Updated: Apr 04, 2026
Location and Projects
Address
917 W 9TH STREET, Antioch, CA, 94509
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Diaz Construction
Diaz Construction, 917 W 9th St, Antioch, CA (Employees: Giovanni Diaz, Luis Enrique Diaz, and Roberto Diaz Isarraraz) holds a General Building license according to the California license board.
Their BuildZoom score of 92 ranks in the top 32% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Diaz Construction, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Diaz Construction Services
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Diaz Construction Contact Information
Phone Number: (925) 243-5947
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Address: 917 W 9TH STREET, Antioch, CA 94509
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Diaz Construction Antioch
Quality
92
68th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Diaz Construction has a BuildZoom score of 92, which places them above 68% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
|
4 projects
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Diaz Construction has worked on at least
7.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
3 projects
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that Diaz Construction mostly works on
kitchen remodel
projects.
Pricing
|
2 projects
|
< $5k |
|
1 project
|
$5k-$20k |
|
3 projects
|
$20k-$50k |
The typical size of their permits is approximately $31,500. This graph shows the distribution of these job values.
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Rear horizontal addition of 271.93 sf to included a new bathroom and new bedroom added on to the existing home. convert (e) master bedroom into guest bedroom (104 sf). this project involves the demolition of exterior walls roofs interior partitions doors and windows. revision #1: replace (e) 200a panel in same location rear left exterior side (issued on 1/20/22)
Valuation:
$125,000
Permit #:
BD-2021-280658
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Scope of work: unit is on 2nd fl - r/r bathtub shower & fixtures * inspector cindy martinez spoke directly with contractor edgar diaz regarding 5/8 1 hr rated wall & 2022 cfm systems - to be field verified
Valuation:
N/A
Permit #:
2024 067280 MF
Status:
final
Fee:
N/A
Permit Type:
Condo
Building Type:
N/A
Single family (alteration/repair) - kitchen & bathroom remodel (flat)
2024-11-15
Remodel kitchen. remove partial height wall (vif); relocate cooking range. remodel both bathrooms (like for like). relocate pedestrian garage door to (n)opening. rewire kitchen and both bathrooms
Valuation:
$44,204
Permit #:
BD-2022-287032
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single family (alteration/repair) - repair/replace stucco
2024-10-21
Replace damages vinyl siding that has melted at the front of the house only- 2ns story. replace 2 windows (stairwell garage) all like for like
Valuation:
$6,000
Permit #:
BD-2023-291614
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Re-roof 24 squares remove old foam roof replace 100 amp main panel with 200 amp panel same location roof with tpo
Valuation:
$31,500
Permit #:
BD-2022-287137
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel: replace plumbing fixtures addition (n) island and remove wall between dining room and kitchen. remodel hallway bathroom. revision 1: change size of beam between kitchen and living room. (issued 6/19/19) revision 2: replace (e) 50 gal gas water heater (38k btu) at same location (garage). issued 8/20/19 revision 3: install in-wall electrical heater (6.8k btu) replace (e... see more
Valuation:
$15,868
Permit #:
BD-2019-271859
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Total 35sf remodel to 1-story sfd: remodel (e) master bathroom with no wall alteration. replace (2) windows in laundry room and (1) sliding patio door in dining room (same size and same location) m.e.p. included
Valuation:
$6,500
Permit #:
BD-2019-271530
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel - express
Valuation:
$39,000
Permit #:
173169
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Replace garage sub-panel
Valuation:
$500
Permit #:
173284
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
(e) 1-story sfd: remodel 210sf kitchen with wall removal between dining room and kitchen expand (e) wall opening between dining room and living room; replace (e) glass sliding door in dining room (same size and same location) new landing from dining room to rear yard; and electrical updates on new kitchen layout
Valuation:
$40,173
Permit #:
BD-2022-284911
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct patio 22'x13
Valuation:
$3,924
Permit #:
BP2018-418
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$29,000
Permit #:
BLD2003-70431
Status:
final
Fee:
$588
Permit Type:
N/A
Building Type:
N/A
Building new construction additions alterations or sign
2007-10-01
Roof repair
Valuation:
$10,000
Permit #:
B071247
Status:
final
Fee:
$139
Permit Type:
Ralt
Building Type:
N/A
No Description Available
Valuation:
$18,900
Permit #:
BLD2005-92349
Status:
final
Fee:
$220
Permit Type:
N/A
Building Type:
N/A
Single family (alteration/repair) - repair/replace drywall
2024-10-24
*partial to stop work* remove water heater and install tankless water heater with new receptacle. sheetrock and drywall exposed rear garage wall. drywall ceiling of garage to cover exposed
Valuation:
$4,000
Permit #:
BD-2022-285200
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Projects
Diaz Construction Reviews
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Diaz Construction License info
Verified License
| License # | 1090399 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Diaz Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
92
BuildZoom Score
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $15,000 |
11
Permits
- Building permit records show that Diaz Construction has worked on 11 permitted projects.
Diaz Construction Employees
GD
Giovanni Diaz
Director
LD
Luis Enrique Diaz
Director
RI
Roberto Diaz Isarraraz
Sole Owner
RI
Roberto Diaz Isarraraz
Sole Owner