Updated: Jun 24, 2026
Location and Projects
Address
Portland, OR, 97205
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Alliant Systems Construction
Serving commercial and institutional clients across Portland, Alliant Systems LLC specializes in mechanical contracting with an emphasis on HVAC, plumbing, and controls solutions. The company provides services including design-build, project management, and system installation for facilities such as hospitals, schools, and office buildings. Alliant Systems operates with an experienced team of engineers and technicians focused on delivering turnkey mechanical systems, from infrastructure upgrades to new construction. Their portfolio features complex HVAC and plumbing projects that integrate automated building controls, aligning with sustainable building practices. With 24 years in the industry, Alliant draws on extensive local knowledge to deliver mechanical solutions tailored for the Pacific Northwest’s climate and regulatory environment.
Alliant Systems LLC Services
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Alliant Systems LLC Contact Information
Phone Number: (503) 619-4000
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Alliant Systems LLC Portland
Quality
113
97th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Alliant Systems LLC has a BuildZoom score of 113, which places them above 97% of 62,733 contractors in Oregon.
Activity
|
2 projects
|
2026 |
|
67 projects
|
2025 |
|
62 projects
|
2024 |
|
59 projects
|
2023 |
Our building permit records indicate that Alliant Systems LLC has worked on at least
190.0 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
|
60 projects
|
Home Additions |
|
32 projects
|
Commercial Renovations |
|
7 projects
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that Alliant Systems LLC mostly works on
home addition
and commercial renovation
projects.
Pricing
|
9 projects
|
< $5k |
|
12 projects
|
$5k-$20k |
|
5 projects
|
$20k-$50k |
|
9 projects
|
$50k-$100k |
|
13 projects
|
$100k-$250k |
|
9 projects
|
$250k-$500k |
|
6 projects
|
$500k-$1mil |
|
20 projects
|
$1mil+ |
The typical size of their permits is approximately $199,994. 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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replace (2) 200-ton chillers that are like for like with the existing. re-pipe repair insulation replace panels and drift eliminators for both cooling towers and commissioning
Valuation:
$475,000
Permit #:
811-25-000293-MECH
Status:
issued
Fee:
$4,696
Permit Type:
Replacement
Building Type:
N/A
Osu radiation center exhaust system replacement: replacing the exhaust system for the reactor for a like for like system in the radiation center. per osu letter: osu to pay fees wrn 2583-25c alliant systems llc license no. : 153420 expiration date: 11/8/2026
Valuation:
$168,000
Permit #:
MEC25-00466
Status:
issued
Fee:
$3,474
Permit Type:
Commercial
Building Type:
N/A
*eplans* this project is a renovation and addition to the existing oregon army national guard armory in corvallis. the renovation will include seismic upgrades new window and storefront systems to meet current energy code and replacement/repairs of interior finishes to accommodate relocation of existing functions to the new addition and lighting. the new addition will addition 5 000 s... see more
Valuation:
$499,215
Permit #:
MEC24-00788
Status:
complete
Fee:
$9,378
Permit Type:
Commercial
Building Type:
N/A
Singlepdf - remove and replace (2) air handlers: disconnect/reconnect ductwork and heating water piping: furnish and install chilled water piping from existing main to air handler locations; furnish and install new heating water and chilled water pumps
Valuation:
N/A
Permit #:
2025-038905-000-00-MT
Status:
filed
Fee:
N/A
Permit Type:
Addition/alterati...
Building Type:
N/A
*eplans* the project consists of the tenant improvement of an existing approximately 1 592 sf tenant space for a bank use. with the exception of the addition of an exterior itm and the associated required ada access for the proposed itm the existing site building and tenant area remains unchanged. the group b occupancy classification also remains unchanged. the proposed tenant improve... see more
Valuation:
N/A
Permit #:
PLM24-00759
Status:
complete
Fee:
$168
Permit Type:
Commercial
Building Type:
N/A
Tenant improvement for new amenities space on level 4. new break room sink faucet and undercounter water heater. (1) new bottle filler (2) new water closets (2) new lavatories and (2) new floor drains for single user restrooms. (2) water closets (4) lavatories with faucet/soap dispenser and (4) showers for mens/womens locker rooms (1) water heater and expansion tank to serve the new l... see more
Valuation:
N/A
Permit #:
2025-006867-000-00-PT
Status:
complete
Fee:
N/A
Permit Type:
Addition/alterati...
