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TRUSTED BY CLAYTON, CA HOMEOWNERS

Average homeowner rating star icon4.6
Average homeowner rating
Verified reviews icon15
Verified structural engineering services reviews

Structural engineers in Clayton

Avatar for Groundworks
Groundworks
2333 Courage Dr Ste C
4.33(
12
)
Approved Pro
Groundworks
2333 Courage Dr Ste C
4.33(
12
)
Approved Pro
Customers say: Quality work
75 local quotes requested
20 years of experience

Groundworks, formerly Bay Area Underpinning, specializes in helping homeowners with their residential and commercial foundation repair and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across the Sacramento and San Jose areas. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation. Schedule your FREE inspection today!

"We hired Groundworks CA (fka Bay Area Underpinning) for what we understood was a full foundation repair. We paid $42K. They only worked on the rear and never informed us that the front wasn’t included. Months later, while selling our home, a third-party engineer found $189K in unaddressed issues at the front. We were blindsided, lost our buyer, and suffered major financial and emotional stress. Groundworks later admitted they hadn’t measured the front. Their rushed “final inspection” months later felt reactive, not professional. When asked for a partial refund, they refused. We feel misled and abandoned. Avoid."

Dominick M on June 2025

Groundworks, formerly Bay Area Underpinning, specializes in helping homeowners with their residential and commercial foundation repair and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across the Sacramento and San Jose areas. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation. Schedule your FREE inspection today!

"We hired Groundworks CA (fka Bay Area Underpinning) for what we understood was a full foundation repair. We paid $42K. They only worked on the rear and never informed us that the front wasn’t included. Months later, while selling our home, a third-party engineer found $189K in unaddressed issues at the front. We were blindsided, lost our buyer, and suffered major financial and emotional stress. Groundworks later admitted they hadn’t measured the front. Their rushed “final inspection” months later felt reactive, not professional. When asked for a partial refund, they refused. We feel misled and abandoned. Avoid."

Dominick M on June 2025


Avatar for Drainage Pros
Drainage Pros
1456 SOS Dr
4.21(
19
)
Approved Pro
Drainage Pros
1456 SOS Dr
4.21(
19
)
Approved Pro
Customers say: Quality work
26 local quotes requested
43 years of experience

For over 33 years, Drainage Pros has successfully eliminated drainage and standing water problems for residential and commercial clients in the greater San Francisco Bay Area. At Drainage Pros, we specialize in providing each of our clients with reliable cost effective, permanent drainage solutions. Drainage Pros is the Bay Area leader in installing drainage systems with guaranteed and predictable results. Because of our ability to eliminate standing water problems, we are the first and only company in the Bay Area that offers you in writing a "5 Year No Standing Water Guarantee!" This unique guarantee of ours is unequaled in the industry. We have the skills that many have come to trust for all their Bay Area drainage needs. Our expert team is well trained and detail oriented while addressing the causes of your drainage water problems. You can rely on us! We will handle any and all standing water problems you are experiencing. Our team is committed to providing you with personalized service, the utmost care and our complete dedication to all of your project needs. At Drainage Pros, we understand that providing drainage solutions is a specialized discipline requiring a specific skill-set and training. So, whether you need a French drain, a sump pump, or a surface drainage system, Drainage Pros are the professionals of choice to rely upon every time to get your job done right! Drainage Pros, Results Guaranteed!

"The entire project took 9 days and involved a crew that was exceptional in every way. From Terrie to Tom, Rich (the owner), Alberto (the project manager), Eusebio (Alberto's right-hand man), and the entire team--they were the most respectful, diligent, patient, and fexible crew I've ever worked with. The quality of their work was outstanding, and they took great care in respecting our property while delivering an excellent solution. From a value standpoint, their price represented the best value proposition. Given the decades of experience doing ONLY this, they are literally the only game in town in my opinion. I highly recommend this team. They genuinely care about their work and provide a top-notch service."

