Updated: Jul 07, 2026
Location and Projects
Address
3700 S IRON ST, Chicago, IL, 60609
Use our bidding system to
request a quote
Cortex Construction Group Ltd
Cortex Construction Group Ltd serves Chicago, Illinois, with a focus on residential and commercial renovation and construction projects. The company’s portfolio includes single-family home remodels, multi-unit building renovations, and commercial tenant build-outs throughout the Chicago metropolitan area. Cortex Construction Group handles a range of services such as interior renovations, kitchen and bathroom remodeling, basement finishing, and structural repairs. The team is experienced in working with both homeowners and property managers to deliver projects in neighborhoods across Chicago. Over the past five years, Cortex Construction Group has demonstrated consistent activity in the city’s construction sector, managing multiple permits and addressing the specific needs of local properties, from historic buildings to newer developments.
Cortex Construction Group Ltd Services
Start a project today:
Cortex Construction Group Ltd Contact Information
Phone Number: (773) 946-8568
Edit
Address: 3700 S IRON ST, Chicago, IL 60609
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Cortex Construction Group Ltd Chicago
Quality
108
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Cortex Construction Group Ltd has a BuildZoom score of 108, which places them above 95% of 65,686 contractors in Illinois.
Activity
|
39 projects
|
2025 |
|
19 projects
|
2024 |
|
22 projects
|
2023 |
Our building permit records indicate that Cortex Construction Group Ltd has worked on at least
80.0 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
|
7 projects
|
Home Additions |
|
4 projects
|
New Constructions |
|
3 projects
|
Fences |
|
3 projects
|
Commercial Renovations |
|
3 projects
|
Multi-room remodels |
Analyzing permits over the last 4 years shows that Cortex Construction Group Ltd mostly works on
home addition
and new construction
projects.
Pricing
|
4 projects
|
< $5k |
|
23 projects
|
$5k-$20k |
|
22 projects
|
$20k-$50k |
|
12 projects
|
$50k-$100k |
|
6 projects
|
$100k-$250k |
|
3 projects
|
$250k-$500k |
|
3 projects
|
$500k-$1mil |
|
5 projects
|
$1mil+ |
The typical size of their permits is approximately $28,958. 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 Cortex Construction Group Ltd
This is a sample of this contractor's permits. Click here to access their complete permit history.
Cbc 2019 construct a new construction 2 story type va single family residence (as built conditions) with a sprinkler system basement. work includes mep work and an attached garage on the existing foundation per original permit#101038564 va const. r5 occupancy as per architectural plans. wrecking permit number: 101062204. address also known as: 6053 n kostner ave
Valuation:
$620,000
Permit #:
101058492
Status:
issued
Fee:
$3,425
Permit Type:
N/A
Building Type:
N/A
Dds 2019 cbc: interior alterations to existing single story warehouse building for a new manufacturing warehouse and office space as per plans. (occupancy f-1 b s-2. type iib construction) consultant reviewer: v3 companies of il
Valuation:
$9,652,000
Permit #:
101062884
Status:
issued
Fee:
$33,117
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbrc: full building permit for 3 story 3 dwelling unit building with 3 on-site parking spaces and a 2-story rear wood porch (occupancy group r-5 type v-a construction)
Valuation:
$400,000
Permit #:
101071594
Status:
issued
Fee:
$4,933
Permit Type:
N/A
Building Type:
N/A
Sc 2019 cbrc: interior & exterior renovations to (5) fire damaged d.u.: 104 206 310 311 & 312 on existing 4-story building w basement incl. masonry & deck repairs; construction type iii-a occupancy group r-2
Valuation:
$650,000
Permit #:
101066349
Status:
complete
Fee:
$2,613
Permit Type:
N/A
Building Type:
N/A
Interior alterations to the 1st 2nd & 3rd floors (attic) of a 2-1/2 story brick & frame 2-unit building (1 simplex & 1 duplex). 1st floor unit to remain the same size with no addition and duplex unit on the 2nd and 3rd floors (attic) to have a rear frame addition of 282 sf total. new 3-story rear open wood porch & stairs. new 174.4 sf cmu 2-car garage. mechanical electrical & plumbing... see more
Valuation:
$90,000
Permit #:
101039099
Status:
issued
Fee:
$1,600
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbrc: interior remodeling including electrical plumbing and mechanical work to an existing 1 1/2 story frame building as single-family residence and front and rear decks with stairs to be replaced as well.also rear addition. all work to be done per plans. (construction class va occupancy r-5).9conditional permit subject to field inspections.)
