Updated: Oct 15, 2025
Location and Projects
Address
525 BRANNAN STREET # 400, San Francisco, CA, 94107
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Hamilton & Aitken Architects
Hamilton & Aitken Architects, 525 Brannan St, San Francisco, CA (Owned by: Hamilton Chadwick) holds a Architect license and 1 other license according to the California license board.
Their BuildZoom score of 105 ranks in the top 8% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Hamilton & Aitken Architects, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Hamilton & Aitken Architects Services
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Hamilton & Aitken Architects Contact Information
Phone Number: (415) 974-5030
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Address: 525 BRANNAN STREET # 400, San Francisco, CA 94107
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Hamilton & Aitken Architects San Francisco
Quality
105
92nd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Hamilton & Aitken Architects has a BuildZoom score of 105, which places them above 92% of 336,931 contractors in California.
Activity
|
3 projects
|
2025 |
|
7 projects
|
2024 |
|
8 projects
|
2023 |
Our building permit records indicate that Hamilton & Aitken Architects has worked on at least
18.0 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 Hamilton & Aitken Architects mostly works on
home addition
projects.
Pricing
|
3 projects
|
< $5k |
|
2 projects
|
$5k-$20k |
|
3 projects
|
$20k-$50k |
|
2 projects
|
$50k-$100k |
|
2 projects
|
$500k-$1mil |
|
1 project
|
$1mil+ |
The typical size of their permits is approximately $25,000. This graph shows the distribution of these job values.
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 Hamilton & Aitken Architects
This is a sample of this contractor's permits. Click here to access their complete permit history.
Interior, exterior and soft story structural upgrade. rehab 6unit, 3 story apartment bldg.reconstrct (e)wood stairs, (e)wood siding&(e)window in-kind.(n)roof covering.repair or replacement all(e)fixtures finishes and casework@all(e)kitchen&bathroom. replace space conditioning system. domestic water heaters
Valuation:
$895,900
Permit #:
202203311264
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Interior, exterior and soft story structural upgrade. rehab 6unit, 3 story apartment bldg.reconstrct (e)wood stairs, (e)wood siding&(e)window in-kind.(n)roof covering.repair or replacement all(e)fixtures finishes and casework@all(e)kitchen&bathroom. replace space conditioning system
Valuation:
$895,500
Permit #:
202203230622
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Remove (e) winder stairs and porches at central and east lightwells. construct (n) wood stairs in w/straight runs handrails on one side guardrails on open sides. replace (e) back door at each of the apratments with soild core wood door and hardware. repair handrail at (e) stair at west lightwell
Valuation:
$96,000
Permit #:
202405162245
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Renovation of an existing detached unconditioned garage including new exterior and interior finishes new roof covering new window and new doors in existing openings. in kind. demolish (e) storage shed adjacent to (e) garage
Valuation:
$45,096
Permit #:
202404250747
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Revision to pa 2021-0309-6181-s1 and to comply with complaint 202306896 in-kind rebuild of (e) wood framed exterior wall @ rear of (e) structure. no change to (e) wall layout or (e) building footprint. reduce the size of previously approved non-egress window from 48 to 24 window is at rear of building
Valuation:
$6,000
Permit #:
202304206106
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Interior kitchen and bathroom renovation of 3rd fl unit in a 3 story 3 unit building. interior work includes new fixtures finishes casework in e kitchen and bathroom. removal and modification to interior non structural and load bearing wood framed partitons
Valuation:
$70,000
Permit #:
202212168511
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Revision to 202405162245. revised foundations to span to avoid sewer. modify slope of flatwork to provide drainage away from foundation. clarify maximum riser at east stair
Valuation:
$1
Permit #:
202510036719
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Commercial addition alteration tenant improvement change of occupancy or use
2025-02-18
During construction under permit bldg2022-0098 dryrot was discovered over 50% of an existing beam seat at the edge of the building. this application is to reduce the load on that existing beam by adding a mid-span support and new support under the sound end of the dryrotted beam end **related permit bld2022-00938**
