Updated: Jul 07, 2026
Location and Projects
Address
535 EXCHANGE COURT, Aurora, IL, 60504
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State Mechanical Services
State Mechanical Services, 535 Exchange Ct, Aurora, IL (Owned by: Andrew Yonkus) holds a General Contractor (Class A) license and 21 other licenses according to the City of Chicago license board.
Their BuildZoom score of 109 ranks in the top 5% of 65,686 Illinois licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring State Mechanical Services, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
State Mechanical Services Contact Information
Phone Number: (630) 401-3818
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Address: 535 EXCHANGE COURT, Aurora, IL 60504
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State Mechanical Services Aurora
Quality
109
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
State Mechanical Services has a BuildZoom score of 109, which places them above 95% of 65,686 contractors in Illinois.
Activity
|
22 projects
|
2025 |
|
15 projects
|
2024 |
|
33 projects
|
2023 |
Our building permit records indicate that State Mechanical Services has worked on at least
70.0 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
|
18 projects
|
Commercial Renovations |
|
3 projects
|
Home Additions |
|
13 projects
|
HVAC projects |
|
6 projects
|
Mechanical projects |
Analyzing permits over the last 4 years shows that State Mechanical Services mostly works on
commercial renovation
and hvac project
projects.
Pricing
|
3 projects
|
< $5k |
|
5 projects
|
$20k-$50k |
|
4 projects
|
$50k-$100k |
|
8 projects
|
$100k-$250k |
|
11 projects
|
$250k-$500k |
|
11 projects
|
$500k-$1mil |
|
20 projects
|
$1mil+ |
The typical size of their permits is approximately $580,000. 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 State Mechanical Services
This is a sample of this contractor's permits. Click here to access their complete permit history.
Construct common corridor tenant demising walls and renovate bathrooms 2 760 sf on 21st floor of fully sprinklered 23 story hi-rise building construction type: type 1a; occupancy : b business no change; no structural work ; no new telecommunication rooms in the project scope. self-cert project
Valuation:
$400,000
Permit #:
101068311
Status:
issued
Fee:
$1,193
Permit Type:
N/A
Building Type:
N/A
Self-cert 2019 cbrc: interior building out of in existing office building on the 18th floor suite 1825. new partitions electrical ventilation & plumbing work as per plans. (occupancy group b; type 1a construction)
Valuation:
$1,850,000
Permit #:
101066256
Status:
complete
Fee:
$4,076
Permit Type:
N/A
Building Type:
N/A
Self-cert 2019 cbrc. interior alteration of an existing office space on floors 3-7 of an existing 20 story commercial building. no change in use no change in occupancy. (occupancy group b; type ia construction)
Valuation:
$2,816,625
Permit #:
101068676
Status:
issued
Fee:
$34,867
Permit Type:
N/A
Building Type:
N/A
Self-cert 2019 cbc: initial buildout of medical offices for outpatiant behavioral health facility in existing building on the 5th floor suite 510. new construction of partitions ceilings lighting finishes millwork and associated mechanical electrical and plumbing work as per plans. (occupancy group b; type 1a construction)
Valuation:
$1,500,000
Permit #:
101072876
Status:
issued
Fee:
$4,818
Permit Type:
N/A
Building Type:
N/A
Self-cert 2019 cbrc: interior alterations to include partial demolish of existing locker area for new single user restrooms with new plumbing fixtures plumbing connections and finishes. demolish of existing cafe millwork to be replaced with new custom millwork. new act ceiling tiles and new linear light fixtures in cafe.renovation of existing accessory storage room to accessory confer... see more
Valuation:
$800,000
Permit #:
101072436
Status:
issued
Fee:
$1,865
Permit Type:
N/A
Building Type:
N/A
Self-cert 2019 cbrc: interior alterations in existing office building on the 24th floor existing office suite 2425. new partitions doors ceilings millwork finishes and associated electrical ventilation & plumbing work as per plans. (occupancy group b; type 1a construction)
Valuation:
$1,080,000
Permit #:
101070206
Status:
complete
Fee:
$1,057
Permit Type:
N/A
Building Type:
N/A
Self cert 2019 cbrc: interior 3rd floor demolition of non-load bearing partions as per plans. work to include electrical fire protection mechanical and plumbing. no structural work. no change in use. (construction type: 1a; occupancy: b-business office)
Valuation:
$391,702
Permit #:
101070757
Status:
issued
Fee:
$3,328
Permit Type:
N/A
Building Type:
N/A
Cps school - no change in use. interior alteration of two existing classrooms into four classrooms. modify existing electrical and mechanical to allow for new layout. all work in the annex building only
Valuation:
$300,000
Permit #:
101066499
Status:
issued
Fee:
$1,258
Permit Type:
N/A
Building Type:
N/A
Self-cert 2019 cbrc interior alteration on the 24th floor of an existing 28 floor high-rise commercial office space ; no change in use ; no change in occupancy (occupancy group: b construction type: ia)
Valuation:
$568,890
Permit #:
101068160
Status:
issued
Fee:
$7,258
Permit Type:
N/A
Building Type:
N/A
Repair/replacement affecting 1 systems : 1 make up air unit(captiveaire cas-hvac4-i.1100 roof top). electrical work under this permit = no. locations: 0 residential unit(s) 0 non-residential unit(s) 1 interior common areas exterior work roof top