Building Type:
N/A
Install 30 x30 supply duct from mau to the paint booth. install 36 exhaust ductwork and route through the roof penetration at 6 above the finished roof. ensuring exhaust & intake are a minimum 10 apart. install 75 ft 1 1/4 gas piping
Valuation:
$24,325
Permit #:
921-25-000149-MECH
Status:
final
Fee:
$561
Permit Type:
New
Building Type:
N/A
Public safety fac - hvac system that will serve multiple floors per plan. includes an remote terminal unit doas units split system heat pumps exhaust fans relief hoods unit heaters and a full vrf/vrv system
Valuation:
$1,615,142
Permit #:
711-24-000235-MECH-01
Status:
issued
Fee:
$13,791
Permit Type:
New
Building Type:
N/A
This project is for the construction of officers quarters approximately 16, 640 square feet. the building is intended for short terms use (<30 days) and will contain thirty-nine single occupancy rooms. the building will include a common area and kitchenette for the use of the residents
Valuation:
$593,021
Permit #:
879-23-001770-MECH-01
Status:
issued
Fee:
$247
Permit Type:
New
Building Type:
N/A
This project is for the construction of rti barracks approximately 16, 638 square feet. the building is intended for short term student use (<30 days) and will contain thirty-nine double occupancy rooms. the building will also include a common area and kitchenette for the use of the residents
Valuation:
$593,021
Permit #:
879-23-001769-MECH-01
Status:
issued
Fee:
$247
Permit Type:
New
Building Type:
N/A
Single pdf process mac exterior pergola level 3 ti; minor demolish install metal pergola w concrete pedestals deck waterproofing downspouts electrical and plumbing. route waste line into grease interceptor
Valuation:
N/A
Permit #:
2025-030417-000-00-FA
Status:
complete
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
**structural support and seismic restraint are deferred** hvav install for new office tenant improvement. new vrv system new rooftop heat pumps new exhaust fans new louvers new grilles ductwork piping and wall heaters
Valuation:
$1,687,863
Permit #:
MECHC-24-01636
Status:
complete
Fee:
$28,622
Permit Type:
N/A
Building Type:
N/A
From i-84 take exist 17 and turn north onto cedar st continue to guard shack; installing (1) electric unit heater for freeze protection in a pre-fabricated structure. prefabricated structure comes equipped with an exhaust fan and louver
Valuation:
$19,461
Permit #:
879-25-001589-MECH
Status:
issued
Fee:
$89
Permit Type:
New
Building Type:
N/A
Single family residence - (4) water svc - installing new 400ft 2 pex water service line to feed the house and fire sprinkler system. additionally we are installing a 1 1/2 pressure reducing valve. note: western fire is installing backflow device for the fire system branch line
Valuation:
N/A
Permit #:
PLMB-2513433
Status:
final
Fee:
$475
Permit Type:
N/A
Building Type:
N/A
Single family residence - (4) water svc - installing new 400ft 2 pex water service line to feed the house and fire sprinkler system. additionally we are installing a 1 1/2 pressure reducing valve. note: western fire is installing backflow device for the fire system branch line
Valuation:
N/A
Permit #:
P0305382
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Plumbing demolish scope for the salem civic seismic improvement project including demolish of existing domestic water lines fixtures and storm lines in preparation for seismic retrofit
Valuation:
N/A
Permit #:
25 110306 00 P
Status:
approved
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Sports way; low voltage hvac controls
Valuation:
$300,000
Permit #:
811-25-000570-ELEC
Status:
issued
Fee:
$133
Permit Type:
Alteration
Building Type:
N/A
Full pdox process ppmc north pavilion cancer center 9-10 flrs; install exhaust fans terminal units hot water reheat coils chilled water fan coils ductwork diffusers grilles med gas piping
Valuation:
N/A
Permit #:
2024-106465-000-00-FA
Status:
filed
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
(ti) mechanical work consists of new mechanical hvac equipment new or's pre/post op rooms support space staff space & reception/waiting. includes new controls
Valuation:
$1,170,000
Permit #:
23 103116 00 M
Status:
plancheck
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Replace roof membranes and parapet caps rooftop hvac replacement/improvements interior & exterior accessibility upgrades restroom upgrades
Valuation:
$1,355,000
Permit #:
451-24-000131-STR
Status:
final
Fee:
$10,202
Permit Type:
Repair
Building Type:
N/A
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BZ Score
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Avg Project
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BZ Score
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Avg Project
-
Projects
153
BZ Score
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Avg Project
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Projects
Alliant Systems LLC Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Alliant Systems LLC License info
Verified License
| License # | ALLIASL827KP |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Alliant Systems LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 3-487PB |
| Status | Active |
| State | Oregon |
| Type | Plumbing |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Alliant Systems LLC at the Oregon Building Codes Division.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | C1916 |
| Status | Active |
| State | Oregon |
| Type | Electrical |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Alliant Systems LLC at the Oregon Building Codes Division.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | B02-1109 |
| Status | Active |
| State | Oregon |
| Type | Boiler |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Alliant Systems LLC at the Oregon Building Codes Division.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | ALLIASL961NL |
| Status | Active |
| State | Washington |
| Type | Electrical Contractor, Electrical Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Alliant Systems LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | ALLIASL987RP |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Alliant Systems LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 153420 |
| Status | Active |
| State | Oregon |
| Business Type | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of December, 2024. Check the current license status of Alliant Systems LLC with the Oregon Construction Contractors Board (CCB)
This is a sample of licensing data; click here to access a complete history.
113
BuildZoom Score
Insured
| Insurer | Continental Casualty Company |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Guarantee Company Of North America Usa (The) |
| Bond Value | $20,000 |
Insured
| Workers Comp Provider | Saif |
704
Permits
- Building permit records show that Alliant Systems LLC has worked on 704 permitted projects.
Alliant Systems LLC Employees
CM
Chris Miller
Partner/Member
CM
Christopher Miller
Partner/Member
JH
Jerry Henderson
Partner/Member
JR
John Rozell
Partner/Member
JR
Joshua Rozell
Partner/Member
MP
Mark(Agent) Pomeroy
Partner/Member
MW
Miller, Chris W
Partner/Member
MC
Miller, Christopher
Governing Persons
RL
Rod Liedkie
Agent
RB
Rozell, John B
Partner/Member
RB
Rozell, John Barry
Owner