Updated: Jun 02, 2026
Location and Projects
Address
421 21st Ave, Longmont, CO, 80501
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Sigg Brothers Homes Photos
Sigg Brothers Homes
Seeking the freedom of self-employment and a career where hard work and craftsmanship were required, Harold Sigg founded Sigg Brothers Homes in 1977. He enlisted the help of his brother and spent the first few years honing his skills as a carpenter. The two brothers framed houses throughout the Longmont area.
General contracting was soon added to the company’s service list. Through the years of hard work, Harold gained the knowledge and experience needed to develop a top-notch custom home building company.
Doug Sigg joined the team in 1993 after receiving his degree from the Colorado School of Mines. Clint Sigg rejoined the family business in 1999 after receiving a degree from the US Air Force Academy and a career as an Air Force Pilot.
Members of the Sigg Brothers team have constructed over 250 homes over the thirty plus years in the Northern Colorado area. However sheer volume has never been a company goal.
From BuildZoom: Sigg Brothers Homes, 421 21st Ave, Longmont, CO (Employees: Doug Sigg, Ryan Sigg, and Vicki Sigg) holds a Class A license and 11 other licenses according to the Larimer County, CO license board.
Their BuildZoom score of 120 ranks in the top 1% of 55,949 Colorado licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Sigg Brothers Homes, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Sigg Brothers Homes Services
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Sigg Brothers Homes Contact Information
Phone Number: (303) 579-2415
Address: 421 21st Ave, Longmont, CO 80501
Sigg Brothers Homes Longmont
Quality
120
99th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Sigg Brothers Homes has a BuildZoom score of 120, which places them above 99% of 55,949 contractors in Colorado.
Activity
|
9 projects
|
2025 |
|
12 projects
|
2024 |
|
14 projects
|
2023 |
Our building permit records indicate that Sigg Brothers Homes has worked on at least
35.0 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
|
10 projects
|
New Constructions |
Analyzing permits over the last 4 years shows that Sigg Brothers Homes mostly works on
new construction
projects.
Pricing
|
2 projects
|
< $5k |
|
15 projects
|
$5k-$20k |
|
3 projects
|
$50k-$100k |
|
5 projects
|
$250k-$500k |
|
2 projects
|
$1mil+ |
The typical size of their permits is approximately $10,000. 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.
The existing building is currently unoccupied. following the tenant improvement canine athletics training center llc will occupy the space. the only exterior modification is the addition of a new exterior swing door
Valuation:
$20,000
Permit #:
B202500477
Status:
complete
Fee:
$1,269
Permit Type:
N/A
Building Type:
N/A
*standard design: design is based on soils report submitted by soilogic project 17-1309. engineer has designed a dosed to gravity system. *septic tank: for a 6 bedroom home install a minimum 2000 2-compartment tank with watertight risers and lids to grade. *pump tank: 500 gallon pumping tank installed per engineer design. transport line from pumping tank to soil treatment area must dr... see more
Valuation:
N/A
Permit #:
21-HSEP0253
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel after fire
Valuation:
$390,000
Permit #:
BRX2503-0178
Status:
issued
Fee:
$10,632
Permit Type:
Fire or flood res...
Building Type:
N/A
*engineer design: install system per engineer's design; soilogic project no. 21-1108. engineer has designed a standard gravity trench system. *septic tank: for a 5 bedroom home install a minimum 1500 gallon 2-compartment tank with watertight risers and lids to grade. *soil treatment area (sta): maximum depth of sta to bottom of chambers is 24 inches below grade. install 176 - 4’ stand... see more
Valuation:
N/A
Permit #:
22-HSEP0054
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential - single family home
Valuation:
$415,706
Permit #:
23-RES0076
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New single family dwelling w attached garage (spr-18-0110)
Valuation:
$1,050,000
Permit #:
BP-21-0168
Status:
complete
Fee:
$22,073
Permit Type:
N/A
Building Type:
N/A
Single family dwelling with attached garage (marshall fire bda-22-0151-marshall)
Valuation:
$1,050,000
Permit #:
BP-23-2355
Status:
complete
Fee:
$18,343
Permit Type:
N/A
Building Type:
N/A
Single family dwelling - disaster recover unit (dru) (adu) (marshall fire bda-22-0151-marshall)
Valuation:
$334,329
Permit #:
BP-22-2591
Status:
issued
Fee:
$6,796
Permit Type:
N/A
Building Type:
N/A
Residential - single family home
Valuation:
$466,017
Permit #:
21-RES0717
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential - single family home
Valuation:
$466,017
Permit #:
21-RES0717
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential - single family home
Valuation:
$475,830
Permit #:
22-RES0135
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Georgia boys - 6 privacy fence for patio seating
Valuation:
$10,000
Permit #:
B202501563
Status:
complete
Fee:
$444
Permit Type:
N/A
Building Type:
N/A
Basement finish - 1502 sf & kitchen remodel - basement finish consists of den with wet bar 2 bedrooms 1 bathroom storage closet large gym room - 117 sf unfin laundry/mech. room
