Updated: Jan 23, 2026
Location and Projects
Address
P O BOX 40, Alamo, CA, 94507
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Massone Mechanical Inc
Massone Mechanical Inc, Alamo, Po Box 40, Alamo, CA (Employees: Linda Lee Massone Hollingshead, Linda Lee Massone-Hollingshead, and Michael Edward Hollingshead) holds a Refrigeration, Warm Air Heating, Ventilating And Air Conditioning 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 Massone Mechanical Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Massone Mechanical Inc Contact Information
Phone Number: (925) 945-8501
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Address: P O BOX 40, Alamo, CA 94507
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Building Permits by Massone Mechanical Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
(b) - building alteration - 3+ residential units or commercial (building)
2019-08-15
Installation of walk-in refrigeration unit in basement adjacent to existing cold storage for oakland museum
Valuation:
$163,000
Permit #:
B1803658
Status:
final
Fee:
$7,308
Permit Type:
N/A
Building Type:
N/A
(m) - mechanical - 3+ residential units or commercial (building)
2019-05-31
Mechanical related to installation of walk-in refrigeration unit in basement adjacent to existing cold storage for oakland museum
Valuation:
N/A
Permit #:
M1802081
Status:
final
Fee:
$828
Permit Type:
N/A
Building Type:
N/A
(b) - building alteration - 3+ residential units or commercial (building)
2020-07-30
Replace existing refrigeration unit and concrete slab at tofu making facility
Valuation:
$150,000
Permit #:
B1801714
Status:
expired
Fee:
$6,148
Permit Type:
N/A
Building Type:
N/A
(e) - electrical - 3+ residential units or commercial (building)
2019-06-21
Electrical related to installation of walk-in refrigeration unit in basement adjacent to existing cold storage for oakland museum
Valuation:
N/A
Permit #:
E1803411
Status:
final
Fee:
$566
Permit Type:
N/A
Building Type:
N/A
Install (3) (n) air conditioning units replace (2) (e) units install(n) 1-ton refrigeration system
Valuation:
$250,000
Permit #:
201906147
Status:
issued
Fee:
$6,135
Permit Type:
Commercial remode...
Building Type:
N/A
Walk in cooler racks
Valuation:
$0
Permit #:
201501931
Status:
ISSUED
Fee:
$2,677
Permit Type:
N/A
Building Type:
N/A
Install six compressors and six condensate drains for refrigeration for wine storage
Valuation:
N/A
Permit #:
M1200190
Status:
final
Fee:
$403
Permit Type:
N/A
Building Type:
N/A
Install compressor on roof and replace condensate drain
Valuation:
N/A
Permit #:
M1200970
Status:
final
Fee:
$163
Permit Type:
N/A
Building Type:
N/A
Install glycol floor heating system in subfloor of freezer.
Valuation:
$0
Permit #:
M9800345
Status:
Final
Fee:
$471
Permit Type:
N/A
Building Type:
N/A
Elephant bar -
Valuation:
N/A
Permit #:
BI-2006-5245
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install walk- in cooler/freezer refer to 2006-1013
Valuation:
$0
Permit #:
BI-2006-5568
Status:
issued
Fee:
$105
Permit Type:
N/A
Building Type:
N/A
Walk in cooler racks
Valuation:
$50,000
Permit #:
201501931
Status:
issued
Fee:
$2,677
Permit Type:
Storage racks
Building Type:
N/A
Install air conditioning
Valuation:
$13,000
Permit #:
BP00003649
Status:
canceled
Fee:
$54
Permit Type:
N/A
Building Type:
N/A
Hvac install refrigeration system
Valuation:
N/A
Permit #:
BLD2003-01042
Status:
N/A
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Walk in freezer + walk in deli box
Valuation:
N/A
Permit #:
A-C9600648
Status:
final
Fee:
$144
Permit Type:
N/A
Building Type:
N/A
(m) - mechanical - 3+ residential units or commercial (building)
2019-12-13
Replacement of hvac units (2 condensing units 2 air handlers) on roof of grocery outlet
Valuation:
N/A
Permit #:
M1702550
Status:
expired
Fee:
$718
Permit Type:
N/A
Building Type:
N/A
(b) - building alteration - 3+ residential units or commercial (building)
2019-12-13
Renovating home without permits. working on the electrical plumbing and replacing windows. also working on the windows
Valuation:
$3,000
Permit #:
B1705557
Status:
expired
Fee:
$483
Permit Type:
N/A
Building Type:
N/A
Install refrigeration system
Valuation:
$150,000
Permit #:
BLD2003-01042
Status:
expired
Fee:
$212
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Massone Mechanical Inc License info
Verified License
| License # | 615532 |
| Status | Active |
| State | California |
| Type | Refrigeration, Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Corporation |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Massone 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 | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Oak River Insurance Company |
11
Permits
- Building permit records show that Massone Mechanical Inc has worked on 11 permitted projects.
Massone Mechanical Inc Employees
LH
Linda Lee Massone Hollingshead
Officer
LM
Linda Lee Massone-Hollingshead
Officer
MH
Michael Edward Hollingshead
Rmo / Ceo / Pres