Richard L on October 2024

For over 33 years, Drainage Pros has successfully eliminated drainage and standing water problems for residential and commercial clients in the greater San Francisco Bay Area. At Drainage Pros, we specialize in providing each of our clients with reliable cost effective, permanent drainage solutions. Drainage Pros is the Bay Area leader in installing drainage systems with guaranteed and predictable results. Because of our ability to eliminate standing water problems, we are the first and only company in the Bay Area that offers you in writing a "5 Year No Standing Water Guarantee!" This unique guarantee of ours is unequaled in the industry. We have the skills that many have come to trust for all their Bay Area drainage needs. Our expert team is well trained and detail oriented while addressing the causes of your drainage water problems. You can rely on us! We will handle any and all standing water problems you are experiencing. Our team is committed to providing you with personalized service, the utmost care and our complete dedication to all of your project needs. At Drainage Pros, we understand that providing drainage solutions is a specialized discipline requiring a specific skill-set and training. So, whether you need a French drain, a sump pump, or a surface drainage system, Drainage Pros are the professionals of choice to rely upon every time to get your job done right! Drainage Pros, Results Guaranteed!

"The entire project took 9 days and involved a crew that was exceptional in every way. From Terrie to Tom, Rich (the owner), Alberto (the project manager), Eusebio (Alberto's right-hand man), and the entire team--they were the most respectful, diligent, patient, and fexible crew I've ever worked with. The quality of their work was outstanding, and they took great care in respecting our property while delivering an excellent solution. From a value standpoint, their price represented the best value proposition. Given the decades of experience doing ONLY this, they are literally the only game in town in my opinion. I highly recommend this team. They genuinely care about their work and provide a top-notch service."

Richard L on October 2024


Avatar for ProStruct Engineering, Inc.
ProStruct Engineering, Inc.
450 Folsom Street,
5.00(
1
)
Approved Pro
ProStruct Engineering, Inc.
450 Folsom Street,
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 local quotes requested

ProStruct Engineering offers professional structural engineering services for residential building permits at reasonable prices. Our licensed and insured engineers have over 35 years of experience with 2,000+ completed projects, including new homes, additions, remodels, ADUs, retaining walls, load-bearing walls, seismic retrofits, foundation design, outdoor living spaces, and more. Our core values of integrity, responsibility, reliability, and ethics ensure affordable and high-quality services. We aim to make the home-building experience of California homeowners as stress-free as possible by delivering compliant and high-quality structural plans. We are committed to being cost-effective, with quick delivery in 2-3 weeks for most projects.

"Prompt customer service and delivery. Worked with a very knowledgeable and experienced structural engineer."

Karishma S on August 2023

ProStruct Engineering offers professional structural engineering services for residential building permits at reasonable prices. Our licensed and insured engineers have over 35 years of experience with 2,000+ completed projects, including new homes, additions, remodels, ADUs, retaining walls, load-bearing walls, seismic retrofits, foundation design, outdoor living spaces, and more. Our core values of integrity, responsibility, reliability, and ethics ensure affordable and high-quality services. We aim to make the home-building experience of California homeowners as stress-free as possible by delivering compliant and high-quality structural plans. We are committed to being cost-effective, with quick delivery in 2-3 weeks for most projects.

"Prompt customer service and delivery. Worked with a very knowledgeable and experienced structural engineer."

Karishma S on August 2023


Sergio Mayorga and Associates
1905 Canyon Oaks Cir
New on HomeAdvisorNew on Angi
Approved Pro
Sergio Mayorga and Associates
1905 Canyon Oaks Cir
New on AngiNew on HomeAdvisor
Approved Pro
39 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.


Avatar for Level Engineering San Francisco, CA (Inland)
Level Engineering San Francisco, CA (Inland)
1390 Market Street, Suite 200
4.60(
278
)
Approved Pro
Level Engineering San Francisco, CA (Inland)
1390 Market Street, Suite 200
4.60(
278
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
14 local quotes requested

At LEVEL Engineering, we are committed to common sense, real-world engineering solutions. We started LEVEL because, after years in the building industry, we continued to see something missing that cost homeowners and businesses untold stress and frustration. Contractors lost time and money, and realtors and lenders could not satisfy their client's needs. We decided to do something about it, and LEVEL Engineering was founded. We serve your interests and provide knowledgeable, expert inspection, analysis, recommendation, and reporting. Whether you need help with permits, forensics, a foundation evaluation, new or repaired engineered designs, or an inspection for your peace of mind - let us help you navigate your structural engineering projects.

"."

