Updated: Jul 10, 2026
Location and Projects
Address
PO Box 370, Windsor, CO, 80550
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Mason Construction
Serving the Windsor, Colorado area for 38 years, Mason Construction brings extensive experience to a variety of residential and commercial construction projects. The company provides general contracting services tailored to clients in Northern Colorado, drawing on decades of expertise in managing new builds, remodels, and additions. With a portfolio reflecting a wide range of project types, Mason Construction has supported property owners through all phases of construction—from planning and permitting to project completion. The firm is equipped to handle different property sizes and requirements, working with clients on custom home construction, renovations, and structural improvements. With nearly four decades in the industry, Mason Construction delivers local knowledge and practical solutions for building and renovating in the Windsor region.
Mason Construction Services
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Mason Construction Contact Information
Phone Number: (702) 231-3780
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Address: PO Box 370, Windsor, CO 80550
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Mason Construction Windsor
Quality
105
92nd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Mason Construction has a BuildZoom score of 105, which places them above 92% of 55,949 contractors in Colorado.
Activity
|
21 projects
|
2025 |
|
4 projects
|
2024 |
|
11 projects
|
2023 |
Our building permit records indicate that Mason Construction has worked on at least
36.0 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
|
22 projects
|
Home Additions |
|
7 projects
|
New Constructions |
Analyzing permits over the last 4 years shows that Mason Construction mostly works on
home addition
and new construction
projects.
Pricing
|
1 project
|
< $5k |
|
1 project
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
|
17 projects
|
$50k-$100k |
|
1 project
|
$250k-$500k |
The typical size of their permits is approximately $72,159. 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.
2022 2240 sf two story commodore irc modular home on 1280 sf unfinished basement - no garage - includes air conditioning and basement plumbing - for principal dwelling -
Valuation:
$200,083
Permit #:
RSN22-0055
Status:
issued
Fee:
$5,813
Permit Type:
N/A
Building Type:
N/A
2021 30x76 highland irc modular home on 2280 sf unfinished basement - no grage - utiltites air conditioning and basement plumbing included -
Valuation:
$221,821
Permit #:
RSN22-0045
Status:
issued
Fee:
$5,688
Permit Type:
N/A
Building Type:
N/A
2021 30x60 highland irc modular home on 1800 sf unfinished basement - no garage - includes utilities basement plumbing and air conditioning - for principal dwelling
Valuation:
$175,122
Permit #:
RSN21-0210
Status:
final
Fee:
$4,993
Permit Type:
N/A
Building Type:
N/A
Building residential - modular dw/sw with addition
2025-02-25
Manufactured home - single family w garage left (24-stpl0004)
Valuation:
$84,362
Permit #:
25-RES0105
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
2021 30x76 highland irc modular home on 2280 sf crawlspace - no garage - includes utilities and air conditioning - for principal dwelling
Valuation:
$200,640
Permit #:
RSN21-0208
Status:
final
Fee:
$5,205
Permit Type:
N/A
Building Type:
N/A
Single story modular 2012 irc 24 x 63. foundation plan review # 252 structure plan review # 253 serial number bk510303karb permit exp 07/09/2019 plan revision #687 adding deck
Valuation:
N/A
Permit #:
18SBG-00084
Status:
canceled
Fee:
$1,983
Permit Type:
N/A
Building Type:
N/A
2021 30x56 highland irc modular home on 1680 sf unfinished basement - no garage - utiltites air conditioning and basement plumbing included -
Valuation:
$163,447
Permit #:
RSN22-0044
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
2021 30x60 highland irc modular home on 1800 sf crawlspace - no garage - includes utilities and air conditioning - for principal dwelling
Valuation:
$158,400
Permit #:
RSN21-0209
Status:
final
Fee:
$4,908
Permit Type:
N/A
Building Type:
N/A
Building residential - modular dw/sw with addition
2025-07-31
Manufactured home - single family home (horizon hills) - model 314b
Valuation:
$81,784
Permit #:
24-RES0231
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building residential - modular dw/sw with addition
2025-10-07
Manufactured home - single family home (horizon hills) - model 314b
Valuation:
$81,784
Permit #:
24-RES0230
Status:
applied
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
Building residential - modular dw/sw with addition
2025-09-30
Manufactured home - single family home (horizon hills) - model 314b
Valuation:
$81,784
Permit #:
24-RES0229
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single story modular sn: mt33286 insignia: 2022-14850 (1 bedroom) with unfinished basement built to the 2012 irc code. foundation plan review # 712f structure plan review # 713f need line permit for this strucutre to the septic permit exp 11/24/2022 mason construction approved the owner to pick up the plans. 11/24/2021 permit renewed now expires 11/24/2023
