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*The Angi rating for Structural Engineering companies in Crystal Lake, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.
*The HomeAdvisor rating for Structural Engineering companies in Crystal Lake, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.
Last update on November 15, 2025
Find Structural engineers in Crystal Lake

Perma-Seal Basement Systems
Perma-Seal Basement Systems
Perma-Seal specializes in protecting the value of your home backed by 45 years of serving the Chicagoland and NW Indiana areas. Our basement waterproofing stops leaks and flooding, our foundation repairs fix settling and bowed walls, and our crawl space solutions control humidity and improve air quality. Our concrete lifting and leveling service offers a reliable, quick, and highly effective way to repair your sunken, cracked driveway, patio, pool deck, or sidewalk for a fraction of the cost of replacement. Additionally, we provide yard drainage solutions, sewer and plumbing services, and home comfort solutions such as air sealing, and insulation to ensure your home remains in top condition. What sets us apart? Our commitment to superior customer service and our solid warranty. Any product or work covered by our warranty is serviced free of charge for the entire warranty period. Choose Perma-Seal for reliable, quality solutions to keep your home safe and comfortable.
"Jose and the team did a great job. Very professional and communicative. We're happy with the result and would recommend them."
ELAINE O on September 2025
Perma-Seal specializes in protecting the value of your home backed by 45 years of serving the Chicagoland and NW Indiana areas. Our basement waterproofing stops leaks and flooding, our foundation repairs fix settling and bowed walls, and our crawl space solutions control humidity and improve air quality. Our concrete lifting and leveling service offers a reliable, quick, and highly effective way to repair your sunken, cracked driveway, patio, pool deck, or sidewalk for a fraction of the cost of replacement. Additionally, we provide yard drainage solutions, sewer and plumbing services, and home comfort solutions such as air sealing, and insulation to ensure your home remains in top condition. What sets us apart? Our commitment to superior customer service and our solid warranty. Any product or work covered by our warranty is serviced free of charge for the entire warranty period. Choose Perma-Seal for reliable, quality solutions to keep your home safe and comfortable.
"Jose and the team did a great job. Very professional and communicative. We're happy with the result and would recommend them."
ELAINE O on September 2025

Structural Design Corp
Structural Design Corp
Structural Design Corporation (SDC) is a licensed consulting engineering firm located in Libertyville, Illinois. We have been providing engineering & inspection services since 1979. We are a licensed design firm in the state of Illinois.
"Excellent honest work!"
Nick O on August 2024
Structural Design Corporation (SDC) is a licensed consulting engineering firm located in Libertyville, Illinois. We have been providing engineering & inspection services since 1979. We are a licensed design firm in the state of Illinois.
"Excellent honest work!"
Nick O on August 2024
WT Group
WT Group
WT is a full service engineering design company. We have been a family owned, local business, celebrating 50 year Anniversary in 2021. WT is a one-stop shop for your engineering and design needs. Whether you need a quick survey for a fence, engineering drawings for a major renovation, flooding problems, or even a project managment team to help you manage and navigate your project, WT has a solution for you. There are a lot of decisions in any construction project. With renovations, surprises are nearly synonymous. Our goal is to bring you confidence, and make sure you sleep well at night knowing your project is on track and on budget.
WT is a full service engineering design company. We have been a family owned, local business, celebrating 50 year Anniversary in 2021. WT is a one-stop shop for your engineering and design needs. Whether you need a quick survey for a fence, engineering drawings for a major renovation, flooding problems, or even a project managment team to help you manage and navigate your project, WT has a solution for you. There are a lot of decisions in any construction project. With renovations, surprises are nearly synonymous. Our goal is to bring you confidence, and make sure you sleep well at night knowing your project is on track and on budget.
A 1 BUILDERS GROUP INC.
A 1 BUILDERS GROUP INC.
GENERAL CONTRACTING , NEW HOMES ADDITIONS , KITCHEN BATHROOM BASEMENT WORK .
GENERAL CONTRACTING , NEW HOMES ADDITIONS , KITCHEN BATHROOM BASEMENT WORK .

