Updated: May 01, 2026
Location and Projects
Address
2418 6TH STREET, Berkeley, CA, 94710
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Walter Mork Co HVAC/Mechanical Contractor
Walter Mork Co Inc at 2418 6TH STREET, Berkeley, CA 94710, held a HVAC/Mechanical Contractor license (#337516) with the California contractors license board with an expiration date of 04-30-2030. We last verified the license was inactive on 04-30-2026.
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 336,931 California contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.
Walter Mork Co Inc Contact Information
Phone Number: (510) 845-0992
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Address: 2418 6TH STREET, Berkeley, CA 94710
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Walter Mork Co Inc Berkeley
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Walter Mork Co Inc, click “This is My Business” to update your information.
Activity
|
1 project
|
2025 |
|
6 projects
|
2024 |
|
10 projects
|
2023 |
Our building permit records indicate that Walter Mork Co 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
|
15 projects
|
HVAC projects |
Analyzing permits over the last 4 years shows that Walter Mork Co Inc mostly works on
hvac project
projects.
Pricing
|
1 project
|
< $5k |
|
8 projects
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
The typical size of their permits is approximately $14,981. 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.
Replace existing wall furnace with same size and configuration
Valuation:
N/A
Permit #:
B2025-00367
Status:
issued
Fee:
$180
Permit Type:
N/A
Building Type:
N/A
Replace existing floor furnace with split-system heat pump. install associated ductwork refrigerant piping and condensation drain (mech)
Valuation:
$12,100
Permit #:
M22-0003
Status:
final
Fee:
$445
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; installing single heat pump on roof with refrigerant piping to four inside units (each serving a single room)
Valuation:
N/A
Permit #:
PMW20220831515
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
We are extending the bar and adding kitchen equipment
Valuation:
$60,000
Permit #:
B2024-01978
Status:
plancheck
Fee:
$1,550
Permit Type:
N/A
Building Type:
N/A
Remove old gas furnace and install central heat pump
Valuation:
$16,495
Permit #:
BD23-0452
Status:
final
Fee:
$342
Permit Type:
Repair (m e p)
Building Type:
N/A
Minor permit for reroof hvac water heater seismic gas shut-off valve. (r-3 occupancies only)
2023-03-13
Installing 2 - zone heat pump as part of addition
Valuation:
$16,000
Permit #:
B2023-01131
Status:
issued
Fee:
$127
Permit Type:
N/A
Building Type:
N/A
Replace furnace and addition central air conditioner (electrical work will be done by another contractor) electrical permit required
Valuation:
N/A
Permit #:
B2021-01737
Status:
final
Fee:
$127
Permit Type:
N/A
Building Type:
N/A
Remove two wall furnaces and install a central ducted heat pump heating and cooling system
Valuation:
$23,000
Permit #:
BIM23-007235
Status:
final
Fee:
$638
Permit Type:
N/A
Building Type:
N/A
Install new central heating system in attic
Valuation:
$13,000
Permit #:
BD23-0660
Status:
issued
Fee:
$381
Permit Type:
Repair (m e p)
Building Type:
N/A
(m) - mechanical - 3+ residential units or commercial (building)
2021-02-10
Mechanical to install hvac equipment dual unit heat/cool 3 air conditioning units 9 heat/cool ducts 2 fans i envir. air duct on the rooftop near the rear of the building per plans and engineered structural calcs. 12-29-20 additional exhaust fan blower and ducting
Valuation:
N/A
Permit #:
M1901277
Status:
final
Fee:
$1,480
Permit Type:
N/A
Building Type:
N/A
(b) - building alteration - 3+ residential units or commercial (building)
2021-08-19
Install hvac equipment on the rooftop near the rear of the building per plans and engineered structural calcs
Valuation:
$150,000
Permit #:
B1903711
Status:
expired
Fee:
$5,854
Permit Type:
N/A
Building Type:
N/A
Minor permit for reroof hvac water heater seismic gas shut-off valve. (r-3 occupancies only)
2023-08-11
Replace central gas furnaces with central heat pumps (main residence plus adu)
Valuation:
N/A
Permit #:
B2023-04143
Status:
issued
Fee:
$127
Permit Type:
N/A
Building Type:
N/A
Replace furnace and install air conditioner
Valuation:
$20,900
Permit #:
B2022-00700
Status:
issued
Fee:
$187
Permit Type:
N/A
Building Type:
N/A
Replace furnace and air conditioner
Valuation:
$11,000
Permit #:
B2022-05259
Status:
issued
Fee:
$127
Permit Type:
N/A
Building Type:
N/A
Replace furnace and air conditioner
Valuation:
$13,000
Permit #:
B2022-05130
Status:
issued
Fee:
$127
Permit Type:
N/A
Building Type:
N/A
Minor permit for reroof hvac water heater seismic gas shut-off valve. (r-3 occupancies only)
2023-08-24
Replace existing wall furnace with new unit of same configuration
Valuation:
N/A
Permit #:
B2023-04370
Status:
issued
Fee:
$127
Permit Type:
N/A
Building Type:
N/A
Replace forced air gas furnace. subject to field inspection
Valuation:
N/A
Permit #:
B2021-01733
Status:
issued
Fee:
$127
Permit Type:
N/A
Building Type:
N/A
Replace two heat pumps and reconfigure existing ducting
Valuation:
N/A
Permit #:
B2021-01048
Status:
final
Fee:
$174
Permit Type:
N/A
Building Type:
N/A
Remove gas furnace/instal central heat pump
Valuation:
$14,900
Permit #:
BD23-1044
Status:
final
Fee:
$395
Permit Type:
Repair (m e p)
Building Type:
N/A
Replace existing gas wall furnace
Valuation:
N/A
Permit #:
B2024-03775
Status:
issued
Fee:
$168
Permit Type:
N/A
Building Type:
N/A
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Walter Mork Co Inc Reviews
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Walter Mork Co Inc License info
Inactive License
| License # | 337516 |
| Status | Inactive |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Sheet Metal |
| Business Type | Corporation |
- According to the California Contractors State License 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 Walter Mork Co Inc at the California Contractors State License Board.
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 Walter Mork Co Inc, click “This is My Business” to update your information.
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Workers' Compensation History |
378
Permits
- Building permit records show that Walter Mork Co Inc has worked on 378 permitted projects.
Walter Mork Co Inc Employees
BC
Berkeley Holtz Choate
Officer
CM
Carmen Melissa Mork
Officer
FM
Fredric R Mork
Rmo / Ceo / Pres
WM
Walter R Mork
Rmo / Ceo / Pres