Updated: Jun 10, 2026
Location and Projects
Address
6600 W 6TH AVE, Lakewood, CO, 80214
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Martinez Underground Plumber
Martinez Underground Inc, 6600 W 6th Ave, Lakewood, CO (Owned by: Frank Matrtinez) holds a Row Sidewalk license and 6 other licenses according to the Denver license board.
Their BuildZoom score of 102 ranks in the top 11% of 55,949 Colorado licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Martinez Underground Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Martinez Underground Inc Services
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Martinez Underground Inc Contact Information
Phone Number: (720) 855-5787
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Address: 6600 W 6TH AVE, Lakewood, CO 80214
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Martinez Underground Inc Lakewood
Quality
102
89th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Martinez Underground Inc has a BuildZoom score of 102, which places them above 89% of 55,949 contractors in Colorado.
Activity
|
6 projects
|
2025 |
|
17 projects
|
2024 |
|
4 projects
|
2023 |
Our building permit records indicate that Martinez Underground Inc has worked on at least
27.0 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
|
15 projects
|
New Constructions |
|
19 projects
|
Plumbing projects |
|
16 projects
|
Sewer laterals |
Analyzing permits over the last 4 years shows that Martinez Underground Inc mostly works on
plumbing project
and sewer lateral
projects.
Pricing
|
10 projects
|
< $5k |
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 Martinez Underground Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
This project is currently approved under 2022-rescon-0003617. due to budget issues the scope of the original project is being reduced. both the pool house and the pool have been removed from the project. the covered porch areas have been reduced in scope and redesigned as well
Valuation:
N/A
Permit #:
2023-SUDP-0003186
Status:
approved
Fee:
$55
Permit Type:
Alteration
Building Type:
N/A
Clara brown commons located at 3701 york street denver 80205 will include the first phase of the overall block development including a multi-residential building consisting of 61 affordable housing units with a mix of 1 2 and 3 br units. the project is located along the 38th ave and york st
Valuation:
N/A
Permit #:
2021-SUDP-0005475
Status:
approved
Fee:
$102,775
Permit Type:
New
Building Type:
N/A
Sewer service install from new tap at main in arapahoe to building. new 3/4 water service/tap/meter pit. meter pit must be placed in row or public utility easement. flowfill street patch concrete r&r ***pre-construction meeting with row inspector required***
Valuation:
N/A
Permit #:
ROW2021-00245
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Abandon tap install new 1 water meter line and tap. **road will need to be reopened after the working day. plates may be laid down as long as the forecast is clear so they aren't hit by snow removal operations.**
Valuation:
N/A
Permit #:
ROW2022-00164
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single story home on existing property
Valuation:
N/A
Permit #:
BLDG25-00405
Status:
applied
Fee:
N/A
Permit Type:
New single family...
Building Type:
N/A
1300 n lipan st - new building - flats on 13th new apartment building - 3 stories with covered parking. 16 total units (201-208 and 301-308). existing structures on site to be demolished
Valuation:
N/A
Permit #:
2020-SUDP-0003664
Status:
issued
Fee:
$7,195
Permit Type:
New
Building Type:
N/A
Interior & entry driveway remodel of existing single-family residence.(2019-sudp-0004524) construction of a new swimming pool and pool house as well as related site development
Valuation:
N/A
Permit #:
2020-SUDP-0001248
Status:
approved
Fee:
$265
Permit Type:
Addition
Building Type:
N/A
New 2-story duplex w crawlspace & detached garage red-t partnership llc 1591 uinta street & 8120 e. 16th avenue new construction 2 story duplex
Valuation:
N/A
Permit #:
2021-SUDP-0002721
Status:
approved
Fee:
$10,375
Permit Type:
New
Building Type:
N/A
New 2-story duplex w crawlspace & detached garage red-t partnership llc 1561 & 1565 uinta street new construction two-story duplex
Valuation:
N/A
Permit #:
2021-SUDP-0002584
Status:
approved
Fee:
$265
Permit Type:
New
Building Type:
N/A
Core & shell-change of use alteration with 2nd floor and garage addition
Valuation:
N/A
Permit #:
2018-SUDP-0004846
Status:
approved
Fee:
$42,440
Permit Type:
Addition & altera...
Building Type:
N/A
1105 s dahlia st - new single family residence w/det garage single family home 1800 square feet with a detached garage
Valuation:
N/A
Permit #:
2021-SUDP-0004414
Status:
approved
Fee:
$5,170
Permit Type:
New
Building Type:
N/A
Constructing a shade canopy for electrical panels
Valuation:
$3,500
Permit #:
CEN-25-00183
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New 1-story religious & public assembly building harmonist - an urban sanctuary 4633 e. colfax avenue
Valuation:
N/A
Permit #:
2018-SUDP-0003325
Status:
approved
Fee:
$13,479
Permit Type:
New
Building Type:
N/A
Relocate 8 water main per approved tec-doc drawings. install 331 of 8 pvc pipe abandon 231 of pipe
Valuation:
N/A
Permit #:
UTL2021-00312
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Relocate 8 water main per approved tec-doc drawings. install 331 of 8 pvc pipe abandon 231 of pipe
Valuation:
N/A
Permit #:
ROW2021-00311
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install new fireline in right of way
Valuation:
N/A
Permit #:
ROW25-00662
Status:
issued
Fee:
$4,490
Permit Type:
N/A
Building Type:
N/A
Domestic water line from water meter pit to foundation wall
Valuation:
$35
Permit #:
2024-PLUMB-0001705
Status:
final
Fee:
$20
Permit Type:
N/A
Building Type:
Single family res...
Domestic water service from water meter pit to foundation wall
Valuation:
$35
Permit #:
2024-PLUMB-0001704
Status:
final
Fee:
$20
Permit Type:
N/A
Building Type:
Single family res...
Domestic water line from water meter pit to foundation wall
Valuation:
$35
Permit #:
2024-PLUMB-0001701
Status:
final
Fee:
$20
Permit Type:
N/A
Building Type:
Single family res...
New domestic water service piping from meter pit to house
Valuation:
$1,000
Permit #:
2022-PLUMB-0012783
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
Martinez Underground Inc License info
Verified License
| Status | Active |
| City | Denver |
| Type | Row Sidewalk |
- 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
| 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.
License Not Verified
| Status | Active |
| City | Denver |
- When BuildZoom last verified this license, it had an expiration date of January, 2021. Check the current license status of Martinez Underground 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.
Inactive License
| License # | AEC9221 |
| 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 Martinez Underground 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 # | AEC000138 |
| 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 Martinez Underground 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 | 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.
102
BuildZoom Score
76
Permits
- Building permit records show that Martinez Underground Inc has worked on 76 permitted projects.
Martinez Underground Inc Employees
FM
Frank Martinez
FJ
Frank Martinez Jr
FM
Frank Matrtinez
Owner