Seepageseal Inc
Seepageseal Inc
We specialize in basement and crawl space waterproofing. Our experienced team is dedicated to providing effective solutions to keep your basement dry and free from water seepage.
"About 8 years ago, after a brutal series of flooding rains, we started getting water in our finished basement. Eventually over the years it became a huge problem whenever there was significant rain, which happened frequently. In August 2018 we unfinished the impacted part of the basement and obtained quotes for a repair. Seepageseal was by far the most responsive and most reasonable. They did not press us into a large scale expensive solution. They installed a vapor barrier and drain tiles, in addition to a sump pump. They brought in an experienced team that quickly, cleanly and efficiently completed the installation. It is now April 2019 and we have endured numerous rain storms that have flooded our neighbors basements. Their solution has proven 100% successful. We highly recommend this company."
TerriLynn K on April 2019
We specialize in basement and crawl space waterproofing. Our experienced team is dedicated to providing effective solutions to keep your basement dry and free from water seepage.
"About 8 years ago, after a brutal series of flooding rains, we started getting water in our finished basement. Eventually over the years it became a huge problem whenever there was significant rain, which happened frequently. In August 2018 we unfinished the impacted part of the basement and obtained quotes for a repair. Seepageseal was by far the most responsive and most reasonable. They did not press us into a large scale expensive solution. They installed a vapor barrier and drain tiles, in addition to a sump pump. They brought in an experienced team that quickly, cleanly and efficiently completed the installation. It is now April 2019 and we have endured numerous rain storms that have flooded our neighbors basements. Their solution has proven 100% successful. We highly recommend this company."
TerriLynn K on April 2019
L&D CONSTRUCTION
L&D CONSTRUCTION
Renovation and finished basement, kitchen and baths. Residential and commercial construction and repairs
Renovation and finished basement, kitchen and baths. Residential and commercial construction and repairs
Engikeering, LLC
Engikeering, LLC
Engikeering provides excellent structural engineering solutions. Engikeering will provide a licensed structural engineer to deliver an accurate assessment of the potential concern and create structural solutions. If you are removing walls, adding openings in walls, adding living space, placing an additional story on a structure or other actions that may impact the structural components of an existing building, it is advisable to utilize a structural engineer to understand the full impact of the renovation. Engikeering will provide full structural design and detailing for new structures, to completely and economically meet all of the applicable building code requirements. Engikeering can help identify the cause, assess the severity of the situation, and provide any needed design to remediate the areas of concern: Foundation cracks, interior cracking and/or framing movement, natural disaster damage, sagging floors or bowing walls, rot and/or insect deterioration, undersized, strained or damaged elements, roof failure or building collapse.
"Beware of this company. I had Jonathan come out to provide me with a verbal report on the condition of some termite damage in my basement. With each visit, he wanted more drywall removed and exacerbated the perceived severity of the situation. I soon realized that he was more problem focused than solutions oriented. I decided that I would prefer to look elsewhere for services to mitigate my issue, and effectively terminated our contract. Jonathan, without my knowledge and with what I perceive to be malicious intent, then sent his partially complete report to the Village reporting my property. Half the report was guesswork as to the extent of the damage as they were about areas that he was not even able to visually inspect. The village, after reading the report, became spooked and are asking for more than I and my professionals agree is necessary to mitigate the safety risk. Needless to say, I will never again use his services and I strongly advise that others be wary as well."
Patricia P on July 2024
Engikeering provides excellent structural engineering solutions. Engikeering will provide a licensed structural engineer to deliver an accurate assessment of the potential concern and create structural solutions. If you are removing walls, adding openings in walls, adding living space, placing an additional story on a structure or other actions that may impact the structural components of an existing building, it is advisable to utilize a structural engineer to understand the full impact of the renovation. Engikeering will provide full structural design and detailing for new structures, to completely and economically meet all of the applicable building code requirements. Engikeering can help identify the cause, assess the severity of the situation, and provide any needed design to remediate the areas of concern: Foundation cracks, interior cracking and/or framing movement, natural disaster damage, sagging floors or bowing walls, rot and/or insect deterioration, undersized, strained or damaged elements, roof failure or building collapse.
"Beware of this company. I had Jonathan come out to provide me with a verbal report on the condition of some termite damage in my basement. With each visit, he wanted more drywall removed and exacerbated the perceived severity of the situation. I soon realized that he was more problem focused than solutions oriented. I decided that I would prefer to look elsewhere for services to mitigate my issue, and effectively terminated our contract. Jonathan, without my knowledge and with what I perceive to be malicious intent, then sent his partially complete report to the Village reporting my property. Half the report was guesswork as to the extent of the damage as they were about areas that he was not even able to visually inspect. The village, after reading the report, became spooked and are asking for more than I and my professionals agree is necessary to mitigate the safety risk. Needless to say, I will never again use his services and I strongly advise that others be wary as well."
Patricia P on July 2024

