Updated: May 28, 2026
Location and Projects
Address
13 William Ct, Danville, CA, 94526
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Diablo State Construction
Diablo State Construction, 13 William Ct, Danville, CA holds a General Building license according to the California license board.
Their BuildZoom score of 109 ranks in the top 5% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Diablo State Construction, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Diablo State Construction Services
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Diablo State Construction Contact Information
Phone Number: (925) 876-8242
Address: 13 William Ct, Danville, CA 94526
Diablo State Construction Danville
Quality
109
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Diablo State Construction has a BuildZoom score of 109, which places them above 95% of 336,931 contractors in California.
Activity
|
2 projects
|
2025 |
|
1 project
|
2023 |
Our building permit records indicate that Diablo State Construction has worked on at least
3.0 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
|
Home Additions |
Analyzing permits over the last 4 years shows that Diablo State Construction mostly works on
home addition
projects.
Pricing
|
1 project
|
$100k-$250k |
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.
Diablo State Construction Reviews
5 out of 5 stars, based on
2
reviews
-
By AnonymousMay 30, 2015Remodel$150,0004 days
-
AnonymousMay 30, 2015
Ken went above and beyond when dealing with the remodel of our home. He kept us updated on timelines made sure any hiccups were handled swiftly. He's a character too, and the best contractor I've ever had the pleasure working with. I highly recommend his services, easy to work with and a great family guy that'll get the job done!
Building Permits by Diablo State Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
Conversion of existing 700 sq ft garage and adding 371 sq ft of conditined space to create an adu 1 071 total sq ft with outdoor sink bbq and trellis 12/6/2023 set back revision. lu 4/4/2024 revision. relocate washer and dryer closet to living area and windows in bathroom 2. lu
Valuation:
N/A
Permit #:
BIR23-008054
Status:
final
Fee:
$12,779
Permit Type:
N/A
Building Type:
N/A
652 sqft living area & new stairs
Valuation:
$50,000
Permit #:
B24-0466
Status:
final
Fee:
$6,583
Permit Type:
Single family
Building Type:
N/A
Addition of new detached adu approx 384sqft with porch of approx. 58sqft. ***field rev sub 1 6/20/25 - change hvac from central heat pump to mini-split*** existing single family dwelling address: 8024 rockford pl new adu address: 8026 rockford pl
Valuation:
$105,000
Permit #:
B24-2162
Status:
triage
Fee:
$8,615
Permit Type:
N/A
Building Type:
N/A
Convert portion of garage to living space 242 sf
Valuation:
$50,000
Permit #:
B21-015926
Status:
final
Fee:
$1,625
Permit Type:
N/A
Building Type:
N/A
Addition 402 rem 206 new garage 600 covered breezeway 136 w/pem
Valuation:
$186,930
Permit #:
B18-012703
Status:
final
Fee:
$4,082
Permit Type:
N/A
Building Type:
N/A
Remove existing windows and doors replace with new french doors and sliders addition new ramps approx 100 sq ft and addition approx. 520 sq ft rear deck to existing widen sliding doors per plans
Valuation:
N/A
Permit #:
BIAL19-001129
Status:
final
Fee:
$780
Permit Type:
N/A
Building Type:
N/A
Accessory dwelling unit 916 cov porch 190 w pem
Valuation:
$188,740
Permit #:
B18-013016
Status:
final
Fee:
$3,762
Permit Type:
N/A
Building Type:
N/A
Demolish single family residence
Valuation:
N/A
Permit #:
BP-2003964
Status:
complete
Fee:
$120
Permit Type:
N/A
Building Type:
N/A
Demolish single family residence void permit initiated in error
Valuation:
N/A
Permit #:
BP-2002933
Status:
withdrawn
Fee:
$120
Permit Type:
N/A
Building Type:
N/A
Truss calc submittal-addition (717sf) at rear of house for secondary dwelling unit
Valuation:
N/A
Permit #:
D180383-REV01
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building/residential/mir/miscellaneous residential
2019-01-09
Install new pergola in rear yard of existing residence 420 sq ft per plan
Valuation:
N/A
Permit #:
BIMIR19-000266
Status:
final
Fee:
$458
Permit Type:
N/A
Building Type:
N/A
Demolish existing kitchen and non bearing wall to family room. install new cabinets and appliances. demolish (2) bathrooms and install new tile vanity and fixtures. install ne 2040 velux skylight at entry and in master bedroom. replace (1) sliding door and (2) windows 11/24/2020 revision: built in cabinets install stackable washer and dryer addition sink in laundry room. close off wal... see more
Valuation:
N/A
Permit #:
BIAL20-008084
Status:
final
Fee:
$2,149
Permit Type:
N/A
Building Type:
N/A
Construct an approx. 325sqft detached adu in the rear yard to include kitchen bathroom bedroom and living area mechanical plumbing and electrical house address = 2384 silver oaks lane adu address = 2386 silver oaks lane
Valuation:
$72,000
Permit #:
B22-2141
Status:
final
Fee:
$6,895
Permit Type:
N/A
Building Type:
N/A
Enlarge existing (3) bedrooms and existing bathroom of (824sf). build new 436sf cellar for storage use only
reframe less than half of the roof
reroof entire roof with composition shingles
Valuation:
$230,000
Permit #:
B161408
Status:
final
Fee:
$5,606
Permit Type:
N/A
Building Type:
N/A
Building/residential/ad/single family addition
2005-09-19
1514 sq ft addition. new conditioned theatre in basement new family room and bathroom on 1st level and new master suite on 2nd level. major interior remodel and new attached garage.new porch in front of home and 2 new balconies
Valuation:
N/A
Permit #:
BI373826
Status:
final
Fee:
$7,101
Permit Type:
N/A
Building Type:
N/A
Addition (717sf) at rear of house for secondary dwelling unit upgrade main panel from 100amp to 200 amp
Valuation:
$96,000
Permit #:
D180383
Status:
final
Fee:
$8,378
Permit Type:
Add/alter single ...
Building Type:
N/A
Interior kitchen remodel to include 3 windows and 4 door replacement w/some size change//add walls to relocate laundry and half bath//change out cabinets and counters//elect panel upgrade//plumbing//mech
Valuation:
N/A
Permit #:
BI322269
Status:
final
Fee:
$1,452
Permit Type:
N/A
Building Type:
N/A
Interior bathroom remodels: reconfigure master and hall bathroom on main level. modify two (2) windows per plans 7/27/2017 revision to replace existing wiring in master bedroom jec 3/02/2018 revision to replace lost plans. see also biad17-001979 and bial17-007860. lma
Valuation:
N/A
Permit #:
BIAL17-001979
Status:
final
Fee:
$1,565
Permit Type:
N/A
Building Type:
N/A
Convert e personal storage to ag building w new ag addition 400amp service for lights plugs en 2000278
Valuation:
N/A
Permit #:
BP-2003251
Status:
complete
Fee:
$1,106
Permit Type:
N/A
Building Type:
N/A
Truss calculations submitted
Valuation:
N/A
Permit #:
D150430-REV01
Status:
final
Fee:
$123
Permit Type:
N/A
Building Type:
N/A
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Diablo State Construction License info
Verified License
| License # | 558861 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Diablo State Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
109
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
39
Permits
- Building permit records show that Diablo State Construction has worked on 39 permitted projects.
Ken went above and beyond when dealing with the remodel of our home. He kept us updated on timelines made sure any hiccups were handled swiftly. He's a character too, and the best contractor I've ever had the pleasure working with. I highly recommend his services, easy to work with and a great family guy that'll get the job done!