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Updated: Feb 20, 2026
Location and Projects
Address
61 W Oak Knoll Dr, San Anselmo, CA, 94960
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Ag Construction Dba Corner Stone Development Photos
Ag Construction Dba Corner Stone Development
AG Construction is a San Francisco-based general contracting company specializing in residential and commercial applications. Our team of professionals will follow each step of your project, from initial design to the finished product. AG Construction is dedicated to integrity in all aspects of the business –with customers, employees, subcontractors, suppliers, and the community. Contact us today to discuss your construction and maintenance needs.
From BuildZoom: Ag Construction Dba Corner Stone Development, 61 W Oak Knoll Dr, San Anselmo, CA holds a General Building license according to the California license board.
Their BuildZoom score of 119 ranks in the top 1% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Ag Construction Dba Corner Stone Development, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Ag Construction Dba Corner Stone Development Services
Start a project today:
Custom Home Build
New Home Construction
Medium Multi-Family New Con...
Other Residential New Const...
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Other Residential Remodel
Office Renovation
Restaurant Renovation
Retail Renovation
Other Commercial Renovation
Roofing
Electrical Work
Siding
Stucco and Exterior Plastering
Other Exteriors
Decks and Porches
Doors and Windows
Framing
Wood Fences
Other Carpentry
Drywall
Interior Plaster
Flatwork Concrete
Foundations
Other Concrete
Garage Construction
Overhead Doors
Seismic Retrofit
Gutters and Flashing
Skylights
Cabinets
Finish Carpentry
Ag Construction Dba Corner Stone Development Contact Information
Phone Number: (415) 846-6668
Address: 61 W Oak Knoll Dr, San Anselmo, CA 94960
Building Permits by Ag Construction Dba Corner Stone Development
This is a sample of this contractor's permits. Click here to access their complete permit history.
Construct 4 bedroom 2500 sq ft single family residence 676 sq ft attached garage, 24 sq ft p/p
Valuation:
$158,409
Permit #:
K201909478
Status:
final
Fee:
$7,277
Permit Type:
N/A
Building Type:
N/A
Interior remodel replace beams reconfigure ex garage door portal add14 x14 sq ft patio cover 53 x 10 sq ft deck window replacements hvac replacement re roof and minor electrical @ ex single family residence
Valuation:
$59,075
Permit #:
K201902044
Status:
final
Fee:
$780
Permit Type:
N/A
Building Type:
N/A
6 x24 laundry room addition replace portions of drywall insulation electrical plumbing repair 22 windows new island with sink and electrical new master shower and 80 sq ft deck @ ex single family residence
Valuation:
$9,097
Permit #:
K201608501
Status:
final
Fee:
$174
Permit Type:
N/A
Building Type:
N/A
# scanned # kitchen remodel addition laundry room new master bedroom bathroom new bedroom. addition new skylight at hall bathroom on 2nd floor. remove fireplace and chimney on 2nd floor. convert downstairs bedroom to office by removing closet revision #1 - wcm - 1/11/19 - approved (n) laundry removed from scope of work. approved (n) furnace on 2nd floor changed to closet. approved sky... see more
Valuation:
N/A
Permit #:
BLD2018-01350
Status:
final
Fee:
$4,047
Permit Type:
N/A
Building Type:
N/A
Revision to building permit # 201602048876. - previously proposed double hung wood windows on front facade to be single hung aluminum clad wood windows with ogee lugs. - previously proposed double hung wood windows to be aluminum casement and awning windows not visible from front street
Valuation:
$1
Permit #:
201708084268
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
New full bathroom new shower pan relocate toilet from half bathroom. 1 kitchen plumbing upgrade
Valuation:
N/A
Permit #:
PP20220913992
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
1st fl: relocate bathroom laundry. 2nd fl: remodel kitchen & bathroom. addition 2 bathroom
Valuation:
N/A
Permit #:
PP20220308543
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Supplemental permit to pa#201602048876 to clarify the actual scope of work as described on plan. revision to pa #201602048876 for there is no need to install the sprinkler system throughout building as it is not code required
Valuation:
$1
Permit #:
201708165018
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Remove 1 and relocate 1 non bearing wall minor electrical 2 bathroom remodels install kitchen island @ ex single family residence
Valuation:
$27,000
Permit #:
K201903509
Status:
final
Fee:
$344
Permit Type:
N/A
Building Type:
N/A
1750 cu yds designer cert grading for future single family residence ref k201909478
Valuation:
N/A
Permit #:
K202001919
Status:
final
Fee:
$179
Permit Type:
N/A
Building Type:
N/A
To replace three existing wood windows at the front facade (upper level) with new aluminum clad wood windows to match in size location and operation. og lugs to be replicated. complies w complaint 201567442 201566534
Valuation:
$3,500
Permit #:
201711083514
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Addition 1/2 plywood inside the house all around exterior wall& install insulation inside the house. rebuilt (e) deck with staircase at rear of building (size approx 13'-0 x 5--0")
Valuation:
$20,000
Permit #:
201803022650
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Replace siding on the front and side with hardie siding. replace 3 side windows in-kind with aluminum wood clad. comply with dbi complaint 201566534 item #4 and #9
Valuation:
$15,000
Permit #:
201704214634
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Install furnace & flue pipe
Valuation:
N/A
Permit #:
PM20220308544
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New sub panel 2 led lights 5 new circuits for kitchen one ciruit for hvac equipment
Valuation:
N/A
Permit #:
E201902259403
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Repair replce 6 ft e dryrot studwall and siding at southwest corner front reframing e front bay window support
Valuation:
$20,000
Permit #:
201809130002
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Replace cabinet + sinks kitchen upgrade electrical and plumbing
Valuation:
$10,000
Permit #:
201902253775
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Remodel bathroom in kind. no wall moving no alteration of wall window and door
Valuation:
$15,000
Permit #:
201804176611
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Change angle stops new faucet appliances gas stovve
Valuation:
N/A
Permit #:
PP20190225433
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Bathroom remodeling install new bathroom vanity sink and water closet
Valuation:
N/A
Permit #:
PP20180417625
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Ag Construction Dba Corner Stone Development License info
Verified License
| License # | 930085 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Ag Construction Dba Corner Stone Development at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
119
BuildZoom Score
Insured
| Insurer | Hunters Insurance |
| Insured up to | $100,000 |
Bonded
| Bonded Agent | Business Alliance |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Clear Springs |
Premium
- Ag Construction Dba Corner Stone Development is a verified BuildZoom Premium contractor.
205
Permits
- Building permit records show that Ag Construction Dba Corner Stone Development has worked on 205 permitted projects.