Pulaski Roofing & Engineering
Pulaski Roofing & Engineering
Pulaski Roofing & Construction has over 30 plus years of experience in commercial and residential roofing and Construction throughout Chicagoland. Our services include new construction, rehabilitations and repairs. We believe that exceptional service builds long-lasting relationships and we have built our practices on a commitment to quality, reliability and respect.
"Horrible - stay away -"
ALbert M on March 2020
Pulaski Roofing & Construction has over 30 plus years of experience in commercial and residential roofing and Construction throughout Chicagoland. Our services include new construction, rehabilitations and repairs. We believe that exceptional service builds long-lasting relationships and we have built our practices on a commitment to quality, reliability and respect.
"Horrible - stay away -"
ALbert M on March 2020

Ultra Lux Construction
Ultra Lux Construction
Ultra Lux Construction Inc - 5 star General Contractor for all your remodeling needs. Licensed, bonded and insured. We offer an array of services like: - Residential Real Estate Remodeling - Commercial Real Estate Remodeling - General Contractor Services - Professional Carpenting Services - Professional bath tub refinishing. - Professional Framing & Drywall Installation - Proffesional Comercial & Residential Painting - Licensed Electrical Services - Licensed Plumbing Sevices - Professional Demolition Services - Professional Appliances Installation - Kitchen And Bathroom Cabinetry & Remodeling. - Project Management - Handyman Services - Tiles & Hardwood Floor installation - Professional Roofing - Gutters & Fascia installation Find more information on our website: www.ultraluxconstruction.com
"VG and Paul, and the whole Ultralux team did an amazing job on my recently purchased home renovation. From start to finish, we knew exactly what was going to happen next, and the team stayed on top of their timelines as discussed before the start of the project. Our home has been transformed into my dream home and we are so grateful to the work that Ultralux Construction did! We would highly recommend them to anyone looking to renovate."
Vitaliy S on May 2022
Ultra Lux Construction Inc - 5 star General Contractor for all your remodeling needs. Licensed, bonded and insured. We offer an array of services like: - Residential Real Estate Remodeling - Commercial Real Estate Remodeling - General Contractor Services - Professional Carpenting Services - Professional bath tub refinishing. - Professional Framing & Drywall Installation - Proffesional Comercial & Residential Painting - Licensed Electrical Services - Licensed Plumbing Sevices - Professional Demolition Services - Professional Appliances Installation - Kitchen And Bathroom Cabinetry & Remodeling. - Project Management - Handyman Services - Tiles & Hardwood Floor installation - Professional Roofing - Gutters & Fascia installation Find more information on our website: www.ultraluxconstruction.com
"VG and Paul, and the whole Ultralux team did an amazing job on my recently purchased home renovation. From start to finish, we knew exactly what was going to happen next, and the team stayed on top of their timelines as discussed before the start of the project. Our home has been transformed into my dream home and we are so grateful to the work that Ultralux Construction did! We would highly recommend them to anyone looking to renovate."
Vitaliy S on May 2022
The Crystal Lake, IL homeowners’ guide to structural engineering services
From average costs to expert advice, get all the answers you need to get your job done.

Looking to remove load-bearing walls and vertical supports to open up your living space? Learn about what affects the cost to install an LVL beam.

Beam installation costs are an important consideration if you’re building a home or doing renovations. Learn about average costs and factors in this guide.

A new steel I-beam is more durable than a wooden one. Learn what factors can affect steel I-beam installation costs and how to budget for this project.

A squeaky floor may just be an annoyance, or it may signal a structural problem. Learn when to be concerned about a squeaky floor.

Learn why it might be a good idea to hire a structural engineer for a home inspection in addition to a general home inspector when you’re purchasing a home.

Learn what a structural engineer is, what they do, when you might need to hire one for your home project, and how much they charge.
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