Valuation:
N/A
Permit #:
BLD2023-03270
Status:
final
Fee:
$1,808
Permit Type:
N/A
Building Type:
N/A
Deck stair: highlands rec center: repair 221 sq. ft. of deteriorated exit balcony and stair - replace concrete footing. **related permit bld2023-03270** resubmittal #1 - pvt - 11/21/2022 response to building comments. (building comments sent 7/6/22) sent comments again 11/3/22 - (issued in error - changed status back to resub required for building - pvt) building approved redlines: sh... see more
Valuation:
N/A
Permit #:
BLD2022-00938
Status:
final
Fee:
$4,222
Permit Type:
N/A
Building Type:
N/A
Unit 804 8th floor - remodel kitchen and bathroom to include removal and replacing of bathroom walls kitchen appliances casework fixtures and finishes
Valuation:
$80,000
Permit #:
202403057098
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Kitchen and bathroom renovation on 1st fl at the rear of (e) residence. new windows at 1st fl rear elevation. new skylights and structural improvements. project area is 450 gsf
Valuation:
$100,000
Permit #:
202209212861
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Revision to bpa#202103096181-s1 repair/rebuild (e) wood framed property line wall w/new 1-hour rating assembly repair/rebuild (e) concrete planter to match (e) planter
Valuation:
$6,000
Permit #:
202304105388
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Demolish and replace (e) wood basement wall & footins w/n concrete foundation wall & footing. replace (e) alum windows with n/wood french doors. demolish in kind reconstruct of patio patio stairs & retaining wall and new built in bench and sitting wall. brick repair at frnt facade. int finish & casework
Valuation:
$57,434
Permit #:
201908280058
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
To erect 1 story no basement type v youth center. new construction of detached annex building at rear
Valuation:
$225,000
Permit #:
202110080125
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
91 - social care ...
Revision to permit 202103096181-s1. demolish approx. 80sf of existing slab on grade foundation and install new concrete slab on grade and footings
Valuation:
$8,000
Permit #:
202303224148
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Revision to pa 201908280058. repair of (e) wood framing due to dry-rot and install concrete foundation under a one-story portion of the (e) home. (n) foundation will be similar to the new foundation work approved under prev application
Valuation:
$11,534
Permit #:
202005267750
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Repair exterior siding addition blocking and framing as needed. not visable from the street
Valuation:
$20,000
Permit #:
202507160891
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
05 - food/beverag...
Unit 803 on 8th floor- remodel and relocate (e) kitchen within the same area. convert (e) kitchen space into a closet
Valuation:
$30,000
Permit #:
202403057102
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Interior design of lobby at ground level of an office building. scope includes interior finishes and replacement of exterior door
Valuation:
$50,000
Permit #:
202103126500
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
This permit is to resolve a notice of violation by sfdbi -nov# 202032487- replacement of cracked beam and deck framing at first floor deck exterior guard rail deteriorated stairs and fence
Valuation:
$30,000
Permit #:
202109299481
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
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Verified License
BuildZoom confirmed this contractor's license
Hamilton & Aitken Architects License info
Verified License
| License # | C17466 |
| Status | Active |
| State | California |
| Type | Architect |
- BuildZoom verified this license was active as of September 2025.
Verify this license's status for Hamilton & Aitken Architects at the California Architect License Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | C15932 |
| Status | Active |
| State | California |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Hamilton & Aitken Architects with the California Architect License Board
This is a sample of licensing data; click here to access a complete history.
105
BuildZoom Score
57
Permits
- Building permit records show that Hamilton & Aitken Architects has worked on 57 permitted projects.
Hamilton & Aitken Architects Employees
AG
Aitken Susan G
Owner
HC
Hamilton Chadwick
Owner
SA
Susan G. Aitken