Updated: May 18, 2026
Location and Projects
Address
P O BOX 6538, Concord, CA, 94524
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Koester Construction Inc
Koester Construction Inc, Concord, Po Box 6538, Concord, CA (Owned by: John David Koester) holds a General Building license and 2 other licenses according to the California license board.
Their BuildZoom score of 98 ranks in the top 16% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Koester Construction Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Koester Construction Inc Services
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Koester Construction Inc Contact Information
Phone Number: (925) 228-3444
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Address: P O BOX 6538, Concord, CA 94524
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Koester Construction Inc Concord
Quality
98
84th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Koester Construction Inc has a BuildZoom score of 98, which places them above 84% of 336,931 contractors in California.
Activity
|
1 project
|
2024 |
Our building permit records indicate that Koester Construction Inc has worked on at least
1.0 project over the past 2 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.
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.
Building Permits by Koester Construction Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Kitchen remodel
Valuation:
$80,000
Permit #:
BIAL24-000449
Status:
issued
Fee:
$2,619
Permit Type:
N/A
Building Type:
N/A
Remodel master bathroom remove old tub and shower and replace with new shower new vanity toilet and new tile floor. replace 2 windows in bathroom like for like
Valuation:
N/A
Permit #:
BIAL18-009048
Status:
final
Fee:
$1,143
Permit Type:
N/A
Building Type:
N/A
Repair kitchen due to water damage w pe
Valuation:
$18,000
Permit #:
B18-012784
Status:
final
Fee:
$906
Permit Type:
N/A
Building Type:
N/A
Remodel hall bathroomm remove all sheet rock install new led lights over tub replace tub new shower valve install exhaust fan remove and replace window over tub
Valuation:
N/A
Permit #:
BIAL15-005424
Status:
final
Fee:
$868
Permit Type:
N/A
Building Type:
N/A
Master bathroom remodel - remove and replace - tub/shower to shower only with glass enclosure toilet electrical switch. unit #117
Valuation:
N/A
Permit #:
BIAL18-012341
Status:
final
Fee:
$608
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel. replace 1 window and addition 2 skylights per plan 3/21/16 - contractor submitted electrical plan
Valuation:
N/A
Permit #:
BIAL16-002232
Status:
final
Fee:
$1,733
Permit Type:
N/A
Building Type:
N/A
Master bathroom remodel/same layout/plumbing fixtures replacement/convert bathtub area to a shower area/high efficacy lighting
Valuation:
$17,000
Permit #:
B12-0944
Status:
final
Fee:
$424
Permit Type:
N/A
Building Type:
N/A
Permit value$17k master bathroom remodel master bathroom remodel/same layout/plumbing fixtures replacement/convert bathtub area to a shower area/high efficacy lighting
Valuation:
N/A
Permit #:
B12-0944
Status:
FINALED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel 3 baths per plan
Valuation:
N/A
Permit #:
BIAL15-002356
Status:
final
Fee:
$1,493
Permit Type:
N/A
Building Type:
N/A
Stucco on portions of (e) single family residence
Valuation:
$936
Permit #:
BP14-02428
Status:
final
Fee:
$43
Permit Type:
N/A
Building Type:
N/A
Interior repairs to kitchen sheetrock lights hvac
Valuation:
$19,058
Permit #:
B13-1223
Status:
final
Fee:
$406
Permit Type:
N/A
Building Type:
N/A
Closet addition. closet addition
Valuation:
$4,874
Permit #:
BLDR-2013-04173
Status:
final
Fee:
N/A
Permit Type:
Addition
Building Type:
N/A
Building new construction additions alterations or sign
2009-07-08
Master shower & toilet room only. r&r in-kind of tub surround toilet and fixtures. see attached scope of work
Valuation:
$9,947
Permit #:
B090667
Status:
final
Fee:
$677
Permit Type:
Ralt
Building Type:
N/A
Lot #31 dwelling w/garage 1 story 2 bedroom no disposal
Valuation:
$204,167
Permit #:
BP00-02645
Status:
final
Fee:
$3,290
Permit Type:
N/A
Building Type:
N/A
Single family residence 1 story w/garage 3 bedroom no disposal (lot #29)
Valuation:
$128,879
Permit #:
BP01-00040
Status:
final
Fee:
$2,641
Permit Type:
N/A
Building Type:
N/A
Single family residence w garage 1 1/2 story 4 bedroom no disposal
Valuation:
$247,934
Permit #:
BP01-01731
Status:
final
Fee:
$3,677
Permit Type:
N/A
Building Type:
N/A
Single family residence w/garage 1 story 4 bedroom no disp
Valuation:
$166,873
Permit #:
BP00-02712
Status:
final
Fee:
$2,953
Permit Type:
N/A
Building Type:
N/A
Single family residence 1 story 3 bedroom no disposal w/att garage
Valuation:
$116,434
Permit #:
BP01-01348
Status:
final
Fee:
$2,614
Permit Type:
N/A
Building Type:
N/A
Single family residence w/garage 1 story 4 bedroom no disposal
Valuation:
$147,351
Permit #:
BP01-00532
Status:
final
Fee:
$2,870
Permit Type:
N/A
Building Type:
N/A
Single family residence w/garage 1 story 4 bedroom no disposal
Valuation:
$172,419
Permit #:
BP01-00606
Status:
final
Fee:
$3,065
Permit Type:
N/A
Building Type:
N/A
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Koester Construction Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
Koester Construction Inc License info
Verified License
| License # | 682133 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation, Sole Ownership |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for Koester Construction Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 357830 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Corporation, 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 Koester Construction Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 811048 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Corporation, 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 Koester Construction Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
98
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
70
Permits
- Building permit records show that Koester Construction Inc has worked on 70 permitted projects.
Koester Construction Inc Employees
JK
John David Koester
Owner
KK
Katharine Lynn Koester
Officer
KK
Kelly Dennis Koester
Rmo / Ceo / Pres