Top-rated structural engineers.

Best structural engineers near Union, IL

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Top-Rated Structural engineers in Union - Updated Nov 2026

Avatar for Great Lakes Builders Inc
Great Lakes Builders Inc
4.8(
169
)
Engineer - Structural

Serving Union, IL and surrounding areas

Approved

In business since 1946

Customers say: Super punctual

"Martin and Great Lakes are consummate professionals. They are incredibly knowledgable about structures and the factors and variables that can affect them -- both internal and external. For our work, they excavated along the foundation to allow us to analyze our foundation. We highly recommend them to preserve the structure of your facilities new and old."
Response time1 day
Response rate100%
1 neighbors recently requested a quote
Avatar for AGGO Construction & Engineering, LLC
AGGO Construction & Engineering, LLC
4.7(
15
)
Engineer - Structural

Serving Union, IL and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Linda was excellent! Knowledgeable, great communicator and honest. We were told structural work was needed on our 100+ year home but after a thorough assessment, Linda recommended tuckpointing only!"
32 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Marc Anderson Architects
Marc Anderson Architects
5.0(
8
)
ArchitectArchitect - For BusinessDraftsperson/CADD

Serving Union, IL and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

Marc Anderson Architects is an easy-to-work Chicago-based full-service architecture and design firm serving the greater Chicagoland area. We listen to our clients to learn and then adopt their goals as our own. These goals focus our work to find the best custom design for each client. Our knowledge of construction methods expands our creative flexibility while also providing cost-effective solutions. With experience in residential, mixed-use developments, commercial build-outs, public institutions, daycare centers, and commercial tenant improvements, MAA is well prepared to help you plan a beautiful, functional space that fits your specific needs.

Garage & Workshop
This is what the house looked like after it was completed.
Garage & Workshop
Garage & Workshop
1860s Queen-Anne Renovation

+26

Response time1 day
Response rate100%
2 neighbors recently requested a quote
A P Builder & General Contractor LLC
4.1(
98
)
Draftsperson/CADDArchitectArchitect - For Business

Serving Union, IL and surrounding areas

Approved

Warranties offered

Customers say: Super punctual

"Our experience with AP Builder was great. Angelo was very knowledgeable and professional, keeping us informed every step of the way. This was a big important project for our home and I am extremely happy with how it came out! The cost was very reasonable and there were no surprises, everything was open and honest. I would definitely use them again and recommend to friends and family. Thank you AP!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+16

Response time5 days
Response rate99%
3 neighbors recently requested a quote
Avatar for Evolution Drafting
Evolution Drafting
3.7(
128
)
Draftsperson/CADDArchitectArchitect - For Business

Serving Union, IL and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I am having a full master bath and kitchen remodel done with new layouts in both rooms and knocking out a wall. Evolution worked with me to quickly get a drawing done of the new layouts so that the contractor could get started on the project. They made sure to include me in the process so that the design would be done exactly as my wife and I envisioned. They communicated effectively throughout the process and were always courteous and professional. I recommend them to anyone with drafting needs."
Zeal Floor Plan
Charcoal
Palm Floor Plan
Charcoal Floor 2
Charcoal Floor 1

+23

Response time1 day
Response rate100%
66 neighbors recently requested a quote
Avatar for APEX Drafting LLC
APEX Drafting LLC
3.5(
8
)
Draftsperson/CADDArchitect

Serving Union, IL and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

We have a single mission: Complete Customer Satisfaction! We have consistently focused on the needs of our customers, providing personalized attention and a stress-free experience. \nYou will find us to be competitively priced with close attention to the details. \nOur reputation is based on service, safety, and quality, regardless of how large or small the job. \nWe look forward to building a lasting relationship and guarantee your satisfaction! \n

Plan set 1
282 neighbors recently requested a quote
Robert Anthony Renovations
5.0(
1
)
Draftsperson/CADD

Serving Union, IL and surrounding areas

Approved

"We had an excellent experience working with Robert Anthony from start to finish. They were professional, responsive, and incredibly detail-oriented throughout our kitchen remodel. His team completed our renovation on time, kept the workspace clean, and communicated with us every step of the way. The quality of the craftsmanship exceeded our expectations, and you can truly tell they take pride in their work. They transformed our kitcjen beautifully and made the entire process smooth and stress-free for my family. We are beyond happy with our kitchen and we couldn’t recommended him more."
Avatar for Terraform Development & Design LLC
Terraform Development & Design LLC
4.0(
1
)
ArchitectDraftsperson/CADD

Serving Union, IL and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Offers commercial services

Terraform Development & Design LLC, delivers expert permit-ready architectural plans and drafting services nationwide. With 8+ years of experience and hundreds of clients across all 50 states, we create code-compliant residential and commercial construction documents that get approved fast and built right. \nFrom site plans, floor plans, elevations, structural & foundation drawings to MEP coordination, full construction sets, 3D renderings, interior design, solar PV layouts, and precise material takeoffs - we handle it all. Fast 4-6 week turnaround, 3 design revisions included, free revisions for city redline changes, transparent pricing (starts at $2,000), and direct partnerships with licensed engineers for stamps in every state.

493 neighbors recently requested a quote
NXT Carpentry & Outdoor Living LLC
New to Angi
Draftsperson/CADD

Serving Union, IL and surrounding areas

Approved

Free estimates

Credit card accepted

At NXT Carpentry & Outdoor Living LLC, we take pride in delivering high-quality craftsmanship and dependable service on every project. We specialize in custom decks, outdoor living spaces, home remodels, additions, framing, trim work, and new construction. Our goal is simple: build it right the first time while providing clear communication, attention to detail, and a finished product you’ll be proud of for years to come. Whether you’re updating your home or starting a new project from the ground up, we’re committed to exceeding expectations and treating your home as if it were our own.\n\nBuilt Right. Every Time.

Deck Replacement
Deck Replacement
Deck Replacement
New driveway
Back Patio

+10

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Structural Engineering FAQs, answered by experts

Yes, they offer plans for repairs or reinforcements to address issues.

Structural engineers specialize in all aspects of a building’s structural integrity, including the foundation. Foundation engineering is a critical part of structural engineering, so structural engineers are experts in foundation design. Many foundation repair companies either have a structural engineer on staff or one they work closely with, so be sure you look for that when deciding who to hire for foundation repair.

While concrete walls do not need to "breathe" in the traditional sense of the word, they do require waterproofing and dehumidifying methods, particularly in basements below the water table. Concrete both contains moisture from its initial installation and can absorb water when exposed. Ensuring proper basement ventilation , installing a vapor barrier, and controlling water exposure are all important tasks.

Costs depend on furniture type, size, complexity, and whether additional modifications are needed.

Water can seep into porous materials like wood beams, floor joists, and roof rafters within minutes, but they’ll need to see prolonged exposure before you have structural damage. Mold can start growing within 24 hours, and mold can eat away at the structural components over time. Wood rot is more of a concern, though. Wet and dry rot are fungal infections that set in in moist conditions and rapidly deteriorate wood, causing major structural damage within just a few months in some cases.

The Union, IL homeowners’ guide to structural engineering services

From average costs to expert advice, get all the answers you need to get your job done.