Updated: Dec 12, 2025
Location and Projects
Address
100 WATERTROUGH RD, Sebastopol, CA, 95472
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Richard O Hamilton Construction
Richard O Hamilton at 100 WATERTROUGH RD, Sebastopol, CA 95472, held a General Contractor license (#231538) with the California contractors license board with an expiration date of 10-31-2020. We last verified the license was expired on 12-11-2025.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 336,931 California contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.
Richard O Hamilton Services
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Richard O Hamilton Contact Information
Phone Number: (707) 829-2583
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Address: 100 WATERTROUGH RD, Sebastopol, CA 95472
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This is a sample of this contractor's permits. Click here to access their complete permit history.
2017 sonoma complex fire - temp power pole 200 amps for well only at this time
Valuation:
$0
Permit #:
TEM17-0244
Status:
Issued
Fee:
$117
Permit Type:
N/A
Building Type:
Residential
Appeal adminstrative determination. request for a zoning permit for an appeal of an administrative determination to deny two kitchens in a single family dwelling unit on 2.0 acres
Valuation:
$0
Permit #:
ZPE01-0257
Status:
DONE
Fee:
$849
Permit Type:
N/A
Building Type:
N/A
Interior remodel partial main level and basement for single family home
Valuation:
$27,000
Permit #:
1401853
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Complete work started under bld01-3541 20% insp
Valuation:
N/A
Permit #:
BLD04-6724
Status:
final
Fee:
$1,594
Permit Type:
N/A
Building Type:
N/A
Demolition - convert garage to orgin/bathrm/water->heater/elect/fix hazardous-vbu99-0640
Valuation:
N/A
Permit #:
DEM00-0007
Status:
final
Fee:
$128
Permit Type:
N/A
Building Type:
N/A
Convert existing garage to second dwelling unit
Valuation:
N/A
Permit #:
B-152027
Status:
final
Fee:
$7,235
Permit Type:
N/A
Building Type:
N/A
To complete work started under grd01-0322 grading for pad and driveway (100%)
Valuation:
$0
Permit #:
GRD04-0319
Status:
FINALED
Fee:
$517
Permit Type:
N/A
Building Type:
N/A
Replace 14 windows (like for like) 32 u-value
Valuation:
$3,000
Permit #:
1401554
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Adndm to bld02-0976/inter kitchen rmdl/no occ chng
Valuation:
N/A
Permit #:
BLD02-0976
Status:
final
Fee:
$901
Permit Type:
N/A
Building Type:
N/A
Tenant improvement. - marek lorenc m.d. medical office
Valuation:
$25,000
Permit #:
B01-0202
Status:
final
Fee:
$479
Permit Type:
N/A
Building Type:
N/A
Cabana/pool house; not to be used as a residence
Valuation:
$0
Permit #:
SEW99-0396
Status:
ISSUED
Fee:
$332
Permit Type:
N/A
Building Type:
N/A
New swimming pool/spa-sfd
Valuation:
N/A
Permit #:
BLD99-0533
Status:
final
Fee:
$1,051
Permit Type:
N/A
Building Type:
N/A
New cabana/spa
Valuation:
N/A
Permit #:
BLD99-0534
Status:
final
Fee:
$1,211
Permit Type:
N/A
Building Type:
N/A
Reroof (09)
Valuation:
$2,600
Permit #:
R*1107306*1
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Re-roof
Valuation:
$9,000
Permit #:
R*169497*1
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building new construction additions alterations or sign
2010-11-19
Sign for kara's cupcakes
Valuation:
$3,000
Permit #:
B101394
Status:
canceled
Fee:
$185
Permit Type:
Sign
Building Type:
N/A
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Richard O Hamilton License info
Inactive License
| License # | 231538 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Richard O Hamilton at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
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BuildZoom Score
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Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
11
Permits
- Building permit records show that Richard O Hamilton has worked on 11 permitted projects.
Richard O Hamilton Employees
RH
Richard O Hamilton
Owner