Updated: Jun 02, 2026
Location and Projects
Address
P O BOX 2468, Sebastopol, CA, 95473
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Green Arc Builders Concrete Contractor
Green Arc Builders, Sebastopol, Po Box 2468, Sebastopol, CA (Owned by: Marko Russell Castor) holds a General Building license according to the California license board.
Their BuildZoom score of 95 ranks in the top 22% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Green Arc Builders, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Green Arc Builders Services
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Green Arc Builders Contact Information
Phone Number: (707) 829-8880
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Address: P O BOX 2468, Sebastopol, CA 95473
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Legalize w/permit cargo container placement 20 on a concrete slab. response to violation vbu25-0049. foundation details on permit bld25-3126. also to be linked with bld25-3275 (3) cargo containers placed side by side on (1) concrete slab 27 x 24'6
Valuation:
N/A
Permit #:
BLD25-3278
Status:
issued
Fee:
$1,786
Permit Type:
N/A
Building Type:
N/A
(n) 26 x 24'-6 (637 sf) concrete slab with a retaining wall below 3'-0 in height around 40% of the slab. for the permanent placement of three 20 x 8 cargo containers to clear violations vbu25-0047 vbu25-0048 vbu25-0049 (under separate permits)
Valuation:
N/A
Permit #:
BLD25-1271
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Legalize w/permit cargo container placement 20. violation vbu25-0048. see permit bld25-3126 to see concrete details. (3) cargo containers to be placed side by side on one 27 x 24'6 slab
Valuation:
N/A
Permit #:
BLD25-3275
Status:
issued
Fee:
$1,786
Permit Type:
N/A
Building Type:
N/A
Legalize w/permit cargo container placement 20'x8 to include concrete slab with perimeter footing. vbu25-0047
Valuation:
N/A
Permit #:
BLD25-3126
Status:
issued
Fee:
$4,809
Permit Type:
N/A
Building Type:
N/A
New primary residence with attached garage and decks
Valuation:
N/A
Permit #:
BLD18-1271
Status:
final
Fee:
$56,670
Permit Type:
N/A
Building Type:
N/A
New detached garage
Valuation:
N/A
Permit #:
BLD18-1272
Status:
final
Fee:
$1,933
Permit Type:
N/A
Building Type:
N/A
Back up generator (already installed as of 2-22-22 per applicant)
Valuation:
N/A
Permit #:
BLD22-0424
Status:
final
Fee:
$294
Permit Type:
N/A
Building Type:
N/A
New 2 story single family dwelling (garage & shop/multi purpose room conditioned on 1st floor) ((bld11-1011 foundatio only))....with sprinklers
Valuation:
N/A
Permit #:
BLD13-2862
Status:
complete
Fee:
$12,436
Permit Type:
N/A
Building Type:
N/A
2017 complex fire 1705 sf single family dwelling w attd 300 sf garage 162 sf storage & 405 sf deck evt17-05220
Valuation:
N/A
Permit #:
BLD18-5058
Status:
final
Fee:
$6,441
Permit Type:
N/A
Building Type:
N/A
2017 complex fire single family dwelling 2361 sqft 586 sqft covered patio 55 sqft deck evt17-05026
Valuation:
N/A
Permit #:
BLD18-6149
Status:
final
Fee:
$7,275
Permit Type:
N/A
Building Type:
N/A
Interior remodel including reconfiguration of the kitchen and bathroom
Valuation:
N/A
Permit #:
B12-3371
Status:
final
Fee:
$1,389
Permit Type:
N/A
Building Type:
N/A
Sfd- kitch-bath-bedrm remodel
Valuation:
N/A
Permit #:
BLD11-0607
Status:
final
Fee:
$4,460
Permit Type:
N/A
Building Type:
N/A
2017 complex fire 720 sqft detached garage evt17-05026
Valuation:
N/A
Permit #:
BLD18-6151
Status:
final
Fee:
$1,256
Permit Type:
N/A
Building Type:
N/A
Addition - enlarge kitchen and bedroom (177 sq. ft.)
Valuation:
$60,000
Permit #:
B10-0117
Status:
final
Fee:
$1,321
Permit Type:
Single family dwe...
Building Type:
N/A
Single family dwelling 2nd floor bed & bathroom addition & remodel
Valuation:
N/A
Permit #:
BLD07-3362
Status:
final
Fee:
$1,586
Permit Type:
N/A
Building Type:
N/A
New 53 000gal water storage tank
Valuation:
N/A
Permit #:
BLD07-5099
Status:
final
Fee:
$864
Permit Type:
N/A
Building Type:
N/A
Underground propane tank
Valuation:
N/A
Permit #:
BLD11-0606
Status:
expired
Fee:
$73
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Green Arc Builders License info
Verified License
| License # | 545802 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Green Arc Builders at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
9
Permits
- Building permit records show that Green Arc Builders has worked on 9 permitted projects.
Green Arc Builders Employees
MC
Marko Russell Castor
Owner