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    Average homeowner rating
  • Verified reviews icon101
    Verified structural engineering services reviews

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"Very, very disappointing experience; Lux replaced the foundation of my 1850 log cabin. The design was bad, the communication was bad, the execution was bad. Throughout the entire process, they were making mistakes. I now need to pay another company to fix the mess they left behind. I would strongly suggest not using this company!"

Don H on August 2024

LUX Foundation Solutions is a fully licensed and insured foundation repair, waterproofing, crawlspace repair and masonry service contractor. Providing services to a large part of central and Northern Virginia. With Combine Experience of over 25 years!

"Very, very disappointing experience; Lux replaced the foundation of my 1850 log cabin. The design was bad, the communication was bad, the execution was bad. Throughout the entire process, they were making mistakes. I now need to pay another company to fix the mess they left behind. I would strongly suggest not using this company!"

Don H on August 2024


Avatar for JES Foundation Repair

JES Foundation Repair

4.24(
338
)
Approved Pro

JES Foundation Repair

4.24(
338
)
Approved Pro
Customers say: Quality work
38 local quotes requested
32 years of experience

Established in 1993, JES stands as a trusted subsidiary of Groundworks, a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across the state of Virginia and Maryland, we bring our local expertise closer to you. JES proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At JES, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate! 410516000653 (DC) | 50637 (MD) | WV027473 (WV)

"JES was very professional and easy to work with from the beginning to the end of our basement project. Eric was very knowledgeable, and exceedingly helpful in answering our questions and making us feel comfortable with the choices we made. The crew that did the work were quick, clean, and extremely efficient. We were very happy with everything they did!"

Andrea M on October 2025

Established in 1993, JES stands as a trusted subsidiary of Groundworks, a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across the state of Virginia and Maryland, we bring our local expertise closer to you. JES proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At JES, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate! 410516000653 (DC) | 50637 (MD) | WV027473 (WV)

"JES was very professional and easy to work with from the beginning to the end of our basement project. Eric was very knowledgeable, and exceedingly helpful in answering our questions and making us feel comfortable with the choices we made. The crew that did the work were quick, clean, and extremely efficient. We were very happy with everything they did!"

Andrea M on October 2025


Exterior Waterproofing Experts

4.83(
24
)
Approved Pro

Exterior Waterproofing Experts

4.83(
24
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
19 local quotes requested

Exterior Waterproofing Experts is a Class A General Contractor in the state of Virginia since 1997. Our service protects your home against wet basements, water leaks, flooding, water seepage, foundation leaking, and wall seepage. We have been doing subcontract grading and drainage work for many years. We have completed many waterproofing contracts for residents of Fairfax County, including: Fairfax, Alexandria, Arlington, McLean, Great Falls, Potomac, and Vienna, Virginia (VA). We are now offering to work directly for clients, passing the savings on to the homeowners. It is our belief that water problems are best solved from the outside before water gets into your home.

"My basement had mold and evidence of water damage in July/August, and I was referred to Exterior Waterproofing Experts. The majority of the mold was on the side of my house, but the salesperson made a strong pitch about the need to waterproof the front of my home by digging up the garden down to the foundation. My wife was largely convinced, so we went ahead with the $8000 project. Six months later, the insulation behind the waterproofed front of the house is sopping wet. When the salesperson came back to my home to take a look, his explanation was that the water probably came up through the floor. His words were along the lines of "99% of the time the water comes up through the front." At this point, I feel like I have an expensive solution to a problem I didn't really have."

Ben W on March 2021

Exterior Waterproofing Experts is a Class A General Contractor in the state of Virginia since 1997. Our service protects your home against wet basements, water leaks, flooding, water seepage, foundation leaking, and wall seepage. We have been doing subcontract grading and drainage work for many years. We have completed many waterproofing contracts for residents of Fairfax County, including: Fairfax, Alexandria, Arlington, McLean, Great Falls, Potomac, and Vienna, Virginia (VA). We are now offering to work directly for clients, passing the savings on to the homeowners. It is our belief that water problems are best solved from the outside before water gets into your home.

