Updated: Jun 02, 2026
Location and Projects
Address
231 Green Valley Cir, Castle Pines, CO, 80108
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Brian Warren Buller HVAC/Mechanical Contractor
Brian Warren Buller, 231 Green Valley Cir, Castle Pines, CO (Owned by: Brian Buller) holds a Mechanical Systems Contractor license and 19 other licenses according to the Aurora license board.
Their BuildZoom score of 95 ranks in the top 22% of 55,949 Colorado licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Brian Warren Buller, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Brian Warren Buller Contact Information
Phone Number: (303) 521-1370
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Address: 231 Green Valley Cir, Castle Pines, CO 80108
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Brian Warren Buller Castle Pines
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Brian Warren Buller has a BuildZoom score of 95, which places them above 78% of 55,949 contractors in Colorado.
Activity
|
2 projects
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Brian Warren Buller has worked on at least
4.0 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.
Pricing
|
1 project
|
< $5k |
|
1 project
|
$5k-$20k |
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.
Install 120000 btu furnace -- |comments: 2 furnaces twinned together. each 120k btu. 2 stage 80% furnace. replacing like for like
Valuation:
$8,407
Permit #:
1799332
Status:
issued
Fee:
$352
Permit Type:
Mechanical permit
Building Type:
N/A
Rs - residential
Valuation:
$500,000
Permit #:
22-12619
Status:
issued
Fee:
$2,985
Permit Type:
Alteration
Building Type:
Residential
Install 120000 btu furnace -- |comments: furnace 2 of 2
Valuation:
$3,800
Permit #:
1802592
Status:
issued
Fee:
$184
Permit Type:
Mechanical permit
Building Type:
N/A
Install 120000 btu furnace -- |comments: 1 of 2 furnaces
Valuation:
$3,800
Permit #:
1802591
Status:
issued
Fee:
$184
Permit Type:
Mechanical permit
Building Type:
N/A
Rs - residential
Valuation:
$273,701
Permit #:
18-00443
Status:
issued
Fee:
$4,924
Permit Type:
Addition
Building Type:
Residential
Install 50000 btu furnace with air conditioning unit --|state electrical license: 100742 | -- |comments: 2.0 tons air conditioning unit #7-303
Valuation:
$5,000
Permit #:
1338345
Status:
issued
Fee:
$230
Permit Type:
Mechanical permit
Building Type:
N/A
Rs - residential
Valuation:
N/A
Permit #:
22-12619
Status:
plancheck
Fee:
N/A
Permit Type:
Alteration
Building Type:
Residential
No Description Available
Valuation:
N/A
Permit #:
22113624 00000MP
Status:
issued
Fee:
N/A
Permit Type:
Repair remodel
Building Type:
Residential
Furnace (forced air)
Valuation:
$2,718
Permit #:
20-09942
Status:
complete
Fee:
$83
Permit Type:
Furnace (forced air)
Building Type:
N/A
Furnace/ac combo
Valuation:
$8,991
Permit #:
20-07063
Status:
issued
Fee:
$167
Permit Type:
Furnace/AC combo
Building Type:
N/A
Replace furnace and air conditioner
Valuation:
$5,500
Permit #:
RMIS19-00352
Status:
final
Fee:
$173
Permit Type:
2 or more appliances
Building Type:
N/A
Rs - residential
Valuation:
N/A
Permit #:
23-17480
Status:
plancheck
Fee:
N/A
Permit Type:
Alteration
Building Type:
Residential
Furnace/ac combo
Valuation:
N/A
Permit #:
23-11734
Status:
applied
Fee:
N/A
Permit Type:
Furnace/AC combo
Building Type:
N/A
Install water heater 50 gal -- |comments: #7-303
Valuation:
$1,375
Permit #:
1338346
Status:
issued
Fee:
$77
Permit Type:
plumbing permit
Building Type:
N/A
Marion basement finish
Valuation:
N/A
Permit #:
RES21-0993
Status:
final
Fee:
$362
Permit Type:
Basement finish
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
20123374 00000MP
Status:
issued
Fee:
N/A
Permit Type:
Repair remodel
Building Type:
N/A
Water heater
Valuation:
$1,025
Permit #:
19-03088
Status:
issued
Fee:
$42
Permit Type:
Water heater
Building Type:
N/A
Install furance high eff
Valuation:
$4,500
Permit #:
WEB18-0076
Status:
final
Fee:
$199
Permit Type:
Single family det
Building Type:
N/A
Furnace/ac combo
Valuation:
$5,592
Permit #:
18-03493
Status:
complete
Fee:
$125
Permit Type:
Furnace/AC combo
Building Type:
N/A
Basement finish
Valuation:
$18,418
Permit #:
20-1423
Status:
issued
Fee:
$967
Permit Type:
Basement finish
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Brian Warren Buller License info
Verified License
| Status | Active |
| City | Aurora |
| Type | Mechanical Systems 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
| License # | MA120313 |
| Status | Active |
| County | Douglas County |
| Type | Mechanical A |
- BuildZoom verified this license was active as of July 2025.
