Updated: May 11, 2026
Location and Projects
Address
5729 E UNION PACIFIC AVE, Commerce, CA, 90022
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Southland Energy Systems HVAC/Mechanical Contractor
Southland Energy Systems, 5729 E Union Pacific Ave, Commerce, CA (Employees: Alex Michael Sotomayor, Francisco Melendez, and Ivan Yescas Meza) holds a Warm Air Heating, Ventilating And Air Conditioning, General Building, Plumbing license and 2 other licenses according to the California license board.
Their BuildZoom score of 109 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 Southland Energy Systems, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Southland Energy Systems Contact Information
Phone Number: (323) 869-4503
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Address: 5729 E UNION PACIFIC AVE, Commerce, CA 90022
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Southland Energy Systems Commerce
Quality
109
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Southland Energy Systems has a BuildZoom score of 109, which places them above 95% of 336,931 contractors in California.
Activity
|
142 projects
|
2025 |
|
106 projects
|
2024 |
|
153 projects
|
2023 |
Our building permit records indicate that Southland Energy Systems has worked on at least
401.0 projects over the past 3 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
|
94 projects
|
New Constructions |
|
26 projects
|
Home Additions |
|
166 projects
|
HVAC projects |
|
137 projects
|
Mechanical projects |
Analyzing permits over the last 4 years shows that Southland Energy Systems mostly works on
hvac project
and mechanical project
projects.
Pricing
|
19 projects
|
< $5k |
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 Southland Energy Systems
This is a sample of this contractor's permits. Click here to access their complete permit history.
5311 katrina pl adding insulation in attic install 1 gable vent
Valuation:
N/A
Permit #:
BP25-00102
Status:
final
Fee:
$218
Permit Type:
Storage only with...
Building Type:
N/A
37216 halfmoon dr | attic has r-30 fiberglass batts existing. adding r-19 5 inches of cellulose insulation over existing insulation. will finish at r-49. attic is 1335 sqft it has 6.44 sqft nfva existing. home requies 9.03 sqft nfva. adding 3 dormer vent for an additional 3.09 sqft nfva for a total 9.53 sqft nfva
Valuation:
N/A
Permit #:
BP25-00096
Status:
issued
Fee:
$273
Permit Type:
Storage only with...
Building Type:
N/A
1326 east avenue q-2 | attic has r-14 existing. adding r-35 9.5 inches of cellulose insulation over existing insulation. will finish at r-49 attic is 886 sqft it has 2.2sqft nfva existing. home requires 5.9 sqft nfva. will install 4 dormier vents for addition
Valuation:
N/A
Permit #:
BP25-00053
Status:
final
Fee:
$273
Permit Type:
Storage only with...
Building Type:
N/A
37959 lasker ave | adding on r-31 8.5 inches of cellulose insulation over existing insulation and will finish at a r49 attic at 1012 sf attic 3-4 sf nfva existing home requirement 7.41 sf nfva will install 4 dormer vents adding 4.12 sf nfva 1195 value
Valuation:
N/A
Permit #:
BP25-00051
Status:
final
Fee:
$273
Permit Type:
Storage only with...
Building Type:
N/A
2924 east avenue r-7 | attic has r-20 existing adding r-29 7.9 9 inches of cellulose insulation over existing insulation will finish at r-49 attic 520sf approximately will be using 25 bags of cellulose insulation and 20 fiber glass batts
Valuation:
N/A
Permit #:
BP25-00094
Status:
final
Fee:
$230
Permit Type:
Storage only with...
Building Type:
N/A
Attic has (e) r-19 fiberglass batt insulation. adding r-30 8 inches of cellulose over (e) insulation an will finish at r-49. 937 sf. will install (4) dormer vents
Valuation:
N/A
Permit #:
BP24-00203
Status:
issued
Fee:
$273
Permit Type:
Storage only with...
Building Type:
N/A
38351 maureen st addition insulation to attic
Valuation:
N/A
Permit #:
BP24-00165
Status:
final
Fee:
$260
Permit Type:
Storage only with...
Building Type:
N/A
Attic has r-22 cellulose insulation existing. addition r-27 7.5 of cellulose insulation over existing and install (2) gable and (3) domier vent. 1487 sf
Valuation:
N/A
Permit #:
BP24-00152
Status:
expired
Fee:
$125
Permit Type:
Window and door i...
