Updated: Jun 14, 2026
Location and Projects
Address
1440 INDUSTRIAL DR NW, Rochester, MN, 55901
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Tonna Mechanical Inc
Tonna Mechanical Inc, 1440 Industrial Dr NW, Rochester, MN (Owned by: Steve Murphy) holds a Contractor license and 10 other licenses according to the Iowa license board.
Their BuildZoom score of 117 ranks in the top 1% of 77,973 Minnesota licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Tonna Mechanical Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Tonna Mechanical Inc Contact Information
Phone Number: (507) 254-4952
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Address: 1440 INDUSTRIAL DR NW, Rochester, MN 55901
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Tonna Mechanical Inc Rochester
Quality
117
99th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Tonna Mechanical Inc has a BuildZoom score of 117, which places them above 99% of 77,973 contractors in Minnesota.
Activity
|
6 projects
|
2026 |
|
1116 projects
|
2025 |
|
1020 projects
|
2024 |
|
1050 projects
|
2023 |
Our building permit records indicate that Tonna Mechanical Inc has worked on at least
3192.0 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
|
187 projects
|
New Constructions |
|
19 projects
|
Home Additions |
|
15 projects
|
Commercial Renovations |
|
2070 projects
|
HVAC projects |
|
865 projects
|
Mechanical projects |
Analyzing permits over the last 4 years shows that Tonna Mechanical Inc mostly works on
hvac project
and mechanical project
projects.
Pricing
|
1658 projects
|
< $5k |
|
1211 projects
|
$5k-$20k |
|
44 projects
|
$20k-$50k |
|
11 projects
|
$50k-$100k |
|
3 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
The typical size of their permits is approximately $4,900. 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.
1 bathroom remodel move and plumbing in new bathtub (supplied by other) shower (tiled by other) with one valve diverter and two heads lav and toilet to new locations. 1 provide and install all fixtures for ada shower install free standing tub (provided by others) dual rpz's for water backflow protection provide and install ada toilet and ada lav. excludes removal and replacement of co... see more
Valuation:
$8,500
Permit #:
R25-2060RP
Status:
complete
Fee:
$119
Permit Type:
N/A
Building Type:
N/A
Re water pipe crawlspace - • re water pipe the crawlspace with same size piping on both sides of building • uponor aqua pex • insulate hot water back to mechanical room • remove old piping from site
Valuation:
$4,200
Permit #:
R25-0162MFP
Status:
issued
Fee:
$77
Permit Type:
N/A
Building Type:
N/A
Mechanical hvac work for rochester womans shelter
Valuation:
$377,000
Permit #:
R25-0024CM
Status:
issued
Fee:
$3,984
Permit Type:
N/A
Building Type:
N/A
Demolition of existing grilles and diffusers in existing areas. any flex to be suspended as necessary to allow for construction work. provide and install new grilles and diffusers; relocating as necessary for new layout. new linear slot diffusers provided to cover the showroom glass. includes new lined sound boxes for returns if plenum ceiling. provide 1-16’ captive aire hvls 6 blade ... see more
Valuation:
$38,000
Permit #:
R24-1778CM
Status:
complete
Fee:
$424
Permit Type:
N/A
Building Type:
N/A
All 18 ga duct and caps will be provided with the booth installation to be completed by tonna mechanical roof curb or cone flashings will be provided spotted and installed by tonna mechanical this includes 2 duct @ 34”dia and 1 duct @10”dia – exhausts to be 6’ above roof all duct to be fire-wrapped and banded in the truss space to extend 6” above roof line. duct will be supported/susp... see more
Valuation:
$19,000
Permit #:
R24-1163CM
Status:
complete
Fee:
$225
Permit Type:
N/A
Building Type:
N/A
Relocate mechanical room - moving the mechanical room from one room to another. move water meter to heated crawl space. adding some piping for future remodel
Valuation:
$3,500
Permit #:
R25-0013RP
Status:
complete
Fee:
$67
Permit Type:
N/A
Building Type:
N/A
Bathroom remodel move and plumbing in new bathtub (supplied by other) shower (tiled by other) with one valve diverter and two heads lav and toilet to new locations. 1 provide and install all fixtures for ada shower install free standing tub (provided by others) dual rpz's for water backflow protection provide and install ada toilet and ada lav
