Updated: Jul 22, 2026
Location and Projects
Address
562 GIRARD STREET, San Francisco, CA, 94134
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Yum's Mechanical Co Inc
Yum's Mechanical Co Inc, 562 Girard St, San Francisco, CA (Employees: Brenda Yim Lan Jung, Brenda Yim Lan Jung, and Kwok Yum Jung) holds a Boiler, Hot Water Heating And Steam Fitting, Electrical, Warm Air Heating, Ventilating And Air Conditioning, Sheet Metal license and 2 other licenses according to the California license board.
Their BuildZoom score of 100 ranks in the top 13% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Yum's Mechanical Co Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Yum's Mechanical Co Inc Contact Information
Phone Number: (415) 642-1818
Address: 562 GIRARD STREET, San Francisco, CA 94134
Yum's Mechanical Co Inc San Francisco
Quality
100
87th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Yum's Mechanical Co Inc has a BuildZoom score of 100, which places them above 87% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
|
2 projects
|
2024 |
Our building permit records indicate that Yum's Mechanical Co Inc has worked on at least
3.0 projects over the past 2 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.
Pricing
|
1 project
|
$100k-$250k |
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 Yum's Mechanical Co Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
4th 5th and 6th floor; furnish and install 6 heatpumps and 4 coils with associated ductwork and refrigerant line sets
Valuation:
$222,800
Permit #:
202501087963
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
Work category: 1m; replace first floor furnace and modify flue pipe. replace second floor furnace in attic with 1 heat pump and 2 fan coil
Valuation:
N/A
Permit #:
PMW20230606581
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5m; associated refrigerant line-sets for 1 heatpump and 7 fan coils. permit 202408168872 (building)
Valuation:
N/A
Permit #:
PMW20241018493
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
1 combined flue pipe with booster fan in basement for 2 domestic water heaters and 1 heating boiler to terminate to roof. permit 201905029560 ( building)
Valuation:
N/A
Permit #:
PM20210329037
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5m; 6 heatpumps and 4 fan coils with associated ductwork and refrigerant line-sets
Valuation:
N/A
Permit #:
PMW20241024664
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install type ii (2) condensate hood exhaust fan and make-up air fan ref pa20190013240
Valuation:
$14,600
Permit #:
202111051934
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
05 - food/beverag...
One flue pipe for one furnace on ground floor
Valuation:
N/A
Permit #:
PM20210326002
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Flue for 3 heating boilers
Valuation:
N/A
Permit #:
PM20200316598
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 3 new csd2 hepa filter led indicator speed contrl interlock with rtu-2. install one exh2 and connect to extg duct. relocate one crr and connect to extg duct. replace extg motor with 1/2 hp motor on ef-01. ref app#201410148823
Valuation:
$16,800
Permit #:
201501226383
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
67 - clinics-medi...
Four furnaces and ductwork in basement to supply air to 1st fl. 1st fl: 4 bathrm exhaust d=fans and duct work. 2nd fl: 2 bathrm exhaust fans and ductwork. 3rd fl: 2 bathroom exhaust fans &duct work.rooftop: 4 units &ductwork to supply air to 2nd & 3rd fl. exhaust fan to south side of building
Valuation:
$100,000
Permit #:
201103162208
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
1 kitchen exhaust fan and duct (1) make up air unit and duct. 1 fan coil unit and duct. 1 fan coil/heat pump system and duct. 1 bathroom exhaust fan and duct. 1 aoutside air fan and duct
Valuation:
$68,000
Permit #:
201302260943
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
09 - recreation b...
Cut open at the side of hood for exhaust. 16ga gsm 9"x7 from hood to (e) 24"x7 exhaust duct maher na
Valuation:
$4,180
Permit #:
201606291175
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
05 - food/beverag...
Replace rooftop gas pack unit with new (5 ton) & (2 ton). new split system cooling system fur server room (1 ton). replace all ductwork and diffusers with new. restroom exhaust fans to be installed. reference app#200812017503
Valuation:
$40,000
Permit #:
200901281009
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
Unit #201: ductwork duct smoke detector and registers to connect to extg fcu-201 and fcu-209. ref app#201409035287. n/a for maher
Valuation:
$23,800
Permit #:
201503181204
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
Clairemont mesa - building permit for tenant improvement to an existing restaurant use. scope of work to include demolish new partition walls ceilings minor electrical mechanical relocate equipment and relocate plumbing fixtures - no new fixtures. zone: cc-1-3 overlays: cmhloz cpioz-b
Valuation:
$45,791
Permit #:
340932
Status:
complete
Fee:
$1,496
Permit Type:
Add/alt tenant im...
Building Type:
N/A
Midway-pac hi cp: base zone cc-1-3/co-1-2. building permit for interior tenant improvement with scope of work proposed demo/new partitions new plumbing mechanical electrical ceiling. new counters hood freezer and cooler. features: ae/ch/census tk 68
Valuation:
$39,469
Permit #:
347196
Status:
complete
Fee:
$1,195
Permit Type:
Add/alt tenant im...
Building Type:
N/A
Replace one wall furnace with one new wall furnace
Valuation:
$0
Permit #:
PM20151209175
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace (2) existing water cooles indoor units with 2 new like units
Valuation:
$0
Permit #:
PM20140911006
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
One rooftop electric package unit. duct work difusers and thermastat control. ref app#2013.0509.6571
Valuation:
$30,000
Permit #:
201306270679
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
Replace existing water cooled indoor units with 3 like units
Valuation:
N/A
Permit #:
PM20160519579
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Yum's Mechanical Co Inc Reviews
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Yum's Mechanical Co Inc License info
Verified License
| License # | 583839 |
| Status | Active |
| State | California |
| Type | Boiler, Hot Water Heating And Steam Fitting, Electrical, Warm Air Heating, Ventilating And Air Conditioning, Sheet Metal |
| Business Type | Corporation |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Yum's Mechanical Co Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 583839 |
| Status | Inactive |
| City | Butte County |
| Type | Contractor |
| Business Type | Corporation |
- According to the Butte County, CA, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Yum's Mechanical Co Inc at the Butte County, CA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 397942 |
| Status | Inactive |
| State | California |
| Type | Electrical |
| 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.
Check this license's status for Yum's Mechanical Co Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
100
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Oak River Insurance Company |
290
Permits
- Building permit records show that Yum's Mechanical Co Inc has worked on 290 permitted projects.
Yum's Mechanical Co Inc Employees
BJ
Brenda Yim Lan Jung
Officer
BJ
Brenda Yim Lan Jung
Officer
KJ
Kwok Yum Jung
Rmo / Ceo / Pres
PJ
Park Hong Jung
Officer
PJ
Parkin Jung
Officer