Updated: Feb 05, 2026
Location and Projects
Address
347 PRINCETON AVE, Half Moon Bay, CA, 94019
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COASTSIDE TECHNICAL SERVICES HVAC/Mechanical Contractor
COASTSIDE TECHNICAL SERVICES, 347 Princeton Ave, Half Moon Bay, CA (Owned by: James Robert Holsman) holds a Warm Air Heating, Ventilating And Air Conditioning license according to the California license board.
Their BuildZoom score of 108 ranks in the top 5% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring COASTSIDE TECHNICAL SERVICES, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
COASTSIDE TECHNICAL SERVICES Contact Information
Phone Number: (650) 712-0100
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Address: 347 PRINCETON AVE, Half Moon Bay, CA 94019
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Building Permits by COASTSIDE TECHNICAL SERVICES
This is a sample of this contractor's permits. Click here to access their complete permit history.
Installation of new mitsubishi heat pump (1) installation of air handler
Valuation:
N/A
Permit #:
BLD2025-01343
Status:
final
Fee:
$386
Permit Type:
N/A
Building Type:
N/A
Install new air handler on platform in up flow position
Valuation:
N/A
Permit #:
BLD2025-00058
Status:
final
Fee:
$385
Permit Type:
N/A
Building Type:
N/A
Replace furnace same location - auto issue - no signature required on permit card
Valuation:
N/A
Permit #:
BLD2025-00023
Status:
final
Fee:
$386
Permit Type:
N/A
Building Type:
N/A
Replace existing 70kbtu 80% furnace with a 60k btu 96% efficient furnace (located under the home)
Valuation:
N/A
Permit #:
BLD2024-01067
Status:
final
Fee:
$333
Permit Type:
N/A
Building Type:
N/A
# scanned # to mitigate vio2018-00470. convert existing 820sqft unfinished basement to finished adu. remove (e) wood stove and install (n) heat pump with two wall units. install kitchenette including (n) countertop (n) range (n) sink. create (n) full bathroom. install (n) french egress door. relevant electrical and plumbing throughout
Valuation:
N/A
Permit #:
BLD2019-00210
Status:
final
Fee:
$1,025
Permit Type:
N/A
Building Type:
N/A
Hvac furnace air conditioning and heat pump
400 Santiago Ave, El Granada, CA
2023-09-05
Old heating unit failed. installing new one. taking off wall than bolting new one
Valuation:
N/A
Permit #:
BLD2023-02275
Status:
canceled
Fee:
$333
Permit Type:
N/A
Building Type:
N/A
Single family dwelling - water heater replacement
2019-05-30
Remove existing water heater install new water heater
Valuation:
$1,000
Permit #:
B31068
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BLD2025-02045
Status:
final
Fee:
$277
Permit Type:
N/A
Building Type:
N/A
Single family dwelling - furnace replacement
2019-05-30
Remove existing furnace install new furnace
Valuation:
$2,500
Permit #:
B31067
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove furnace and gaswater heater and replace in garage
Valuation:
$4,000
Permit #:
BLD2011-00281
Status:
final
Fee:
$1,301
Permit Type:
N/A
Building Type:
N/A
Mec & plm: remove replace two (2) furnaces - 100, 0000 btu & 50, 000 btu same location under house. remove replace two (2) water heaters - 40 gallon & 50 gallon same location under house. replace damaged ducting & insulation
Valuation:
$10,000
Permit #:
BLD2010-00185
Status:
final
Fee:
$639
Permit Type:
N/A
Building Type:
N/A
# scanned # furnace replacement in kind 80 000btu - remove existing and install new in same location no new ducts or registers
Valuation:
N/A
Permit #:
BLD2013-01837
Status:
final
Fee:
$218
Permit Type:
N/A
Building Type:
N/A
#scanned# furnace replacement: gas 96% fau with duct repair and insu
Valuation:
$3,500
Permit #:
BLD2013-01892
Status:
final
Fee:
$219
Permit Type:
N/A
Building Type:
N/A
# scanned # replace fau with new high efficiency 95% 100kbtu 4-ton
Valuation:
N/A
Permit #:
BLD2014-00483
Status:
final
Fee:
$301
Permit Type:
N/A
Building Type:
N/A
# scanned # repace fau with new 80kbtu 95% 4-ton 2-stage variable
Valuation:
N/A
Permit #:
BLD2014-00489
Status:
final
Fee:
$301
Permit Type:
N/A
Building Type:
N/A
#scanned# fau replacement: remove existing install new tempstar 110 kbtu 5-ton 80%
Valuation:
$2,500
Permit #:
BLD2013-01207
Status:
final
Fee:
$177
Permit Type:
N/A
Building Type:
N/A
#scanned# replace fau: new 70 000 btu 80% 3-ton furnace
Valuation:
N/A
Permit #:
BLD2013-01772
Status:
final
Fee:
$301
Permit Type:
N/A
Building Type:
N/A
#scanned# replace fau: 67 000 btu same location
Valuation:
$2,000
Permit #:
BLD2013-01512
Status:
final
Fee:
$219
Permit Type:
N/A
Building Type:
N/A
Replace old furnace with new furnace
Valuation:
$5,000
Permit #:
B30665
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace furnace with new carrier 88k btu 2 stage 80% furnace - model number 58ctx090114
Valuation:
$3,500
Permit #:
B29731
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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COASTSIDE TECHNICAL SERVICES Reviews
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Verified License
BuildZoom confirmed this contractor's license
COASTSIDE TECHNICAL SERVICES License info
Verified License
| License # | 923106 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for COASTSIDE TECHNICAL SERVICES at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
108
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Wesco Insurance Company |
64
Permits
- Building permit records show that COASTSIDE TECHNICAL SERVICES has worked on 64 permitted projects.
COASTSIDE TECHNICAL SERVICES Employees
JH
James Robert Holsman
Owner