Best Construction Contractors Companies in Illinois, United States
The 89 best Construction Contractors companies in Illinois, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Great Lakes Dredge and Dock Company.
Ranked: Best Construction Contractors companies in Illinois
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Great Lakes Dredge and Dock Company Provider of dredging services for infrastructure and coastal projects | $325M | 109 mo ago | Public | Lasse Petterson CEO | 1890 | WordPressApple iCloud MailMicrosoft 365+28 | — | — |
| 2 | Improovy Provider of construction contractor services | $3M | 47 mo ago | Seed | Kyle Lindsey Co-Founder | 2019 | WebflowCalendlyjQuery+10 | — | — |
| 3 | Intelli-Force Magnetix Provider of floor replacement and installation services | $3M | 6 mo ago | Seed | Thomas Lutz CEO | 2018 | — | — | — |
| 4 | S.I. Container Builds Provider of sustainable steel frame structures for residential and commercial applications | $2M | 44 mo ago | Seed | Dan Rubin Co-Founder & CFO | 2021 | Wix eCommerceWixSentry+22 | — | — |
| 5 | A & L Environmental Provider of construction contractor services | $10K | 52 mo ago | Funding Raised | Lateshia Jackson Co-Founder | 2019 | — | 15 patents Patents concentrated in transport & manufacturing processes | — |
| 6 | 3F Construction Provider of general contractor services | — | — | Unfunded | — | 2011 | — | 19 patents On‑site volumetric concrete mixing and self‑propelled placement systems for pavement and modular block construction | 1 expansion |
| 7 | AAA Engineering Provider of commercial electrical and plumbing services | — | — | Unfunded | — | 2009 | — | — | 2 job openings · 1 internship · 2 partnerships |
| 8 | acoa ACOA specializes in construction, dental office renovation and remodelling services. | — | — | — | — | 1991 | — | — | — |
Top 5 Construction Contractors companies in Illinois
#1
Seed · St. Charles, Illinois · founded 2018$2.8Mraised▾
Provider of floor replacement and installation services
- Dec 2025Seed—
- Apr 2024Seed$1.2M
- Feb 2023Seed$1.5M
#2
Public · Oak Brook, Illinois · founded 1890$325Mraised▾
Provider of dredging services for infrastructure and coastal projects. It offers services encompassing port deepening, channel maintenance, beach restoration, reservoir capacity restoration, and barrier island development. The company utilizes a diverse fleet of dredging equipment, including hopper, mechanical, and hydraulic dredges, and support vessels. Its expertise extends to various project types, from maintaining existing waterways to creating new infrastructure. The focus is on delivering efficient and responsible solutions for clients.
- May 2017Conventional Debt$325M
#3
Seed · Chicago, Illinois · founded 2019 · 13 employees$3.4Mraised▾
Provider of construction contractor services
- Jun 2022Seed$3.4M
#4
Seed · Highland Park, Illinois · founded 2021 · 6 employees$1.7Mraised▾
Provider of sustainable steel frame structures for residential and commercial applications. It focuses on constructing eco-friendly steel frame structures for community developments, affordable housing, wellness centers, ADU (Backyard Spaces) and portable power pods. The company caters to B2B clients, including contractors, developers, non-profits, corporations, and other organizations. It prioritizes sustainability and rapid production rates, offering solutions for multi-family or single-family residences, ADU designs, rental or for-sale properties, workforce housing, wellness facilities, additional office space, and commercial applications.
- Oct 2022Seed$185K
- Apr 2022Seed$1.7M
#5
Funding Raised · Illinois · founded 2019$10Kraised▾
Provider of construction contractor services
- Jan 2022Grant (prize money)$10K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Construction Contractors coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.