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  • Verified reviews icon20
    Verified structural engineering services reviews

Find Structural engineers in Rossmoor

Avatar for Alpha Structural, Inc.

Alpha Structural, Inc.

4.76(
147
)
Approved Pro

Alpha Structural, Inc.

4.76(
147
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
33 years of experience

Alpha Structural, Inc. has over 850 years of combined technical experience in Foundation and Hillside Repair. All of our experience is hard-core and down-in-the-trenches – not managed from behind a computer. Our in-house engineers and technicians are among the most experienced in all of Southern California. Alpha Structural, Inc. is the ONLY company in the SOCAL area licensed to ENGINEER and BUILD any type of repair project. That means that you'll work with us through the whole project, not unknown sub-contractors that you didn't hire and cannot control or predict. Alpha Structural, Inc. a licensed, bonded, and insured contractor (license # 663409). We are licensed with the following classifications: A (General Engineering Contractor). B (General Building Contractor). C-8 (Concrete). HIC (Home Improvement Contractor). CALL US NOW FOR AN INSPECTION OR ESTIMATE! (323)258-5482.

"Erinn was my initial contact and he gave a very through and fair estimate. We had structural work done to support floor joists and large beams under the garage that needed replacing. Ernesto and his team, Julio, Salvatore and Gilder worked tirelessly to complete the work and were respectful, punctual, informative and good humoured throughout the entire process. I would not hesitate to use them again or recommend them to others. A really great company!!"

Laurie C on August 2023

Alpha Structural, Inc. has over 850 years of combined technical experience in Foundation and Hillside Repair. All of our experience is hard-core and down-in-the-trenches – not managed from behind a computer. Our in-house engineers and technicians are among the most experienced in all of Southern California. Alpha Structural, Inc. is the ONLY company in the SOCAL area licensed to ENGINEER and BUILD any type of repair project. That means that you'll work with us through the whole project, not unknown sub-contractors that you didn't hire and cannot control or predict. Alpha Structural, Inc. a licensed, bonded, and insured contractor (license # 663409). We are licensed with the following classifications: A (General Engineering Contractor). B (General Building Contractor). C-8 (Concrete). HIC (Home Improvement Contractor). CALL US NOW FOR AN INSPECTION OR ESTIMATE! (323)258-5482.

"Erinn was my initial contact and he gave a very through and fair estimate. We had structural work done to support floor joists and large beams under the garage that needed replacing. Ernesto and his team, Julio, Salvatore and Gilder worked tirelessly to complete the work and were respectful, punctual, informative and good humoured throughout the entire process. I would not hesitate to use them again or recommend them to others. A really great company!!"

Laurie C on August 2023


Avatar for Nick Engineering, Inc.

Nick Engineering, Inc.

4.94(
17
)
Approved Pro

Nick Engineering, Inc.

4.94(
17
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
12 years of experience

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customization to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!

"Sam did a fantastic job in designing the structural engineering calculations for my new construction project in Santa Ana. He was very honest and recommended the all right things to create a strong foundation, which helped with an outstanding outcome! Sam was very helpful and responsive through the whole process especially fulfilling all the city?s requirements. I am extremely happy with my experience with Sam at Nick Engineering and will definitely use his services again in the future."

Shorouq S on December 2024

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customization to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!

"Sam did a fantastic job in designing the structural engineering calculations for my new construction project in Santa Ana. He was very honest and recommended the all right things to create a strong foundation, which helped with an outstanding outcome! Sam was very helpful and responsive through the whole process especially fulfilling all the city?s requirements. I am extremely happy with my experience with Sam at Nick Engineering and will definitely use his services again in the future."

