Updated: May 31, 2026
Location and Projects
Address
1236 taylor ave., Arnold, MD, 21012
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William Christopher Robertson Plumber
William Christopher Robertson, 1236 Taylor Ave, Arnold, MD holds a Heating, Ventilation, Air Conditioning And Refrigeration license and 3 other licenses according to the Maryland license board.
Their BuildZoom score of 93 ranks in the top 27% of 58,058 Maryland licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring William Christopher Robertson, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
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William Christopher Robertson Contact Information
Address: 1236 taylor ave., Arnold, MD 21012
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William Christopher Robertson Arnold
Quality
93
73rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
William Christopher Robertson has a BuildZoom score of 93, which places them above 73% of 58,058 contractors in Maryland.
Activity
|
1 project
|
2023 |
Our building permit records indicate that William Christopher Robertson has worked on at least
1.0 project 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.
Pricing
|
1 project
|
< $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.
Building Permits by William Christopher Robertson
This is a sample of this contractor's permits. Click here to access their complete permit history.
New air conditioning heating & ductwork
Valuation:
N/A
Permit #:
MEC14-0330
Status:
final
Fee:
$147
Permit Type:
Existing building...
Building Type:
N/A
Total new install heating ductwork
Valuation:
N/A
Permit #:
MEC13-0004
Status:
issued
Fee:
$115
Permit Type:
Existing building...
Building Type:
N/A
New & replace existing systems
Valuation:
N/A
Permit #:
MEC12-0155
Status:
final
Fee:
$137
Permit Type:
Existing building...
Building Type:
N/A
Heat pumps & ductwork (mec-# 15787 )
Valuation:
N/A
Permit #:
MEC08-0162
Status:
final
Fee:
$122
Permit Type:
Existing building...
Building Type:
N/A
Install ductwork 15793
Valuation:
N/A
Permit #:
MEC08-0164
Status:
issued
Fee:
$75
Permit Type:
New building - co...
Building Type:
N/A
Tenant fit-out
Valuation:
N/A
Permit #:
MEC09-0168
Status:
final
Fee:
$75
Permit Type:
Existing building...
Building Type:
N/A
Total new installation
Valuation:
N/A
Permit #:
MEC09-0457
Status:
final
Fee:
$85
Permit Type:
Existing building...
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
MEC09-0149
Status:
final
Fee:
$135
Permit Type:
Existing building...
Building Type:
N/A
Subdivision perc (3 lots)
Valuation:
N/A
Permit #:
T02025400
Status:
expired
Fee:
$450
Permit Type:
N/A
Building Type:
N/A
Residential accessory structure (detached garage/carport shed pool gazebo)
2023-02-06
Existing fence is rotting at 4 x 4. going to extend the fence to the rear of the property line
Valuation:
$1,500
Permit #:
B02415084
Status:
rejected
Fee:
$75
Permit Type:
N/A
Building Type:
N/A
Residential accessory structure (detached garage/carport shed pool gazebo)
2023-02-06
Existing fence is rotting at 4 x 4. going to extend the fence to the rear of the property line
Valuation:
$1,500
Permit #:
B02415084
Status:
rejected
Fee:
$75
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
120
BZ Score
-
Avg Project
-
Projects
120
BZ Score
$1.5K
Avg Project
-
Projects
120
BZ Score
$1.5K
Avg Project
-
Projects
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Verified License
BuildZoom confirmed this contractor's license
William Christopher Robertson License info
Verified License
| License # | 2399 |
| 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 William Christopher Robertson at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 78737 |
| Status | Active |
| State | Maryland |
| Type | Heating, Ventilation, Air Conditioning And Refrigeration |
| Class | Heating, Ventilation, Air Conditioning and Refrigeration |
- When BuildZoom last verified this license, it had an expiration date of September, 2018. Check the current license status of William Christopher Robertson with the Maryland Department of Labor, Licensing & Regulation
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 69090 |
| Status | Active |
| State | Maryland |
| Type | Master Natural Gas Fitter Plumbers |
- When BuildZoom last verified this license, it had an expiration date of May, 2015. Check the current license status of William Christopher Robertson with the Maryland Department of Labor, Licensing & Regulation
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 69090 |
| Status | Inactive |
| State | Maryland |
| Type | Plumbers |
- According to the Maryland Department of Labor, Licensing & Regulation, 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 William Christopher Robertson at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
9
Permits
- Building permit records show that William Christopher Robertson has worked on 9 permitted projects.
William Christopher Robertson Employees
WR
William Christopher Robertson
Owner