Updated: Jun 11, 2026
Location and Projects
Address
12300 KEELER AVE, Alsip, IL, 60803
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Mdi Access Construction
Mdi Access, 12300 Keeler Ave, Alsip, IL (Owned by: Robert Heiderscheidt) holds a General Contractor (Class D) license and 8 other licenses according to the City of Chicago license board.
Their BuildZoom score of 90 indicates that they are licensed or registered but we do not have additional information about them.
Their license was verified as active when we last checked. If you are thinking of hiring Mdi Access, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Mdi Access Services
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Mdi Access Contact Information
Phone Number: (708) 597-0110
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Address: 12300 KEELER AVE, Alsip, IL 60803
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Spr 2019 cbc: existing busines electronic data processing and storage type 1a non-combustible building. new rooftop steel platform to support building infrastructure. in addition electrical equipment shall be placed on the mezzanine level and the fourth floor shall be built to a white box finish as per plans**certified corrections subject to field inspections & audit **
Valuation:
$6,706,000
Permit #:
100888671
Status:
suspended
Fee:
$7,113
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbc: existing busines electronic data processing and storage type 1a non-combustible building. new rooftop steel platform to support building infrastructure. in addition electrical equipment shall be placed on the mezzanine level and the fourth floor shall be built to a white box finish as per plans**certified corrections subject to field inspections & audit **
Valuation:
$6,706,000
Permit #:
100888671
Status:
suspended
Fee:
$7,113
Permit Type:
N/A
Building Type:
N/A
Ten (10) 120208 22 5amp feeds from existing power unit to new starline rows
Valuation:
N/A
Permit #:
22-01090
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New 120/208 200 amp panel from existing switch board 20-20amp 120volt circuits remove and replace existing data cables
Valuation:
$40,000
Permit #:
B100743172
Status:
complete
Fee:
$375
Permit Type:
Electrical work
Building Type:
N/A
Electrical feed for temp chiller
Valuation:
$5,000
Permit #:
B100898854
Status:
complete
Fee:
$75
Permit Type:
Electrical work
Building Type:
N/A
Minor interior remodeling - equipment
Valuation:
N/A
Permit #:
22-04187
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install electrical feeds to 4 exhaust fans
Valuation:
$6,000
Permit #:
B100742708
Status:
complete
Fee:
$150
Permit Type:
Electrical work
Building Type:
N/A
Existing 8 story commercial building renovation demo(white box) for tech center mezzanine 2nd and 4th floor as per plans **certified plans corrections: conditional permit subject to field inspections **
Valuation:
$500,000
Permit #:
100876789
Status:
complete
Fee:
$10,166
Permit Type:
N/A
Building Type:
N/A
Existing 8 story commercial building renovation demo(white box) for tech center mezzanine 2nd and 4th floor as per plans **certified plans corrections: conditional permit subject to field inspections **
Valuation:
$500,000
Permit #:
100876789
Status:
complete
Fee:
$10,166
Permit Type:
N/A
Building Type:
N/A
1 (120) volt circuit
Valuation:
$1,000
Permit #:
B100792342
Status:
complete
Fee:
$150
Permit Type:
Electrical work
Building Type:
N/A
Rework existing and new feeds to 400 amp panel and starline feeds
Valuation:
$50,000
Permit #:
17-05944
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Ind and of
8 story existing business/tech center 5th floor interior renovation. no structural work
Valuation:
$300,000
Permit #:
100771701
Status:
complete
Fee:
$1,575
Permit Type:
N/A
Building Type:
N/A
1.install the conduits and feed for one new 480/208 30kva transformer. 2.install new 100amp pp-2 panel 3.1-30amp circuit 4.install new 200amp rp-2 panel 5.4-20 amp circuits 6.install eight (8) 4¿ conduits from com-ed room to new electrical room for future use. 7.install eight (8) 4¿ conduits from generator area to new electrical room for future use. 8.install electrical equipment in b... see more
Valuation:
$20,000
Permit #:
B100426957
Status:
complete
Fee:
$100
Permit Type:
Electrical work
Building Type:
N/A
8 story existing business/tech center 5th floor interior renovation. no structural work
Valuation:
$300,000
Permit #:
100771701
Status:
complete
Fee:
$1,575
Permit Type:
N/A
Building Type:
N/A
Revision to permit # 10015445-3rd floor alterations install 2 raised floor, electrical-relocate mechanical panels to new locations mechanical- relocate 22 crah's install 3 additional crah's per plans
Valuation:
$300,000
Permit #:
100298779
Status:
complete
Fee:
$9,089
Permit Type:
N/A
Building Type:
N/A
Reinstatement of permit #100415062 for 100% of the original cost + a $50 processing fee
Valuation:
$1
Permit #:
100682760
Status:
issued
Fee:
$3,785
Permit Type:
N/A
Building Type:
N/A
Electrical - the installation of two 400 amp power distribution units electrical - provide 95 (3) phas outlets low voltage - install fiber optic cable ladder racking
Valuation:
$50,000
Permit #:
B100411755
Status:
complete
Fee:
$1,500
Permit Type:
Electrical work
Building Type:
N/A
Electrical - the installation of two 400 amp power distribution units electrical - provide 95 (3) phas outlets low voltage - install fiber optic cable ladder racking
Valuation:
$50,000
Permit #:
B100412533
Status:
complete
Fee:
$1,550
Permit Type:
Electrical work
Building Type:
N/A
Interior renovations to first and sixth floors existing technology center per plans
Valuation:
$500,000
Permit #:
100508100
Status:
complete
Fee:
$1,722
Permit Type:
N/A
Building Type:
N/A
Interior alterations to provide an elevator and elevator machine room for the existing townhouse as per plans
Valuation:
$30,000
Permit #:
100875520
Status:
complete
Fee:
$550
Permit Type:
N/A
Building Type:
N/A
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Mdi Access Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Mdi Access License info
Verified License
| License # | TGC015820 |
| Status | Active |
| City | City Of Chicago |
| Type | General Contractor (Class D) |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Mdi Access at the City of Chicago Data Portal.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | ECC92222 |
| Status | Active |
| City | City Of Chicago |
| Type | Electrical Contractor (General) |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Mdi Access at the City of Chicago Data Portal.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 34TC00182900 |
| Status | Active |
| State | New Jersey |
| Type | Telecomunications Contractor (Tc,Ti,Tp) |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Mdi Access at the New Jersey Department of Law & Public Safety.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | ECC92222 |
| Status | Inactive |
| City | Evanston |
| Type | Electrical |
- According to the City of Evanston Building and Inspection Services, 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 Mdi Access at the City of Evanston Building and Inspection Services.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | ECC92222 |
| Status | Inactive |
| City | Evanston |
| Type | Electrical |
- According to the City of Evanston Building and Inspection Services, 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 Mdi Access at the City of Evanston Building and Inspection Services.
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 |
| County | Cook County |
| Type | Electrical |
- 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
| 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 |
| City | City Of Chicago |
| Type | General |
- 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.
90
BuildZoom Score
30
Permits
- Building permit records show that Mdi Access has worked on 30 permitted projects.
Mdi Access Employees
RH
Robert Heiderscheidt
Owner