Updated: Jun 30, 2026
Location and Projects
Address
3650 W 69th Pl, Westminster, CO, 80030
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Topside Plumber
Topside Inc, 3650 W 69th Pl, Westminster, CO (Owned by: David Stefanich/Tanya Bakum) holds a Contractor license and 31 other licenses according to the Parker license board.
Their BuildZoom score of 110 ranks in the top 4% of 55,949 Colorado licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Topside Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Topside Inc Services
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Topside Inc Contact Information
Phone Number: (303) 875-0826
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Address: 3650 W 69th Pl, Westminster, CO 80030
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Topside Inc Westminster
Quality
110
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Topside Inc has a BuildZoom score of 110, which places them above 96% of 55,949 contractors in Colorado.
Activity
|
26 projects
|
2025 |
|
29 projects
|
2024 |
|
28 projects
|
2023 |
Our building permit records indicate that Topside Inc has worked on at least
83.0 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
|
8 projects
|
Home Additions |
|
3 projects
|
New Constructions |
|
58 projects
|
Plumbing projects |
|
17 projects
|
Sewer laterals |
Analyzing permits over the last 4 years shows that Topside Inc mostly works on
plumbing project
and sewer lateral
projects.
Pricing
|
45 projects
|
< $5k |
|
3 projects
|
$5k-$20k |
The typical size of their permits is approximately $1,500. 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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Demolition scope of work: demolition of one (1) detached garage 625 sq ft 1-story 13ft in height above grade. all work must adhere to 2021 irc 2022 drc 2022 dbca 2010 dzc and u-tu-b zone district standards
Valuation:
N/A
Permit #:
2025-DEMO-0000016
Status:
issued
Fee:
$35
Permit Type:
N/A
Building Type:
N/A
2821 n meade st - single family residence - basement finish work entails a basement renovation to addition a conforming bedroom renovating an existing bathroom and the replacement of the stair from the first floor to the basement. the project is single family residential and will remain single family residential after the remodel
Valuation:
N/A
Permit #:
2024-SUDP-0000059
Status:
issued
Fee:
$425
Permit Type:
Addition & altera...
Building Type:
N/A
4811-4833 w 10th ave - 10th ave rowhomes - 3 sty w/det garages 12 unit 3 story townhomes and detached garages. 4811 4813 4815 4817 4819 4821 4823 4825 4827 4829 4831 4833
Valuation:
$1,500
Permit #:
2025-PLUMB-0005476
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
N/A
4811-4833 w 10th ave - 10th ave rowhomes - 3 sty w/det garages 12 unit 3 story townhomes and detached garages. 4811 4813 4815 4817 4819 4821 4823 4825 4827 4829 4831 4833
Valuation:
$1,500
Permit #:
2025-PLUMB-0005276
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
N/A
4811-4833 w 10th ave - 10th ave rowhomes - 3 sty w/det garages 12 unit 3 story townhomes and detached garages. 4811 4813 4815 4817 4819 4821 4823 4825 4827 4829 4831 4833
Valuation:
$1,500
Permit #:
2025-PLUMB-0005273
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
N/A
Xref# 2023-sudp-0002239 (duplex to sfr) 3436 n quivas st - duplex to single family residence new pool house and new detached garage with adu addition to existing single family house and construction of a new garage with adu above. reference zone lot amendment (2020-zlam-0000129) currently in progress. adu will be addressed once zone lot is approved
Valuation:
N/A
Permit #:
2023-SUDP-0002485
Status:
issued
Fee:
$575
Permit Type:
New
Building Type:
N/A
2415 n raleigh st - single family residence - 2nd sty addition 500 sf two story addition to existing single story brick structure in the sloans lake neighborhood. previously approved zoning submittal #2023-zone-0000774 log #2022-log-0016501
Valuation:
N/A
Permit #:
2023-SUDP-0002571
Status:
issued
Fee:
$155
Permit Type:
Addition & altera...
Building Type:
N/A
2212 & 2212 1/2 s franklin st - single family residence - new adu 2212 1/2 s franklin st - new addition off of existing garage plus converting existing garage into 864sqft total accessory dwelling unit
Valuation:
N/A
Permit #:
2023-SUDP-0003525
Status:
approved
Fee:
$5,685
Permit Type:
Addition & altera...
Building Type:
N/A
4811-4833 w 10th ave - 10th ave rowhomes - 3 sty w/bsmts-w/det garages 2 - 6 unit 3 story townhomes with basement and detached garages. 4811 4813 4815 4817 4819 4821 4823 4825 4827 4829 4831 4833
Valuation:
N/A
Permit #:
2023-SUDP-0002114
Status:
issued
Fee:
$60,775
Permit Type:
New
Building Type:
N/A
Install new 1.5 inch water line from meter pit to unit
Valuation:
$1,500
Permit #:
2025-PLUMB-0005145
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
Single family res...