Shorouq S on December 2024


Avatar for Level Engineering Los Angeles, CA (Main)

Level Engineering Los Angeles, CA (Main)

4.60(
270
)
Approved Pro

Level Engineering Los Angeles, CA (Main)

4.60(
270
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
10 years of experience

At LEVEL Engineering, we are committed to common sense, real-world engineering solutions. We started LEVEL because, after years in the building industry (Civil, Structural, Home Building, etc) we continued to see something missing in our industry that cost homeowners untold stress and frustration, contractors lost time and money and realtors and lenders left unable to satisfy their client's needs. We decided to do something about it, and then - LEVEL Engineering was founded. We serve your interests and provide knowledgeable, expert inspection, analysis, recommendation, and reporting. So whether your need is for permitting, forensics, foundation problems, new or repair engineering designs; or just for your peace of mind - let us help you navigate your structural engineering projects.

"extremely knowledgeable and office staff is wonderful to work with."

diana c on January 2024

At LEVEL Engineering, we are committed to common sense, real-world engineering solutions. We started LEVEL because, after years in the building industry (Civil, Structural, Home Building, etc) we continued to see something missing in our industry that cost homeowners untold stress and frustration, contractors lost time and money and realtors and lenders left unable to satisfy their client's needs. We decided to do something about it, and then - LEVEL Engineering was founded. We serve your interests and provide knowledgeable, expert inspection, analysis, recommendation, and reporting. So whether your need is for permitting, forensics, foundation problems, new or repair engineering designs; or just for your peace of mind - let us help you navigate your structural engineering projects.

"extremely knowledgeable and office staff is wonderful to work with."

diana c on January 2024


Avatar for New Beginning Engineering

New Beginning Engineering

5.00(
15
)
Approved Pro

New Beginning Engineering

5.00(
15
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
20 years of experience

We are a full service Architectural and Structural Engineering family-owned company and believe that quality, honesty, and fair pricing are the cornerstones to a trusting working relationship between home owner and engineer. Architectural and Structural Engineering Solutions For: --ADU's --New Home Design & Construction --2nd Floor Additions --Decks and Patio Covers --Retaining Walls and Basements --Home Design on Hillsides --All residential and commercial needs for Architectural and Structural Engineering We are a Christian based engineering company and conduct our business with the utmost ethics. We operate our business on a lump price fee. With this price, you don’t end up paying for change orders or comments back from the city. Our lump sum fee includes getting you all the way to permit. We will provide you with clean, clear, and professional looking architectural and structural engineering plans and calculations for both your contractor and for submission to your city agency. We also serve many realtors as well providing structural engineering assessment for properties either during a pre-approval process or during their contingency period to ensure the home being purchased is structurally adequate with no major issues. We chose to work in this industry because we want our customers to obtain their dreams. Your home is your sanctuary. Make your home the way you want it and work with a company that values trust, integrity, and quality.

"GS ArcDesign has had the privilege of working with New Beginning Engineering for many years, successfully completing over 15 projects together, with more projects currently in progress. Throughout this collaboration, I have consistently experienced the highest level of professionalism, reliability, and technical expertise from their team. Their services—including structural design, structural calculations, energy compliance (Title-24), and MEP engineering—have been integral to both residential and commercial projects, particularly those involving legalization and permitting. Each project has been handled with thoroughness, precision, and a commitment to excellence. As an architectural firm, we rely heavily on engineering partners who are not only skilled but also dependable and trustworthy. New Beginning Engineering has consistently met and exceeded those expectations, making them one of our most valued collaborators. I hold a very positive impression of New Beginning Engineering and confidently recommend their services to anyone seeking competent, reliable, and professional engineering support."

Sisitha E on August 2025

We are a full service Architectural and Structural Engineering family-owned company and believe that quality, honesty, and fair pricing are the cornerstones to a trusting working relationship between home owner and engineer. Architectural and Structural Engineering Solutions For: --ADU's --New Home Design & Construction --2nd Floor Additions --Decks and Patio Covers --Retaining Walls and Basements --Home Design on Hillsides --All residential and commercial needs for Architectural and Structural Engineering We are a Christian based engineering company and conduct our business with the utmost ethics. We operate our business on a lump price fee. With this price, you don’t end up paying for change orders or comments back from the city. Our lump sum fee includes getting you all the way to permit. We will provide you with clean, clear, and professional looking architectural and structural engineering plans and calculations for both your contractor and for submission to your city agency. We also serve many realtors as well providing structural engineering assessment for properties either during a pre-approval process or during their contingency period to ensure the home being purchased is structurally adequate with no major issues. We chose to work in this industry because we want our customers to obtain their dreams. Your home is your sanctuary. Make your home the way you want it and work with a company that values trust, integrity, and quality.

