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Updated: Mar 23, 2026
Location and Projects
Address
13084 JOHN BAUER AVE, Grass Valley, CA, 95945
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Koch & Koch Engineer
Koch & Koch Inc, 13084 John Bauer Ave, Grass Valley, CA (Employees: Eric Leonard Koch and Mei Lung Fore Koch) holds a General Engineering, General Building, Building Moving, Demolition, Electrical license and 1 other license according to the California license board.
Their BuildZoom score of 93 ranks in the top 27% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Koch & Koch Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Koch & Koch Inc Services
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Koch & Koch Inc Contact Information
Phone Number: (530) 432-4000
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Address: 13084 JOHN BAUER AVE, Grass Valley, CA 95945
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Grading 1000 cubic yards. import and stockpile 1000 cubic yards for future project under separate permit this permit includes up to 2 inspections. additional inspections will be charged at the current rate. final inspection is required
Valuation:
$2,000
Permit #:
163082
Status:
final
Fee:
$1,366
Permit Type:
N/A
Building Type:
N/A
Commercial - with plan check - alteration or addition
2015-06-04
Reconstruction of existing sewer lift station to include: temporary bypass of sewer flows demolition & removal of lift station and wet well new pumps controls piping manhole generator overflow tanks block walls chain link fence and sidewalk curb & gutter
Valuation:
$3,376,991
Permit #:
14BLD-0315
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New 100amp service panel for for public works intersection traffic lights improvement. permit is good for two inspections. additional inspections are $140.36 each. final inspection required
Valuation:
$10,000
Permit #:
15001545
Status:
expired
Fee:
$354
Permit Type:
N/A
Building Type:
N/A
Building/building/new building - r/single family dwelling
2004-06-24
Cdbg project: demolish existing dwelling (1050 sq.ft.) carport (115 sq.ft.) and rear deck (105 sq.ft.) and reconstruct new single family dwelling (890 sq.ft.) carport (222 sq.ft.) and deck (42 sq.ft.). install new 4 sewer lateral to kendall st. sewer main
Valuation:
$64,520
Permit #:
04BLD-0129
Status:
applied
Fee:
$2,218
Permit Type:
N/A
Building Type:
N/A
San diego international airport quieter home program -- work includes (but not limited to): remove and replace 43 existing windows (.58 maximum u- value and .40 maximum shgc) & 5 doors, the addition of new heating & air conditioning equipment, add new pull down stairs to attic, add new electrical service, remove existing knob & tube wiring from attic & replace with nm wiring and insul... see more
Valuation:
$73,800
Permit #:
471596
Status:
Cancelled - Expired
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/Alt 1 or 2 Fa...
New main electrical service for penn valley pipeline sewer station: 400amps; 3 phase. permit is good for 2 inspections
Valuation:
$15,000
Permit #:
171506
Status:
final
Fee:
$375
Permit Type:
N/A
Building Type:
N/A
San diego international airport quieter home program -- work includes (but not limited to): remove and replace 27 existing windows (.30 maximum u- value and .40 maximum shgc) & 3 doors, the addition of new heating & air conditioning equipment, add new electrical service panel, install pull down attic access stairs and add insulation in attic area to an r-38 value at an existing single... see more
Valuation:
$46,407
Permit #:
595960
Status:
Cancelled - Expired
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/Alt 1 or 2 Fa...
Building permit that includes (but is not limited to) replacement in kind of 5 windows (.30 maximum u- value and .40 maximum shgc) & 2 doors, add smoke detectors to units and other work as stated on plans, for one unit in an existing multi-family apartment building, being upgraded to limit interior noise under the san diego airport quieter home program (sponsored by the san diego airp... see more
Valuation:
$9,450
Permit #:
578570
Status:
Cancelled - Expired
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/Alt 3+, No Ch...
Building permit that includes (but is not limited to) replacement in kind of 3 windows (.30 maximum u- value and .40 maximum shgc) & 2 doors, add smoke detectors to units and other work as stated on plans, for one unit in an existing multi-family apartment building, being upgraded to limit interior noise under the san diego airport quieter home program (sponsored by the san diego airp... see more
Valuation:
$7,800
Permit #:
578567
Status:
Cancelled - Expired
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/Alt 3+, No Ch...