Building Type:
N/A
Attic has r12 fg batt insulation existing. adding r-37 10 inches of cellulose insulation. will finish at r-49. attic is 1140 sf it has 3.0 sf nfva home requires 7.6 sf nfva. will install (2) gable & dormier vent for the needed 4.6 sf nfva
Valuation:
N/A
Permit #:
BP24-00150
Status:
expired
Fee:
$125
Permit Type:
Window and door i...
Building Type:
N/A
Adding r-36-95 inches of cellulose insulation over existing insulation. the attic wil finish at a total of r-49. attic ventallation required 6.07 sq ft nfva 4.6 sf existing ventalation.47 sf ventalation needed will install 2 dormier vents for 2.06 sf additional nfva attic ventallation
Valuation:
N/A
Permit #:
BP24-00137
Status:
expired
Fee:
$119
Permit Type:
Window and door i...
Building Type:
N/A
Attic has r-19 cellulose insulation existing adding r-30 9 inches of cellulose insulation over existing insulation. attic will finish at a total of r-49 attic is 1825 sq ft attic ventilation requires 12-16 sq ft nfva 6-72 sq ft existing ventilation. 5.45 sq ft ventilation needed. will install 4 gable vents 12"x24 for 6 sq ft additional nfva attic ventilation
Valuation:
N/A
Permit #:
BP24-00087
Status:
final
Fee:
$273
Permit Type:
Storage only with...
Building Type:
N/A
38714 frontier addition insulation in attic 1004 sf addition 3 dormer vents for single family residence
Valuation:
N/A
Permit #:
BP25-00097
Status:
issued
Fee:
$273
Permit Type:
Storage only with...
Building Type:
N/A
Water heater changeout: 40 gallons installed in same location as existing in laundry room
Valuation:
N/A
Permit #:
B25-001116
Status:
final
Fee:
$194
Permit Type:
N/A
Building Type:
N/A
Furnance changeout: 35k btus installed in same location as exisiting in living room
Valuation:
N/A
Permit #:
B25-000136
Status:
final
Fee:
$190
Permit Type:
N/A
Building Type:
N/A
Furnance changeout: 35k btus installed in same location as exisiting in hall
Valuation:
N/A
Permit #:
B25-000135
Status:
final
Fee:
$190
Permit Type:
N/A
Building Type:
N/A
Permit for direct change out of 35 000 btu single wall furnace like for like
Valuation:
N/A
Permit #:
MECH-25-00034
Status:
complete
Fee:
$117
Permit Type:
N/A
Building Type:
N/A
Change out 40 gal water heater like for like inside garage. (4 bed 2 bath)
Valuation:
N/A
Permit #:
B202500091
Status:
final
Fee:
$174
Permit Type:
N/A
Building Type:
N/A
Furnace changeout: 50k btus installed in same location like for like
Valuation:
N/A
Permit #:
B25-001117
Status:
final
Fee:
$190
Permit Type:
N/A
Building Type:
N/A
Water heater changeout like for like same location in outside closet
Valuation:
N/A
Permit #:
BLD-25-00065
Status:
final
Fee:
$180
Permit Type:
N/A
Building Type:
N/A
Permit to addition 1 260 sf of r-30 cellulose insullation in the attic
Valuation:
N/A
Permit #:
BLD-25-00462
Status:
complete
Fee:
$173
Permit Type:
N/A
Building Type:
N/A
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Southland Energy Systems Reviews
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Verified License
BuildZoom confirmed this contractor's license
Southland Energy Systems License info
Verified License
| License # | 622969 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, General Building, Plumbing |
| Business Type | Corporation |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Southland Energy Systems at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| City | Fontana |
| Type | Contractor |
| Business Type | Corporation |
- When BuildZoom last verified this license, it had an expiration date of July, 2017. Check the current license status of Southland Energy Systems with the The City of Fontana, CA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 705478 |
| Status | Inactive |
| State | California |
| Type | General Building, Plumbing, 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 Southland Energy Systems at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
109
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Everest National Insurance Company |
17.1K
Permits
- Building permit records show that Southland Energy Systems has worked on 17077 permitted projects.
Southland Energy Systems Employees
AS
Alex Michael Sotomayor
Ceo / President
FM
Francisco Melendez
Rme
IM
Ivan Yescas Meza
Rme
LR
Louis Esquivel Reta
Rme
MG
Manuel Gonzalez
Rme
MG
Manuel Gonzalez
Rme
MR
Mario Antonio Ramirez
Rme
RJ
Robert Lagunas Jr
Ceo / President
RJ
Robert Lagunas Jr
Officer
WG
William Gonzalez
Rme
WG
William Gonzalez
Rmo