Updated: Jan 21, 2026
Location and Projects
Address
280 CRESTVIEW AVENUE, Martinez, CA, 94553
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Hammer's Heating & Air Conditioning
Hammer's Heating & Air Conditioning, 280 Crestview Ave, Martinez, CA (Employee: Michael Keith Hammer) holds a Warm Air Heating, Ventilating And Air Conditioning license 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 Hammer's Heating & Air Conditioning, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Hammer's Heating & Air Conditioning Services
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Hammer's Heating & Air Conditioning Contact Information
Phone Number: (925) 229-2779
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Address: 280 CRESTVIEW AVENUE, Martinez, CA 94553
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Building Permits by Hammer's Heating & Air Conditioning
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replace electric heat pump unit 117
Valuation:
N/A
Permit #:
BIM18-005640
Status:
final
Fee:
$325
Permit Type:
N/A
Building Type:
N/A
(lower unit) replace wall furnace with forced air furnace located in attic (gas line & electrical to be obtained by others)
Valuation:
$2,000
Permit #:
M09-0006
Status:
final
Fee:
$232
Permit Type:
N/A
Building Type:
N/A
3 roof top fau untis and 3 bathroom exhaust fans with ducting--add bracing at roof
Valuation:
$13,500
Permit #:
BI313617
Status:
final
Fee:
$415
Permit Type:
N/A
Building Type:
N/A
Furnace replacement located in attic. attic not to be conditioned space
Valuation:
N/A
Permit #:
BI324164
Status:
final
Fee:
$78
Permit Type:
N/A
Building Type:
N/A
Replace 2 wall furnaces and flues
Valuation:
N/A
Permit #:
RM1001495
Status:
final
Fee:
$223
Permit Type:
N/A
Building Type:
N/A
(1/2-upper unit) replace wall furnace w/new flue
Valuation:
$5,900
Permit #:
M09-0007
Status:
final
Fee:
$170
Permit Type:
N/A
Building Type:
N/A
Replace roof pack with attic installed hvac
Valuation:
N/A
Permit #:
00080281
Status:
final
Fee:
$40
Permit Type:
N/A
Building Type:
N/A
Replace gas/electrical combo packs
Valuation:
N/A
Permit #:
BI352272
Status:
final
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
Replace gas/electrical combo packs
Valuation:
N/A
Permit #:
BI352274
Status:
final
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
Replace gas/electrical combo packs
Valuation:
N/A
Permit #:
BI352273
Status:
final
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
C/o furnace and air conditioning
Valuation:
$5,000
Permit #:
BP00000794
Status:
final
Fee:
$54
Permit Type:
N/A
Building Type:
N/A
Install furnace like for like
Valuation:
$7,500
Permit #:
M09-0131
Status:
final
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Change out furnace and addition air conditioning
Valuation:
N/A
Permit #:
BI343853
Status:
final
Fee:
$78
Permit Type:
N/A
Building Type:
N/A
Relocation of furnace and 4 air ducts - 1 return extension of heater flue
Valuation:
N/A
Permit #:
376444
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New central heating system
Valuation:
$0
Permit #:
RM9501133
Status:
Final
Fee:
$169
Permit Type:
N/A
Building Type:
N/A
Replace furnace and air conditioning
Valuation:
N/A
Permit #:
BI354510
Status:
final
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
Replace furnace and air conditioning
Valuation:
N/A
Permit #:
BI354515
Status:
final
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
Replace furnace and air conditioning
Valuation:
N/A
Permit #:
BI354514
Status:
final
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
Replace furnace and air conditioning
Valuation:
N/A
Permit #:
BI354513
Status:
final
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
Replace furnace and air conditioning
Valuation:
N/A
Permit #:
BI354511
Status:
final
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Hammer's Heating & Air Conditioning License info
Verified License
| License # | 672344 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Hammer's Heating & Air Conditioning 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 | Hudson Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Wcf National Insurance Company |
27
Permits
- Building permit records show that Hammer's Heating & Air Conditioning has worked on 27 permitted projects.
Hammer's Heating & Air Conditioning Employees
MH
Michael Keith Hammer
Sole Owner