"GS ArcDesign has had the privilege of working with New Beginning Engineering for many years, successfully completing over 15 projects together, with more projects currently in progress. Throughout this collaboration, I have consistently experienced the highest level of professionalism, reliability, and technical expertise from their team. Their services—including structural design, structural calculations, energy compliance (Title-24), and MEP engineering—have been integral to both residential and commercial projects, particularly those involving legalization and permitting. Each project has been handled with thoroughness, precision, and a commitment to excellence. As an architectural firm, we rely heavily on engineering partners who are not only skilled but also dependable and trustworthy. New Beginning Engineering has consistently met and exceeded those expectations, making them one of our most valued collaborators. I hold a very positive impression of New Beginning Engineering and confidently recommend their services to anyone seeking competent, reliable, and professional engineering support."

Sisitha E on August 2025


Avatar for Harsini, Inc.

Harsini, Inc.

5.00(
6
)
Approved Pro

Harsini, Inc.

5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects, no matter how big or small. We are experts in our field and will always keep you informed on your particular task or project in a manner that is understandable to you. We look forward to earning your business!

"Mahyar was knowledgeable and a great communicator. His report was clear and helpful. He was also prompt in responding. All-around pleasant to work with. Highly recommend this firm."

Liz G on April 2023

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects, no matter how big or small. We are experts in our field and will always keep you informed on your particular task or project in a manner that is understandable to you. We look forward to earning your business!

"Mahyar was knowledgeable and a great communicator. His report was clear and helpful. He was also prompt in responding. All-around pleasant to work with. Highly recommend this firm."

Liz G on April 2023


Avatar for OConsulting

OConsulting

4.88(
4
)
Approved Pro

OConsulting

4.88(
4
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

OConsulting is locally owned and operated in Irvine, CA. With over 20 years of experience, we are experts in structural design for residential and commercial projects! We believe in empowering our clients with knowledge, taking the time to explore costs and benefits throughout the project. We are practical. We are flexible. We are customer-centric. We leverage the latest in design tools and comply with all building code requirements. We take pride in every project we take on and work hard to ensure all your expectations are met! We can help with structural design for: * NEW - We can help you from the ground-up on an entirely new project. * REMODEL - Looking to remove walls and open up space? Please note: for soils report, please contact a geotechnical firm; for a foundation inspection, please contact a foundation repair company.

"AMAZING! This was my first time doing an addition to our house and I called Fredy based on a referral from my neighbor. Fredy is nice, professional, caring and true to his word. He came out to the house, even though we are only adding 36 square feet (taking garage space to enlarge the bathroom), he treated me like it was his most important project. He answered all of my questions - I had a few being new to this. He provided all of the needed plans, specs and paperwork and for the best price (I compared 2 other firms). The plans were perfect and the city approved them while I was at the counter - in and out. After getting the plans approved, Fredy was there to answer follow up questions that my contractor had too. I will be using Fredy on every project moving forward and referring him to anyone needing his services."

Tim P on September 2021

OConsulting is locally owned and operated in Irvine, CA. With over 20 years of experience, we are experts in structural design for residential and commercial projects! We believe in empowering our clients with knowledge, taking the time to explore costs and benefits throughout the project. We are practical. We are flexible. We are customer-centric. We leverage the latest in design tools and comply with all building code requirements. We take pride in every project we take on and work hard to ensure all your expectations are met! We can help with structural design for: * NEW - We can help you from the ground-up on an entirely new project. * REMODEL - Looking to remove walls and open up space? Please note: for soils report, please contact a geotechnical firm; for a foundation inspection, please contact a foundation repair company.

