Updated: Feb 03, 2026
Location and Projects
Address
229 VALLEJO ST, Denver, CO, 80223
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W.E. O'NEILL Construction Company O
W.E. O’NEILL Construction Company operates in Denver, Colorado, delivering general contracting and construction management services across the Front Range and greater Denver metro area. The company’s portfolio includes ground-up construction and large-scale renovation projects for commercial clients, with experience in the hospitality, multifamily, healthcare, education, and office sectors. W.E. O’NEILL has managed the construction of hotels, office complexes, educational facilities, and healthcare centers, providing a range of delivery methods including design-build, CMAR (Construction Manager at Risk), and traditional general contracting. The team utilizes advanced construction technology and collaborates with architects, engineers, and developers to support complex project needs from preconstruction through completion. Founded in 1925, W.E. O’NEILL has had an active presence in Denver for over two decades, applying its construction expertise to both new builds and significant interior renovations throughout the region.
W.E. O'NEILL Construction Company O Services
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W.E. O'NEILL Construction Company O Contact Information
Address: 229 VALLEJO ST, DENVER, CO 80223
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W.E. O'NEILL Construction Company O DENVER
Quality
99
85th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
W.E. O'NEILL Construction Company O has a BuildZoom score of 99, which places them above 85% of 55,949 contractors in Colorado.
Activity
|
2 projects
|
2024 |
|
4 projects
|
2023 |
Our building permit records indicate that W.E. O'NEILL Construction Company O 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
|
New Constructions |
Analyzing permits over the last 4 years shows that W.E. O'NEILL Construction Company O mostly works on
new construction
projects.
Pricing
|
1 project
|
$100k-$250k |
|
1 project
|
$1mil+ |
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 W.E. O'NEILL Construction Company O
This is a sample of this contractor's permits. Click here to access their complete permit history.
Interior renovation of existing bar space into restaurant. work includes cosmetic improvements new kitchen equipment new kitchen hood etc
Valuation:
$175,000
Permit #:
COM-0728-2024
Status:
final
Fee:
$43,951
Permit Type:
N/A
Building Type:
N/A
Warehouse building
Valuation:
$6,633,000
Permit #:
CEN-22-00139
Status:
complete
Fee:
$131,576
Permit Type:
N/A
Building Type:
N/A
New - s'park timber - (150) unit multi-family apartments and townhomes. project also includes ammenities spaces including community rooms fitness rooms outdoor swimming pool and business center. additionally (2) proposed retail spaces to be located on the ground floor. associated mep's covered under the scope of this permit. subgrade parking structure under separate permit pmt2017-008... see more
Valuation:
N/A
Permit #:
PMT2017-00982-PLB
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New - s'park timber - (150) unit multi-family apartments and townhomes. project also includes ammenities spaces including community rooms fitness rooms outdoor swimming pool and business center. additionally (2) proposed retail spaces to be located on the ground floor. associated mep's covered under the scope of this permit. subgrade parking structure under separate permit pmt2017-008... see more
Valuation:
N/A
Permit #:
PMT2017-00982-MEC
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Permit for the below grade parking structure for the timberlofts project multi-family apartment building. above grade portion of the project to be submitted under separate permit. 2/8/19 revised electrical drawings. *resubmittal 3/28/19: revised mechanical drawings to relocate back-up emergency generator for dewatering system to garage level b1 4/9/19 addition of vestibules at elevato... see more
Valuation:
N/A
Permit #:
PMT2017-00812
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Renovation of one room for new power and data install door door frame door hardware patching drywall and new paint finishes. changing conference room to a security monitoring office
Valuation:
$39,525
Permit #:
CEN-19-05915
Status:
complete
Fee:
$1,619
Permit Type:
N/A
Building Type:
N/A
New construction of a 4-level commercial/retail building with mezzanine referred to as market with a mix of office space restaurant space some assembly and some storage interior core and shell for future tenant finishes. includes sitework for landscaping irrigation and grading. building is approximately 51, 232 sf of floor area. associated with tec2016-00016 and adr2016-00131 and adr2... see more
Valuation:
N/A
Permit #:
PMT2017-00786-ELE