Valuation:
$12,000
Permit #:
R24-1827RP
Status:
complete
Fee:
$151
Permit Type:
N/A
Building Type:
N/A
Plumbing: -demo existing kitchen and reset fixtures at the same location -install dwv and water to vegetable sink -install dwv and water to second kitchen sink -connect to exposed underground piping and vet separately through roof -install water to refrigerator -water and drain accommodations for steam oven (installed by others) (water in pantry cupboard drain indirect under veggie si... see more
Valuation:
$2,600
Permit #:
R24-6726RP
Status:
complete
Fee:
$56
Permit Type:
N/A
Building Type:
N/A
Replacing water heater. installing power vent they have four water heaters for the residents we are replacing the second on in the row
Valuation:
$19,000
Permit #:
R25-0132CP
Status:
issued
Fee:
$225
Permit Type:
N/A
Building Type:
N/A
Installation of 2 ptac units (95 cfm each) x 2 units = 190cfm. installation of 1 side wall exhaust fan (190cfm). general contractor is oakman construction. *size of room is 655sq. ft & classified as a weight room. ventilation requires 180 cfm of fresh air ventilation based on sq. footage & occupancy
Valuation:
$4,200
Permit #:
R23-0183MFM
Status:
complete
Fee:
$77
Permit Type:
N/A
Building Type:
N/A
Tenant finish for the space. has existing remote terminal unit with economizer. we will addition 1 supply and 2 returns and relocate a return; in order to satisfy the rooms and separations. ventilation was approved via the owner and the city i will forward those emails to inspector kirk luthe
Valuation:
$2,800
Permit #:
R23-0315CM
Status:
complete
Fee:
$56
Permit Type:
N/A
Building Type:
N/A
Repair plumbing leak underground in bathroom area demolish old tub/shower re-pipe pvc for tub toilet washer and lav drains tie to existing venting (fixture will remain in same locations) install new tub/shower install existing fixtures
Valuation:
$8,000
Permit #:
R23-0087MFP
Status:
complete
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
Echelon wealth partners ste 100 necessary demolish of breakroom area •rough in new breakroom sink •dwv connections made above bathrooms and in basement area •water connections made in basement area •set owner supplied fixtures
Valuation:
$2,800
Permit #:
R24-1952CP
Status:
complete
Fee:
$56
Permit Type:
N/A
Building Type:
N/A
Running new gas line to the remote terminal unit that was installed in the vacant space (unit #201). mn energy is putting in a new gas meter & tonna mechanical will be running gas line from meter to the remote terminal unit
Valuation:
$4,765
Permit #:
R23-0255CM
Status:
complete
Fee:
$77
Permit Type:
N/A
Building Type:
N/A
Mechanical work for new child care facility o2b kids
Valuation:
$40,000
Permit #:
R23-1420CM
Status:
complete
Fee:
$445
Permit Type:
N/A
Building Type:
N/A
Install dwv and water piping for new sink in upper east end of building - tie into waste and vent in ceilings near lower bathrooms - tie in vent in ceiling above upper bathrooms - set owner supplied fixtures
Valuation:
$2,100
Permit #:
R24-1595CP
Status:
canceled
Fee:
$56
Permit Type:
N/A
Building Type:
N/A
Run new gas line over head from chip shots main over to kitchen down kitchen wall exposed and terminate for connection to fryer. includes tethered commercial quick connect gas wip for code. chip shots gas line
Valuation:
$2,500
Permit #:
R24-0168CM
Status:
complete
Fee:
$56
Permit Type:
N/A
Building Type:
N/A
Demolish existing plumbing and save laundry tub eye wash shower mixing valve and water cooler for re insulation. (stored by other) 1 plumbing in women’s rest room with floor drain toilet and wall hung lav sink to full ada standards. 3 mens room plumbed in with floor drain wall hung urinal and toilet to ada standards in each. 1 tough sink with two stations wall hung stainless with bac... see more
Valuation:
$16,000
Permit #:
O23-0221PM
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Demolition of the two (2) existing toilet room exhaust fans. o connect two (2) new exhaust grilles to the erv system. • relocate one diffuser in concrete slab includes cutting; patching floor by others • installation of a new energy recovery ventilator (erv) to temper the outside fresh air to assure that the mixed air temperature at the existing furnace is appropriate for the furnace ... see more
