Updated: Jul 03, 2026
Location and Projects
Address
1730 TENTH AVENUE, Oakland, CA, 94606
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Rockridge Builders Construction
Founded in 1976 by William (Bill) Hinkamp, a graduate of UC Berkeley’s College of Environmental Design, Rockridge Builders brings decades of construction experience to residential projects throughout Oakland and surrounding East Bay neighborhoods. The company works closely with local homeowners, architects, and engineers to deliver remodeling services managed on a tight schedule. Rockridge Builders is recognized for its professional approach to construction management and competitive pricing. Bill Hinkamp’s background in environmental design informs the firm’s methods, offering clients the perspective of a design professional throughout every phase of the project. Rockridge Builders is often recommended by architects and engineers for its ability to execute remodels and renovations at a high standard across diverse property types.
Rockridge Builders Services
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Rockridge Builders Contact Information
Phone Number: (510) 535-1682
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Address: 1730 TENTH AVENUE, Oakland, CA 94606
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Rockridge Builders Oakland
Quality
104
91st percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Rockridge Builders has a BuildZoom score of 104, which places them above 91% of 336,931 contractors in California.
Activity
|
3 projects
|
2025 |
|
2 projects
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Rockridge Builders has worked on at least
7.0 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.
Pricing
|
1 project
|
< $5k |
|
1 project
|
$5k-$20k |
|
1 project
|
$20k-$50k |
|
2 projects
|
$500k-$1mil |
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.
The project is to install a new photovoltaic system. the system consists of ground mounted shade structure solar arrays and associated power conditioning equipment
Valuation:
$632,000
Permit #:
BCSOLAR-25-0004
Status:
complete
Fee:
$5,351
Permit Type:
Addition
Building Type:
N/A
“dutton nails” - replace broken storefront glass and tile from vehicle collision with building. cosmetic only. no structural work. enf-2025-00029
Valuation:
$10,000
Permit #:
BCALT-25-0035
Status:
final
Fee:
$702
Permit Type:
Minor repair
Building Type:
N/A
Soil boring permit: gap inc"; drill (2) 6-inch diameter borings to 90 below ground surface. drillers to collect spoils produced during the investigation and place 55 gallon drums to retrieved at a later date. borings to be backfilled with neat grout and patched with asphalt. (2) non-intrusive geophysical surveys to be preformed swl 328
Valuation:
$33,000
Permit #:
B-2023-0052
Status:
issued
Fee:
$2,558
Permit Type:
N/A
Building Type:
Parking lot
Resubmiting structural drawing rev only: new rear patio (including retaining wall), (n) reinf. conc.gr bm at line 6-5;slab-on-grade infills and all new structural framing & lateral force resisting elements above the foundation. ref pa201807275802
Valuation:
$1
Permit #:
202012291888
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
(b) - building alteration - 3+ residential units or commercial (building)
2022-02-26
Tenant improvement. for creation of full-service restaurant with beer/wine (bombera). change of use from fire station. per pln17196
Valuation:
$1,000,000
Permit #:
B1804305
Status:
final
Fee:
$42,803
Permit Type:
N/A
Building Type:
N/A
Note: ***before any work in right of way please call 510-238-3860 forty-eight hours in advance. applicant is subject to fine if work is started without scheduling a pre-inspection*** install 1 sidewalk under-drain(s) per city standards. no structure allowed beyond property line w/o enmi. if working within 25 feet of a monument you must comply with state law 8771 contact the inspector ... see more
Valuation:
N/A
Permit #:
CGS19064
Status:
issued
Fee:
$474
Permit Type:
N/A
Building Type:
N/A
Kitchen and bathroom renovation in a single-family dwelling on a shared lot. must comply with fire zone 2 requirements
Valuation:
$60,000
Permit #:
B2020-02513
Status:
final
Fee:
$3,663
Permit Type:
N/A
Building Type:
N/A
*revised description for in-progress-change (ipc) 1/4/2021 for square footage and layout* new two-story single family dwelling 5 bedrooms 4.5 bathrooms 3 064 sf habitable and 627 sf garage non-habitable. decks 1 150 sq. ft. retaining walls 1 887 sq. ft
Valuation:
N/A
Permit #:
BLD2018-01612
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
