Updated: Jan 30, 2026
Location and Projects
Address
585 EL DORADO AVENUE, Oakland, CA, 94611
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Kobban Builders Construction
We are passionate about creating the space you want to live or work in. We also care deeply about good craftsmanship, beautiful, livable spaces, and green building, whether you are maintaining the craftsmanship of an older home, or pushing the envelope with forward-thinking design. We work with you and your architect to help you realize your vision, and minimize your ecological footprint at the same time.
Our approach is to build for the future. First and foremost, this means building to last, with quality materials and quality workmanship. It means investing in customer relationships – once we’ve done work for you, we hope to be your first call the next time you need something else done, large or small. We believe in incorporating an earth-friendly approach into what we build and how we build it, so that it doesn’t have to cost you more.
From BuildZoom: Kobban Builders, 585 El Dorado Ave, Oakland, CA (Employee: Gabriel Ortiz Kobban) holds a General Building license and 1 other license according to the California license board.
Their BuildZoom score of 104 ranks in the top 9% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Kobban Builders, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Kobban Builders Services
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Kobban Builders Contact Information
Phone Number: (510) 228-7924
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Address: 585 EL DORADO AVENUE, Oakland, CA 94611
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Additions to existing single family dwelling including: 49 sf upper floor rear addition to expand kitchen; dining area and addition new interior stair to connect to lower level; excavate 18 down and convert basement to 426 sf of habitable space for family room bedroom and full bathroom. addition approx. 9'x10 patio w/stairs and an approx. 5'x9 deck above it at upper story at rear. mis... see more
Valuation:
$250,000
Permit #:
RB1701591
Status:
final
Fee:
$8,539
Permit Type:
N/A
Building Type:
N/A
Plumbing to construct 554 sf. addition at main level including relocation of kitchen, dining room. add new bedroom, master bath, study. construct 444 sf. addition at lower level including new laundry, bonus room, interior stairway. construct new rear deck & half story side entrance. replace windows at side & rear elevations. ds180252
Valuation:
N/A
Permit #:
RP1900217
Status:
issued
Fee:
$850
Permit Type:
N/A
Building Type:
N/A
Mechanical to construct 554 sf. addition at main level including relocation of kitchen, dining room. add new bedroom, master bath, study. construct 444 sf. addition at lower level including new laundry, bonus room, interior stairway. construct new rear deck & half story side entrance. replace windows at side & rear elevations. ds180252
Valuation:
N/A
Permit #:
RM1900264
Status:
issued
Fee:
$417
Permit Type:
N/A
Building Type:
N/A
Electrical to construct 554 sf. addition at main level including relocation of kitchen, dining room. add new bedroom, master bath, study. construct 444 sf. addition at lower level including new laundry, bonus room, interior stairway. construct new rear deck & half story side entrance. replace windows at side & rear elevations. ds180252
Valuation:
N/A
Permit #:
RE1900365
Status:
issued
Fee:
$1,038
Permit Type:
N/A
Building Type:
N/A
Install toilets sinks tub/shower dishwasher garbage disposal clothes washer gas dryer gas range water heater and gas test for single family dwelling
Valuation:
N/A
Permit #:
RP1901751
Status:
issued
Fee:
$661
Permit Type:
N/A
Building Type:
N/A
Install bathroom fan dryer vent and range vent for single family dwelling
Valuation:
N/A
Permit #:
RM1901572
Status:
issued
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
Misc electrical repairs per housing report h2017-00251 dated 2/6/18 items: 1 2 5, 6 13 14 17 20 & 22. replace two (2) wall heaters in unit 402
Valuation:
N/A
Permit #:
B2018-01188
Status:
final
Fee:
$254
Permit Type:
N/A
Building Type:
N/A
1st floor - 108 sf addition at rear to enlarge and remodel kitchen and convert bedroom to dining room. 2nd floor - 1207 sf addition: 3 bedroom 2 bathroom office and laundry room and 379 sf secondary studio unit with balcony
Valuation:
$250,000
Permit #:
RB1503103
Status:
final
Fee:
$16,881
Permit Type:
N/A
Building Type:
N/A
Seismic upgrade at crawl space. property in fire zone 2
Valuation:
$25,000
Permit #:
B2021-00240
Status:
final
Fee:
$1,264
Permit Type:
N/A
Building Type:
N/A
