Updated: Jun 02, 2026
Location and Projects
Address
P O BOX 2051, San Anselmo, CA, 94979
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Sidney Builders Construction
Serving San Anselmo and the greater Marin County area, Sidney Builders Inc specializes in residential construction and remodeling. Active in the industry for over 17 years, the company handles a range of custom home improvement projects, including kitchen and bathroom renovations, home additions, and new construction. Sidney Builders Inc works with homeowners to deliver tailored solutions that fit specific design preferences and functional requirements. Their portfolio highlights projects in Marin County neighborhoods and showcases experience with both interior and exterior renovations. Sidney Builders Inc is equipped to manage projects from initial planning through completion, coordinating with architects, designers, and trades for a streamlined construction process. The company’s long-standing presence in the local market reflects extensive familiarity with Marin County building standards and permit processes.
Sidney Builders Inc Services
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Sidney Builders Inc Contact Information
Phone Number: (415) 646-6115
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Address: P O BOX 2051, San Anselmo, CA 94979
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Sidney Builders Inc San Anselmo
Quality
108
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Sidney Builders Inc has a BuildZoom score of 108, which places them above 95% of 336,931 contractors in California.
Activity
|
5 projects
|
2025 |
|
1 project
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Sidney Builders Inc has worked on at least
8.0 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
|
5 projects
|
Multi-room remodels |
|
3 projects
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that Sidney Builders Inc mostly works on
multi-room remodel
and kitchen remodel
projects.
Pricing
|
2 projects
|
$5k-$20k |
|
1 project
|
$100k-$250k |
|
4 projects
|
$250k-$500k |
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.
Non structural remodel: relocate primary bedroom remodel 2 bathrooms laundry room kitchen update lighting replace 2 windows
Valuation:
$415,950
Permit #:
178958
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Remodel 1st floor 1st & 2nd floor addition
Valuation:
$365,000
Permit #:
176305
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
New garage
Valuation:
$192,000
Permit #:
176307
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Remodel cottage #2 - remove kitchen patch and paint
Valuation:
$7,500
Permit #:
176306
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
A d u
Valuation:
$175,000
Permit #:
172825
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Remodel kitchen pantry laundry room lower level
Valuation:
$315,000
Permit #:
BR24-029
Status:
issued
Fee:
$9,638
Permit Type:
Full construction
Building Type:
N/A
Replace subpanel
Valuation:
$12,000
Permit #:
E25-079
Status:
issued
Fee:
$512
Permit Type:
Electrical only
Building Type:
N/A
Repair deck + new hand rail
Valuation:
$45,000
Permit #:
BR17-347
Status:
final
Fee:
$2,105
Permit Type:
Construction only
Building Type:
N/A
Kitchen remodel including open wall to dining room
Valuation:
$50,000
Permit #:
201612286041
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Whole house remodel
Valuation:
N/A
Permit #:
B2022-0465
Status:
final
Fee:
$34,834
Permit Type:
Major remodel-50%...
Building Type:
N/A
#7 - kitchen remodel includes moving one wall to increase sq ft of kitchen. two bathroom remodels. remove doorway between guest bedroom & living room
Valuation:
$120,000
Permit #:
201511132519
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Install cantilevered trellis electrical & lighting
Valuation:
$10,000
Permit #:
2017-042
Status:
plancheck
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
A d u
Valuation:
$450,000
Permit #:
173885
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Remodel 2 bathrooms 2 new windows 2 new products doors p
Valuation:
N/A
Permit #:
B16-0961
Status:
final
Fee:
$1,123
Permit Type:
Alter/res
Building Type:
N/A
Casework & lighting for break room; on demand water heaters
Valuation:
N/A
Permit #:
B1601-067
Status:
final
Fee:
$552
Permit Type:
Alter-commercial
Building Type:
N/A
Casework & lighting for break room; on demand water heaters
Valuation:
N/A
Permit #:
E1601-054
Status:
final
Fee:
$102
Permit Type:
Alter-commercial
Building Type:
N/A
Replace 3 exterior doors at front of house. apply new roofing membrane at front deck
Valuation:
$30,000
Permit #:
202005287936
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Residential- interior renovation
Valuation:
N/A
Permit #:
B-039936
Status:
final
Fee:
N/A
Permit Type:
Additions/remodels
Building Type:
N/A
Bathroom remodel; move one window over 16"; standard window frame work with a 4"x6 header. electrical upgrade; minor plumbing
Valuation:
$0
Permit #:
09BLD-156
Status:
submittal approved
Fee:
$639
Permit Type:
N/A
Building Type:
N/A
Remodel all 3 bathrooms
Valuation:
N/A
Permit #:
B1710-024
Status:
final
Fee:
$3,235
Permit Type:
Alter-sfd
Building Type:
N/A
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BZ Score
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Avg Project
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Projects
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BZ Score
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Avg Project
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Projects
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BZ Score
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Avg Project
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Projects
Sidney Builders Inc Reviews
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Verified License
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Sidney Builders Inc License info
Verified License
| License # | 886337 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Sidney Builders Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 886337 |
| Status | Active |
| Town | Atherton |
| Type | Contractor, Licensed Contractor |
| Business Type | Corporation |
- When BuildZoom last verified this license, it had an expiration date of April, 2017. Check the current license status of Sidney Builders Inc with the The Town of Atherton, CA
This is a sample of licensing data; click here to access a complete history.
108
BuildZoom Score
Insured
| Insurer | State Compensation Insurance Fund |
Bonded
| Bonded Agent | Wesco Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
20
Permits
- Building permit records show that Sidney Builders Inc has worked on 20 permitted projects.
Sidney Builders Inc Employees
SD
Samuel Santos Diosdado
Sole Owner