Updated: Jun 03, 2026
Location and Projects
Address
616 GLENWOOD ST, Duluth, MN, 55803
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Caldwell Plumbing & Heating LLC
Caldwell Plumbing & Heating LLC, 616 Glenwood St, Duluth, MN (Owned by: Caldwell, Adam M) holds a Plumbing license and 11 other licenses according to the Minnesota license board.
Their BuildZoom score of 108 ranks in the top 5% of 77,973 Minnesota licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Caldwell Plumbing & Heating LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Caldwell Plumbing & Heating LLC Services
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Caldwell Plumbing & Heating LLC Contact Information
Phone Number: (218) 591-3441
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Address: 616 GLENWOOD ST, Duluth, MN 55803
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Caldwell Plumbing & Heating LLC Duluth
Quality
108
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Caldwell Plumbing & Heating LLC has a BuildZoom score of 108, which places them above 95% of 77,973 contractors in Minnesota.
Activity
|
473 projects
|
2025 |
|
155 projects
|
2024 |
|
137 projects
|
2023 |
Our building permit records indicate that Caldwell Plumbing & Heating LLC has worked on at least
765.0 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
|
7 projects
|
Home Additions |
|
5 projects
|
New Constructions |
|
92 projects
|
HVAC projects |
Analyzing permits over the last 4 years shows that Caldwell Plumbing & Heating LLC mostly works on
hvac project
and home addition
projects.
Pricing
|
701 projects
|
< $5k |
|
41 projects
|
$5k-$20k |
|
11 projects
|
$20k-$50k |
|
4 projects
|
$50k-$100k |
|
1 project
|
$100k-$250k |
|
3 projects
|
$250k-$500k |
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 Caldwell Plumbing & Heating LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Hvac (alteration of existing system) - commercial & 3+ multi-family
2025-02-19
Reconfigure existing ductwork per new layout and added offices. relocate existing mechanical equipment to new mechanical room and associated ductwork and hydronic piping. additional equipment needed for yoga studio and fitness room. exhaust for new bathroom and fitness room. mini split for elevator equipment room
Valuation:
$310,000
Permit #:
CSHVACC-2407-0032
Status:
final
Fee:
$3,430
Permit Type:
N/A
Building Type:
N/A
Hvac (alteration of existing system) - commercial & 3+ multi-family
2025-07-09
- minimally revised furnace ductwork to serve spaces. (furnace will have closet built around it. and the existing door between kitchen spaces will be removed for proper airflow.) - new erv (located in basement) serving ventilation and exhaust for spaces. exhaust is ducted to bathroom and janitor sink areas. fresh air ducted to furnace return. - (1) 5-ton multi-split heat-pump system w... see more
Valuation:
$18,000
Permit #:
CSHVACC-2505-0059
Status:
final
Fee:
$441
Permit Type:
N/A
Building Type:
N/A
Existing plumbing for tub and lav tie into heal outlet at toilet. this will be repiped and new wye installed for waste from tub and lav. this would need to be accessed from below. -relocate plumbing for bathroom lav -plumbing for new tub -existing plumbing for lav and tub not vented currently. new venting for each to be installed and tied into stack in attic -install new shower valve ... see more
Valuation:
$4,200
Permit #:
CSPLUMR-2502-0104
Status:
complete
Fee:
$165
Permit Type:
N/A
Building Type:
N/A
Plumbing (over 25 openings or food service) - commercial & 3+ multi-family
2025-07-01
Reconfigure plumbing for new business. install 1 toilet and lav. install prep sink 3-comp sink and mop sink along with 2 floor drains
Valuation:
$12,000
Permit #:
CSPLUMC-2505-0070
Status:
complete
Fee:
$321
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - commercial & 3+ multi-family
2024-10-02
Replace existing boiler with new high eff navien boilers. existing system consists of two large boilers. the proposed system would consist of four smaller boilers cascaded together
Valuation:
$75,000
Permit #:
CSHVACC-2406-0026
Status:
final
Fee:
$1,243
Permit Type:
N/A
Building Type:
N/A
Replaced existing boiler with new high eff navien boilers. existing system consists of two large boilers (input btus 1, 009mbh ea.) the proposed system would consist of four smaller boilers cascaded together
Valuation:
N/A
Permit #:
BPV-P2407-003
Status:
final
Fee:
$180
Permit Type:
Add/change to exi...