Valuation:
$12,000
Permit #:
R23-0269MFM
Status:
complete
Fee:
$151
Permit Type:
N/A
Building Type:
N/A
This scope of work includes: • demolition of the existing fan ef-1 • demolition of ductwork systems and air devices • disposal of demolition materials • installation of new ductwork systems o sound liner and sound enclosure for fan • furnish and install two (2) new exhaust fans curb extension motorized damper and air devices • start-up of the new exhaust fan systems. • one (1) new sid... see more
Valuation:
$13,500
Permit #:
R23-1210CM
Status:
complete
Fee:
$172
Permit Type:
N/A
Building Type:
N/A
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Tonna Mechanical Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Tonna Mechanical Inc License info
Verified License
| License # | C130037 |
| Status | Active |
| State | Iowa |
| Type | Contractor |
| Business Type | Not Available |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Tonna Mechanical Inc at the Iowa Workforce Development Agency.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | MB004118 |
| Status | Active |
| State | Minnesota |
| Type | Mechanical Contractor Bond |
| Business Type | Not Available |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Tonna Mechanical Inc at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | PC643850 |
| Status | Active |
| State | Minnesota |
| Type | Plumbing |
| Business Type | Not Available |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Tonna Mechanical Inc at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 987267-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 Tonna Mechanical Inc at the Wisconsin Department of Safety and Professional Services.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 50616-CL |
| Status | Active |
| State | Iowa |
| Type | Plumbing And Mechanical |
| Business Type | Not Available |
- When BuildZoom last verified this license, it had an expiration date of June, 2023. Check the current license status of Tonna Mechanical Inc with the Iowa Department of Public Health
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | R2066 |
| 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 Tonna Mechanical Inc 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 # | BV002823 |
| Status | Active |
| City | Burnsville |
| Type | Contractor, Plumbing |
| Business Type | Not Available |
- When BuildZoom last verified this license, it had an expiration date of December, 2015. Check the current license status of Tonna Mechanical Inc with the The City of Burnsville, MN
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-72507-2 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Not Available |
- According to the United States Environmental Protection Agency, 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 Tonna Mechanical Inc at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | TS000623 |
| Status | Inactive |
| State | Minnesota |
| Type | Electrical |
| 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 Tonna Mechanical Inc at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | C105421 |
| Status | Inactive |
| State | Iowa |
| Type | Contractor |
| Business Type | Not Available |
- According to the Iowa Workforce Development Agency, 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 Tonna Mechanical Inc at the Iowa Workforce Development Agency.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | PM58523 |
| Status | Inactive |
| State | Minnesota |
| Type | Master Plumber |
| 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 Tonna Mechanical Inc at the Minnesota Department of Labor & Industry.
This is a sample of licensing data; click here to access a complete history.
117
BuildZoom Score
Bonded
| Bond Value | $25,000 |
12.3K
Permits
- Building permit records show that Tonna Mechanical Inc has worked on 12271 permitted projects.
Tonna Mechanical Inc Employees
BM
Brandon Mensink
Owner
KO
Kevin D. Olaughlin
PM
Patrick Murphy
Owner/Officer
SM
Steve Murphy
Owner
SM
Steven Murphy
Owner