Install new 1 inch water line from meter pit to house
Valuation:
$1,500
Permit #:
2025-PLUMB-0001538
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
Single family res...
Install new 1 inch water line from meter pit to house
Valuation:
$1,500
Permit #:
2025-PLUMB-0001256
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
Single family res...
Install new 1 inch line from meter to house and the adu
Valuation:
$1,500
Permit #:
2025-PLUMB-0000054
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
Single family res...
Install new 1.5 inch water line from meter to unit
Valuation:
$1,500
Permit #:
2025-PLUMB-0005147
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
Single family res...
Install new 1.5 inch water line from meter to unit
Valuation:
$1,500
Permit #:
2025-PLUMB-0005146
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
Single family res...
Install new 1 inch water line from meter to house
Valuation:
$1,500
Permit #:
2025-PLUMB-0003171
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
Single family res...
Single family residential addition of 553 sf demolition of existing detached garage construction of new detached garage 480 sf
Valuation:
N/A
Permit #:
2024-DEMO-0000301
Status:
final
Fee:
$143
Permit Type:
N/A
Building Type:
N/A
Install new 3/4 line from house to garage/adu
Valuation:
$1,000
Permit #:
2025-PLUMB-0001614
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
Single family res...
Remove and replace rear decks and stairs; addition entrance to basement. existing structure contains three apartments with rear porch deck and stairs which are deteriorating. replacing them with same size new deck; new stairs have been reconfigured to move them farther away from side property line. new basement access is to provide landlord maintenance access to common mechanical room... see more
Valuation:
N/A
Permit #:
2020-SUDP-0004450
Status:
issued
Fee:
$210
Permit Type:
Addition & altera...
Building Type:
N/A
Install new 3/4 line from house to adu
Valuation:
$1,000
Permit #:
2025-PLUMB-0005922
Status:
final
Fee:
$35
Permit Type:
N/A
Building Type:
Single family res...
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Verified License
BuildZoom confirmed this contractor's license
Topside Inc License info
Verified License
| License # | AEC9057 |
| Status | Active |
| Town | Parker |
| Type | Contractor |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Topside Inc at the The Town of Parker, Colorado.
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| City | Denver |
| Type | Demo B |
- BuildZoom verified this license was active as of June 2026.
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| City | Denver |
| Type | D Water Service |
- BuildZoom verified this license was active as of June 2026.
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| City | Denver |
| Type | Row Sewer Contractor |
- BuildZoom verified this license was active as of June 2026.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | AEC1326 |
| Status | Active |
| Town | Parker |
| Type | Contractor |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Topside Inc at the The Town of Parker, Colorado.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | D14002 |
| Status | Active |
| City | Littleton |
| Type | Contractor |
| Date Issued | 12-19-2025 |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Topside Inc at the The City of Littleton, CO.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | AEC2008 |
| Status | Active |
| Town | Parker |
| Type | Contractor |
- BuildZoom has not verified this license since March, 2023.
Verify this license's status for Topside Inc at the The Town of Parker, Colorado.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| City | Denver |
- When BuildZoom last verified this license, it had an expiration date of March, 2021. Check the current license status of Topside Inc with the City and County of Denver Community Planning and Development
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | LIC-0011302 |
| Status | Active |
| City | Boulder |
| Type | General Contractor, Right Of Way |
| Class | Class D-1 Demolition & Moving |
- When BuildZoom last verified this license, it had an expiration date of December, 2018. Check the current license status of Topside Inc with the Boulder Licensing Board
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 1326 |
| Status | Active |
| Town | Parker |
| Type | Contractor, General |
- When BuildZoom last verified this license, it had an expiration date of March, 2018. Check the current license status of Topside Inc with the The Town of Parker, Colorado
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 2028 |
| Status | Active |
| City | Arvada |
| Type | Row Contractor, General Utility |
- When BuildZoom last verified this license, it had an expiration date of March, 2018. Check the current license status of Topside Inc with the The City of Arvada, Colorado
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 2028, 2008, 1326 |
| Status | Active |
| City | Arvada |
| Type | Row Contractor, General Utility, Bid Contractor, Residential C, Contractor, General |
- When BuildZoom last verified this license, it had an expiration date of March, 2018. Check the current license status of Topside Inc with the The City of Arvada, Colorado
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 1856 |
| Status | Active |
| City | Arvada |
| Type | Bid Contractor, Roofing |
- When BuildZoom last verified this license, it had an expiration date of January, 2016. Check the current license status of Topside Inc with the The City of Arvada, Colorado
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 0009487 |
| Status | Active |
| City | Boulder |
| Type | General Contractor Class D-1 Demolition & Moving |
- When BuildZoom last verified this license, it had an expiration date of August, 2015. Check the current license status of Topside Inc with the Boulder Licensing Board
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 2008 |
| Status | Active |
| Town | Parker |
| Type | Contractor, General |
- BuildZoom has not verified this license since March, 2017.
