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TRUSTED BY LAKE FOREST, IL HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon25
    Verified structural engineering services reviews

Top-Rated Structural engineers in Lake Forest - Updated Nov 2026

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

Serving Lake Forest, 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 Lake Forest, 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!"
30 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 Lake Forest, IL and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"Marc did a great job on our garage expansion project! He was friendly and professional, taking all of our ideas and criteria and combining them into a great layout. The drawings themselves look great. We are still shopping the plans around to contractors, and Marc is always helpful with advice or ways to reduce cost. Would definitely recommend him to anyone looking for an architect."
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
Kristen Eva Kollias Architect
5.0(
12
)
Architect

Serving Lake Forest, IL and surrounding areas

Approved

In business since 2005

Free estimates

Offers commercial services

"Architect Kristin Kollias has provided me with professional and responsive help in the renovation of a vacant single family bungalow in Chicago that required extensive repair for compliance with the City of Chicago codes. She assisted in guiding me in obtaining required site plan for the residence; addressed the structural, electrical and plumbing details required; drafted and created the architectural floor plans that fit my vison of interior space; and facilitated in obtaining the necessary city permits from City of Chicago. Clearly she is a true professional and her services are greatly appreciated."
Response time4 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
A P Builder & General Contractor LLC
4.1(
98
)
ArchitectArchitect - For BusinessDraftsperson/CADD

Serving Lake Forest, 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%
4 neighbors recently requested a quote
Avatar for Evolution Drafting
Evolution Drafting
3.7(
127
)
Draftsperson/CADDArchitectArchitect - For Business

Serving Lake Forest, 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%
75 neighbors recently requested a quote
Avatar for Senga Architects
Senga Architects
4.3(
34
)
ArchitectArchitect - For Business

Serving Lake Forest, IL and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"We met with owner/senior architect, Firmin Senga to join us in the viewing of our desired property. We wanted to have an architect on board with us for reassurance that the updates we plan will work before we make an offer. He was very helpful."
Exterior
The front of the rehabbed house
Building Entrance
Gazebo
Front of New House

+63

Response time1 day
114 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Randolph Liebelt- Architect
Randolph Liebelt- Architect
4.4(
26
)
ArchitectArchitect - For Business

Serving Lake Forest, IL and surrounding areas

Approved

In business since 1993

Free estimates

Customers say: Quick response

"I am extremely pleased that I selected Randolph Liebelt - Architect for my sunroom design. Randolph has been so easy to work with throughout the entire design process. He is an excellent listener and communicator so the experience is efficient and enjoyable. I am delighted with the final design and can't wait to get it built and move in! I wish everyone in the Home business was as good as he is!"
 First Floor Plan
 Beach House
 Long Grove, IL
Second-story Addition
 Dining Room

+53

Response time1 day
Recommended by87%of homeowners
Avatar for APEX Drafting LLC
APEX Drafting LLC
3.9(
7
)
Draftsperson/CADDArchitect

Serving Lake Forest, 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
245 neighbors recently requested a quote
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Structural Engineering FAQs, answered by experts

The depth of any foundation style depends on your climate and how deep the frost line is, as building code requires that the footers of a foundation—which are built into a monolithic slab—sit at least a foot below the frost line. At the southern tip of Florida, for example, a monolithic slab foundation would only need to sit 12 inches under the soil at the widest parts. On some parts of the Canadian border, the frost line is 100 inches, which would mean a minimum of 112 inches, which is prohibitively deep for a monolithic slab.

Stone, marble, and brick are common building materials of Neoclassical architecture, though you will also find wood flooring and a range of natural stone tiles. Since several home styles fall under Neoclassical architects' umbrella, a range of building materials—including traditional wood framing—will make an appearance.

Yes, water damage can affect your walls' structural integrity. If the water or moisture sits on the walls for an extended period, it can weaken the drywall, plaster, wood framing, and other materials supporting the wall. That's why it's critical to dry out the area as soon as you notice it.

Structural engineers typically conduct inspections during a home sale or renovation, looking for signs of structural damage in various structures throughout the building, such as load-bearing walls, joists, beams, roofing trusses, foundations, and chimneys. Some of the warning signs that structural engineers check for include:

  • Dry rot

  • Infestation

  • Shifting or cracking foundations

  • Erosion

  • Water damage

  • Sagging, shifting, or damaged walls, ceilings, or roofing support

In many areas, advice from a structural engineer or an architect will be required by your building department before you can remove a wall, but even if it’s not necessary, it’s a good idea. Accidentally removing a load-bearing wall—even if a general contractor advises that it’s safe—can cause major structural damage, putting you and your family at risk and potentially costing thousands or tens of thousands of dollars in property damage.

The Lake Forest, IL homeowners’ guide to structural engineering services

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