Updated: Feb 15, 2026
Location and Projects
Address
5577 SOBRANTE AVENUE, El Sobrante, CA, 94803
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Hamilton & Co Architecture
Hamilton & Co Architecture, 5577 Sobrante Ave, El Sobrante, CA (Owned by: Hamilton Danielle Rachel) holds a Architect license and 2 other licenses according to the California license board.
Their BuildZoom score of 91 ranks in the top 37% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Hamilton & Co Architecture, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Hamilton & Co Architecture Services
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Hamilton & Co Architecture Contact Information
Phone Number: (510) 547-6914
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Address: 5577 SOBRANTE AVENUE, El Sobrante, CA 94803
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Building Permits by Hamilton & Co Architecture
This is a sample of this contractor's permits. Click here to access their complete permit history.
3 new ret walls w a combined total of 236 lf & max height of 5 ft
Valuation:
$32,639
Permit #:
W12-000474
Status:
APPROVED
Fee:
$956
Permit Type:
N/A
Building Type:
N/A
Convert exist 600 sq ft structure to 2nd unit. request to convert existing 600 sq ft detached accessory structure into second unit
Valuation:
$0
Permit #:
UPE97-0126
Status:
DONE
Fee:
$1,433
Permit Type:
N/A
Building Type:
N/A
Remodel family room master bedroom master bathroom and gu
Valuation:
$120,000
Permit #:
BLD1999-01124
Status:
INSPECTION
Fee:
$2,479
Permit Type:
Interior remodel
Building Type:
N/A
Tenant improvements to fourth floor building.
Valuation:
$75,000
Permit #:
B2007-01182
Status:
Closed Complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Bathroom remodel/dormer
Valuation:
N/A
Permit #:
B0201-028
Status:
final
Fee:
$594
Permit Type:
Alter-res
Building Type:
N/A
225 sq ft entry area & ramp
Valuation:
$5,223
Permit #:
2004 132977 CI
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Electrical ===fax====stj
Valuation:
$0
Permit #:
20231
Status:
Completed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Bathroom remodel/dormer
Valuation:
N/A
Permit #:
E0202-010
Status:
final
Fee:
$52
Permit Type:
Alter-res
Building Type:
N/A
Bathroom remodel/dormer
Valuation:
N/A
Permit #:
M0202-010
Status:
final
Fee:
$52
Permit Type:
Alter-res
Building Type:
N/A
Bathroom remodel/dormer
Valuation:
N/A
Permit #:
P0202-011
Status:
final
Fee:
$52
Permit Type:
Alter-res
Building Type:
N/A
Gas----fax----stj
Valuation:
$0
Permit #:
20211
Status:
Completed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$0
Permit #:
BUS1998-009920
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Demolish (e) single family residence & building (n) 3718 sq ft single family residence two story with attached garage. (e) house 2258 sf & (e) garage 510 sq ft
Valuation:
$516,731
Permit #:
2001 003035 RS
Status:
expired
Fee:
N/A
Permit Type:
Single family
Building Type:
N/A
Application of xypex chemical paste over existing concrete slab in place of vapor retarder layer under slab
Valuation:
N/A
Permit #:
AMR1400056
Status:
expired
Fee:
$451
Permit Type:
N/A
Building Type:
N/A
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Hamilton & Co Architecture Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Hamilton & Co Architecture License info
Verified License
| License # | C18962 |
| Status | Active |
| State | California |
| Type | Architect |
- BuildZoom has not verified this license since June, 2025.
Verify this license's status for Hamilton & Co Architecture at the California Architect License Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | C18962 |
| Status | Active |
| City | San Carlos |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of June, 2015. Check the current license status of Hamilton & Co Architecture with the The City of San Carlos, CA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 552970 |
| Status | Inactive |
| State | California |
| Type | General Building |
- According to the California Contractors State License Board, 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 Hamilton & Co Architecture at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
91
BuildZoom Score
10
Permits
- Building permit records show that Hamilton & Co Architecture has worked on 10 permitted projects.
Hamilton & Co Architecture Employees
DH
Danielle Rachel Hamilton
Sole Owner
HC
Hamilton & Company
Owner
HR
Hamilton Danielle Rachel
Owner