Updated: Apr 29, 2026
Location and Projects
Address
3660 GRANZOTTO, Concord, CA, 94521
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DAVID M BLAIR Flooring Contractor
DAVID M BLAIR at 3660 GRANZOTTO, Concord, CA 94521, held a Flooring Contractor license (#359870) with the California contractors license board with an expiration date of 07-31-2020. We last verified the license was expired on 04-28-2026.
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 bidding system to be easily matched to qualified, licensed professionals in your area.
DAVID M BLAIR Services
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DAVID M BLAIR Contact Information
Phone Number: (925) 689-2306
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Address: 3660 GRANZOTTO, Concord, CA 94521
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DAVID M BLAIR Concord
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are DAVID M BLAIR, click “This is My Business” to update your information.
Activity
|
1 project
|
2025 |
Our building permit records indicate that DAVID M BLAIR has worked on at least
1.0 project over the past year.
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.
Pricing
|
1 project
|
$50k-$100k |
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.
Otay mesa. building electrical mechanical & plumbing permits for interior remodel of existing tenant commercial space. work to include new partitions new ceiling and associated electrical mechanical and plumbing zone: il-3-1. geo haz 53. esl's. cpioz-a
Valuation:
$98,420
Permit #:
1431533
Status:
complete
Fee:
$3,652
Permit Type:
Add/alt tenant im...
Building Type:
N/A
Operation of a medical marijuana consumer cooperative in a 1,406 square foot tenant space within an existing 14,090 square foot, one-story commercial building on a 2.47 acre property
Valuation:
$0
Permit #:
1298258
Status:
Issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
2nd year background permit
Valuation:
$0
Permit #:
1816902
Status:
Issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install new window doors and partitions in an existing h-6 occupancy area for a testing lab
Valuation:
$156,959
Permit #:
2011 009266 CI
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
The scope of work consists of the remodel o fan existing f-1 test area. work consists of the demolition of interior walls and relocation of lab equipment
Valuation:
$0
Permit #:
2003 108468 CI
Status:
Expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Otay mesa. building electrical mechanical & plumbing permits for interior remodel of existing tenant commercial space. work to include new partitions new ceiling and associated electrical mechanical and plumbing zone: il-3-1. geo haz 53. esl's. cpioz-a
Valuation:
N/A
Permit #:
1431536
Status:
complete
Fee:
$2,351
Permit Type:
Add/alt tenant im...
Building Type:
N/A
Otay mesa. building electrical mechanical & plumbing permits for interior remodel of existing tenant commercial space. work to include new partitions new ceiling and associated electrical mechanical and plumbing zone: il-3-1. geo haz 53. esl's. cpioz-a
Valuation:
N/A
Permit #:
1431534
Status:
complete
Fee:
$2,351
Permit Type:
Add/alt tenant im...
Building Type:
N/A
Otay mesa. building electrical mechanical & plumbing permits for interior remodel of existing tenant commercial space. work to include new partitions new ceiling and associated electrical mechanical and plumbing zone: il-3-1. geo haz 53. esl's. cpioz-a
Valuation:
N/A
Permit #:
1431539
Status:
complete
Fee:
$2,351
Permit Type:
Add/alt tenant im...
Building Type:
N/A
Ab-dem vdmo: sfd/mf demolish exist illegal residence
2016-01-11
Legalize by demolish out building
Valuation:
$0
Permit #:
DEM16-0001
Status:
FINALED
Fee:
$200
Permit Type:
N/A
Building Type:
N/A
Voluntary foundation bolting per la city standard detail.
Valuation:
$2,000
Permit #:
82976
Status:
FINAL
Fee:
$165
Permit Type:
N/A
Building Type:
N/A
Alteration of existing area to support equipment installation
Valuation:
$262,500
Permit #:
2003 107145 CI
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Dwell 2275sf attach garage 660sf dwell r-3 wood 2299 48049 prigr m-1 wood 726 5372 prch pr v-n 70 273 air
Valuation:
$0
Permit #:
183302
Status:
FINALED
Fee:
$797
Permit Type:
N/A
Building Type:
N/A
Supplemental permit to permit #17044-30000-06841 for vernt systems avove six wall furnaces
Valuation:
N/A
Permit #:
17044-30001-06841
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
E pmt 20416-electrical upgrade to 200 amp
Valuation:
N/A
Permit #:
406722
Status:
complete
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
1 gas service, 3 sprinkler valves
Valuation:
$0
Permit #:
65777
Status:
FINAL
Fee:
$264
Permit Type:
N/A
Building Type:
N/A
*void* accessory dwelling unit (500 sf)
Valuation:
$75,435
Permit #:
RBLD2025-00480
Status:
canceled
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
Residential addition alteration - accessory dwelling unit
2025-11-19
Accessory dwelling unit (500 sf)
Valuation:
$75,435
Permit #:
RALT2025-00274
Status:
triage
Fee:
$257
Permit Type:
N/A
Building Type:
N/A
Adu (500 sf)
Valuation:
$100,000
Permit #:
RBLD2025-00443
Status:
triage
Fee:
$257
Permit Type:
N/A
Building Type:
N/A
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DAVID M BLAIR License info
Inactive License
| License # | 359870 |
| Status | Inactive |
| State | California |
| Type | Flooring And Floor Covering |
| 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 DAVID M BLAIR at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
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- *No active license on file. If you are DAVID M BLAIR, click “This is My Business” to update your information.
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
9
Permits
- Building permit records show that DAVID M BLAIR has worked on 9 permitted projects.
DAVID M BLAIR Employees
DB
David M Blair
Owner