Updated: Dec 06, 2025
Location and Projects
Address
Smyrna, DE, 19977
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Black Diamond PlumbingLLC
Black Diamond PlumbingLLC at Smyrna, DE 19977, held a Plumber license (#2019601771) with the New Castle County contractors license board with an expiration date of 12-31-2023. We last verified the license was expired on 12-05-2025.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 8,071 Delaware contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.
Black Diamond PlumbingLLC Services
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Black Diamond PlumbingLLC Contact Information
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Building Permits by Black Diamond PlumbingLLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Rough in plumbing and final for full bathroom and kitchenette toilet tub/shower single vanity and kitchen sink *(rev.________:remove sewer installation from permit)*
Valuation:
N/A
Permit #:
202113661
Status:
final
Fee:
$90
Permit Type:
N/A
Building Type:
Residential
Rough-in and finish new bathroom in bedroom first floor 1 toilet 1 sink 1 shower tie into plumbing in basement
Valuation:
N/A
Permit #:
202304539
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Residential
Rough-in for 2 toilet 2 sink 1 mop sink 1 water heater and 1 highlow water fountain *(rev. 07/30/2020: putting an air test on exisiting gas piping)*
Valuation:
N/A
Permit #:
202006578
Status:
final
Fee:
$209
Permit Type:
N/A
Building Type:
Commercial
Rough in new ada bathrooms and water fountains and mop sink
Valuation:
N/A
Permit #:
202206175
Status:
final
Fee:
$132
Permit Type:
N/A
Building Type:
Commercial
Rough-in ada bathrooms with a new water fountain and mop sink. install water heater
Valuation:
N/A
Permit #:
202016532
Status:
final
Fee:
$79
Permit Type:
N/A
Building Type:
Commercial
Replace 40 gallon natural gas water heater with a new 40 gallon gas water heater
Valuation:
N/A
Permit #:
202102947
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Residential
Install new ada half bathroom with drinking fountain (high low) and water heater
Valuation:
N/A
Permit #:
202012514
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Commercial
Replacement of existing water service with new poly water service
Valuation:
N/A
Permit #:
202017349
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Residential
Install new basement bathroom with a kitchenette in basement
Valuation:
N/A
Permit #:
202105937
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Residential
Run gas lines for future so delmarva will run gas to house
Valuation:
N/A
Permit #:
202016539
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Residential
Adding guy-grey box in basement for new laundry hook up
Valuation:
N/A
Permit #:
202110110
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Residential
Installing 2 h.c. bathrooms - mop sink - water heater - drinking fountain
Valuation:
N/A
Permit #:
201914663
Status:
final
Fee:
$74
Permit Type:
N/A
Building Type:
Commercial
New plumbing inside underground plumbing 5 fixtures rough in new basement bathroom underground with kitchen on sewage crock. tie crock into 4 sewer going out of house and tie vents into future vent supplied when house was built
Valuation:
N/A
Permit #:
202116190
Status:
final
Fee:
$65
Permit Type:
New construction
Building Type:
Residential
Rough in new bathroom laundry and kitchen on pump in basement run new pex water lines. tie vent into existing vent in basement. set finish
Valuation:
N/A
Permit #:
202209484
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Residential
Rough in 2 full bathroom kitchen and laundry in basement all new pvc drains pex water *(rev.__________: addition drainage system with crock and sump pump in basement.)*
Valuation:
N/A
Permit #:
202118241
Status:
final
Fee:
$90
Permit Type:
N/A
Building Type:
Residential
Run new gas piping for future use in house (1) 1/2 port for fire place (4) 3/4 ports for future in basement
Valuation:
N/A
Permit #:
202116408
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Residential
Install (3) new shampoo sinks with new tankless water heater and washer. install laundry sink. move lav sink to be ada compliant. *(rev.10/8/2020:add gas to permit.)*
Valuation:
N/A
Permit #:
202011388
Status:
final
Fee:
$140
Permit Type:
N/A
Building Type:
Commercial
Rough in and install new plumbing for 1 hc toilet 1 hc lav faucet 1 drinking fountain 1 laundry tub and 1 electric water heater
Valuation:
N/A
Permit #:
202200938
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Commercial
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Black Diamond PlumbingLLC License info
Inactive License
| License # | 2019601771 |
| Status | Inactive |
| State | New Castle County |
| Type | Resident Contractor |
- According to the State of Delaware Department of Finance: Division of Revenue, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Black Diamond PlumbingLLC at the State of Delaware Department of Finance: Division of Revenue.
This is a sample of licensing data; click here to access a complete history.
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BuildZoom Score
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- *No active license on file. If you are Black Diamond PlumbingLLC, click “This is My Business” to update your information.
18
Permits
- Building permit records show that Black Diamond PlumbingLLC has worked on 18 permitted projects.