Updated: Jun 02, 2026
Location and Projects
Address
13575 E 37th Ave, Denver, CO, 80239
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Sefnco Communications Site Work Contractor
Sefnco Communications Inc, 13575 E 37th Ave, Denver, CO (Owned by: Nall Scott E) holds a Miscellaneous license and 12 other licenses according to the Boulder County 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 Sefnco Communications Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Sefnco Communications Inc Contact Information
Phone Number: (303) 345-1442
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Address: 13575 E 37th Ave, Denver, CO 80239
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Sefnco Communications Inc Denver
Quality
110
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Sefnco Communications Inc has a BuildZoom score of 110, which places them above 96% of 55,949 contractors in Colorado.
Activity
|
181 projects
|
2025 |
|
121 projects
|
2024 |
|
202 projects
|
2023 |
Our building permit records indicate that Sefnco Communications Inc has worked on at least
504.0 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 |
|
5 projects
|
New Constructions |
|
3 projects
|
Commercial Renovations |
|
25 projects
|
Excavation and grading projects |
Analyzing permits over the last 4 years shows that Sefnco Communications Inc mostly works on
excavation and grading project
and home addition
projects.
Pricing
|
28 projects
|
< $5k |
|
7 projects
|
$5k-$20k |
|
8 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
The typical size of their permits is approximately $3,500. 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.
Building Permits by Sefnco Communications Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Beginning at the intersection of cr29 and cr 20 approximately 2259ft east on cr 20 beginning larimer county row s mastec will bore under the handy ditch approximately 330 south. the handy ditch permit was obtained by pvrea and mastec will be on the larimer county row for parking only and to tie into existing infrastructure
Valuation:
N/A
Permit #:
25-ROW0005
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Jb0001949272 | traffic control to splice and install ground rod. **during ground rod install both sidewalks cannot be blocked. one must remain open at all times.**
Valuation:
N/A
Permit #:
ROW2025-00078
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Jb#1110963 | bore 1395 for 48ct fiber overlash 270 dig and intercept upgrade and replace existing equipment splice - 45 potholes 5 bore pits 5 vaults 5 peds and 5 pavement cuts. **where bike lanes are closed. speed limit must be reduced to 25mph**
Valuation:
N/A
Permit #:
ROW2023-00865
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Emergency job - break concrete for new vault to repair fiber damage ****working hours of 9am - 330pm**** ****contractor must corrdinate with local businesses****
Valuation:
N/A
Permit #:
ROW2023-00685
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
1271300 | aerial fiber work overlash new cable upgrade two cabinets. **must coordinate with the apartment complex prior to occupancy of their parking lot**
Valuation:
N/A
Permit #:
ROW2023-00431
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
1330910 | aerial fiber work overlash 895 of cable place and upgrade two new cabinets. **if the bike lane is closed speed must be reduced to 25 mph**
Valuation:
N/A
Permit #:
ROW2023-00419
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Over-lash 600 of aerial cable. s. main st. at jessup st. - 1 lane closure north bound jessup st. at s. main st. - west bound closure with flagger s. main st. at jessup st. - turn lane closure south bound
Valuation:
N/A
Permit #:
BP-21-00154
Status:
final
Fee:
$24
Permit Type:
N/A
Building Type:
N/A
Occupancy to replace amp addition splice case upgrade node addition new mux
Valuation:
N/A
Permit #:
ROW2023-00173
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
04-06-2020***change order - added boring 2057 along the right of way pulling new coaxial cable and resplicing to relieve this area capacity issues. this is added work for permit bp-20-00560. ***pd n 42nd ave & longs peak st bore from existing rhino cabinet 351 in the east direction along the north side of longs peak st. 186 across tumbleweed dr and 582 nw through the rear easement to ... see more
Valuation:
$58,584
Permit #:
BP-20-00560
Status:
final
Fee:
$704
Permit Type:
N/A
Building Type:
N/A
924914 | bore 2015 new 48ct fiber add/upgrade new node vault and mux
Valuation:
N/A
Permit #:
ROW2023-00115
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Bore 655 overlash 2010 proof & pull addition vault & splice case
Valuation:
N/A
Permit #:
ROW2023-00116
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Occupancy to splice addition splice case and replace amp
Valuation:
N/A
Permit #:
ROW2023-00256
