Updated: Jun 18, 2026
Location and Projects
Address
P O BOX 6538, Concord, CA, 94524
Use our bidding system to
request a quote
Koester Construction Inc
Serving Concord, CA and the surrounding area, Koester Construction Inc specializes in residential and commercial projects. With 35 years of experience in the construction industry, the company has completed a range of work including remodels, renovations, and new builds. Projects have included single-family homes as well as multi-unit and commercial properties. Koester Construction Inc is equipped to manage all phases of construction, from initial planning through final inspection. The business is known for working closely with property owners, architects, and other professionals to ensure project requirements are met. Their portfolio includes additions, interior and exterior upgrades, and full-scale property overhauls in the East Bay. Koester Construction Inc operates throughout Contra Costa County and the greater Bay Area.
Koester Construction Inc Services
Start a project today:
Koester Construction Inc Contact Information
Phone Number: (925) 228-3444
Edit
Address: P O BOX 6538, Concord, CA 94524
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
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
Similar Contractors See more
242
BZ Score
$59K
Avg Project
-
Projects
193
BZ Score
$200K
Avg Project
-
Projects
246
BZ Score
$30K
Avg Project
-
Projects
Koester Construction Inc Reviews
BuildZoom hasn't received any reviews for Koester Construction Inc. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Hiring a contractor?
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 June 2026.
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