Updated: May 18, 2026
Location and Projects
Address
8141 2nd St, Downey, CA, 90241
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Western Allied Construction HVAC/Mechanical Contractor
Western Allied Construction, Inc, 8141 2nd St, Downey, CA (Employees: Donald Edward Ellwanger Jr, Harold Waterman, and James Arthur Muscarella) holds a Plumbing, Warm Air Heating, Ventilating And Air Conditioning license and 5 other licenses according to the California license board.
Their BuildZoom score of 114 ranks in the top 2% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Western Allied Construction, Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Western Allied Construction, Inc Services
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Western Allied Construction, Inc Contact Information
Phone Number: (650) 326-8290
Address: 8141 2nd St, Downey, CA 90241
Western Allied Construction, Inc Downey
Quality
114
98th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Western Allied Construction, Inc has a BuildZoom score of 114, which places them above 98% of 336,931 contractors in California.
Activity
|
58 projects
|
2025 |
|
44 projects
|
2024 |
|
28 projects
|
2023 |
Our building permit records indicate that Western Allied Construction, Inc has worked on at least
130.0 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
|
27 projects
|
Commercial Renovations |
|
9 projects
|
Home Additions |
|
3 projects
|
New Constructions |
|
78 projects
|
HVAC projects |
|
32 projects
|
Mechanical projects |
Analyzing permits over the last 4 years shows that Western Allied Construction, Inc mostly works on
hvac project
and mechanical project
projects.
Pricing
|
2 projects
|
< $5k |
|
6 projects
|
$5k-$20k |
|
3 projects
|
$20k-$50k |
|
18 projects
|
$50k-$100k |
|
10 projects
|
$100k-$250k |
|
8 projects
|
$250k-$500k |
|
3 projects
|
$500k-$1mil |
The typical size of their permits is approximately $98,900. 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.
Western Allied Construction, Inc Reviews
5 out of 5 stars, based on
1
review
-
By Anita G.March 24, 2017Verified Hire
Building Permits by Western Allied Construction, Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
No update to project scope. project update is to capture rfis with clarification details for city record. original scope of project is to replace (11) existing air conditioning units on the roof of the multipurpose building. this includes safe-off removing (11) existing air conditioning units upgrading the structural supports replacing (11) new air conditioning units and tying them in... see more
Valuation:
N/A
Permit #:
BLD2025-00440-001
Status:
triage
Fee:
$172
Permit Type:
N/A
Building Type:
N/A
Replacement of (e) ventilation (outside air) fan with new outside air fan. scope includes title 24 required interlocks and control for occupied use. provide new dedicated circuit to new ventilation fan (373w) and to new
Valuation:
$50,000
Permit #:
BS2400340
Status:
issued
Fee:
N/A
Permit Type:
Repair & maintenance
Building Type:
Office
Scope of work: like for like replacement of (2) rooftop hvac units and (1) split system. -demo existing two rooftop units and condensing unit for split system on roof. -demo existing ducted indoor ahu for split system on level 1 atm room. -install new rooftop units and condensing unit for split system on roof. -install new ducted indoor ahu for split system on level 1 atm room. -repla... see more
Valuation:
$95,000
Permit #:
2024 110663 CI
Status:
issued
Fee:
$1,831
Permit Type:
Bank
Building Type:
N/A
The scope of the project will be to replace (11) existing air conditioning units on the roof of the multipurpose building. this includes safe-off removing (11) existing air conditioning units upgrading the structural supports the new air conditioning units replacing (11) new air conditioning units and tying them into the system. gas piping will be rerouted on the roof. reuse duct smok... see more
Valuation:
$200,000
Permit #:
BLD2025-00440
Status:
issued
Fee:
$5,832
Permit Type:
Heating and/or ai...
Building Type:
N/A
(e-plan) renovations to an (e) commercial building major seismic strengthening improvements to the (e) main entrance exterior (n) entry canopy facade renovation (n) lobby interior alterations (n) tenant improvement common area upgrades (n) 6th floor roofing
Valuation:
$6,250,000
Permit #:
BS2005280
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
Commercial low gen
Tenant improvement - mechanical - finishes and hvac redistribution
Valuation:
$240,000
Permit #:
BS2408026
Status:
issued
Fee:
N/A
Permit Type:
Tenant improvement
Building Type:
Office
The least intrusive and most cost-effective way according to wa is to install 2 ductless split high wall fan coil units above the lockers. 2 condensers will be located outside on a wall mounted rack with stabilizing legs. the units will most probably be samsung. as determined western allied will install the inside and outside units. rymax will handle the electrical needs. facilities w... see more
Valuation:
$75,000
Permit #:
BPA24-2371
Status:
triage
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Replace existing rooftop component of hvac equipment and riser piping for a commercial building
Valuation:
$450,000
Permit #:
BLD2024-01137
Status:
final
Fee:
$3,066
Permit Type:
Repair
Building Type:
N/A
1) remove an existing rooftop unit 2) replace with a new like for like 50-ton unit at same location
Valuation:
$215,000
Permit #:
2025 120140 CI
Status:
issued
Fee:
$1,950
Permit Type:
Office
Building Type:
N/A
T/i- replace (2) rooftop air conditioning (cooling-only) dx units like for like - 50-ton and 60-ton (elec mech)
Valuation:
$479,452
Permit #:
CB24-0329
Status:
final
Fee:
$17,041
Permit Type:
N/A
Building Type:
N/A
Addition of (1) chiller (1) ahu and (2) pumps with vfds
Valuation:
$741,869
Permit #:
BLD2025-02634
Status:
filed
Fee:
$1,967
Permit Type:
Alteration
Building Type:
N/A
Mechanical tenant improvement (non-structural) to addition private offices. no change of use. approx 2500 sqft
Valuation:
$93,750
Permit #:
BS2500864
Status:
issued
Fee:
N/A
Permit Type:
Tenant improvement
Building Type:
Office
Unit 300 - interior tenant improvement; office use. ductwork and diffusers
Valuation:
$155,000
Permit #:
BS2406293
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Commercial low gen
Remove and replace rooftop air conditioning units w/like for like capacity and in same location on the roof
Valuation:
$98,000
Permit #:
202501098011
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
31 - lending inst...