"AMAZING! This was my first time doing an addition to our house and I called Fredy based on a referral from my neighbor. Fredy is nice, professional, caring and true to his word. He came out to the house, even though we are only adding 36 square feet (taking garage space to enlarge the bathroom), he treated me like it was his most important project. He answered all of my questions - I had a few being new to this. He provided all of the needed plans, specs and paperwork and for the best price (I compared 2 other firms). The plans were perfect and the city approved them while I was at the counter - in and out. After getting the plans approved, Fredy was there to answer follow up questions that my contractor had too. I will be using Fredy on every project moving forward and referring him to anyone needing his services."

Tim P on September 2021


Avatar for RCS Engineering Services

RCS Engineering Services

5.00(
3
)
Approved Pro

RCS Engineering Services

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

Our firm provides structural engineering support for all phases in the design and construction process. Our primary function is to create structural plan packages for submission to the governing authority. We are also available to conduct preliminary field visits and structural observations during construction. In whichever service you need, we pride ourselves in carrying out the job professionally, quickly, and for an affordable price.

"I searched many and started off with others and nobody came close in handling what we needed. I found Richard, he came in and took care of it all; it was completed in a timely manner with his accurate thinking. He definitely thought ahead and it saved me a lot of time, grief and money. He got ahead of any issues and resolved potential problems that could arise. He knew exactly what the city would require and did what needed to be done which saved us an untold amount of time and money. I did not know him from Adam, he works at a very different level of ability and knowledge. His pricing for me was the best! He is a gem, get him if you can!"

Constantine P on January 2020

Our firm provides structural engineering support for all phases in the design and construction process. Our primary function is to create structural plan packages for submission to the governing authority. We are also available to conduct preliminary field visits and structural observations during construction. In whichever service you need, we pride ourselves in carrying out the job professionally, quickly, and for an affordable price.

"I searched many and started off with others and nobody came close in handling what we needed. I found Richard, he came in and took care of it all; it was completed in a timely manner with his accurate thinking. He definitely thought ahead and it saved me a lot of time, grief and money. He got ahead of any issues and resolved potential problems that could arise. He knew exactly what the city would require and did what needed to be done which saved us an untold amount of time and money. I did not know him from Adam, he works at a very different level of ability and knowledge. His pricing for me was the best! He is a gem, get him if you can!"

Constantine P on January 2020


Avatar for Top Pros Construction, Inc.

Top Pros Construction, Inc.

4.97(
140
)

Top Pros Construction, Inc.

4.97(
140
)
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

We are Experts in home remodeling, improvements, landscape, roofing and room additions – We are a licensed, insured, and bonded remodeling and construction company, working exclusively in home remodeling and improvements. We are a team of experienced hardworking people, project managers, engineers, architects, and designers ready to work for you. We aim to produce excellent workmanship, top quality labor, and advanced integration and affordable services that meet our clients‘ demands. Top Pros Construction provides services to all inside and outside remodeling needs on the kitchen, bathroom, room addition (ADU), and any custom remodeling you may need.

"The crew repaired several damaged fence panels, matching the replacements so well that everything looks original. They moved steadily and left the yard tidy afterward. The updated fence feels sturdier and gives the backyard a more secure and finished feel."

Zachary S on December 2025

We are Experts in home remodeling, improvements, landscape, roofing and room additions – We are a licensed, insured, and bonded remodeling and construction company, working exclusively in home remodeling and improvements. We are a team of experienced hardworking people, project managers, engineers, architects, and designers ready to work for you. We aim to produce excellent workmanship, top quality labor, and advanced integration and affordable services that meet our clients‘ demands. Top Pros Construction provides services to all inside and outside remodeling needs on the kitchen, bathroom, room addition (ADU), and any custom remodeling you may need.

"The crew repaired several damaged fence panels, matching the replacements so well that everything looks original. They moved steadily and left the yard tidy afterward. The updated fence feels sturdier and gives the backyard a more secure and finished feel."