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
To bore (2)2 conduits 954 from the new building south to existing comcast plant to tie into at foley rd and penstemon dr
Valuation:
$1,500
Permit #:
BP-20-01380
Status:
final
Fee:
$54
Permit Type:
N/A
Building Type:
N/A
Bore 815 place 2-2 conduits pull cable overlash aerial cable pull cable through existing conduit 655
Valuation:
N/A
Permit #:
ROW2023-00276
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Occupancy to replace cabinet and addition vault
Valuation:
$5,000
Permit #:
PWTC2303-0095
Status:
issued
Fee:
$15
Permit Type:
N/A
Building Type:
N/A
Proof 2755 of existing conduit along e. 168th ave, lash new aerial line from 168th ave south to longs peak st bore 460 place conduit pull cable
Valuation:
$1,500
Permit #:
BP-21-00036
Status:
final
Fee:
$54
Permit Type:
N/A
Building Type:
N/A
Addition 1500 of new aerial
Valuation:
N/A
Permit #:
ROW23-00281
Status:
final
Fee:
$7,650
Permit Type:
N/A
Building Type:
N/A
Jb0001949272 - traffic control to splice
Valuation:
N/A
Permit #:
ROW2025-00079
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Bore 1585 place conduit pull 1910 of cable splice
Valuation:
$1,500
Permit #:
BP-22-00581
Status:
final
Fee:
$54
Permit Type:
N/A
Building Type:
N/A
No cost permit - 18-st-30 -72nd kipling-simms - comcast
Valuation:
$136,000
Permit #:
ROW21-01180
Status:
expired
Fee:
N/A
Permit Type:
Development
Building Type:
N/A
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Sefnco Communications Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Sefnco Communications Inc License info
License Not Verified
| License # | CON-23-0066 |
| Status | Active |
| County | Boulder County |
| Type | Miscellaneous |
- When BuildZoom last verified this license, it had an expiration date of May, 2026. Check the current license status of Sefnco Communications Inc with the Boulder County Land Use Department
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| Town | Parker |
| Type | Contractor |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Sefnco Communications 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 # | GCA2131025 |
| Status | Active |
| City | Lafayette |
| Type | General Class A |
- When BuildZoom last verified this license, it had an expiration date of April, 2021. Check the current license status of Sefnco Communications Inc with the City of Lafayette
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 May, 2020. Check the current license status of Sefnco Communications 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 # | CEN-13-07743 |
| Status | Active |
| City | Centennial |
| Type | Excavating Contractor |
- When BuildZoom last verified this license, it had an expiration date of May, 2015. Check the current license status of Sefnco Communications Inc with the Centennial Community Development Contractor Licensing
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Denver |
| Type | Row Excavator |
- 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 # | 1701086 |
| Status | Inactive |
| City | Westminster |
| Type | Public Way Contractor |
- According to the City of Westminster, 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 Sefnco Communications Inc at the City of Westminster, Colorado.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CON-19-0081 |
| Status | Inactive |
| County | Boulder County |
| Type | Commercial Or Residential Construction |
- 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 Sefnco Communications Inc at the Boulder County Land Use Department.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LIC-0011758-ROW |
| Status | Inactive |
| City | Boulder |
| Type | Right Of Way |
| Class | Right-of-Way |
- According to the Boulder Licensing 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 Sefnco Communications Inc at the Boulder Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LCC201700746 |
| Status | Inactive |
| City | Thornton |
| Type | Class D Antenna/Cable |
- 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 Sefnco Communications 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 | 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 # | BONDED00143 |
| 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 Sefnco Communications 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 # | AEC7203 |
| 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 Sefnco Communications 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
1.3K
Permits
- Building permit records show that Sefnco Communications Inc has worked on 1335 permitted projects.
Sefnco Communications Inc Employees
AG
Alyssa Graham
Owner
BB
Bethany Blair
Owner
KH
Kendra Hollingsworth
Customer Service Contact
LT
Loriann Torres
Owner
NE
Nall Scott E
Owner
SN
Scott Nall
SI
Sefnco Communications Inc
Applicant
SR
Sefnco Communications Inc Row
Applicant
SI
Sefnco Communications, Inc.
Contractor
SS
Seth Sherwood
Owner