Updated: Jan 21, 2026
Location and Projects
Address
303 BUTTERCUP CT, Sonoma, CA, 95476
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Duffy Construction
Duffy Construction, 303 Buttercup Ct, Sonoma, CA (Employee: Patrick Joseph Duffy) holds a General Building license according to the California license board.
Their BuildZoom score of 97 ranks in the top 18% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Duffy Construction, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Duffy Construction Services
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Duffy Construction Contact Information
Phone Number: (415) 385-7269
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Address: 303 BUTTERCUP CT, Sonoma, CA 95476
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Light sheetrock cabinets and one non-load bearing wall
Valuation:
N/A
Permit #:
B2022-0328
Status:
final
Fee:
N/A
Permit Type:
Residential
Building Type:
N/A
Bathroom remodel unit 1 ground floor. rewire replumbing retile replace fixtures and fittings relocate tub new door to hallway
Valuation:
$31,300
Permit #:
201301168122
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Repairs to damaged stucco in kind approx. 100 sqft. replace damaged wood using 1/2 cdx p.t. plywood in 10d nails at 6 o.c edges 12 o.c field. provide 2x blocking at panel edges if necessary
Valuation:
$15,000
Permit #:
200901291046
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Remodel upgrades to existing utility room below existing garage space create additional storage. new retaining wall. additional entryway (interior doorway)
Valuation:
$25,000
Permit #:
200910219481
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Whole house remodel all electric required
Valuation:
N/A
Permit #:
B2022-0343
Status:
final
Fee:
$11,895
Permit Type:
Major remodel-50%...
Building Type:
N/A
Revision to pa# 2010-0428-1215-reconfigure bathroom bedroom media room layout at attic & laundry
Valuation:
$1
Permit #:
201104043392
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Residential remodel & deck
Valuation:
N/A
Permit #:
B0404-092
Status:
final
Fee:
$4,262
Permit Type:
Alter-res
Building Type:
N/A
3 bathrooms to be remodel
Valuation:
N/A
Permit #:
B1010-045
Status:
final
Fee:
$1,482
Permit Type:
Alter-sfd
Building Type:
N/A
3 bathrooms to be remodel
Valuation:
N/A
Permit #:
E1010-039
Status:
final
Fee:
$102
Permit Type:
Alter-sfd
Building Type:
N/A
3 bathrooms to be remodel
Valuation:
N/A
Permit #:
P1010-019
Status:
final
Fee:
$269
Permit Type:
Alter-sfd
Building Type:
N/A
Renew permit - remodel of existing residence
Valuation:
N/A
Permit #:
B0603-025
Status:
final
Fee:
$160
Permit Type:
Alter-res
Building Type:
N/A
Installation of 1 shower pan
Valuation:
N/A
Permit #:
PP20120206233
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel of existing residence
Valuation:
N/A
Permit #:
E0208-030
Status:
final
Fee:
$52
Permit Type:
Alter-res
Building Type:
N/A
Remodel of existing residence
Valuation:
N/A
Permit #:
P0208-025
Status:
final
Fee:
$52
Permit Type:
Alter-res
Building Type:
N/A
Residential remodel & deck
Valuation:
N/A
Permit #:
E0406-026
Status:
final
Fee:
$52
Permit Type:
Alter-res
Building Type:
N/A
Residential remodel & deck
Valuation:
N/A
Permit #:
M0406-023
Status:
final
Fee:
$52
Permit Type:
Alter-res
Building Type:
N/A
Residential remodel & deck
Valuation:
N/A
Permit #:
P0406-019
Status:
final
Fee:
$52
Permit Type:
Alter-res
Building Type:
N/A
2 1/2 bathroom remodel
Valuation:
N/A
Permit #:
370117
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel of existing residence
Valuation:
N/A
Permit #:
B0207-004
Status:
expired
Fee:
$965
Permit Type:
Alter-res
Building Type:
N/A
Enlarge kit/bath
Valuation:
N/A
Permit #:
B0005-070
Status:
expired
Fee:
$581
Permit Type:
Alter-res
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Duffy Construction License info
Verified License
| License # | 717952 |
| 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 Duffy Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
97
BuildZoom Score
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $25,000 |
9
Permits
- Building permit records show that Duffy Construction has worked on 9 permitted projects.
Duffy Construction Employees
PD
Patrick Joseph Duffy
Sole Owner