Updated: May 23, 2026
Location and Projects
Address
1119 11TH AVE, Longview, WA, 98632
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Diversified Mechanical Svs Inc
Diversified Mechanical Svs Inc, 1119-11 Th Ave, Longview, WA (Owned by: Voth, Joshua Michael) holds a Electrical Contractor, General license and 9 other licenses according to the Tukwila license board.
Their BuildZoom score of 107 ranks in the top 6% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Diversified Mechanical Svs Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Diversified Mechanical Svs Inc Services
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Diversified Mechanical Svs Inc Contact Information
Phone Number: (360) 747-2002
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Address: 1119 11TH AVE, Longview, WA 98632
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Diversified Mechanical Svs Inc Longview
Quality
107
94th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Diversified Mechanical Svs Inc has a BuildZoom score of 107, which places them above 94% of 128,670 contractors in Washington.
Activity
|
10 projects
|
2025 |
|
6 projects
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that Diversified Mechanical Svs Inc has worked on at least
17.0 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
|
16 projects
|
Mechanical projects |
|
16 projects
|
HVAC projects |
Analyzing permits over the last 4 years shows that Diversified Mechanical Svs Inc mostly works on
hvac project
and mechanical project
projects.
Pricing
|
1 project
|
< $5k |
|
11 projects
|
$5k-$20k |
|
1 project
|
$20k-$50k |
The typical size of their permits is approximately $11,000. 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.
Building Permits by Diversified Mechanical Svs Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
2 hour closure of nb lane of commerce avenue and nb sidewalk including 4 parking spots for crane lift for a heat pump replacement at 1262 commerce ave
Valuation:
N/A
Permit #:
PWD2025-0097
Status:
complete
Fee:
$77
Permit Type:
N/A
Building Type:
Commercial-right ...
Heat pump with air handler - like for like replacement indoor unit located on interior wall of garage and heat pump is located on side of garage
Valuation:
$10,000
Permit #:
25-02-2213
Status:
expired
Fee:
$180
Permit Type:
N/A
Building Type:
N/A
Installation of 2 head ductless heat pump system - od unit will be located on northside of home - id unit 18kw located in family room id unit 12kw located in front room
Valuation:
$10,000
Permit #:
24-01-2078
Status:
final
Fee:
$180
Permit Type:
N/A
Building Type:
N/A
Installation of heat pump (back of house) with air handler (downstairs closet)
Valuation:
$20,000
Permit #:
25-04-2700
Status:
expired
Fee:
$180
Permit Type:
N/A
Building Type:
N/A
Heat pump with air handler replacement
Valuation:
$20,000
Permit #:
25-02-2362
Status:
expired
Fee:
$180
Permit Type:
N/A
Building Type:
N/A
Heat pump with air handler replacement
Valuation:
$13,000
Permit #:
25-05-2953
Status:
expired
Fee:
$180
Permit Type:
N/A
Building Type:
N/A
Installation of heat pump with air handler
Valuation:
$11,000
Permit #:
25-02-2289
Status:
final
Fee:
$180
Permit Type:
N/A
Building Type:
N/A
Installation of 1-12k btu ahu 1-24k btu ahu with 36k btu heat pump - multizone mitsubishi system
Valuation:
$25,000
Permit #:
MCH-2024-01908
Status:
complete
Fee:
N/A
Permit Type:
Mechanical
Building Type:
N/A
Air conditioning w coil
Valuation:
$3,000
Permit #:
MCH-2025-01350
Status:
complete
Fee:
N/A
Permit Type:
Mechanical
Building Type:
N/A
Install a forced air heat pump system in the existing home. one air handler and one heat pump with air ducting
Valuation:
N/A
Permit #:
LV-21-02025
Status:
issued
Fee:
$70
Permit Type:
N/A
Building Type:
Mechanical permit...
Heat pump with air handler replacement
Valuation:
$15,000
Permit #:
25-07-3253
Status:
final
Fee:
$180
Permit Type:
N/A
Building Type:
N/A
Heat pump with air handler replacement
Valuation:
$12,000
Permit #:
25-07-3252
Status:
final
Fee:
$180
Permit Type:
N/A
Building Type:
N/A
Replace the existing electric furnace and heat pump with a gas furnace and air conditioner
Valuation:
N/A
Permit #:
LV-21-01505
Status:
issued
Fee:
$70
Permit Type:
N/A
Building Type:
Mechanical permit...