"My basement had mold and evidence of water damage in July/August, and I was referred to Exterior Waterproofing Experts. The majority of the mold was on the side of my house, but the salesperson made a strong pitch about the need to waterproof the front of my home by digging up the garden down to the foundation. My wife was largely convinced, so we went ahead with the $8000 project. Six months later, the insulation behind the waterproofed front of the house is sopping wet. When the salesperson came back to my home to take a look, his explanation was that the water probably came up through the floor. His words were along the lines of "99% of the time the water comes up through the front." At this point, I feel like I have an expensive solution to a problem I didn't really have."

Ben W on March 2021


Kamran Ohi P E

4.82(
155
)
Approved Pro

Kamran Ohi P E

4.82(
155
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
58 local quotes requested

Small business, self employed, use subcontractors that I can trust, minimum consultation and visit fee $295. That includes, site visit, inspection, and a verbal on site report and follow up with contractors as needed . The fee for site visit and inspection is a flat fee, basically it is the charge to drive to your location and provide a verbal report. This fee does not include a written formal report. A written report is approximately an additional $300. I work evenings and weekends as needed, structural, architectural and mechanical design, inspections and reports, fronsic, expert witness. Please contact by phone or email: [email protected]. I will be on Vacation from July 9th till July 25th

"Kamran was easy to coordinate with and schedule the inspection. He was prompt and thorough with his review. His write-up was completed in a couple of days without any follow-up being required."

Andrew C on May 2025

Small business, self employed, use subcontractors that I can trust, minimum consultation and visit fee $295. That includes, site visit, inspection, and a verbal on site report and follow up with contractors as needed . The fee for site visit and inspection is a flat fee, basically it is the charge to drive to your location and provide a verbal report. This fee does not include a written formal report. A written report is approximately an additional $300. I work evenings and weekends as needed, structural, architectural and mechanical design, inspections and reports, fronsic, expert witness. Please contact by phone or email: [email protected]. I will be on Vacation from July 9th till July 25th

"Kamran was easy to coordinate with and schedule the inspection. He was prompt and thorough with his review. His write-up was completed in a couple of days without any follow-up being required."

Andrew C on May 2025


Avatar for ISMonitoring LLC

ISMonitoring LLC

No reviews yet

ISMonitoring LLC

No reviews yet
20 years of experience

ISMonitoring LLC has a deep background in structural engineering including analytical, numerical, and experimental methods. Our interests and experiences include structural design and analysis, steel design, reinforced concrete design, wooden structures, structural rehabilitation, condition assessment, and nondestructive evaluation.

ISMonitoring LLC has a deep background in structural engineering including analytical, numerical, and experimental methods. Our interests and experiences include structural design and analysis, steel design, reinforced concrete design, wooden structures, structural rehabilitation, condition assessment, and nondestructive evaluation.


Avatar for Tadash LLC

Tadash LLC

5.00(
5
)

Tadash LLC

5.00(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Tadash LLC provides contracting for all types of concrete operations. We are also experienced in building retaining walls, driveways, sidewalks, and curbs. We can perform structural repairs & maintenance, demolition, and we can assist with permitting requirements through your local County. Tadash LLC has experienced personnel that are focused on the delivery of reliable service and quality, while maintaining safe working conditions. We strive to provide reasonably priced services with complete licenses and insurance coverage for your biggest or smallest jobs. www.tadashnova.com Contact us for a free estimate [email protected]

"Excellent, thank you!"

R. W on December 2024

Tadash LLC provides contracting for all types of concrete operations. We are also experienced in building retaining walls, driveways, sidewalks, and curbs. We can perform structural repairs & maintenance, demolition, and we can assist with permitting requirements through your local County. Tadash LLC has experienced personnel that are focused on the delivery of reliable service and quality, while maintaining safe working conditions. We strive to provide reasonably priced services with complete licenses and insurance coverage for your biggest or smallest jobs. www.tadashnova.com Contact us for a free estimate [email protected]

"Excellent, thank you!"

R. W on December 2024



Avatar for PermitCare LLC

PermitCare LLC

No reviews yet

PermitCare LLC

No reviews yet
Free onsite estimate

PermitCare provides full range of permit expediting services for all types of Building and Construction around DMV areas. Our team can process your online permit (ePermit) application in other USA Jurisdictions without physical contact. Our permit expediters team consists of licensed architects, and professional engineers who are experienced to work with city/county approval authorities to quickly get your permits approved.