A tenant improvement to demolish interior to return to original shell. occupancy b. approx 11 755sf
Valuation:
$100,000
Permit #:
BLD2025-00127
Status:
final
Fee:
$1,105
Permit Type:
Demolition
Building Type:
N/A
Work category: 5p; - lab sinks and faucets - icemaker w drain - electric water heater with expansion tank mixing valve and circulation pump for tempered water loop - emergency eyewash showers - point-of-use sump pumps - extension of existing vac system to new csps and equipment - extension of existing co2 system to new incubators. - extending new tempered water loop to existing emerge... see more
Valuation:
N/A
Permit #:
PW20241016432
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace (2) rooftop air conditioning (cooling-only) dx units like for like - 50-ton and 60-ton
Valuation:
$479,452
Permit #:
PREBLD24-0590
Status:
approved
Fee:
$94
Permit Type:
N/A
Building Type:
N/A
Mechanical tenant improvement - replace (e) co system wit22 new carbon monoxide sensors and 61 (e) co2 sensors & associated controls in parking garage
Valuation:
$93,000
Permit #:
BS2502067
Status:
issued
Fee:
N/A
Permit Type:
Repair & maintenance
Building Type:
Parking garage
Demolish rooftop package units (rtu-1 and rtu-2) and install with like-for-like units on existing adapter curbs. demolish outdoor condensing unit (cu-1) and and indoor fan coil unit (fcu-1) of ductless mini-split heat pump and install like-for-like units
Valuation:
$99,000
Permit #:
MECC-2023-0031
Status:
complete
Fee:
$315
Permit Type:
N/A
Building Type:
N/A
Remove and replace existing (4) commercial rooftop air conditioning units and replace with (4) new commercial air conditioning rooftop units. mount new rtu1 rtu2 rtu3 and rtu4 on existing adaptor curbs
Valuation:
$98,900
Permit #:
B23-1017
Status:
final
Fee:
$828
Permit Type:
N/A
Building Type:
N/A
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Western Allied Construction, Inc License info
Verified License
| License # | 198821 |
| Status | Active |
| State | California |
| Type | Plumbing, Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Western Allied Construction, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 826782 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Plumbing, General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Western Allied Construction, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 577538 |
| Status | Inactive |
| State | California |
| Type | Boiler, Hot Water Heating And Steam Fitting, Plumbing |
| 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.
Check this license's status for Western Allied Construction, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 329904 |
| Status | Inactive |
| State | California |
| Type | 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.
Check this license's status for Western Allied Construction, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 321925 |
| Status | Inactive |
| State | California |
| Type | Insulation And Acoustical, Boiler, Hot Water Heating And Steam Fitting, Warm Air Heating, Ventilating And Air Conditioning, Plumbing, Sanitation System, Sheet Metal, Welding |
| 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.
Check this license's status for Western Allied Construction, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 312875 |
| Status | Inactive |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Plumbing |
| 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.
Check this license's status for Western Allied Construction, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
114
BuildZoom Score
Bonded
| Bonded Agent | Hudson Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
1.7K
Permits
- Building permit records show that Western Allied Construction, Inc has worked on 1706 permitted projects.
Western Allied Construction, Inc Employees
DJ
Donald Edward Ellwanger Jr
Sole Owner
HW
Harold Waterman
Rmo / Ceo / Pres
JM
James Arthur Muscarella
Officer
JM
John De Maria
Sole Owner
JC
Joseph Andrew Chin
Officer
JV
Juan Virgentorres
Officer
JV
Juan Virgentorres
Officer
LM
Leon Parmeter Matthews
Officer
MA
Mateen Ahmed Ansari
Officer
PB
Peter Stephen Bordas
Officer
RM
Robert Edward Monaghan
Rmo
ZR
Zachary John Russi
Officer
ZK
Zeev Yehuda Kiewe
Rmo / Ceo / Pres
They did very good work and in a timely manner.