Building permit that includes (but is not limited to) replacement in kind of 6 windows (.30 maximum u- value and .40 maximum shgc) & 2 doors, add smoke detectors to units and other work as stated on plans, for one unit in an existing multi-family apartment building, being upgraded to limit interior noise under the san diego airport quieter home program (sponsored by the san diego airp... see more
Valuation:
$10,125
Permit #:
578564
Status:
Cancelled - Expired
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/Alt 3+, No Ch...
Building permit that includes (but is not limited to) replacement in kind of 5 windows (.30 maximum u- value and .40 maximum shgc) & 2 doors, add smoke detectors to units and other work as stated on plans, for one unit in an existing multi-family apartment building, being upgraded to limit interior noise under the san diego airport quieter home program (sponsored by the san diego airp... see more
Valuation:
$9,325
Permit #:
578561
Status:
Cancelled - Expired
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/Alt 3+, No Ch...
Building permit that includes (but is not limited to) replacement in kind of 3 windows (.30 maximum u- value and .40 maximum shgc) & 2 doors, add smoke detectors to units and other work as stated on plans, for one unit in an existing multi-family apartment building, being upgraded to limit interior noise under the san diego airport quieter home program (sponsored by the san diego airp... see more
Valuation:
$7,800
Permit #:
578558
Status:
Cancelled - Expired
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/Alt 3+, No Ch...
Building permit that includes (but is not limited to) replacement in kind of 6 windows (.30 maximum u- value and .40 maximum shgc) & 2 doors, add smoke detectors to units and other work as stated on plans, for one unit in an existing multi-family apartment building, being upgraded to limit interior noise under the san diego airport quieter home program (sponsored by the san diego airp... see more
Valuation:
$10,350
Permit #:
578555
Status:
Cancelled - Expired
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/Alt 3+, No Ch...
Cambridge booster pumping station upgrades pw 365-t3
Valuation:
$651,956
Permit #:
B1309-0053
Status:
issued
Fee:
$7,504
Permit Type:
Miscellaneous
Building Type:
N/A
Ground mount solar array located west of the granny house. 34 modules with micro inverters. 8.67 kw. permit is good for two inspections. additional inspections are $136.28 each. final inspection required
Valuation:
$30,000
Permit #:
14000210
Status:
complete
Fee:
$345
Permit Type:
N/A
Building Type:
N/A
New single story metal ag building with electrical and plumbing for hosebib. underslab plumbing for 2 bathrooms for future wine tasting room. located at the southeast corner of the property. per ron white. 8/28/08
Valuation:
$60,000
Permit #:
08001680
Status:
complete
Fee:
$1,659
Permit Type:
N/A
Building Type:
N/A
Ag pole to install new ag pole 200 amp panel underground service to feed a well for undeveloped property. permit is good for two inspections. additional inspections are $125.78 each. final inspection required
Valuation:
$800
Permit #:
12000330
Status:
complete
Fee:
$317
Permit Type:
N/A
Building Type:
N/A
As-built grading 900 cubic yards of cut-fill grading for building pad in the sw portion of the property located near the end and top of the ridge line. plan review fees under 06004229
Valuation:
N/A
Permit #:
07000324
Status:
expired
Fee:
$630
Permit Type:
N/A
Building Type:
N/A
Addition new detached metal garage for sheriff department evidence storage/motor vehicle (u-1) 576 sq.ft. no hazardous materials stored. no wood construction throughout the building
Valuation:
N/A
Permit #:
07010702
Status:
complete
Fee:
$1,445
Permit Type:
N/A
Building Type:
N/A
Grading and driveway separated from barn permit 06004229. 2200 ft of driveway and 1096 cu yds of grading. plan check fees through 2-2-07 paid on 06004229. see notes
Valuation:
N/A
Permit #:
07000247
Status:
canceled
Fee:
$492
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Koch & Koch Inc License info
Verified License
| License # | 793724 |
| Status | Active |
| State | California |
| Type | General Engineering, General Building, Building Moving, Demolition, Electrical |
| Business Type | Corporation |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Koch & Koch 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 # | 613994 |
| Status | Inactive |
| State | California |
| Type | General Building, General Engineering, Building Moving, Demolition, Electrical |
| Business Type | Corporation |
- 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 Koch & Koch Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
Bonded
| Bonded Agent | Indemnity Company Of California |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Midwest Employers Casualty Company |
37
Permits
- Building permit records show that Koch & Koch Inc has worked on 37 permitted projects.
Koch & Koch Inc Employees
EK
Eric Leonard Koch
Rmo/Ceo/Pres
MK
Mei Lung Fore Koch
Ceo/President