Updated: Dec 21, 2025
Location and Projects
Address
587 KENWYN ROAD, Oakland, CA, 94610
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McCollum William Architect
Their BuildZoom score of 93 ranks in the top 27% of 336,931 California licensed contractors.
If you are thinking of hiring McCollum William, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
McCollum William Services
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McCollum William Contact Information
Address: 587 KENWYN ROAD, Oakland, CA 94610
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McCollum William Oakland
Quality
93
73rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
McCollum William has a BuildZoom score of 93, which places them above 73% of 336,931 contractors in California.
Activity
|
2 projects
|
2025 |
|
1 project
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that McCollum William has worked on at least
4.0 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
|
3 projects
|
Home Additions |
Analyzing permits over the last 4 years shows that McCollum William mostly works on
home addition
projects.
Pricing
|
1 project
|
$50k-$100k |
|
1 project
|
$100k-$250k |
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.
Window replacement remodel interior addition new bedroom at previous loft location renovate (2) bathrooms upgrade electrical
Valuation:
$60,000
Permit #:
B2024-01379
Status:
plancheck
Fee:
$1,305
Permit Type:
N/A
Building Type:
N/A
A0.1: revised project description to addition the following: - replace flooring - replace gypsum board on walls and ceilings - replace existing windows and doors (note: new windows and doors are still in the project as approved in original permit submittal) - replace two wood burning fireplaces with gas fireplaces a0.3: revised title 24 calcs to include new windows & doors a2.2: - rep... see more
Valuation:
N/A
Permit #:
BLD20-6946.R01
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Interior whole house remodel addition new bathroom with new window addition shower in (e) 1/2 bathroom modify (2) windows in attic minor changes to interior walls associated w remodel work - r01 revision to include the replacement of flooring gymsum board on wall/ceilings replace (e) windows/doors (note: new windows and doors are still in the project as approved in original permit sub... see more
Valuation:
N/A
Permit #:
BLD20-6946
Status:
final
Fee:
$3,479
Permit Type:
N/A
Building Type:
N/A
Site preparation for building pad & parking lot
Valuation:
$0
Permit #:
99030-20000-02144
Status:
Permit Finaled
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
2-story addition at rear of house new total area of 2738 sq. ft: • demolish 331 sq. ft. add-on to the original house & exterior stair • 1091 sq. ft. rebuilt added at lower level • 418 sq. ft. at upper level • internal stair & conversion of unfinished basement to livable space • new bedroom & bathroom located in addition • new bathroom downstairs • kitchen renovation • reconfigure upst... see more
Valuation:
$175,000
Permit #:
PREBLD25-1077
Status:
applied
Fee:
$121
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
ESR-2025-02246
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
ESR-2024-00783
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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McCollum William Reviews
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Recent Buildzoom Projects
McCollum William License info
License Not Verified
| License # | C36117 |
| Status | Active |
| State | California |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of November, 2025. Check the current license status of McCollum William with the California Architect License Board
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
McCollum William Employees
MW
Mccollum William
Owner