Updated: May 24, 2026
Location and Projects
Address
117 17TH AVE, San Mateo, CA, 94402
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Dorst HVAC Inc
Dorst HVAC Inc at 117 17TH AVE, San Mateo, CA 94402, held a HVAC/Mechanical Contractor license (#1026568) with the California contractors license board with an expiration date of 05-31-2019. We last verified the license was expired on 05-23-2026.
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 bidding system to be easily matched to qualified, licensed professionals in your area.
Dorst HVAC Inc Contact Information
Phone Number: (650) 763-1310
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Address: 117 17TH AVE, San Mateo, CA 94402
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This is a sample of this contractor's permits. Click here to access their complete permit history.
1-story single family dwelling mechanical work: replace and installing (1) 70k btu furnace at the crawspace with ductwork. install new (2) air conditioning condensers - one at the front and the other at the rear of the property
Valuation:
$20,000
Permit #:
MH-2018-265836
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
#scanned# hvac: remove (e) wall heater and install new split system heat pump. 240 dedicated circuit and new duct work. condenser located at rear/side
Valuation:
N/A
Permit #:
BLD2018-01139
Status:
final
Fee:
$462
Permit Type:
N/A
Building Type:
N/A
Furnace replacement in same location. installation of new zoning system adding (4) motorized damper and (1) bypass duct
Valuation:
N/A
Permit #:
PM20190102866
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of split system heat pump with new ductwork system only. electrical work will be pull separately by a electrician
Valuation:
$9,500
Permit #:
MH-2018-266215
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
#scanned# installing new air conditioning to existing furnace and ductwork. new 24 volt dedicated circuit to air conditioning
Valuation:
N/A
Permit #:
BLD2018-01041
Status:
final
Fee:
$294
Permit Type:
N/A
Building Type:
N/A
Replace (e) rootop mounted air conditioning unit and air handler at same location
Valuation:
$10,745
Permit #:
MEP-2019-270390
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of outdoor mutli zone ductless split system. install (n) 240v 30amp circuit and 120v 15amp receptacles
Valuation:
$13,000
Permit #:
MEP-2018-268795
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of (2) new condensers and (2) new evaporator coils. connect to existing furance and duckwork
Valuation:
$18,000
Permit #:
MH-2018-266089
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install (n) air conditioning unit at side of house and (n) 240v circuit for condenser
Valuation:
$9,000
Permit #:
MH-2018-267672
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install (n) air conditioning condenser and evaporator coil to existing furnace
Valuation:
$7,500
Permit #:
MH-2018-265951
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install air conditioning condenser underneath nook with 25 amp dedicated circuit
Valuation:
N/A
Permit #:
BLD2018-52403
Status:
final
Fee:
$107
Permit Type:
N/A
Building Type:
N/A
#scanned# adding air conditioning unit to (e) heater. replacing duct work
Valuation:
N/A
Permit #:
BLD2018-01492
Status:
final
Fee:
$294
Permit Type:
N/A
Building Type:
N/A
Installation of new duct work to (e) boots
Valuation:
$3,500
Permit #:
201905231535
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Replace furnace in same location in basement to existing ductwork
Valuation:
N/A
Permit #:
PM20180419709
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Furnace replacement at same location
Valuation:
N/A
Permit #:
PM20190314977
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace (e) 70k btu furnace at same location (closet)
Valuation:
$6,700
Permit #:
MH-2018-267392
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace furnace in same location - existing ductwork
Valuation:
$5,000
Permit #:
MEP2018-00382
Status:
final
Fee:
$162
Permit Type:
(mech) replace HVAC
Building Type:
N/A
# scanned # replacing (e) duct work with (n)
Valuation:
N/A
Permit #:
BLD2018-02635
Status:
final
Fee:
$126
Permit Type:
N/A
Building Type:
N/A
Furnace and condenser replacemment in existing location
Valuation:
$12,688
Permit #:
BLD2019-00118
Status:
final
Fee:
$403
Permit Type:
Repair
Building Type:
N/A
New heat pump split system. new 240 electrical circuits
Valuation:
$15,000
Permit #:
M2018-0058
Status:
final
Fee:
$439
Permit Type:
Mechanical
Building Type:
N/A
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Dorst HVAC Inc License info
Inactive License
| License # | 1026568 |
| Status | Inactive |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| 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 Dorst HVAC Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
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- *No active license on file. If you are Dorst HVAC Inc, click “This is My Business” to update your information.
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
34
Permits
- Building permit records show that Dorst HVAC Inc has worked on 34 permitted projects.
Dorst HVAC Inc Employees
SD
Stephen Rey Dorst
Rmo / Ceo / Pres