar market
- ✓Pulling a complete licensed-only call sheet for a manufacturer launch
- ✓Backfilling vendor coverage when your usual plumber can't take the job
- ✓Quoting bidders for a multi-property rehab across several cities
Top cities for plumbers in Delaware
928 active plumbers licensed across Delaware, with phone, email, and website on most records. See the full Delaware map →
Other trades in Delaware
- Electricians in Delaware
- HVAC Contractors in Delaware
- General Contractors in Delaware
- Roofing Contractors in Delaware
- Solar Contractors in Delaware
- Landscape Contractors in Delaware
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- Carpenters in Delaware
- Concrete Contractors in Delaware
- Masons in Delaware
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- Tile Contractors in Delaware
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- Painters in Delaware
- Flooring Contractors in Delaware
- All contractors in Delaware →
Plumbers in other states
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- Plumbers in Nevada
- Plumbers in Pennsylvania
- Plumbers in Utah
- Plumbers in Connecticut
- Plumbers in Louisiana
- Plumbers in Oklahoma
- Plumbers in Alabama
- Plumbers in Arkansas
- Plumbers in West Virginia
- Plumbers in Nebraska
- Plumbers in Idaho
- Plumbers in Alaska
- Plumbers in Vermont
- All plumbers nationwide →
“I needed every licensed plumber in three counties by Wednesday for a vendor outreach campaign. The CSV hit my inbox in under 4 minutes. Used it the same afternoon.”
Daniel R.
Operations Director, building services firm, Washington
Common questions about plumbers in Delaware
How do I find a licensed plumber in Delaware?
Describe your job on ContractorRoster and we match you with plumbers verified against the Delaware Division of Professional Regulation (DPR) + Division of Revenue — license status re-checked weekly, not just a star rating. It's free for homeowners, and matched pros reach out to you directly.
How do I check if a Delaware plumber is licensed?
Every plumber we list carries their active license number, which you can confirm directly with the Delaware Division of Professional Regulation (DPR) + Division of Revenue. We re-check the board weekly, so you see current license status rather than a badge that could be out of date.
How many licensed plumbers are in Delaware?
928 plumbers hold an active license in Delaware, verified against the Delaware Division of Professional Regulation (DPR) + Division of Revenue. ContractorRoster delivers the full list with phone, email, and website.
Where does the Delaware plumber data come from?
Every record is sourced directly from the Delaware Division of Professional Regulation (DPR) + Division of Revenue — the official Delaware licensing board — then enriched with phone, email, website, and Google ratings from public business sources.
What's included for each plumber?
Business name, license number and status, issue and expiration dates, and full address — plus phone, email, website, and Google rating where publicly available. About 9 in 10 records include a phone number.
How much does a list of Delaware plumbers cost?
Pricing follows the size of the territory you draw, starting at $19 for a small area. You pay once and the CSV arrives by email within minutes — no subscription and no account required.
Is the Delaware plumber list current?
Yes. The data is refreshed from the Delaware Division of Professional Regulation (DPR) + Division of Revenue on a recurring basis, last updated 2026-07-10, so you reach plumbers whose licenses are active right now.
From $19. Pay for what you draw
Draw your territory on the map; the price follows the size of the list. Pay once. CSV in your inbox shortly. No subscription, no account.