Valuation:
$260,000
Permit #:
B200432070
Status:
issued
Fee:
$100
Permit Type:
Mechanical work
Building Type:
N/A
(self-cert 2019 cbrc) interior & exterior alterations to existing 4-story transitional shelter to include installation of new elevator and associated site work as per plans. (occupancy group: r-1 type iii-a construction)
Valuation:
$2,030,000
Permit #:
101059919
Status:
issued
Fee:
$3,219
Permit Type:
N/A
Building Type:
N/A
Direct developer services - erect 19 story 287 du residential building. foundation permit under #100970211. consultant reviewer: globetrotters engineering
Valuation:
$1
Permit #:
100982183
Status:
issued
Fee:
$327,073
Permit Type:
N/A
Building Type:
N/A
Direct developer services - erect 19 story 287 du residential building. foundation permit under #100970211. consultant reviewer: globetrotters engineering
Valuation:
$1
Permit #:
100982183
Status:
issued
Fee:
$327,073
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbrc: revision to permit #101046534: interior renovation to shift auditorium east and revise previous auditorium location to office space and collaboration space on the 35th floor of an existing high rise mixed use building type ia construction. renovate existing and future tenant space to offices and collaboration spaces. the project will now lease the full floor
Valuation:
$2,000,000
Permit #:
101056189
Status:
complete
Fee:
$7,400
Permit Type:
N/A
Building Type:
N/A
2019 cbc: direct developer services: structural & foundation only review for interior renovation and rooftop addition to the existing 3-story building. upgrading the existing building from type iii-b to ii-a construction as per plans. consultant reviwer:v3 companies of il
Valuation:
$14,500,000
Permit #:
101044215
Status:
issued
Fee:
$21,233
Permit Type:
N/A
Building Type:
N/A
Self-cert 2019 cbrc: replacement of the roof top mechanical air handlers and exhaust fans. modificaitons to existing roof and existing mechanical unit screening as per plans. (occupancy groujp e-1; type 1-b construction) (structural peer review report)
Valuation:
$700,000
Permit #:
101053068
Status:
suspended
Fee:
$5,024
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbrc: interior renovations to existing business use to accommodate new auditorium auditorium lobby office and collaboration spaces on the 35th floor of an existing high rise mixed use building of type ia construction. acar included for number of required plumbing fixtures
Valuation:
$3,615,685
Permit #:
101046534
Status:
complete
Fee:
$16,125
Permit Type:
N/A
Building Type:
N/A
***direct developer services*** renovation of an existing 4-story school third floor restrooms plus a fourth floor addition on the western portion of the building as well as an addition of a mezzanine viewing level at existing gynmasium. all as per plans. consultant reviewer: v3 companies of il
Valuation:
$3,000,000
Permit #:
101046702
Status:
complete
Fee:
$8,730
Permit Type:
N/A
Building Type:
N/A
Self-cert 2019 cbrc. revision to permit 101026527 to include addition of perimeter drywall on floors 4-20 and 21-29 to finish columns sills headers above windows. shaft wall added to enclose a floor opening within core of floors 24-29. (occupancy group b s u; type ia construction)
Valuation:
$1,200,000
Permit #:
101046611
Status:
complete
Fee:
$30,852
Permit Type:
N/A
Building Type:
N/A
Dds 2019 cbrc. alteration of 2 basement levels and interior/exterior landmark scope on ground level in existing landmarked 31 story office building. new restaurant on ground floor with bathrooms. conversion of rooftop mechanical floor to amenity floor on level 31 involving new enclosure system/vrf system. addition of rooftop enclosure and amenity deck on level 32 for second floor of a... see more
Valuation:
$3,000,000
Permit #:
101033518
Status:
complete
Fee:
$123,830
Permit Type:
N/A
Building Type:
N/A
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State Mechanical Services Reviews
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Verified License
BuildZoom confirmed this contractor's license
State Mechanical Services License info
Verified License
| License # | TGC088644 |
| Status | Active |
| City | City Of Chicago |
| Type | General Contractor (Class A) |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for State Mechanical Services at the City of Chicago Data Portal.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 22LICH-0036 |
| Status | Active |
| City | Evanston |
| Type | Hvac |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for State Mechanical Services at the City of Evanston Building and Inspection Services.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 201703841 |
| Status | Active |
| City | Oak Park |
| Type | Contractor |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for State Mechanical Services at the Village of Oak Park.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | CGC1524041 |
| Status | Active |
| State | Florida |
| Type | Certified General Contractor |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for State Mechanical Services at the Florida Department of Business & Professional Regulation.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | MEC1201352 |
| Status | Active |
| City | University City |