Verify this license's status for Brian Warren Buller at the Douglas County Building Division.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | MA130488 |
| Status | Active |
| County | Douglas County |
| Type | Mechanical A |
- BuildZoom verified this license was active as of August 2025.
Verify this license's status for Brian Warren Buller at the Douglas County Building Division.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | AEC1674 |
| Status | Active |
| Town | Parker |
| Type | Contractor |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Brian Warren Buller at the The Town of Parker, Colorado.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | AEC5284 |
| Status | Active |
| City | Arvada |
| Type | Contractor |
| Date Issued | 01-21-2026 |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Brian Warren Buller at the The City of Arvada, Colorado.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 27700 |
| Status | Active |
| City | Thornton |
| Type | Mechanical |
- When BuildZoom last verified this license, it had an expiration date of February, 2017. Check the current license status of Brian Warren Buller with the Thornton City Development Contractor License
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | ME-29632 |
| Status | Active |
| State | Colorado |
| Type | Master Electrician |
- When BuildZoom last verified this license, it had an expiration date of September, 2011. Check the current license status of Brian Warren Buller with the Colorado Division of Professions and Occupations
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 25723 |
| Status | Active |
| City | Thornton |
| Type | Mechanical |
- When BuildZoom last verified this license, it had an expiration date of February, 2017. Check the current license status of Brian Warren Buller with the Thornton City Development Contractor License
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 1674 |
| Status | Active |
| Town | Parker |
| Type | Contractor, Mechanical |
- BuildZoom has not verified this license since March, 2017.
Verify this license's status for Brian Warren Buller 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 # | 7M-1110 |
| Status | Active |
| City | Arvada |
| Type | Bid Contractor, Mechanical |
- When BuildZoom last verified this license, it had an expiration date of July, 2016. Check the current license status of Brian Warren Buller with the The City of Arvada, Colorado
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 23771 |
| Status | Active |
| City | Thornton |
| Type | Mechanical |
- When BuildZoom last verified this license, it had an expiration date of July, 2016. Check the current license status of Brian Warren Buller with 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 | Mechanical Systems 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
| Status | Inactive |
| County | Jefferson County |
| Type | Class C Mechanical (1 2 Family Dwellings) |
| Class | 1-2 Family Dwellings |
- According to the Jefferson County Licensed Contractors, 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 # | 29632 |
| Status | Inactive |
| State | Colorado |
| Type | Electrician |
- 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. If this is your business, please update your license status.
Check this license's status for Brian Warren Buller 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 # | 7453 |
| Status | Inactive |
| State | Colorado |
| Type | Electrical Contractor |
- 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. If this is your business, please update your license status.
Check this license's status for Brian Warren Buller 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 # | LIC-0011410-MECHC |
| Status | Inactive |
| City | Boulder |
| Type | Mechanical |
| Class | Class C One and Two Dwelling Units |
- 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 Brian Warren Buller at the Boulder Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Denver |
- 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 # | 091031062 |
| 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 Brian Warren Buller at the City of Westminster, Colorado.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LCC2015062298 |
| Status | Inactive |
| City | Thornton |
| Type | Class D Mechanical |
- 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 Brian Warren Buller at the Thornton City Development Contractor License.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LIC-0011410 |
| Status | Inactive |
| City | Boulder |
| Type | Mechanical |
| Class | Class C 1 & 2 Dwelling Units |
- 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 Brian Warren Buller at the Boulder Licensing Board.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
68
Permits
- Building permit records show that Brian Warren Buller has worked on 68 permitted projects.
Brian Warren Buller Employees
BB
Brian Buller
Owner
BB
Brian Warren Buller
BI
Buller Electric Inc
BI
Buller Mechanical Inc
Owner
SB
Stan Buller
Contact
SB
Stanley Buller
Owner