Verify this license's status for Topside Inc at the The Town of Parker, Colorado.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | CMP00070 |
| Status | Active |
| City | Arvada |
| Type | Company |
- When BuildZoom last verified this license, it had an expiration date of July, 2012. Check the current license status of Topside Inc with the The City of Arvada, Colorado
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 15-1338 |
| Status | Inactive |
| Town | Castle Rock |
| Type | Single Trade |
- According to the Castle Rock Town, Colorado, 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 Topside Inc at the Castle Rock Town, Colorado.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CON-22-0185 |
| Status | Inactive |
| County | Boulder County |
| Type | Miscellaneous |
- According to the Boulder County Land Use Department, 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 Topside Inc at the Boulder County Land Use Department.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Aurora |
| Type | Demolition Contractor |
- According to the Aurora, Colorado, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Aurora |
| Type | Right Of Way Contractor |
- According to the Aurora, Colorado, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | D14029 |
| Status | Inactive |
| City | Littleton |
| Type | Contractor |
| Date Issued | 07-30-2025 |
- According to the The City of Littleton, CO, 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 Topside Inc at the The City of Littleton, CO.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | BONDED00326 |
| Status | Inactive |
| City | Littleton |
| Type | Contractor |
- According to the The City of Littleton, CO, 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 Topside Inc at the The City of Littleton, CO.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | B00406 |
| Status | Inactive |
| City | Littleton |
| Type | Class B |
- According to the The City of Littleton, CO, 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 Topside Inc at the The City of Littleton, CO.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Aurora |
| Type | Commercial Building Contractor |
- According to the Aurora, Colorado, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LCC201800704 |
| Status | Inactive |
| City | Thornton |
| Type | Class D Demolition/Mitigation, Class D Excavation/Grading |
- According to the Thornton City Development Contractor License, 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 Topside Inc at the Thornton City Development Contractor License.
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. If this is your business, please update your license status.
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. If this is your business, please update your license status.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | BONDED00166 |
| Status | Inactive |
| City | Littleton |
| Type | Bonded |
- According to the The City of Littleton, CO, 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 Topside Inc at the The City of Littleton, CO.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | B00080 |
| Status | Inactive |
| City | Littleton |
| Type | Class B |
- According to the The City of Littleton, CO, 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 Topside Inc at the The City of Littleton, CO.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | AEC5487 |
| Status | Inactive |
| City | Arvada |
| Type | Contractor |
- According to the The City of Arvada, Colorado, 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 Topside Inc at the The City of Arvada, Colorado.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | AEC2028 |
| Status | Inactive |
| City | Arvada |
| Type | Contractor |
- According to the The City of Arvada, Colorado, 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 Topside Inc at the The City of Arvada, Colorado.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | AEC1856 |
| Status | Inactive |
| City | Arvada |
| Type | Contractor |
- According to the The City of Arvada, Colorado, 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 Topside Inc at the The City of Arvada, Colorado.
This is a sample of licensing data; click here to access a complete history.
110
BuildZoom Score
Insured
| Insurer | Preferred Contractors |
895
Permits
- Building permit records show that Topside Inc has worked on 895 permitted projects.
Topside Inc Employees
AC
All Demolition Excavating Co
Owner
CG
Chad Gollnick
CE
Colorado Excavating
Contractor
CG
Cory Gollnick
CO
Cory Gollnick Owner
Owner
DD
Dallan Dirkmaat
DS
David Stefanich
Owner
DB
David Stefanich/Tanya Bakum
Owner
GE
Gollnick Construction Dba Colorado Excav
Owner
GR
Gollnick Construction Dba Colorado Excav (D 14, Row)
Owner
GD
Gollnick Construction Dba Colorado Excav D14
Owner
GR
Gollnick Construction Dba Colorado Excav Row
Owner
JR
Jensen Ronald
Owner
TC
Topside Roofing & Const
Owner
WP
William G Powell
Co Owner
WP
William Powel
Owner
WP
William Power
Owner