Valuation:
$60,000
Permit #:
101042217
Status:
issued
Fee:
$975
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbrc - construct a partial second floor addition and convert the existing second floor office space into 5 new residential units units. work is limited to only the second floor 4 new parking spaces and 6 bicycle stalls. the 3 retail spaces are to remain on the first floor as per architectural plans to include mechanical electrical & plumbing work.**certified corrections subje... see more
Valuation:
$450,000
Permit #:
101042117
Status:
complete
Fee:
$4,194
Permit Type:
N/A
Building Type:
N/A
Sc 2019 cbc construct a 2 story brick and frame single family residence with a partial basement and an attached two car garage as per plans. r5 occupancy classification
Valuation:
$600,000
Permit #:
101072343
Status:
issued
Fee:
$4,450
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbre: interior and minor exterior alterations to existing warehouse for new tenant as per plans. (occupancy group b/s1; type ii-b construction) **certified plans corrections: conditional permit subject to field inspections**
Valuation:
$1,200,000
Permit #:
101052065
Status:
suspended
Fee:
$22,967
Permit Type:
N/A
Building Type:
N/A
In-kind replacement of exterior windows and doors in existing openings. replacement windows: 18; replacement skylights: 0; replacement doors: 0. affects: 2 residential unit(s) 1 non-residential unit(s) 1 interior common areas location: building facade
Valuation:
$13,000
Permit #:
B200426751
Status:
issued
Fee:
$700
Permit Type:
Exterior windows/...
Building Type:
N/A
Sc 2019 cbrc: construct a 2 story frame/brick addition and interior alterations to existing single family residence to include mep work as per plans. provide full automatic fire suppression system that complies to national fire prevention standards: mfp 13-94 or a more recent addition. (see new construction permit 101058492 for deviation from this permit after it was issued)
Valuation:
$250,000
Permit #:
101038564
Status:
issued
Fee:
$3,338
Permit Type:
N/A
Building Type:
N/A
Existing 1 story warehouse building with mezzanine with change of use from s-1 storage to b-business f-1 manufacturing and h-3 high hazard for the purpose of constructing administrative offices chemical manufacturing area and research laboratories along with a flammable liquid storage room and standard fireproof vault. a 4-hr separation is to be constructed for these h-3 occupancies a... see more
Valuation:
$5,000,000
Permit #:
101003914
Status:
complete
Fee:
$28,473
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbc existing 2 story warehouse building. construction type - 3b. offices 4 control areas a flammable liquid storage and standard fireproof vault will be constructed on the ground level. offices and conference rooms will be constructed on the 2nd level. the building will comply with the more stringent aspects of the chicago building code and the chicago fire prevention code as... see more
Valuation:
$2,000,000
Permit #:
100998519
Status:
suspended
Fee:
$20,316
Permit Type:
N/A
Building Type:
N/A
Dds *** phase ii - superstructure of a 64 unit masonry residential building over 21 parking spaces with an additional 14 parking spaces open to sky for a total of 35 parking spaces. work includes all sitework superstructure framing and mechanical electrical and plumbing.foundation permit reference: #100989107 consultant reviewer: v3 companies
Valuation:
$7,500,000
Permit #:
100994046
Status:
complete
Fee:
$58,452
Permit Type:
N/A
Building Type:
N/A
Self certification. interior tenant fitout for existing 2-story business occupancy in type 3b construction. the buildout will comply with the more stringent aspects of the chicago building code and the chicago fire prevention code as per plans
Valuation:
$2,000,000
Permit #:
101004540
Status:
complete
Fee:
$11,620
Permit Type:
N/A
Building Type:
N/A
Spr 2019 cbrc: interior renovation of existing 2 du's new basement du in existing 2-story + basement. masonry building. new exterior rear frame porch & new cmu 2-car garage. architetural mechanical electrical and plumbing per plans. (occupancy clasification r-5; construction type iii-a)