Building Type:
N/A
Hvac (alteration of existing system) - commercial & 3+ multi-family
2025-10-14
Reconfigure ductwork for 3rd floor office per new layout. existing equipment is staying
Valuation:
$40,000
Permit #:
CSHVACC-2502-0022
Status:
final
Fee:
$799
Permit Type:
N/A
Building Type:
N/A
Install hvac as per plan
Valuation:
$485,000
Permit #:
BHVAC2303-040
Status:
issued
Fee:
$4,739
Permit Type:
N/A
Building Type:
N/A
Plumbing (over 25 openings or food service) - commercial & 3+ multi-family
2025-06-02
Install plumbing for 3 comparable sink grease trap hand sink and 3 floor drains
Valuation:
$6,000
Permit #:
CSPLUMC-2504-0050
Status:
complete
Fee:
$201
Permit Type:
N/A
Building Type:
N/A
(467 ski hill rd) bar countertop and associated plumbing fixtures are being added as part of renovation work on the upper level of the chalet building at lutsen mountain
Valuation:
N/A
Permit #:
PB-P2401-0012
Status:
final
Fee:
$201
Permit Type:
N/A
Building Type:
N/A
Plumbing (25 or fewer openings) - commercial & 3+ multi-family
2025-08-11
Install 2 bathrooms 2 break room sinks and mop sink for new office
Valuation:
$15,000
Permit #:
CSPLUMC-2504-0046
Status:
complete
Fee:
$381
Permit Type:
N/A
Building Type:
N/A
Hvac (alteration of existing system) - commercial & 3+ multi-family
2025-09-08
Install mini-splits and air exchanger for remodel
Valuation:
$50,000
Permit #:
CSHVACC-2503-0033
Status:
final
Fee:
$944
Permit Type:
N/A
Building Type:
N/A
Hvac (alteration of existing system) - commercial & 3+ multi-family
2025-01-07
Replace existing remote terminal unit with new remote terminal unit
Valuation:
$12,000
Permit #:
CSHVACC-2501-0002
Status:
issued
Fee:
$321
Permit Type:
N/A
Building Type:
N/A
Plumbing (25 or fewer openings) - commercial & 3+ multi-family
2025-05-22
Adding 4 bathrooms and 1 bar to existing
Valuation:
$45,000
Permit #:
CSPLUMC-2502-0019
Status:
complete
Fee:
$871
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - commercial & 3+ multi-family
2022-05-23
Install hvac as per plan
Valuation:
$350,000
Permit #:
BHVAC2205-090
Status:
expired
Fee:
$3,364
Permit Type:
N/A
Building Type:
N/A
Plumbing (over 25 openings or food service) - commercial & 3+ multi-family
2022-02-09
Install plumbing per plan
Valuation:
$500,000
Permit #:
BPLUM2202-005
Status:
final
Fee:
$4,553
Permit Type:
N/A
Building Type:
N/A
Hvac (furnace or boiler replacement) - commercial & 3+ multi-family
2025-03-13
Replaced remote terminal unit with same for same
Valuation:
$7,500
Permit #:
CSHVACC-2503-0040
Status:
issued
Fee:
$231
Permit Type:
N/A
Building Type:
N/A
Plumbing (25 or fewer openings) - commercial & 3+ multi-family
2025-06-12
Install plumbing per plan for treatment rooms
Valuation:
$22,500
Permit #:
CSPLUMC-2501-0001
Status:
complete
Fee:
$531
Permit Type:
N/A
Building Type:
N/A
Hvac (alteration of existing system) - commercial & 3+ multi-family
2025-06-20
Install new forced air system with air exchange
Valuation:
$22,000
Permit #:
CSHVACC-2501-0001
Status:
final
Fee:
$521
Permit Type:
N/A
Building Type:
N/A
Hvac (alteration of existing system) - commercial & 3+ multi-family
2024-11-07
Reconfigure existing hvac system per plans
Valuation:
$175,000
Permit #:
CSHVACC-2410-0093
Status:
issued
Fee:
$2,200
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Caldwell Plumbing & Heating LLC License info
Verified License
| License # | PM067803 |
| Status | Active |
| State | Minnesota |
| Type | Plumbing |
| Business Type | Not Available |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Caldwell Plumbing & Heating LLC at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 1431490-HVACCONT |
| Status | Active |
| State | Wisconsin |
| Type | Hvac Contractor |