(b) - building alteration - 3+ residential units or commercial (building)
2021-07-24
Renovation of classroom including new toddler restroom and installation of new playscape and accessibility updates at existing head start school
Valuation:
$196,580
Permit #:
B1804860
Status:
expired
Fee:
$7,549
Permit Type:
N/A
Building Type:
N/A
(b) - building alteration - 3+ residential units or commercial (building)
2018-09-27
Remodel (e) warehouse space to include partitions for cannabis delivery business and accessible unisex toilet room. building demising wall for future tenant improvement. space under separate building application
Valuation:
$65,000
Permit #:
B1801921
Status:
final
Fee:
$3,647
Permit Type:
N/A
Building Type:
N/A
(e) - electrical - 3+ residential units or commercial (building)
2021-06-01
Electrical for tenant improvement for full service restaurant [bombera]. main service upgrade to 400 amps addition subpanel circuits switches receptacles ranges and air conditioning
Valuation:
N/A
Permit #:
E1903546
Status:
final
Fee:
$1,548
Permit Type:
N/A
Building Type:
N/A
(e) - electrical - 3+ residential units or commercial (building)
2019-01-31
Electrical for building shell including 400 amp service with 3 meters subpanels and to addition 2 ada restrooms in vacant space seismic upgrade of existing commercial building
Valuation:
N/A
Permit #:
E1900352
Status:
expired
Fee:
$859
Permit Type:
N/A
Building Type:
N/A
(m) - mechanical - 3+ residential units or commercial (building)
2018-09-27
Mechanical remodel (e) warehouse space to include partitions for cannabis delivery business and accessible unisex toilet room. building demising wall for future tenant improvement. space under separate building application
Valuation:
N/A
Permit #:
M1801306
Status:
final
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
(e) - electrical - 3+ residential units or commercial (building)
2018-09-27
Electrical remodel (e) warehouse space to include partitions for cannabis delivery business and accessible unisex toilet room. building demising wall for future tenant improvement. space under separate building application
Valuation:
N/A
Permit #:
E1802056
Status:
final
Fee:
$332
Permit Type:
N/A
Building Type:
N/A
(p) - plumbing - 3+ residential units or commercial (building)
2018-09-27
Plumbing remodel (e) warehouse space to include partitions for cannabis delivery business and accessible unisex toilet room. building demising wall for future tenant improvement. space under separate building application
Valuation:
N/A
Permit #:
P1801480
Status:
final
Fee:
$227
Permit Type:
N/A
Building Type:
N/A
New roof deck skylights and stairs from 3rd floor to the roof
Valuation:
$50,000
Permit #:
202101072259
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
(p) - plumbing - 3+ residential units or commercial (building)
2020-03-03
Plumbing for renovation of classroom including new toddler restroom and installation of new playscape and accessibility updates at existing head start school
Valuation:
N/A
Permit #:
P1901270
Status:
final
Fee:
$367
Permit Type:
N/A
Building Type:
N/A
(m) - mechanical - 3+ residential units or commercial (building)
2020-03-03
Mechanical for renovation of classroom including new toddler restroom and installation of new playscape and accessibility updates at existing head start school
Valuation:
N/A
Permit #:
M1901178
Status:
final
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
(e) - electrical - 3+ residential units or commercial (building)
2020-03-03
Electrical for renovation of classroom including new toddler restroom and installation of new playscape and accessibility updates at existing head start school
Valuation:
N/A
Permit #:
E1902073
Status:
final
Fee:
$227
Permit Type:
N/A
Building Type:
N/A
(b) - building alteration - 3+ residential units or commercial (building)
2021-06-22
Addition 2 ada restrooms in vacant space seismic upgrade of existing commercial building
Valuation:
$235,000
Permit #:
B1803710
Status:
expired
Fee:
$10,166
Permit Type:
N/A
Building Type:
N/A
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Rockridge Builders License info
Verified License
| License # | 324919 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Rockridge Builders at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
104
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Accredited Surety & Casualty Company Inc |
193
Permits
- Building permit records show that Rockridge Builders has worked on 193 permitted projects.
Rockridge Builders Employees
WH
William Paul Hinkamp
Sole Owner