Valuation:
N/A
Permit #:
21SBG-00210
Status:
filed
Fee:
$1,406
Permit Type:
N/A
Building Type:
N/A
Building residential - modular dw/sw with addition
2024-10-03
Manufactured home - single family home (horizon hills) - model 724
Valuation:
$70,282
Permit #:
24-RES0232
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building residential - modular dw/sw with addition
2025-09-29
Manufactured home - single family home (horizon hills) - model 726
Valuation:
$70,287
Permit #:
24-RES0224
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building residential - modular dw/sw with addition
2025-08-19
Manufactured home - single family home (horizon hills) - model 726
Valuation:
$70,287
Permit #:
24-RES0222
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building residential - modular dw/sw with addition
2024-10-03
Manufactured home - single family home (horizon hills) - model 724
Valuation:
$70,282
Permit #:
24-RES0233
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building residential - modular dw/sw with addition
2025-09-30
Manufactured home - single family home (horizon hills) - model 713
Valuation:
$63,438
Permit #:
24-RES0220
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building residential - modular dw/sw with addition
2025-08-25
Residential - new manufactured home (horizon hills) - model 713
Valuation:
$63,438
Permit #:
24-RES0219
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building residential - modular dw/sw with addition
2025-10-07
Manufactured home - single family home (horizon hills) - model 713
Valuation:
$63,438
Permit #:
24-RES0218
Status:
applied
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
Manufactured home - single family w garage right (24-stpl0004)
Valuation:
N/A
Permit #:
25-RES0110
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Projects
Mason Construction Reviews
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Recent Buildzoom Projects
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Verified License
BuildZoom confirmed this contractor's license
Mason Construction License info
License Not Verified
| License # | CON-23-0001 |
| Status | Active |
| County | Boulder County |
| Type | Miscellaneous |
- When BuildZoom last verified this license, it had an expiration date of January, 2026. Check the current license status of Mason Construction with the Boulder County Land Use Department
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | C017-0060 |
| Status | Active |
| County | Clear Creek County |
| Type | Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Mason Construction with the Clear Creek County, CO
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | LCC2015001778 |
| Status | Active |
| City | Thornton |
| Type | Class D Manufactured Home Expires 2026 08 21 |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Mason Construction at the Thornton City Development Contractor License.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 0001507 |
| Status | Active |
| City | Boulder |
| Type | General Contractor Class D-6 Mobile Home |
- When BuildZoom last verified this license, it had an expiration date of November, 2014. Check the current license status of Mason Construction with the Boulder Licensing Board
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 24422 |
| Status | Active |
| City | Thornton |
| Type | Manufactured Home Setup |
- When BuildZoom last verified this license, it had an expiration date of November, 2014. Check the current license status of Mason Construction with the Thornton City Development Contractor License
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LIC-0001507-GENDMBI |
| Status | Inactive |
| City | Boulder |
| Type | General |
| Class | Class D-6 Mobile Home Installer |
- 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 Mason Construction at the Boulder Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CON-18-0100 |
| Status | Inactive |
| County | Boulder County |
| Type | One And Two Family Residential |
- 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 Mason Construction at the Boulder County Land Use Department.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0012282 |
| Status | Inactive |
| Pueblo | |
| Type | Limited |
- According to the Pueblo regional Building 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 Mason Construction at the Pueblo regional Building Department.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 051031092 |
| 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. If this is your business, please update your license status.
Check this license's status for Mason Construction at the City of Westminster, Colorado.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LIC-0001507 |
| Status | Inactive |
| City | Boulder |
| Type | General Contractor |
| Class | Class D-6 Mobile Home |
- 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 Mason Construction at the Boulder Licensing Board.
This is a sample of licensing data; click here to access a complete history.
105
BuildZoom Score
455
Permits
- Building permit records show that Mason Construction has worked on 455 permitted projects.
Mason Construction Employees
JM
John Mason
Owner
MC
Mason Cyndi