Updated: Jul 06, 2026
Location and Projects
Address
6300 Clayton St, Frederick, CO, 80530
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Gjkoeppen Construction, LLC
Gjkoeppen Construction, LLC, 6300 Clayton St, Frederick, CO (Employee: Graham Koeppen) holds a One And Two Family Residential license and 11 other licenses according to the Boulder County license board.
Their BuildZoom score of 101 ranks in the top 12% of 55,949 Colorado licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Gjkoeppen Construction, LLC, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Gjkoeppen Construction, LLC Services
Start a project today:
Custom Home Build
New Home Construction
Medium Multi-Family New Con...
Other Residential New Const...
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Medium Multi-Family Remodel...
Other Residential Remodel
Office Renovation
Restaurant Renovation
Retail Renovation
Other Commercial Renovation
Framing
Wood Fences
Backsplash and Countertops
Stonework
Tile Flooring
Other Stone and Tile
Garage Construction
Gutters and Flashing
Other Commercial New Constr...
Addition
Gjkoeppen Construction, LLC Contact Information
Phone Number: (720) 378-7660
Address: 6300 Clayton St, Frederick, CO 80530
Gjkoeppen Construction, LLC Frederick
Quality
101
88th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Gjkoeppen Construction, LLC has a BuildZoom score of 101, which places them above 88% of 55,949 contractors in Colorado.
Activity
|
4 projects
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Gjkoeppen Construction, LLC has worked on at least
6.0 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
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that Gjkoeppen Construction, LLC mostly works on
kitchen remodel
projects.
Pricing
|
2 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
|
3 projects
|
$100k-$250k |
The typical size of their permits is approximately $85,516. This graph shows the distribution of these job values.
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 Gjkoeppen Construction, LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Interior remodel to existing dwelling built in 1976 - includes expanding kitchen layout remove load bearing wall infill one exterior door replacing one window with new door replacing all windows and extension siding - 12 sf entry addition concrete steps and landing - electrical & plumbing included - 2/16/21 permit expiration warning emailed to owner and to applicant (trj)
Valuation:
$59,000
Permit #:
RSA20-0063
Status:
final
Fee:
$1,109
Permit Type:
N/A
Building Type:
N/A
Main floor remodel. remove load bearing wall reconfigure kitchen remodel bathroom and replace all windows
Valuation:
$101,031
Permit #:
B202300473
Status:
complete
Fee:
$4,162
Permit Type:
N/A
Building Type:
N/A
Kitchen and bathroom remodel including structural modification to remove load bearing post
Valuation:
$120,000
Permit #:
B202403740
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
650 sf wood frame addition on 680 sf unfinished basement and interior kitchen remodel to existing dwelling built in 1960 - includes utilities - addition includes living room w one 0-clearance fireplace
Valuation:
$85,864
Permit #:
RSA20-0353
Status:
final
Fee:
$1,687
Permit Type:
N/A
Building Type:
N/A
Basement finish - 1325sf - 2 bedrooms 3/4 bathroom theater room great room & wet bar
Valuation:
$107,769
Permit #:
B202205489
Status:
complete
Fee:
$4,470
Permit Type:
N/A
Building Type:
N/A
Remodel finished basement - new egress windows laundry closet wet bar shower/tub combo - no removal or disturbance of tile or drywall
Valuation:
$49,000
Permit #:
B202000314
Status:
complete
Fee:
$2,199
Permit Type:
N/A
Building Type:
N/A
Basement finish - bedroom bathroom theater room living room with wet bar gas fireplace unfinished storage. 1 finished bedroom already exists by previous permit
Valuation:
$93,584
Permit #:
B202002568
Status:
complete
Fee:
$3,754
Permit Type:
N/A
Building Type:
N/A
Basement finish - 666 sq ft to include 2 bedrooms 3/4 bathroom living room and unfinished storage. replace 2 windows/wells for egress compliance. new furnace and water heater
Valuation:
N/A
Permit #:
B201902761
Status:
complete
Fee:
$1,371
Permit Type:
N/A
Building Type:
N/A
Basement finish 550sf to include living area and bathroom
Valuation:
$49,988
Permit #:
B202204525
Status:
complete
Fee:
$2,590
Permit Type:
N/A
Building Type:
N/A
Partial basement finish to addition bedroom office and living room with wet bar. 953 sf finished area - 141 unfinished storage area
Valuation:
$60,000
Permit #:
B201805565
Status:
complete
Fee:
$1,661
Permit Type:
N/A
Building Type:
N/A
Basement finish -
Valuation:
$57,687
Permit #:
B202203240
Status:
complete
Fee:
$2,509
Permit Type:
N/A
Building Type:
N/A
Interior remodel
Valuation:
$70,000
Permit #:
BP-24-0647
Status:
complete
Fee:
$2,092
Permit Type:
N/A
Building Type:
N/A
Main floor remodel relocate kitchen remodel master bathroom enlarge master bedroom
Valuation:
$40,000
Permit #:
B201904351
Status:
complete
Fee:
$1,839
Permit Type:
N/A
Building Type:
N/A
Basement finish 1002 sf org uf base 1700 org total liv 1829 new total liv 2831
Valuation:
