Updated: Jul 14, 2026
Location and Projects
Address
P O BOX 674, Applegate, CA, 95703
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Platt Mechanical Inc
Platt Mechanical Inc, Applegate, Po Box 674, Applegate, CA (Employees: Debra Jean Platt and Mark Steven Platt) holds a General Building, Warm Air Heating, Ventilating And Air Conditioning license and 1 other license according to the California license board.
Their BuildZoom score of 96 ranks in the top 20% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Platt Mechanical Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Platt Mechanical Inc Contact Information
Phone Number: (530) 308-5943
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Address: P O BOX 674, Applegate, CA 95703
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Platt Mechanical Inc Applegate
Quality
96
80th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Platt Mechanical Inc has a BuildZoom score of 96, which places them above 80% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
Our building permit records indicate that Platt Mechanical Inc has worked on at least
1.0 project over the past year.
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
|
$5k-$20k |
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.
Miscellaneous water heater electrical plumbing hvac mechanical solar/pv
2022-10-13
Heat pump air handler and rooftop heat pump condensor
Valuation:
$8,800
Permit #:
MISC2022-01236
Status:
issued
Fee:
$402
Permit Type:
N/A
Building Type:
N/A
Residential: limited review - electrical mechanical plumbing roof solar etc
2025-01-13
New hvac mini split in garage no duct work
Valuation:
$9,800
Permit #:
BLD24-07429
Status:
complete
Fee:
$186
Permit Type:
Alteration
Building Type:
N/A
Residential: limited review - electrical mechanical plumbing roof solar etc
2021-11-24
New installl (2) one ton mini split systems
Valuation:
$8,875
Permit #:
BLD21-06403
Status:
complete
Fee:
$285
Permit Type:
Alteration
Building Type:
N/A
Install 500gl. above ground propane tank with 3/4 inch x 200ft. polyethylene gas line. size gasline to furnace to accomodate future on demand gas water heater. new horizontal furnace 90 000 btu. new 17.5kw standby propane generator under existing deck. permit is good for two inspections. additional inspections are $140.36 each. final inspection required
Valuation:
$30,000
Permit #:
14001903
Status:
complete
Fee:
$494
Permit Type:
N/A
Building Type:
N/A
New 3 ton split system upflow furnace indoor coil propane gas 70 000 afue 78% seer 13.0. duct test required. permit is good for two inspections. additional inspections are $136.28 each. final inspection required
Valuation:
$10,000
Permit #:
13002074
Status:
complete
Fee:
$344
Permit Type:
N/A
Building Type:
N/A
C/o hvac split rplce ductwork
Valuation:
N/A
Permit #:
RMEC19-02083
Status:
final
Fee:
$248
Permit Type:
Mechanical
Building Type:
N/A
Heat pump changeout to 3 ton split system upflow furnace 60 000 btu propane gas hspf 7.7 seer 13.0 duct testing required. permit is good for one inspection. additional inspections are $125.78 each. final inspection required
Valuation:
N/A
Permit #:
13000157
Status:
complete
Fee:
$101
Permit Type:
N/A
Building Type:
N/A
Single family or duplex – water heater, electrical, plumbing, hvac, mechanical, solar/pv, electric v
2017-11-09
Remove and replace furnace and ac only 30 btu 14 seer
Valuation:
$5,000
Permit #:
MISR2017-08569
Status:
issued
Fee:
$301
Permit Type:
N/A
Building Type:
N/A
Mechanical permit remove existing and install new package unit 78 percent afue 13.0 seer for an existing single family residence. permit is good for up to 2 site visits
Valuation:
$5,191
Permit #:
11000023
Status:
complete
Fee:
$317
Permit Type:
N/A
Building Type:
N/A
Remove existing equipment and replace with furnace and condensor replace duct work addition new digital terhermostat relocate bedroom duct relocate dinning duct. new disconnect new pvc fle
Valuation:
N/A
Permit #:
10000680
Status:
complete
Fee:
$317
Permit Type:
N/A
Building Type:
N/A
Residential: limited review - electrical mechanical plumbing roof solar etc
2015-04-13
Furnace and water heater replacement **energy forms to be submitted at the time of the 1st inspection 3-9-15 truckee fire reveiwed site plan for propane location- ok ps. plan put into file
Valuation:
$15,000
Permit #:
BLD15-00034
Status:
complete
Fee:
$243
Permit Type:
Alteration
Building Type:
N/A
Miscellaneous water heater electrical plumbing hvac mechanical solar/pv electric vehicle equip. gene
2013-01-23
Replace split system heat pump air handler & condenser with new
Valuation:
$6,500
Permit #:
MISR2013-00344
Status:
final
Fee:
$287
Permit Type:
Heating air condi...
Building Type:
N/A
Replace heat pump
Valuation:
$5,494
Permit #:
RMEC15-01030-0
Status:
complete
Fee:
N/A
Permit Type:
Res.HVAC c/o
Building Type:
Residential sf sm...
Miscellaneous water heater electrical plumbing hvac mechanical solar/pv electric vehicle equip. gene
2013-01-10
Replace existing furnace & air conditioning with new
Valuation:
$5,000
Permit #:
MISR2013-00109
Status:
final
Fee:
$303
Permit Type:
Heating air condi...
Building Type:
N/A
Hvac split system c/o
Valuation:
N/A
Permit #:
RMEC20-01439
Status:
final
Fee:
$248
Permit Type:
Mechanical
Building Type:
N/A
Miscellaneous water heater electrical plumbing hvac mechanical solar/pv electric vehicle equip. gene
2012-07-03
E-hvac changeout split system heat pump
Valuation:
$7,000
Permit #:
MISR2012-03681
Status:
final
Fee:
$287
Permit Type:
Heating air condi...
Building Type:
N/A
Miscellaneous water heater electrical plumbing hvac mechanical solar/pv electric vehicle equip. gene
2011-01-04
Hvac remove and replace existing equipment
Valuation:
$8,355
Permit #:
MISR2010-06633
Status:
final
Fee:
$332
Permit Type:
Heating air condi...
Building Type:
N/A
Install 3 ton heat pump. new pad complete r-6 flexible duct system hers testing
Valuation:
$500
Permit #:
10001305
Status:
complete
Fee:
$443
Permit Type:
N/A
Building Type:
N/A
2 sv r3 vn-remove existing package gas-electric unit and replace with new. less than 15 percent hers test
Valuation:
$1,500
Permit #:
07001257
Status:
complete
Fee:
$153
Permit Type:
N/A
Building Type:
N/A
Change out existing hvac package unit for an r-3 single family dwelling. 80% afue 15 seer
Valuation:
$6,495
Permit #:
10001228
Status:
complete
Fee:
$317
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Platt Mechanical Inc License info
Verified License
| License # | 1021759 |
| Status | Active |
| State | California |
| Type | General Building, Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Corporation, Sole Ownership |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Platt Mechanical 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 # | 530085 |
| Status | Inactive |
| State | California |
| Type | General Building, Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Corporation, Sole Ownership |
- 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 Platt Mechanical Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
96
BuildZoom Score
Bonded
| Bonded Agent | Wesco Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Clear Spring Property & Casualty Company |
72
Permits
- Building permit records show that Platt Mechanical Inc has worked on 72 permitted projects.
Platt Mechanical Inc Employees
DP
Debra Jean Platt
Officer
MP
Mark Steven Platt
Rmo / Ceo / Pres