Allie S on October 2023

At LEVEL Engineering, we are committed to common sense, real-world engineering solutions. We started LEVEL because, after years in the building industry, we continued to see something missing that cost homeowners and businesses untold stress and frustration. Contractors lost time and money, and realtors and lenders could not satisfy their client's needs. We decided to do something about it, and LEVEL Engineering was founded. We serve your interests and provide knowledgeable, expert inspection, analysis, recommendation, and reporting. Whether you need help with permits, forensics, a foundation evaluation, new or repaired engineered designs, or an inspection for your peace of mind - let us help you navigate your structural engineering projects.

"."

Allie S on October 2023


Vista Foundry
Based In
No reviews
Vista Foundry
Based In
No reviews
3 years of experience

Fire Rebuild & Recovery Services — Helping You Recover, Rebuild, and Move Forward If your home was affected by the recent LA fires, Vista Foundry is here to help you rebuild smarter and safer. With 48 years of experience, we specialize in guiding homeowners through the recovery process with precision and expertise. Our services include: 3D Scanning & Design Recreation: Recreate your home as it was or enhance it with smarter, safer designs. Insurance Advocacy & Claim Negotiation: Maximize your payout with detailed, accurate rebuild cost estimates and expert guidance during claim negotiations. Cost-Effective Design & Engineering Solutions: We create efficient, budget-conscious plans without compromising safety or quality. Code-Compliant Structural Engineering: Ensure your new home meets today’s safety standards. Permitting & Legalization Support: Simplify the approval process and avoid delays. We focus on giving you the tools, strategies, and advocacy to restore your property, protect your investment, and rebuild with confidence. Let us help you turn a challenging situation into an opportunity to rebuild stronger and more resilient. Schedule Your Free Consultation Today → https://www.vistafoundry.com/booking

Fire Rebuild & Recovery Services — Helping You Recover, Rebuild, and Move Forward If your home was affected by the recent LA fires, Vista Foundry is here to help you rebuild smarter and safer. With 48 years of experience, we specialize in guiding homeowners through the recovery process with precision and expertise. Our services include: 3D Scanning & Design Recreation: Recreate your home as it was or enhance it with smarter, safer designs. Insurance Advocacy & Claim Negotiation: Maximize your payout with detailed, accurate rebuild cost estimates and expert guidance during claim negotiations. Cost-Effective Design & Engineering Solutions: We create efficient, budget-conscious plans without compromising safety or quality. Code-Compliant Structural Engineering: Ensure your new home meets today’s safety standards. Permitting & Legalization Support: Simplify the approval process and avoid delays. We focus on giving you the tools, strategies, and advocacy to restore your property, protect your investment, and rebuild with confidence. Let us help you turn a challenging situation into an opportunity to rebuild stronger and more resilient. Schedule Your Free Consultation Today → https://www.vistafoundry.com/booking


Mud Worx, Inc.
4.95(
19
)
Mud Worx, Inc.
4.95(
19
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Mud Worx, Inc. is your trusted partner for all your concrete needs. Whether you need concrete pouring, repair, resurfacing, or finishing, we have the skills, experience, and equipment to handle any project. We serve residential and commercial clients in Union City, CA and the surrounding areas. We pride ourselves on delivering high-quality workmanship, customer satisfaction, and competitive pricing. We use only the best materials and follow the industry standards and best practices. We can handle any concrete project, from driveways, patios, sidewalks, foundations, retaining walls, pool decks, and more. No matter the size or scope of your project, we will work with you to achieve your vision and goals. We offer estimates and consultations, and we guarantee our work. Contact Mud Worx, Inc. today at (510) 980-2117 and let us show you why we are the best concrete contractor in Union City, CA.

"Really outstanding team and service. Highly recommend and am looking forward to working with Frank and Natalia and their team on future projects."

lisa D on February 2025

Mud Worx, Inc. is your trusted partner for all your concrete needs. Whether you need concrete pouring, repair, resurfacing, or finishing, we have the skills, experience, and equipment to handle any project. We serve residential and commercial clients in Union City, CA and the surrounding areas. We pride ourselves on delivering high-quality workmanship, customer satisfaction, and competitive pricing. We use only the best materials and follow the industry standards and best practices. We can handle any concrete project, from driveways, patios, sidewalks, foundations, retaining walls, pool decks, and more. No matter the size or scope of your project, we will work with you to achieve your vision and goals. We offer estimates and consultations, and we guarantee our work. Contact Mud Worx, Inc. today at (510) 980-2117 and let us show you why we are the best concrete contractor in Union City, CA.

