Updated: Apr 28, 2026
Location and Projects
Address
511 NOWLIN ST, Rapid City, SD, 57701
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Black Flag plumbing LLC
Black Flag plumbing LLC, 511 Nowlin St, Rapid City, SD (Employees: Black Flag Plumbing Llc and William Crawford) holds a Contractor license according to the Rapid City license board.
Their BuildZoom score of 102 ranks in the top 11% of 3,459 South Dakota licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Black Flag plumbing LLC, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Black Flag plumbing LLC Services
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Black Flag plumbing LLC Contact Information
Phone Number: (605) 389-5314
Edit
Address: 511 NOWLIN ST, Rapid City, SD 57701
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Black Flag plumbing LLC Rapid City
Quality
102
89th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Black Flag plumbing LLC has a BuildZoom score of 102, which places them above 89% of 3,459 contractors in South Dakota.
Activity
|
12 projects
|
2025 |
|
9 projects
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that Black Flag plumbing LLC has worked on at least
22.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
21 projects
|
Plumbing projects |
|
11 projects
|
Sewer laterals |
Analyzing permits over the last 4 years shows that Black Flag plumbing LLC mostly works on
plumbing project
and sewer lateral
projects.
Pricing
|
1 project
|
$50k-$100k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by Black Flag plumbing LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Mdu new gas service
Valuation:
N/A
Permit #:
CIBP25-0766
Status:
plancheck
Fee:
N/A
Permit Type:
339 utility
Building Type:
N/A
Vacant duplex
Valuation:
N/A
Permit #:
CIVFP25-0006
Status:
issued
Fee:
$50
Permit Type:
Vacant and forecl...
Building Type:
N/A
Water repair
Valuation:
N/A
Permit #:
CIUM25-0187
Status:
final
Fee:
$125
Permit Type:
Um water repair
Building Type:
N/A
Sewer repair
Valuation:
N/A
Permit #:
CIUM25-0168
Status:
issued
Fee:
$125
Permit Type:
Um sewer repair
Building Type:
N/A
Water repair
Valuation:
N/A
Permit #:
CIUM25-0141
Status:
issued
Fee:
$125
Permit Type:
Um water repair
Building Type:
N/A
Sewer repair
Valuation:
N/A
Permit #:
CIUM25-0119
Status:
issued
Fee:
$125
Permit Type:
Um sewer repair
Building Type:
N/A
Bhe moving oh to 3 conduit
Valuation:
N/A
Permit #:
CIBP25-1010
Status:
plancheck
Fee:
N/A
Permit Type:
339 utility
Building Type:
N/A
Sewer repair/row
Valuation:
N/A
Permit #:
CIUM25-0189
Status:
final
Fee:
$150
Permit Type:
Um sewer repair
Building Type:
N/A
29 x 39 detached garage
Valuation:
$72,599
Permit #:
COBP24-0214
Status:
approved
Fee:
$415
Permit Type:
330co residence g...
Building Type:
N/A
Sewer repair
Valuation:
N/A
Permit #:
CIUM25-0355
Status:
final
Fee:
$125
Permit Type:
Um sewer repair
Building Type:
N/A
Sewer repair
Valuation:
N/A
Permit #:
CIUM25-0337
Status:
final
Fee:
$125
Permit Type:
Um sewer repair
Building Type:
N/A
Water repair
Valuation:
N/A
Permit #:
CIUM25-0235
Status:
final
Fee:
$125
Permit Type:
Um water repair
Building Type:
N/A
Fixing retaining wall
Valuation:
N/A
Permit #:
CIBP24-1489
Status:
issued
Fee:
$15
Permit Type:
339 other occupy
Building Type:
N/A
Sewer repair
Valuation:
N/A
Permit #:
CIUM24-0022
Status:
final
Fee:
$107
Permit Type:
Um sewer repair
Building Type:
N/A
4 sewer repair
Valuation:
N/A
Permit #:
CIUM24-0016
Status:
final
Fee:
$265
Permit Type:
Um sewer repair
Building Type:
N/A
Sewer repair
Valuation:
N/A
Permit #:
CIUM24-0284
Status:
final
Fee:
$125
Permit Type:
Um sewer repair
Building Type:
N/A
Water repair
Valuation:
N/A
Permit #:
CIUM24-0243
Status:
final
Fee:
$125
Permit Type:
Um water repair
Building Type:
N/A
Sewer repair
Valuation:
N/A
Permit #:
CIUM24-0089
Status:
final
Fee:
$87
Permit Type:
Um sewer repair
Building Type:
N/A
Sewer repair
Valuation:
N/A
Permit #:
CIUM23-0533
Status:
issued
Fee:
$87
Permit Type:
Um sewer repair
Building Type:
N/A
Sewer repair
Valuation:
N/A
Permit #:
CIUM23-0532
Status:
issued
Fee:
$87
Permit Type:
Um sewer repair
Building Type:
N/A
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Black Flag plumbing LLC License info
Verified License
| License # | AEC3598 |
| Status | Active |
| City | Rapid City |
| Type | Contractor |
| Date Issued | 01-29-2026 |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Black Flag plumbing LLC at the Rapid City, South Dakota.
This is a sample of licensing data; click here to access a complete history.
102
BuildZoom Score
22
Permits
- Building permit records show that Black Flag plumbing LLC has worked on 22 permitted projects.
Black Flag plumbing LLC Employees
BL
Black Flag Plumbing Llc
License Card Name
WC
William Crawford
Licensee