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New construction of a 4-level commercial/retail building with mezzanine referred to as market with a mix of office space restaurant space some assembly and some storage interior core and shell for future tenant finishes. includes sitework for landscaping irrigation and grading. building is approximately 51, 232 sf of floor area. associated with tec2016-00016 and adr2016-00131 and adr2... see more
Valuation:
N/A
Permit #:
PMT2017-00786
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Full structure demolition of a 2856 sf office building constructed in 1960s. structure is the old transfer building (bldg. #3) located on the sutherland's site). associated with multiple addresses and parcels including 3390 valmont rd 3303 bluff 3400 valmont. see also his2016-00369 and lur2015-00010
Valuation:
N/A
Permit #:
PMT2017-01984-DEM
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Temporary shoring (soldier beams and tiebacks) permit for timberlofts foundation/parking garage
Valuation:
N/A
Permit #:
PMT2017-02992
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Permit for the below grade parking structure for the timberlofts project multi-family apartment building. above grade portion of the project to be submitted under separate permit
Valuation:
N/A
Permit #:
PMT2017-00812-PLB
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Permit for the below grade parking structure for the timberlofts project multi-family apartment building. above grade portion of the project to be submitted under separate permit
Valuation:
N/A
Permit #:
PMT2017-00812-MEC
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
ELE2021-01662
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Jobsite construction trailer
Valuation:
$6,000
Permit #:
CEN-22-00130
Status:
plancheck
Fee:
$81
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
FIR2020-00130
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Full structure demolition of a 2856 sf office building constructed in 1960s. structure is the old transfer building (bldg. #3) located on the sutherlandfoots site). associated with multiple addresses and parcels including 3390 valmont rd 3303 bluff 3400 valmont. see also his2016-00369 and lur2015-00010
Valuation:
N/A
Permit #:
PMT2017-01984
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Office - administ...
Interior non-structural remodel to existing office space (b-occupancy). scope of work includes demolition of some existing office walls and subsequent construction of new walls to establish new office layout. includes associated lighting and mechanical work
Valuation:
N/A
Permit #:
PMT2014-02360
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construction of a new 3 story 28, 419 square foot mixed use building containing twenty (20) 1 and 2 bedroom units and 8, 056 square feet of ground floor commercial space. elevator and stair access to a below grade parking garage will be provided. long term bicycle storage is also provided in the below grade parking garage. the below grade parking garage is filed under bld-nre2020-00200
Valuation:
N/A
Permit #:
UTL2020-01227
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building 1b - construction of a new 4 story 32, 809 square foot mixed use building containing twenty-three (23) 1 2 and 3 bedroom units and 5, 115 square feet of ground floor commercial space. amenity roof decks are provided on levels 2 and 4 totaling 1, 175 square feet. elevator access to a below grade parking garage will be provided. long term bicycle storage is also provided in the... see more
Valuation:
N/A
Permit #:
BLD-MXU2020-00009
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Tenant remodel of 6440 square feet and addition of 20 square feet. addition for new entry vestibule and remodel for new vibration and vacuum chambers for testing of spacecraft. includes associated electrical mechanical and plumbing. see adr2012-00169 for minor mod
Valuation:
N/A
Permit #:
PMT2012-04763
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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W.E. O'NEILL Construction Company O Reviews
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Verified License
BuildZoom confirmed this contractor's license
W.E. O'NEILL Construction Company O License info
Verified License
| License # | CEN-13-01306 |
| Status | Active |
| City | Centennial |
| Type | General Contractor Class A |
- BuildZoom has not verified this license since July, 2015.
Verify this license's status for W.E. O'NEILL Construction Company O at the Centennial Community Development Contractor Licensing.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LIC-0009302-GENCA |
| Status | Inactive |
| City | Boulder |
| Type | General |
| Class | Class A |
- 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 W.E. O'NEILL Construction Company O at the Boulder Licensing Board.
This is a sample of licensing data; click here to access a complete history.
99
BuildZoom Score
68
Permits
- Building permit records show that W.E. O'NEILL Construction Company O has worked on 68 permitted projects.