"Really outstanding team and service. Highly recommend and am looking forward to working with Frank and Natalia and their team on future projects."

lisa D on February 2025


SUNSET & ANNEX INC.
No reviews
SUNSET & ANNEX INC.
No reviews
3 years of experience

Family business offering architectural and engineering services. We offer logical and effective solutions that won't break your bank and fast delivery. Contact us today to discuss your project.

Family business offering architectural and engineering services. We offer logical and effective solutions that won't break your bank and fast delivery. Contact us today to discuss your project.


Stellar Roofing Services
105 Beatrice Court Suite H
No reviews
Stellar Roofing Services
105 Beatrice Court Suite H
No reviews
23 years of experience

We know how daunting managing and overseeing your project can be, but we are here to make the process smooth and easy. Stellar Roofing has been serving as a leading General Contractor Company since our inception in 2000. We offer a team of fully certified professionals who tackle everything from complex projects to simpler operations. Fueled by our commitment to excellence, we go the extra mile to make sure clients are completely satisfied with our work. Get in touch with us today for a free roof inspection or any other needs as we are the only company in California with 7 Licenses. Contact for an appointment today!

We know how daunting managing and overseeing your project can be, but we are here to make the process smooth and easy. Stellar Roofing has been serving as a leading General Contractor Company since our inception in 2000. We offer a team of fully certified professionals who tackle everything from complex projects to simpler operations. Fueled by our commitment to excellence, we go the extra mile to make sure clients are completely satisfied with our work. Get in touch with us today for a free roof inspection or any other needs as we are the only company in California with 7 Licenses. Contact for an appointment today!


Tangent Design & Engineering, Inc.
4095 Delmar Ave
5.00(
1
)
Tangent Design & Engineering, Inc.
4095 Delmar Ave
5.00(
1
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Structural Engineering, Civil Engineering, New Custom Home Design, Architectural Plans, Title 24, Solar Design, Submission and Coordination with HOA, City Design Review, Building Department Agencies. Start a new project here -> https://www.tangentde.com/contact

"They were professional, organized, and had a great communication. The pricing that they gave was better than the other company around the area. Overall the quality of the work was good."

Dani G on June 2022

Structural Engineering, Civil Engineering, New Custom Home Design, Architectural Plans, Title 24, Solar Design, Submission and Coordination with HOA, City Design Review, Building Department Agencies. Start a new project here -> https://www.tangentde.com/contact

"They were professional, organized, and had a great communication. The pricing that they gave was better than the other company around the area. Overall the quality of the work was good."

Dani G on June 2022

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FAQs for structural engineering projects in Clayton, CA

No, it’s not legal for unlicensed individuals to conduct structural calculations for buildings or building repairs. Not only do licensing requirements prevent DIYers from tackling this project, but mistakes can also be extremely dangerous and put your property and anyone inside or near it at risk of severe injury or even death. You should always hire a licensed and certified local structural engineer to make structural calculations.

Yes, all states require structural engineers to carry the proper license, with specifics determined by each state. You can use Angi’s state licensing tool to confirm that the structural engineer you’re considering holds the required licensing to tackle your job. Hiring an unlicensed structural engineer will not only cause issues with permits but it could also lead to an unsafe building. The cost of a professional, licensed, and experienced engineer is well worth the investment.

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?

Structural engineers typically charge between $100 and $250 per hour, but many jobs won’t be based on a per-hour fee. Instead, the structural engineer will offer a flat rate for the inspection and structural calculations. The flat rate for a structural engineer costs an average of around $550, but you could see prices ranging from $300 to $800, depending on the complexity of your project and how easy it is to access certain parts of your home for the inspection.

Whether you’re building a new home or building an extension on your existing property, you will likely need both a structural engineer and an architect. A structural engineer will determine what loads your foundation and framing can safely handle, and an architect will draw plans according to those structural calculations to simplify the building process. You can start by contacting a structural engineer near you, as many work alongside architects and can get all of the prep work done at once.

The Clayton, CA homeowners’ guide to structural engineering services
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