Updated: Jul 05, 2026
Location
Address
Oconomowoc, WI, 53066
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Markham Heating and Cooling
Markham Heating and Cooling at WI 53066, held a HVAC/Mechanical Contractor license (#828216) with the Milwaukee contractors license board. We last verified the license was inactive on 06-21-2026.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 94,017 Wisconsin contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our bidding system to be easily matched to qualified, licensed professionals in your area.
Markham Heating and Cooling Contact Information
Phone Number: (262) 567-8527
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Markham Heating and Cooling Reviews
5 out of 5 stars, based on
1
review
-
By Michael A.October 22, 2020Provide HVAC to addition$1,200
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Markham Heating and Cooling License info
Inactive License
| License # | 828216 |
| Status | Inactive |
| City | Milwaukee |
| Type | Hvac Contractor |
- According to the City of Milwaukee License Search, 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 Markham Heating and Cooling at the City of Milwaukee License Search.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 828216-HVACCONT |
| Status | Inactive |
| State | Wisconsin |
| Type | Hvac Contractor |
- According to the Wisconsin Department of Safety and Professional Services, 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 Markham Heating and Cooling at the Wisconsin Department of Safety and Professional Services.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
- How the BuildZoom Score works
- *No active license on file. If you are Markham Heating and Cooling, click “This is My Business” to update your information.
Markham Heating and Cooling Employees
DM
Darin Markham
Owner
Darin was very responsive and did excellent work on a remodel project our company performed on a $500,000 home. His pricing was solid and never held us up in the construction schedule.
Highly recommend his company.
Mike
Bradley Building Corp