Updated: Mar 19, 2026
Location and Projects
Address
11904 WOODRUFF AVENUE, Downey, CA, 90241
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Gamma Plumbing & Heating & Air Conditioning
Gamma Plumbing & Heating & Air Conditioning, 11904 Woodruff Ave, Downey, CA (Owned by: Roberto Gutierrez Gamma) holds a Warm Air Heating, Ventilating And Air Conditioning, Plumbing, Electrical, General Building license according to the California license board.
Their BuildZoom score of 104 ranks in the top 9% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Gamma Plumbing & Heating & Air Conditioning, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Gamma Plumbing & Heating & Air Conditioning Services
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Gamma Plumbing & Heating & Air Conditioning Contact Information
Phone Number: (562) 869-9472
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Address: 11904 WOODRUFF AVENUE, Downey, CA 90241
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Gamma Plumbing & Heating & Air Conditioning Downey
Quality
104
91st percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Gamma Plumbing & Heating & Air Conditioning has a BuildZoom score of 104, which places them above 91% of 336,931 contractors in California.
Activity
|
7 projects
|
2025 |
|
1 project
|
2024 |
Our building permit records indicate that Gamma Plumbing & Heating & Air Conditioning has worked on at least
8.0 projects over the past 2 years.
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.
Experience
|
8 projects
|
Mechanical projects |
|
5 projects
|
HVAC projects |
Analyzing permits over the last 4 years shows that Gamma Plumbing & Heating & Air Conditioning mostly works on
mechanical project
and hvac project
projects.
Pricing
|
4 projects
|
$5k-$20k |
|
3 projects
|
$20k-$50k |
The typical size of their permits is approximately $10,106. This graph shows the distribution of these job values.
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.
Building Permits by Gamma Plumbing & Heating & Air Conditioning
This is a sample of this contractor's permits. Click here to access their complete permit history.
Residential mechanical electrical plumbing - mechanical permit
2025-09-25
Mini split and air handler
Valuation:
$20,211
Permit #:
RMEP2025-00105
Status:
final
Fee:
$745
Permit Type:
N/A
Building Type:
N/A
Residential mechanical electrical plumbing - mechanical permit
2025-05-29
Replace tankless water heater
Valuation:
$5,053
Permit #:
RMEP2025-00048
Status:
issued
Fee:
$305
Permit Type:
N/A
Building Type:
N/A
Residential mechanical electrical plumbing - mechanical permit
2025-05-28
Mini split w air handler
Valuation:
$20,211
Permit #:
RMEP2025-00035
Status:
final
Fee:
$745
Permit Type:
N/A
Building Type:
N/A
Residential mechanical electrical plumbing - mechanical permit
2025-06-11
Furnace replacement
Valuation:
$10,106
Permit #:
RMEP2025-00122
Status:
issued
Fee:
$355
Permit Type:
N/A
Building Type:
N/A
Residential mechanical electrical plumbing - mechanical permit
2025-07-02
Replace gas furnace and air conditioner
Valuation:
$20,211
Permit #:
RMEP2025-00118
Status:
final
Fee:
$782
Permit Type:
N/A
Building Type:
N/A
Residential mechanical electrical plumbing - mechanical permit
2025-09-02
Replace 36k heat pump 3 wall units in same location
Valuation:
$10,106
Permit #:
RMEP2025-00153
Status:
issued
Fee:
$355
Permit Type:
N/A
Building Type:
N/A
Residential mechanical electrical plumbing - mechanical permit
2024-12-24
Tankless water heater
Valuation:
$5,053
Permit #:
RMEP2024-00214
Status:
filed
Fee:
$305
Permit Type:
N/A
Building Type:
N/A
Repairing furnace and addition air conditioning
Valuation:
N/A
Permit #:
19044-10000-02659
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit14042-10000-22658 to collect fees for (1 ) additional inspection. this permit does not authorize any additional work or extend the expiration date of the original permit
Valuation:
N/A
Permit #:
14042-10002-22658
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental permit to collect fees for (1) additional inspection. this permit does not authorize any additional work or extend the expiration date of the original permit
Valuation:
N/A
Permit #:
14042-10001-22658
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Installation of sewage ejector for single family dwelling.
Valuation:
N/A
Permit #:
14042-10000-24946
Status:
Ready to Issue
Fee:
N/A
Permit Type:
1 or 2 Family Dwe...
Building Type:
N/A
Plumbing drains and hot and cold water
Valuation:
N/A
Permit #:
14042-10000-22658
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Replacing heating & air conditioning system
Valuation:
N/A
Permit #:
12044-40000-14720
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Correct vio @ det garage per ps#16-7961
Valuation:
N/A
Permit #:
016-002-540
Status:
issued
Fee:
$73
Permit Type:
N/A
Building Type:
N/A
Install new tankless water heater and dishwasher
Valuation:
N/A
Permit #:
11042-70000-09825
Status:
expired
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition condenser to existing set furnace and coil existing
Valuation:
N/A
Permit #:
19044-40000-06705
Status:
applied
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Upgrade service to 200 amp
Valuation:
N/A
Permit #:
11041-20000-04459
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Comm'l electrical permit- 100 amp sub-panel 1 light 4 outlets 1 outlet for future fountain
Valuation:
N/A
Permit #:
ELE07-00155
Status:
final
Fee:
$97
Permit Type:
N/A
Building Type:
N/A
Install air conditioning and heating
Valuation:
N/A
Permit #:
03044-10000-01992
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Remove furnace and replace with heat pump system
Valuation:
N/A
Permit #:
012-002-498
Status:
issued
Fee:
$455
Permit Type:
N/A
Building Type:
N/A
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Gamma Plumbing & Heating & Air Conditioning Reviews
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Verified License
BuildZoom confirmed this contractor's license
Gamma Plumbing & Heating & Air Conditioning License info
Verified License
| License # | 546523 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Plumbing, Electrical, General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Gamma Plumbing & Heating & Air Conditioning at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
104
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Norguard Insurance Company |
32
Permits
- Building permit records show that Gamma Plumbing & Heating & Air Conditioning has worked on 32 permitted projects.
Gamma Plumbing & Heating & Air Conditioning Employees
RG
Roberto Gutierrez Gamma
Owner