Valuation:
$204,480
Permit #:
101055172
Status:
issued
Fee:
$925
Permit Type:
N/A
Building Type:
N/A
Tuckpointing and unit masonry repair replacement: 150 sq. ft lintel qty. 0 max. length 0. concrete masonry repair replacemnt: 100sq. ft excavation = no. location: property entrance
Valuation:
$10,626
Permit #:
B200431158
Status:
complete
Fee:
$925
Permit Type:
Masonry work
Building Type:
N/A
Spr 2019 cbrc: interior remodeling of basement first floor second floor and third floor rebuild second and total rebuild third floors with addition and roof due to fire. up grade the two apartments. r-5 occ
Valuation:
$150,000
Permit #:
101062410
Status:
issued
Fee:
$1,193
Permit Type:
N/A
Building Type:
N/A
Dds cbc 2019:phase 1 of 2: foundation permit for proposed 5-story residential building with 64 dwelling units and 35 indoor parking spaces. type 3a construction occupancy group r2. (phase 2 full building permit #100994046) dds consultant reviewer: v3 companies of il
Valuation:
$250,000
Permit #:
100989107
Status:
complete
Fee:
$3,075
Permit Type:
N/A
Building Type:
N/A
Tuckpointing and unit masonry repair replacement: 650 sq. ft lintel qty. 0 max. length 0. location: 4th floor
Valuation:
$29,720
Permit #:
B200416561
Status:
issued
Fee:
$375
Permit Type:
Masonry work
Building Type:
N/A
Similar Contractors See more
156
BZ Score
$107K
Avg Project
-
Projects
155
BZ Score
$50K
Avg Project
-
Projects
142
BZ Score
$3.5K
Avg Project
-
Projects
Cortex Construction Group Ltd Reviews
BuildZoom hasn't received any reviews for Cortex Construction Group Ltd. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Hiring a contractor?
Verified License
BuildZoom confirmed this contractor's license
Cortex Construction Group Ltd License info
Verified License
| Status | Active |
| County | Cook County |
| Type | Masonry/Brick/Stone |
| Date Issued | 04-17-2026 |
- BuildZoom verified this license was active as of July 2026.
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| County | Cook County |
| Type | Carpentry |
| Date Issued | 04-17-2026 |
- BuildZoom verified this license was active as of July 2026.
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| County | Cook County |
| Type | Roofing |
| Date Issued | 04-17-2026 |
- BuildZoom verified this license was active as of July 2026.
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| County | Cook County |
| Type | Insulation |
| Date Issued | 02-04-2026 |
- BuildZoom verified this license was active as of July 2026.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | TGC117319 |
| 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 Cortex Construction Group Ltd at the City of Chicago Data Portal.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | MC6923 |
| Status | Active |
| City | City Of Chicago |
| Type | Mason Contractor (Class A) |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Cortex Construction Group Ltd at the City of Chicago Data Portal.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | NAT-F239533-1 |
| Status | Active |
| Nation | Environmental Protection Agency |
| Type | Renovation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Cortex Construction Group Ltd at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 23LICC-0165 |
| Status | Inactive |
| City | Evanston |
| Type | Gc Commercial |
- 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 Cortex Construction Group Ltd 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 |
| City | City Of Chicago |
| Type | Mason Contractor |
- 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 | D $2,000,000 Project Ceiling |
- 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 | D $2,000,000 Project Ceiling |
- 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.
108
BuildZoom Score
85
Permits
- Building permit records show that Cortex Construction Group Ltd has worked on 85 permitted projects.
Cortex Construction Group Ltd Employees
DA
Daniel Adan
Owner