Valuation:
$83,000
Permit #:
B202101655
Status:
complete
Fee:
$3,892
Permit Type:
N/A
Building Type:
N/A
7059 e lowry blvd - clarks mkt- - fire alarm and signaling revised refrigeration leak detection system submittal for approved clarks market project on 7059 lowry
Valuation:
$10,000
Permit #:
2023-FIRE-0004959
Status:
final
Fee:
$149
Permit Type:
N/A
Building Type:
N/A
Ag barn - for hay storage and equipment (spr-18-0110)
Valuation:
$105,000
Permit #:
BP-21-0105
Status:
issued
Fee:
$3,024
Permit Type:
N/A
Building Type:
N/A
A new 2, 494 sq. ft. 2-story single-family home. main level: guest bedroom with 3/4 bathroom kitchen living dining and half bathroom. upper level includes master bedroom full bathroom 2 additional bedrooms 3/4 bathroom and exterior deck. detached garage under pmt2017-05072. see adr2017-00207 for setback and bulk plane variances. floodplain development permit under pmt2017-05074. struc... see more
Valuation:
N/A
Permit #:
PMT2017-05070
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Basement restoration due to flood
Valuation:
$6,000
Permit #:
B202502605
Status:
comments
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
St vrain & lefthand water district interior remodel - demolish and reconfigure interior office walls install sink
Valuation:
$52,000
Permit #:
B202106078
Status:
expired
Fee:
$2,422
Permit Type:
N/A
Building Type:
N/A
Ag barn - for horses (spr-18-0110)
Valuation:
$120,000
Permit #:
BP-21-0106
Status:
issued
Fee:
$3,428
Permit Type:
N/A
Building Type:
N/A
Re-roof house and garage
Valuation:
$9,600
Permit #:
B202501562
Status:
complete
Fee:
$435
Permit Type:
N/A
Building Type:
N/A
Sigg Brothers Homes Reviews
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Verified License
BuildZoom confirmed this contractor's license
Sigg Brothers Homes License info
Verified License
| License # | CL2344 |
| Status | Active |
| County | Larimer County, Co |
| Type | Class A |
| Class | Class A |
| Date Issued | 10-27-2025 |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Sigg Brothers Homes at the Larimer County.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | CL1269 |
| Status | Active |
| County | Larimer County, Co |
| Type | Class A |
| Class | Class A |
| Date Issued | 02-09-2026 |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Sigg Brothers Homes at the Larimer County.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | CON-10-0183 |
| Status | Active |
| County | Boulder County |
| Type | Residential Work; Commercial Remodeling Or Tenant Finish |
- When BuildZoom last verified this license, it had an expiration date of January, 2026. Check the current license status of Sigg Brothers Homes 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 # | GCB0322775 |
| Status | Active |
| City | Lafayette |
| Type | General Class B |
- When BuildZoom last verified this license, it had an expiration date of May, 2021. Check the current license status of Sigg Brothers Homes with the City of Lafayette
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 278347 |
| Status | Inactive |
| State | Colorado |
- According to the Colorado Division of Professions and Occupations, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Sigg Brothers Homes at the Colorado Division of Professions and Occupations.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 2101397 |
| 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.
Check this license's status for Sigg Brothers Homes at the City of Westminster, Colorado.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CON-20-0080 |
| Status | Inactive |
| County | Boulder County |
| Type | Residential Work; Commercial Remodeling Or Tenant Finish |
- According to the Boulder County Land Use Department, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Sigg Brothers Homes 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 |
| County | Jefferson County |
| Type | Class A Contractor (Unrestricted) |
| Class | Unrestricted |
- According to the Jefferson County Licensed Contractors, the status of this license was at one point cancelled. However, this information may have changed.
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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LIC-0008545-GENCB |
| Status | Inactive |
| City | Boulder |
| Type | General |
| Class | Class B |
- According to the Boulder Licensing Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Sigg Brothers Homes at the Boulder Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | GCB4661622 |
| Status | Inactive |
| City | Lafayette |
| Type | General Class B |
- According to the City of Lafayette, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Sigg Brothers Homes at the City of Lafayette.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LIC-0008545 |
| Status | Inactive |
| City | Boulder |
| Type | General Contractor |
| Class | Class B |
- According to the Boulder Licensing Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Sigg Brothers Homes at the Boulder Licensing Board.
This is a sample of licensing data; click here to access a complete history.
120
BuildZoom Score
217
Permits
- Building permit records show that Sigg Brothers Homes has worked on 217 permitted projects.
Sigg Brothers Homes Employees
DS
Doug Sigg
Owner, Ceo
RS
Ryan Sigg
VS
Vicki Sigg
Owner, Designer