Zachary S on December 2025


Avatar for Daniel's Development and Construction

Daniel's Development and Construction

5.00(
32
)

Daniel's Development and Construction

5.00(
32
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Daniel’s Development Group Inc. is family owned and operated Construction Firm. We offer a full line of construction & remodeling services in Greater Los Angeles Area. . We also offer Design-Build approach where architectural designer, structural engineer & building contractor are one and the same. Emin Mark Mamedov is a company owner that personally manages each project from beginning to end. That includes our 1st meeting, the estimate, the contract, architectural designs if needed, and lastly building the project. With Daniel's construction you can feel confident that your project will be handled directly by experienced professionals. We built our success on the philosophy that the clients objectives become our own. And we tailor the requirements of the project to meet those objectives.

Daniel’s Development Group Inc. is family owned and operated Construction Firm. We offer a full line of construction & remodeling services in Greater Los Angeles Area. . We also offer Design-Build approach where architectural designer, structural engineer & building contractor are one and the same. Emin Mark Mamedov is a company owner that personally manages each project from beginning to end. That includes our 1st meeting, the estimate, the contract, architectural designs if needed, and lastly building the project. With Daniel's construction you can feel confident that your project will be handled directly by experienced professionals. We built our success on the philosophy that the clients objectives become our own. And we tailor the requirements of the project to meet those objectives.


Avatar for Top Value

Top Value

4.89(
27
)

Top Value

4.89(
27
)
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

Los Angeles-based general construction, remodeling and home improvement company offering quality and value for residential and commercial projects. Exterior and interior projects – no job is too big or small! Top Value delivers four standards in every project we take on: Quality: That the finished product will be beautiful goes without saying, but at Top Value we make sure the materials we use are durable and self-sustaining, so that you don’t need to spend time and money on maintenance or replacements. Value: Our long-standing relationship with our suppliers means we are able to pass on our savings to you, offering our customers competitive prices without compromising on quality. Service: Our friendly, professional project managers ensure that everything runs smoothly so that you don’t have to have to spend your time doing so. Fluent in English and Spanish, your project manager will liaise with you and our team at every step of the way. We’re not satisfied until you are. Timeliness:We work with our customers to set a realistic schedule that ensures work is done efficiently and in time. Our team is on the job site, consistently and every day, to make sure that we achieve what we say we will .

"Prompt completion of work at reasonable cost and high quality"

Robert C on March 2021

Los Angeles-based general construction, remodeling and home improvement company offering quality and value for residential and commercial projects. Exterior and interior projects – no job is too big or small! Top Value delivers four standards in every project we take on: Quality: That the finished product will be beautiful goes without saying, but at Top Value we make sure the materials we use are durable and self-sustaining, so that you don’t need to spend time and money on maintenance or replacements. Value: Our long-standing relationship with our suppliers means we are able to pass on our savings to you, offering our customers competitive prices without compromising on quality. Service: Our friendly, professional project managers ensure that everything runs smoothly so that you don’t have to have to spend your time doing so. Fluent in English and Spanish, your project manager will liaise with you and our team at every step of the way. We’re not satisfied until you are. Timeliness:We work with our customers to set a realistic schedule that ensures work is done efficiently and in time. Our team is on the job site, consistently and every day, to make sure that we achieve what we say we will .

"Prompt completion of work at reasonable cost and high quality"

Robert C on March 2021

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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?

By careful planning and reinforcement to maintain structural integrity.

You should avoid drilling or cutting into load-bearing beams because removing material will weaken it and increase the risk of structural damage or even collapse. If you do need to drill into a load-bearing beam, speak with a structural engineer first to discuss where it’s safest to drill and the width and depth of the bit that’s safe to use.

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

Failure to compact the soil during construction is the most common cause of leaning retaining walls. In addition, poor drainage can lead to excessive water pressure behind a retaining wall, pushing against it until it begins to move forward away from the soil it is holding back.

The Rossmoor, CA homeowners’ guide to structural engineering services

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

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