$53,806
Permit #:
B201705420
Status:
complete
Fee:
$2,619
Permit Type:
N/A
Building Type:
N/A
Interior/exterior remodel & new entry cover addition (hmr-16-0006)
Valuation:
$48,000
Permit #:
BP-16-1152
Status:
complete
Fee:
$1,593
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel
Valuation:
$30,000
Permit #:
B201807404
Status:
complete
Fee:
$1,439
Permit Type:
N/A
Building Type:
N/A
Master bathroom hall bathroom and kitchen remodel
Valuation:
N/A
Permit #:
BLDG19-8063
Status:
issued
Fee:
$1,039
Permit Type:
Interior remodel
Building Type:
N/A
Kitchen & bathroom remodel
Valuation:
N/A
Permit #:
BLDG18-7641
Status:
final
Fee:
$1,759
Permit Type:
Interior remodel
Building Type:
N/A
Residential - remodel master & guest bathroom
Valuation:
$12,390
Permit #:
18-RES0490
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace 180 sf deck same size
Valuation:
$15,682
Permit #:
B201705295
Status:
complete
Fee:
$791
Permit Type:
N/A
Building Type:
N/A
Gjkoeppen Construction, LLC Reviews
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Verified License
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Gjkoeppen Construction, LLC License info
Verified License
| License # | CON-16-0177 |
| Status | Active |
| County | Boulder County |
| Type | One And Two Family Residential |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for Gjkoeppen Construction, LLC at the Boulder County Land Use Department.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | GCB2216049 |
| Status | Active |
| City | Lafayette |
| Type | General Class B |
- When BuildZoom last verified this license, it had an expiration date of May, 2020. Check the current license status of Gjkoeppen Construction, LLC with the City of Lafayette
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | CL0694 |
| Status | Active |
| County | Larimer County, Co |
| Type | Class C |
- When BuildZoom last verified this license, it had an expiration date of July, 2020. Check the current license status of Gjkoeppen Construction, LLC with the Larimer County
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | LIC-0008479 |
| Status | Active |
| City | Boulder |
| Type | General Contractor |
| Class | Class B |
- When BuildZoom last verified this license, it had an expiration date of December, 2018. Check the current license status of Gjkoeppen Construction, LLC with the Boulder Licensing Board
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 28275 |
| Status | Active |
| City | Thornton |
| Type | Class C Residential |
- When BuildZoom last verified this license, it had an expiration date of October, 2015. Check the current license status of Gjkoeppen Construction, LLC with the Thornton City Development Contractor License
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 25965 |
| Status | Active |
| City | Thornton |
| Type | Class C Residential |
- When BuildZoom last verified this license, it had an expiration date of October, 2015. Check the current license status of Gjkoeppen Construction, LLC with the Thornton City Development Contractor License
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 0008479 |
| Status | Active |
| City | Boulder |
| Type | General Contractor Class B |
- When BuildZoom last verified this license, it had an expiration date of October, 2015. Check the current license status of Gjkoeppen Construction, LLC with the Boulder Licensing Board
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LCC202100170 |
| Status | Inactive |
| City | Thornton |
| Type | Class C Residential Contractor |
- According to the Thornton City Development Contractor License, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Gjkoeppen Construction, LLC at the Thornton City Development Contractor License.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 160631028 |
| Status | Inactive |
| City | Westminster |
| Type | General Contractor |
- According to the City of Westminster, Colorado, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Gjkoeppen Construction, LLC at the City of Westminster, Colorado.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Denver |
| Type | D Non Structural Residential Remodel |
- According to the City and County of Denver Community Planning and Development, the status of this license was at one point cancelled. However, this information may have changed.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Denver |
- According to the City and County of Denver Community Planning and Development, the status of this license was at one point cancelled. However, this information may have changed.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LCC2015061038 |
| Status | Inactive |
| City | Thornton |
| Type | Class C Residential Contractor |
- According to the Thornton City Development Contractor License, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Gjkoeppen Construction, LLC at the Thornton City Development Contractor License.
This is a sample of licensing data; click here to access a complete history.
101
BuildZoom Score
65
Permits
- Building permit records show that Gjkoeppen Construction, LLC has worked on 65 permitted projects.
Gjkoeppen Construction, LLC Employees
GK
Graham Koeppen