| Business Type | Not Available |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Caldwell Plumbing & Heating LLC at the Wisconsin Department of Safety and Professional Services.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | MB712119 |
| Status | Active |
| State | Minnesota |
| Type | Mechanical Contractor Bond |
| Business Type | Not Available |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Caldwell Plumbing & Heating LLC at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | R5284 |
| Status | Active |
| City | Duluth |
| Type | Plumb & Hvac Con |
| Business Type | Not Available |
- When BuildZoom last verified this license, it had an expiration date of December, 2024. Check the current license status of Caldwell Plumbing & Heating LLC with the The City of Duluth, MN
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | R171 |
| Status | Active |
| City | Duluth |
| Type | Plumb & Hvac Con |
| Business Type | Not Available |
- When BuildZoom last verified this license, it had an expiration date of December, 2024. Check the current license status of Caldwell Plumbing & Heating LLC with the The City of Duluth, MN
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | MB005774 |
| Status | Inactive |
| State | Minnesota |
| Type | Mechanical Contractor Bond |
| Business Type | Not Available |
- According to the Minnesota Department of Labor & Industry, 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 Caldwell Plumbing & Heating LLC at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | PC644537 |
| Status | Inactive |
| State | Minnesota |
| Type | Plumbing |
| Business Type | Not Available |
- According to the Minnesota Department of Labor & Industry, 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 Caldwell Plumbing & Heating LLC at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | BF067803 |
| Status | Inactive |
| State | Minnesota |
| Type | Plumbing |
| Business Type | Not Available |
- According to the Minnesota Department of Labor & Industry, 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 Caldwell Plumbing & Heating LLC at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | PC712119 |
| Status | Inactive |
| State | Minnesota |
| Type | Plumbing |
| Business Type | Not Available |
- According to the Minnesota Department of Labor & Industry, 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 Caldwell Plumbing & Heating LLC at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | PC644537 |
| Status | Inactive |
| State | Minnesota |
| Type | Plumbing Contractor |
| Business Type | Not Available |
- According to the Minnesota Department of Labor & Industry, 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 Caldwell Plumbing & Heating LLC at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | BF067803 |
| Status | Inactive |
| State | Minnesota |
| Type | Backflow Prevention Rebuilder |
| Business Type | Not Available |
- According to the Minnesota Department of Labor & Industry, 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 Caldwell Plumbing & Heating LLC at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | MB005774 |
| Status | Inactive |
| State | Minnesota |
| Type | Mechanical Contractor Bond |
| Business Type | Not Available |
- According to the Minnesota Department of Labor & Industry, 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 Caldwell Plumbing & Heating LLC at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
108
BuildZoom Score
1.2K
Permits
- Building permit records show that Caldwell Plumbing & Heating LLC has worked on 1191 permitted projects.
Caldwell Plumbing & Heating LLC Employees
.
.
CL
Caldwell Plumbing & Heating Llc
Owner
CM
Caldwell, Adam M
Owner
CS
Christopher P. Shubitz