PermitCare provides full range of permit expediting services for all types of Building and Construction around DMV areas. Our team can process your online permit (ePermit) application in other USA Jurisdictions without physical contact. Our permit expediters team consists of licensed architects, and professional engineers who are experienced to work with city/county approval authorities to quickly get your permits approved.


Avatar for P&R Property Solutions, LLC

P&R Property Solutions, LLC

5.00(
3
)

P&R Property Solutions, LLC

5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

An Engineer owned & led Class A Construction Company *Foundation Repairs - We repair foundations that have cracked, been damaged by water or settled poorly. *Structural Modifications & Repairs - We reinforce the structural integrity of buildings and rearrange structures like basements, sled or foundation walls. *Residential Construction & Remodeling - New home construction, home expansion and remodeling.

"Fantastic engineering, superb work with outstanding finished product. HIGHLY RECOMMEND P&R Solutions"

Stephen M on March 2024

An Engineer owned & led Class A Construction Company *Foundation Repairs - We repair foundations that have cracked, been damaged by water or settled poorly. *Structural Modifications & Repairs - We reinforce the structural integrity of buildings and rearrange structures like basements, sled or foundation walls. *Residential Construction & Remodeling - New home construction, home expansion and remodeling.

"Fantastic engineering, superb work with outstanding finished product. HIGHLY RECOMMEND P&R Solutions"

Stephen M on March 2024


Avatar for Lopez Architecture

Lopez Architecture

No reviews yet

Lopez Architecture

No reviews yet
4 years of experience

Free Phone calls | $100 per home visit. Pablo Lopez is a licensed architect here in Springfield, VA who has a full time job as an architect. During my free time, I give architecture advice to homeowners who are looking to do any kind of renovations in their Northerm Virginia home. Bathrooms, kitchens, basements, living areas, small/large areas, corners, open concepts, furniture and landscaping. I help homeowners bring up the best of their homes with the least amount of investment. I understand the dificulties of overtaking renovations. Not only the economical burden but also the amount of time and energy required. I really want to help you make the most out of your budget and resources. So you can improve your home without breaking the bank. Together, we will look for all the options and will help you find the most cost-effective project that is right for you. I will also help you find the contractors in your area that will get the job done for you, in the time and money that works best for you. Please, call me for a free consultation. I am looking forward to hearing from you.

Free Phone calls | $100 per home visit. Pablo Lopez is a licensed architect here in Springfield, VA who has a full time job as an architect. During my free time, I give architecture advice to homeowners who are looking to do any kind of renovations in their Northerm Virginia home. Bathrooms, kitchens, basements, living areas, small/large areas, corners, open concepts, furniture and landscaping. I help homeowners bring up the best of their homes with the least amount of investment. I understand the dificulties of overtaking renovations. Not only the economical burden but also the amount of time and energy required. I really want to help you make the most out of your budget and resources. So you can improve your home without breaking the bank. Together, we will look for all the options and will help you find the most cost-effective project that is right for you. I will also help you find the contractors in your area that will get the job done for you, in the time and money that works best for you. Please, call me for a free consultation. I am looking forward to hearing from you.

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Structural Engineering questions, answered by experts

The process of hiring a structural engineer starts by finding reliable professionals in your area and comparing quotes from at least three of them. From there, you can narrow down your selection by asking some leading questions:

  • Do you have experience working in my specific area?

  • Do you have professional indemnity insurance?

  • What will your structural report cover?

  • Do you charge a flat fee for a structural report or by the hour?

  • How long have you been in business?

  • Do you have a list of customer references?

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.

Absolutely, as it ensures designs are viable and won’t compromise structural integrity.

The essential difference between an architect and an engineer is that architects typically focus more on the aesthetic design of buildings, although not without consideration for the structural integrity of the building. Engineers focus more on the structural, technical, and practical aspects of whether and how an architectural design can be built as drawn. You may need to hire both types of professionals if you’re designing and building a new home.

A 4-inch-thick concrete slab can support around 4,000 pounds per square foot if a contractor reinforces the slab with rebar, while that same slab without reinforcements will support closer to 1,000 pounds. For the purposes of a patio, 4 inches in thickness without reinforcement should suffice unless you’re installing heavy kitchen equipment or a hot tub on it. In those cases, reinforcing your slab and sticking with 4 inches of thickness should provide plenty of strength.

The Manassas, VA homeowners’ guide to structural engineering services

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