Updated: Apr 25, 2026
Location and Projects
Address
5706A BUCKSKIN RD., Mariposa, CA, 95338
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John Duffy Construction Architect
Their BuildZoom score of 90 indicates that they are licensed or registered but we do not have additional information about them.
If you are thinking of hiring John Duffy Construction, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
John Duffy Construction Services
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John Duffy Construction Contact Information
Phone Number: (626) 390-9938
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Address: 5706A BUCKSKIN RD., Mariposa, CA 95338
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John Duffy Construction Reviews
3 out of 5 stars, based on
2
reviews
-
By CFebruary 21, 2012
-
By PatriciaSeptember 22, 2011
John Duffy did an extensive remodel of my back yard pergolas, kitchen and guest bath in the Fall of 2010. It was a pleasure to work with John. He accompanied me to find appliances, faucets,tile, etc and helped us to get the most bang for our buck. I never felt he was encouraging us to spend more than we wanted, but he knows how to do high-end work and the result is spectacular. All his workmen are personable, reliable and professional. You may not believe this but he even got the job ON TIME and on budget. I highly recommend this contractor!
Building Permits by John Duffy Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
Excavate basement to provide/relocate unit 151 addition new garage. provide new horizontal & vertical addition @ 1st & 2nd floors. new vertical addition & 3rd floor. complete structural upgrade throughout. addition new kitchen & bathrooms. ** maher: ordinance no# 155-13 required; route to health **
Valuation:
$825,000
Permit #:
201312113850
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Construct new horizontal/vertical rear addition at 2nd fl-provide 2 new bedrooms laundry at 1st fl new kitchen family room breakfast area at 2nd fl. provide 2 new bedrooms and bathrooms on 3rd floor walk out deck at front install new garage door convert storage area to one car garage
Valuation:
$500,000
Permit #:
200804169850
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Change out 7 window(s) and 2 door(s) (same size & type for residential buildings only). re-stucco; specific location: around new windows and doors. kitchen remodel (for residential buildings; no structural changes)
Valuation:
N/A
Permit #:
12016-30000-00457
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
1808 ashland ave.; new 1/story 603sf addition and remodel to an existing 1007sf1/story single family residence new 408sf detached garage new 321sf trellis
Valuation:
$238,461
Permit #:
12CBP0358
Status:
FINAL
Fee:
$4,022
Permit Type:
N/A
Building Type:
N/A
Window change-out (same size & type and location) for residential buildings. valuation to be verified by field inspector. dual glazing labeled and certified by national fenestration rating council (nfrc) is required for doors and windows replaced in all residential buildings three stories or less per section 152(b) of title 24
Valuation:
N/A
Permit #:
10016-20000-02881
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to permit #08014-30001-02235 to change out #6 windows (same size & type for residential buildings only) dual glazing labeled and certified by national fenestration rating council (nfrc) is required for doors and windows replaced in all residential buildings three stories or less per section 152(b) of title 24
Valuation:
N/A
Permit #:
08014-30002-02235
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Change out 7 windows and 8 doors (same size and location). re-stucco/sandblast entire building. residential kitchen and bathroom remodel-repair/replace only. no changes in walls or openings. combined with electrical and plumbing. drywall/plaster patch and paint
Valuation:
N/A
Permit #:
04016-30000-24816
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Remodel (e) downstairs bathroom and addition shower*** remodel existing kitchen enlarge opening between kitchen and dining room install new wall with french pocket doors between kitchen and den.*** replace existing hardwood floor at first floor. *** replace (e) doors with (n) doors ***interior renovation only
Valuation:
N/A
Permit #:
09016-30000-00357
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Change out #15 windows (same size & type for residential buildings only) dual glazing labeled and certified by national fenestration rating council (nfrc) is required for doors and windows replaced in all residential buildings three stories or less per section 152(b) of title 24
Valuation:
N/A
Permit #:
09016-30000-10364
Status:
expired
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Revision to pa#201409176562 partial foundation replacement installation of new crawl space foundation and slab on grade. new stair to crawl space
Valuation:
$120,000
Permit #:
201410179209
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Demolish closets in bedroom on 2nd floor and convert to master bedroom demolish portion of back bathroom and closet to expand closet replace all windows on the 2nd floor in kind. replace ex. fence in the rear yard with a new 8 foot wooden fence. replace gas range stove in kitchen. install hot tub in rear yard
Valuation:
$40,000
Permit #:
200709243490
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Supplemental permit to permit # 09044-30000-02047 to collect fees for 1 additional inspection per inspection correction notice. this permit does not authorize any additional work or extend the original expiration date
Valuation:
N/A
Permit #:
09044-30002-02047
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
To erect 4 stories 3 units apartments & garage
Valuation:
$1,097,000
Permit #:
200711309388
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Interior non structural remodel. addition bathroom to the 1st floor bedroom sitting area/gym to be converted to a bedroom/closet on the 2nd floor. relocate doors and addition laundry on the 2nd floor
Valuation:
N/A
Permit #:
10016-20000-10789
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
305 sq ft 1st floor addition to expand family room. 725 sq ft master bedroom/bathroom/walk-in closet 2nd floor addition interior remodel of existing two story single family dwelling
Valuation:
N/A
Permit #:
11014-30000-00221
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Install a new residential fire sprinkler system throughout residence per nfpa-13r. underground fire service by others under a sep. permit. ref. building. appl. 201206142648
Valuation:
$16,000
Permit #:
201507131346
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
(n) 1-story addition of master bedroom to (e) 1-story single family dwelling. (n) addition of foyer & covered porch. interior remodel including (n) master bathroom. (addition: 259 sq ft). part 1 of 2
Valuation:
N/A
Permit #:
08014-30000-02235
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Demolition fo (2) cantilever wood decks in rear of building & replacement w/(2) mew wood decks to exact same dimensions except w/2 continuous struct post to grade in rear yard (no cantilever)
Valuation:
$15,000
Permit #:
200708271005
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Supplemental to 10016-20000-10789 for omit bathroom from 1st fl bedroom & change laundry room to linen closet on 2nd fl
Valuation:
N/A
Permit #:
10016-30001-10789
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Install a new 2 underground fire service ref pa 2012 0614 2648; sprinklers done under 2015-0713-1346
Valuation:
$8,000
Permit #:
201509146888
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
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John Duffy Construction License info
License Not Verified
| License # | C28303 |
| Status | Active |
| State | California |
| Type | Architect |
| Business Type | Sole Ownership |
- When BuildZoom last verified this license, it had an expiration date of September, 2025. Check the current license status of John Duffy Construction with the California Architect License Board
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 822455 |
| 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 John Duffy Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
90
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $12,500 |
42
Permits
- Building permit records show that John Duffy Construction has worked on 42 permitted projects.
John Duffy Construction Employees
DJ
Duffy John J
Owner
JD
John Patrick Duffy
Sole Owner
MD
Monica Megan Duffy
Continuance
John Duffy did a kitchen remodel, but caused a major problem with the plumbing line for which we had to pay a large amount of money to repair. When contacted, Mr. Duffy was rude and extremely unresponsive to our dilemna, in addition to not taking ownership of the problem.