| Type | Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of July, 2023. Check the current license status of State Mechanical Services with the City of University City
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| Town | Palatine |
| Type | Hvac |
- When BuildZoom last verified this license, it had an expiration date of December, 2021. Check the current license status of State Mechanical Services with the Village of Palatine Registered Contractors
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | CL-18-17129 S |
| Status | Active |
| Town | Orland Park |
| Type | Hvac/Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2018. Check the current license status of State Mechanical Services with the Village of Orland Park Contractor License
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | CL-16-17129 |
| Status | Active |
| Town | Orland Park |
| Type | Heating Vent & A/C Contractor |
- When BuildZoom last verified this license, it had an expiration date of June, 2016. Check the current license status of State Mechanical Services with the Village of Orland Park Contractor License
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 15-00014029 |
| Status | Active |
| City | Aurora |
| Type | Heating Contractor |
- When BuildZoom last verified this license, it had an expiration date of June, 2016. Check the current license status of State Mechanical Services with the The City of Aurora, IL
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CR5660 |
| Status | Inactive |
| County | Dupage County |
| Type | Hvac |
- According to the County of Dupage Contractor Registration Information, 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 State Mechanical Services at the County of Dupage Contractor Registration Information.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CR5660 |
| Status | Inactive |
| County | Dupage County |
| Type | Mechanical Piping |
- According to the County of Dupage Contractor Registration Information, 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 State Mechanical Services at the County of Dupage Contractor Registration Information.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CL-24-17129 |
| Status | Inactive |
| Town | Orland Park |
| Type | Hvac/Mechanical Contractor |
- According to the Village of Orland Park Contractor License, 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 State Mechanical Services at the Village of Orland Park Contractor License.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CL-2822 |
| Status | Inactive |
| Town | Bartlett |
| Type | {U'license Type': U'heating/Air Conditioning'} |
- According to the Contractors Licensed in Bartlett, 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 State Mechanical Services at the Contractors Licensed in Bartlett.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CR5660 |
| Status | Inactive |
| County | Dupage County |
| Type | Sub Contractor, Hvac, Mechanical Piping |
- According to the County of Dupage Contractor Registration Information, 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 State Mechanical Services at the County of Dupage Contractor Registration Information.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | Cook County |
| Type | Hvac |
- According to the Cook County Department of Building and Zoning, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CL-20-17129 |
| Status | Inactive |
| Town | Orland Park |
| Type | Hvac/Mechanical Contractor |
- According to the Village of Orland Park Contractor License, 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 State Mechanical Services at the Village of Orland Park Contractor License.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CL-19-17129 |
| Status | Inactive |
| Town | Orland Park |
| Type | Hvac/Mechanical Contractor |
- According to the Village of Orland Park Contractor License, 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 State Mechanical Services at the Village of Orland Park Contractor License.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CL-18-17129 |
| Status | Inactive |
| Town | Orland Park |
| Type | Hvac/Mechanical Contractor |
- According to the Village of Orland Park Contractor License, 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 State Mechanical Services at the Village of Orland Park Contractor License.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | City Of Chicago |
| Type | A All Projects No Restrictions |
- According to the City of Chicago Data Portal, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| State | Florida |
| Type | Construction Business Information |
- According to the Florida Department of Business & Professional Regulation, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | Cook County |
| Type | Hvac |
- According to the Cook County Department of Building and Zoning, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CL-17-17129 |
| Status | Inactive |
| Town | Orland Park |
| Type | Hvac/Mechanical Contractor |
- According to the Village of Orland Park Contractor License, 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 State Mechanical Services at the Village of Orland Park Contractor License.
This is a sample of licensing data; click here to access a complete history.
109
BuildZoom Score
577
Permits
- Building permit records show that State Mechanical Services has worked on 577 permitted projects.
State Mechanical Services Employees
AY
Andrew Yonkus
Owner
AA
Ann Allen
Owner
MS
Mark J Seikel
Owner
RJ
Robinson, Jon Jay