Installation of 1 head ductless heat pump system
Valuation:
$6,000
Permit #:
MCH-2024-01979
Status:
complete
Fee:
N/A
Permit Type:
Mechanical
Building Type:
N/A
Install a 2 head ductless heat pump system. electrical separate
Valuation:
N/A
Permit #:
LV-21-01077
Status:
final
Fee:
$90
Permit Type:
N/A
Building Type:
Mechanical permit...
Installation of heat pump with air handler
Valuation:
$10,000
Permit #:
24-09-3736
Status:
final
Fee:
$180
Permit Type:
N/A
Building Type:
N/A
Thermostat and low voltage wiring for hvac system alteration
Valuation:
N/A
Permit #:
LV-21-01506
Status:
issued
Fee:
$54
Permit Type:
N/A
Building Type:
Electrical permit...
Replace the heat pump system with a gas furnace and air conditioner install gas piping
Valuation:
$9,300
Permit #:
MCH-2020-00764
Status:
complete
Fee:
N/A
Permit Type:
Mechanical
Building Type:
N/A
Heat pump with ahu changeout
Valuation:
$15,000
Permit #:
MCH-2024-02431
Status:
complete
Fee:
N/A
Permit Type:
Mechanical
Building Type:
N/A
Install a single head ductless heat pump
Valuation:
N/A
Permit #:
LV-21-01627
Status:
final
Fee:
$98
Permit Type:
N/A
Building Type:
Mechanical permit...
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Diversified Mechanical Svs Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Diversified Mechanical Svs Inc License info
Verified License
| License # | DIVERMS757JH |
| Status | Active |
| City | Tukwila |
| Type | Electrical Contractor, General |
| Class | Limited Liability Company |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Diversified Mechanical Svs Inc at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | DIVERMS761OD |
| Status | Active |
| City | Tukwila |
| Type | Electrical Contractor, Hvac/Rfrg |
| Class | Limited Liability Company |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Diversified Mechanical Svs Inc at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | DIVERMS770OM |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Limited Liability Company |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Diversified Mechanical Svs Inc at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | DIVERMS757JH |
| Status | Active |
| State | Washington |
| Type | Electrical Contractor, Electrical Contractor |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Diversified Mechanical Svs Inc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | DIVERMS770OM |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Diversified Mechanical Svs Inc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | DIVERMS955J8 |
| Status | Inactive |
| City | Tukwila |
| Type | Construction Contractor, Heating/Vent/Air Conditioning And Refrig (Hvac/R) |
| Class | Corporation |
| Business Type | Corporation |
- According to the The City of Tukwila, WA, 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 Diversified Mechanical Svs Inc at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | DIVERMS980NA |
| Status | Inactive |
| City | Tukwila |
| Type | Electrical Contractor, Hvac/Rfrg |
| Class | Corporation |
| Business Type | Corporation |
- According to the The City of Tukwila, WA, 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 Diversified Mechanical Svs Inc at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | DIVERMS761OD |
| Status | Inactive |
| State | Washington |
| Type | Electrical Contractor, Electrical Contractor |
| Business Type | Corporation |
- According to the Washington State Department of Labor & Industries, 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 Diversified Mechanical Svs Inc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | DIVERMS980NA |
| Status | Inactive |
| State | Washington |
| Type | Electrical Contractor, Electrical Contractor |
| Business Type | Corporation |
- According to the Washington State Department of Labor & Industries, 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 Diversified Mechanical Svs Inc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | DIVERMS955J8 |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Corporation |
- According to the Washington State Department of Labor & Industries, 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 Diversified Mechanical Svs Inc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
107
BuildZoom Score
Insured
| Insurer | American Fire & Casualty Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Lexon Ins Co |
| Bond Value | $6,000 |
93
Permits
- Building permit records show that Diversified Mechanical Svs Inc has worked on 93 permitted projects.
Diversified Mechanical Svs Inc Employees
CH
Carl Hendrickson
President
DW
Davis Weller
Partner/Member
HA
Hendrickson, Carl A
Owner
HA
Hendrickson, Carl Adolph
Owner
JH
Jane Hendrickson
Vice President
JV
Joshua Voth
Partner/Member
JH
Julia Hua
Partner/Member
KH
Kenneth Hendrickson
Vice President
TV
Taylor Voth
Partner/Member
TV
Taylot Voth
Partner/Member
VM
Voth, Joshua Michael
Owner
WD
Weller Davis
Partner/Member
WI
Weller Davis Iii
Partner/Member