Updated: Jun 28, 2026
Location and Projects
Address
Frederick, MD, 21703
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Kenneth C. Johnson Plumber
Kenneth C. Johnson, Frederick, MD (Employee: Kenneth Griffith Johnson) holds a Heating, Ventilation, Air Conditioning And Refrigeration license and 3 other licenses according to the Maryland license board.
Their BuildZoom score of 110 ranks in the top 4% of 58,058 Maryland licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Kenneth C. Johnson, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Kenneth C. Johnson Services
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Kenneth C. Johnson Contact Information
Phone Number: (301) 698-9805
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Kenneth C. Johnson Frederick
Quality
110
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Kenneth C. Johnson has a BuildZoom score of 110, which places them above 96% of 58,058 contractors in Maryland.
Activity
|
28 projects
|
2025 |
|
20 projects
|
2024 |
|
25 projects
|
2023 |
Our building permit records indicate that Kenneth C. Johnson has worked on at least
73.0 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
|
19 projects
|
Commercial Renovations |
|
18 projects
|
Home Additions |
|
9 projects
|
New Constructions |
|
30 projects
|
Plumbing projects |
|
16 projects
|
Sewer laterals |
Analyzing permits over the last 4 years shows that Kenneth C. Johnson mostly works on
plumbing project
and commercial renovation
projects.
Pricing
|
20 projects
|
< $5k |
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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
[none] - 14940 silver trail ln
Valuation:
$1
Permit #:
PFG-1531973-2025
Status:
issued
Fee:
$570
Permit Type:
N/A
Building Type:
N/A
17 - (nr) - remodeling/additional work/tenant space
2025-06-05
Edens - 15791 old columbia pk burtonsville md 20866
Valuation:
$1
Permit #:
PFG-1430710-2023
Status:
final
Fee:
$1,080
Permit Type:
N/A
Building Type:
N/A
Cap off sewer and water at property line
Valuation:
$5,000
Permit #:
B02417811
Status:
rejected
Fee:
$85
Permit Type:
N/A
Building Type:
N/A
Cap off sewer and water at property line
Valuation:
N/A
Permit #:
P02311016
Status:
complete
Fee:
$60
Permit Type:
N/A
Building Type:
N/A
17 - (nr) - remodeling/additional work/tenant space
2024-03-21
Future tenant - 9761 traville gateway dr
Valuation:
$9
Permit #:
PFG-1428716-2023
Status:
final
Fee:
$2,438
Permit Type:
N/A
Building Type:
N/A
17 - (nr) - remodeling/additional work/tenant space
2025-01-15
Salvation army - 3312 kenilworth ave
Valuation:
$16
Permit #:
PFG-1430942-2023
Status:
final
Fee:
$4,338
Permit Type:
N/A
Building Type:
N/A
City of riverdale - 4721 woodberry st
Valuation:
$3
Permit #:
PFG-1426918-2023
Status:
final
Fee:
$540
Permit Type:
N/A
Building Type:
N/A
17 - (nr) - remodeling/additional work/tenant space
2023-09-26
[none] - 4600 mitchellville rd
Valuation:
$28
Permit #:
PFG-1437366-2023
Status:
final
Fee:
$11,269
Permit Type:
N/A
Building Type:
N/A
17 - (nr) - remodeling/additional work/tenant space
2025-08-03
[none] - 15751 old columbia pk
Valuation:
$4
Permit #:
PFG-1427346-2023
Status:
expired
Fee:
$1,630
Permit Type:
N/A
Building Type:
N/A
17 - (nr) - remodeling/additional work/tenant space
2025-07-18
[none] - 15771 old columbia pk
Valuation:
$1
Permit #:
PFG-1427341-2023
Status:
expired
Fee:
$1,350
Permit Type:
N/A
Building Type:
N/A
Plumbing for an alteration replace existing bathroom fixtures and redo snack bar
Valuation:
N/A
Permit #:
P02298332
Status:
complete
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
17 - (nr) - remodeling/additional work/tenant space
2022-12-01
Target wheaton - 11160 veirs mill rd
Valuation:
$80
Permit #:
PFG-1372259-2022
Status:
final
Fee:
$21,904
Permit Type:
N/A
Building Type:
N/A
Plumbing for shell building
Valuation:
N/A
Permit #:
P02311293
Status:
filed
Fee:
$3,150
Permit Type:
N/A
Building Type:
N/A
Water service - cap-off/sewer lateral - cap-off
Valuation:
N/A
Permit #:
SFP-1467981-2024
Status:
final
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
Water service - cap-off/sewer lateral - cap-off
Valuation:
N/A
Permit #:
SFP-1467977-2024
Status:
final
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
Water service - cap-off/sewer lateral - cap-off
Valuation:
N/A
Permit #:
SFP-1466579-2024
Status:
final
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
Water service - cap-off/sewer lateral - cap-off
Valuation:
N/A
Permit #:
SFP-1466575-2024
Status:
final
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
Water service - cap-off/sewer lateral - cap-off
Valuation:
N/A
Permit #:
SFP-1466572-2024
Status:
final
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
Water service - cap-off/water service - cap-off
Valuation:
N/A
Permit #:
SFP-1465781-2024
Status:
final
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
Water service - cap-off/sewer lateral - cap-off
Valuation:
N/A
Permit #:
SFP-1465046-2024
Status:
final
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
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117
BZ Score
$1
Avg Project
-
Projects
120
BZ Score
-
Avg Project
-
Projects
120
BZ Score
$1.5K
Avg Project
-
Projects
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Verified License
BuildZoom confirmed this contractor's license
Kenneth C. Johnson License info
Verified License
| License # | 6993 |
| Status | Active |
| State | Maryland |
| Type | Heating, Ventilation, Air Conditioning And Refrigeration |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Kenneth C. Johnson at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 4556 |
| Status | Active |
| State | Maryland |
| Type | Plumbers |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Kenneth C. Johnson at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 8734 |
| Status | Active |
| State | Maryland |
| Type | Electricians |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Kenneth C. Johnson at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Annapolis |
| Type | Plumbing Cont |
- According to the The City of Annapolis, MD, 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 Kenneth C. Johnson at the The City of Annapolis, MD.
This is a sample of licensing data; click here to access a complete history.
110
BuildZoom Score
Insured
| Insurer | Erie Insurance |
436
Permits
- Building permit records show that Kenneth C. Johnson has worked on 436 permitted projects.
Kenneth C. Johnson Employees
KJ
Kenneth C. Johnson
Owner
KJ
Kenneth Griffith Johnson
Owner