Plumbing at 1st floor - 108 sf addition at rear to enlarge and remodel kitchen and convert bedroom to dining room. at 2nd floor - 1207 sf addition: 3 bedroom 2 bathroom office and laundry room and 379 sf secondary studio unit with balcony
Valuation:
N/A
Permit #:
RP1502565
Status:
final
Fee:
$1,138
Permit Type:
N/A
Building Type:
N/A
Mechanical 1st floor - 108 sf addition at rear to enlarge and remodel kitchen and convert bedroom to dining room. 2nd floor - 1207 sf addition: 3 bedroom 2 bathroom office and laundry room and 379 sf secondary studio unit with balcony
Valuation:
N/A
Permit #:
RM1501574
Status:
final
Fee:
$209
Permit Type:
N/A
Building Type:
N/A
Electrical 1st floor - 108 sf addition at rear to enlarge and remodel kitchen and convert bedroom to dining room. 2nd floor - 1207 sf addition: 3 bedroom 2 bathroom office and laundry room and 379 sf secondary studio unit with balcony. 12/01/15 addition 200 amp service upgrade & 23 circuits
Valuation:
N/A
Permit #:
RE1503245
Status:
final
Fee:
$1,012
Permit Type:
N/A
Building Type:
N/A
Windows install radiant heating. with a door for the entrance. replace windows on the front of building $35, 000 to $86, 304. sbb * * basement to habitable space remodel and pour new slab convert first floor floor) building new landing cove replace laundry and bathroom and remodel at 2nd low didn't attach nov to plans. total of upper floor, (legalize new bedroom project at counter. va... see more
Valuation:
$86,304
Permit #:
1100000857
Status:
ISSUED
Fee:
N/A
Permit Type:
Bp-3 (3 wk
Building Type:
N/A
Bathroom remodel ~ new stall shower sink & toilet install bathroom fan/light combo update electrical to include gfci receptacle & lighting tile wall & floor; relocate (1) fixed vinyl window on rear first story of residence by 3 feet with casement window (new trim to match); and reduce the size of (1) vinyl horizontal sliding side window at rear & replace with a smaller fiberglass case... see more
Valuation:
$7,500
Permit #:
CB13-0274
Status:
final
Fee:
$996
Permit Type:
N/A
Building Type:
N/A
Electrical to addition 2nd floor on single story house 874 sf 3 bedrooms 1 bathroom interior stairs; rebuild front porch. ds140247 12/11: reduce scope of work - front entry porch not performed on
Valuation:
N/A
Permit #:
RE1402741
Status:
final
Fee:
$476
Permit Type:
N/A
Building Type:
N/A
Plumbing to addition 2nd floor on single story house 874 sf 3 bedrooms 1 bathroom interior stairs; rebuild front porch. ds140247 12/11: reduce scope of work - front entry porch not performed on
Valuation:
N/A
Permit #:
RP1402346
Status:
final
Fee:
$600
Permit Type:
N/A
Building Type:
N/A
Mechanical to addition 2nd floor on single story house 874 sf 3 bedrooms 1 bathroom interior stairs; rebuild front porch. ds140247 12/11: reduce scope of work - front entry porch not performed on
Valuation:
N/A
Permit #:
RM1401684
Status:
final
Fee:
$234
Permit Type:
N/A
Building Type:
N/A
Replace 3 window with retrofit type in bathroom kitchen and pantry for single family dwelling. replace countertop and sink in kitchen and sink and toilet in 1/2 bathroom
Valuation:
$20,000
Permit #:
RB1503131
Status:
final
Fee:
$2,020
Permit Type:
N/A
Building Type:
N/A
Electrical for additions to existing single family dwelling including: 49 sf upper floor rear addition to expand kitchen; dining area and addition new interior stair to connect to lower level; excavate 18 down and convert basement to 426 sf of habitable space for family room bedroom and full bathroom. addition approx. 9'x10 patio w/stairs and an approx. 5'x9 deck above it at upper sto... see more
Valuation:
N/A
Permit #:
RE1703529
Status:
final
Fee:
$659
Permit Type:
N/A
Building Type:
N/A
Front deck and stair replacement and picked up same day by contractor post/rim connection skirt details. repair due to dry rot. revision submitted: waterproofing valuation inc from 3500 to 4000. dm2
Valuation:
$4,000
Permit #:
1300004097
Status:
ISSUED
Fee:
N/A
Permit Type:
Bp-1 (1 wk
Building Type:
N/A
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Kobban Builders License info
Verified License
| License # | 873229 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Kobban Builders 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 # | 5102287924 |
| Status | Active |
| City | Richmond |
| Type | Contractor, General |
| Business Type | Sole Ownership |
- When BuildZoom last verified this license, it had an expiration date of February, 2018. Check the current license status of Kobban Builders with the The City of Richmond, CA
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 | Wesco Insurance Company |
36
Permits
- Building permit records show that Kobban Builders has worked on 36 permitted projects.
Kobban Builders Employees
GK
Gabriel Ortiz Kobban
Sole Owner