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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
34 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 Level Engineering Los Angeles, CA (Downtown)

Level Engineering Los Angeles, CA (Downtown)

4.61(
268
)
Approved Pro

Level Engineering Los Angeles, CA (Downtown)

4.61(
268
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
11 years of experience

At LEVEL, we are committed to common sense, real-world solutions. We pioneered LEVEL because, after years spent exploring all disciplines of civil and structural engineering in the building industry, we continually encountered the missing fundamentals in our own trade. These lost elements of service culture & exceptional business practice inevitably cost owners & entities untold stress and frustration; contractors lost time & money, realtors & lenders were left unable to satisfy their client's needs. We concluded that our capacity for A&E services could function at a higher level, thus, LEVEL Engineering & Inspections was founded. We serve your interests & provide knowledgeable, expert design, inspections, analysis, forensics, recommendations, and reporting. Whether your need is for permitting, forensics; new, remodel, or repair engineering designs; foundation problems; civil or architecture - let us help you navigate your Civil, Commercial, Residential Structural Engineering needs.

"Seemed knowledgeable, helpful advice. My only problem was that it seems impossible to get an answer when trying to reach them for a follow up question."

Mary C on July 2022

At LEVEL, we are committed to common sense, real-world solutions. We pioneered LEVEL because, after years spent exploring all disciplines of civil and structural engineering in the building industry, we continually encountered the missing fundamentals in our own trade. These lost elements of service culture & exceptional business practice inevitably cost owners & entities untold stress and frustration; contractors lost time & money, realtors & lenders were left unable to satisfy their client's needs. We concluded that our capacity for A&E services could function at a higher level, thus, LEVEL Engineering & Inspections was founded. We serve your interests & provide knowledgeable, expert design, inspections, analysis, forensics, recommendations, and reporting. Whether your need is for permitting, forensics; new, remodel, or repair engineering designs; foundation problems; civil or architecture - let us help you navigate your Civil, Commercial, Residential Structural Engineering needs.

"Seemed knowledgeable, helpful advice. My only problem was that it seems impossible to get an answer when trying to reach them for a follow up question."

Mary C on July 2022


Avatar for TY Engineering and Design, Inc.

TY Engineering and Design, Inc.

4.92(
79
)
Approved Pro

TY Engineering and Design, Inc.

4.92(
79
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
16 years of experience

TY Engineering And Design, Inc., provides quality engineering and design services. With over 11 years of experience our professionals have the knowledge and skills to provide high quality residential and commercial services. Give us a call at (310) 935-0060 or visit www.ty-eng.com for a quote on your next project.

"I've had the recent good fortune to work with Tolga on renovation projects in Los Angeles and Manhattan Beach for which I am the Architect. The success of renovation work relies heavily on collaborative and creative structural engineering in order to realize interior and exterior architecture goals. Tolga instinctively understood my design goals and in a very professional manner he crafted solutions to bring them to reality. Many thanks Tolga. I look forward to our next collaboration."

Miguel E on November 2023

TY Engineering And Design, Inc., provides quality engineering and design services. With over 11 years of experience our professionals have the knowledge and skills to provide high quality residential and commercial services. Give us a call at (310) 935-0060 or visit www.ty-eng.com for a quote on your next project.

"I've had the recent good fortune to work with Tolga on renovation projects in Los Angeles and Manhattan Beach for which I am the Architect. The success of renovation work relies heavily on collaborative and creative structural engineering in order to realize interior and exterior architecture goals. Tolga instinctively understood my design goals and in a very professional manner he crafted solutions to bring them to reality. Many thanks Tolga. I look forward to our next collaboration."

Miguel E on November 2023


Avatar for Alpha Omega

Alpha Omega

4.63(
75
)
Approved Pro

Alpha Omega

4.63(
75
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
23 years of experience

Alpha Omega is a full engineering firm and full service provider of residential and commercial construction with a reputation for complete customer satisfaction and on time, on budget completion of a wide variety of construction projects. With years of experience serving our clients throughout Inland Empire area, Alpha Omega has developed a reputation for intelligent design, creative problem solving, and an uncompromising commitment to professionalism, and integrity, that has made us one of the areas most respected and in demand general contractors and engineering firm. Whether working directly with our end customers, or contracted through an intermediary architectural engineering firm, we have the capability to faithfully execute your plans or provide design and build services as required.

"."

Nissa G on May 2025

Alpha Omega is a full engineering firm and full service provider of residential and commercial construction with a reputation for complete customer satisfaction and on time, on budget completion of a wide variety of construction projects. With years of experience serving our clients throughout Inland Empire area, Alpha Omega has developed a reputation for intelligent design, creative problem solving, and an uncompromising commitment to professionalism, and integrity, that has made us one of the areas most respected and in demand general contractors and engineering firm. Whether working directly with our end customers, or contracted through an intermediary architectural engineering firm, we have the capability to faithfully execute your plans or provide design and build services as required.

"."

Nissa G on May 2025


Avatar for Pac Sands Corp

Pac Sands Corp

5.00(
5
)
Approved Pro

Pac Sands Corp

5.00(
5
)
Approved Pro
9 years of experience
Free onsite estimate

We specialize in home designs, structural engineering, and architectural plans for new homes and ADUs, and helping customers get building permits fast. We've been licensed professional engineers in California for over 20 years. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"Muy buen servicio y excelente compania "

Ernesto M on August 2025

We specialize in home designs, structural engineering, and architectural plans for new homes and ADUs, and helping customers get building permits fast. We've been licensed professional engineers in California for over 20 years. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"Muy buen servicio y excelente compania "

Ernesto M on August 2025


Peter T. Erdelyi & Associates, Inc.

4.53(
84
)
Approved Pro

Peter T. Erdelyi & Associates, Inc.

4.53(
84
)
Approved Pro
Customers say: Quick response
50 years of experience
Free onsite estimate

Peter T. Erdelyi and his office of 15 employees have designed thousands of residential and commercial projects over the past 37 years - remodels, additions and new buildings

"Very professional and prompt. Did a great job"

Henry D on November 2025

Peter T. Erdelyi and his office of 15 employees have designed thousands of residential and commercial projects over the past 37 years - remodels, additions and new buildings

"Very professional and prompt. Did a great job"

Henry D on November 2025


"I hired AmityGale for my structural engineering home remodel project. I was very pleased with the professionalism and communication . Pricing was competitive and I will definitely recommend them. Thanks again for making this a smooth process in what could have been a stressful experience."

Jenny E on July 2023

With several years of experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"I hired AmityGale for my structural engineering home remodel project. I was very pleased with the professionalism and communication . Pricing was competitive and I will definitely recommend them. Thanks again for making this a smooth process in what could have been a stressful experience."

Jenny E on July 2023


Avatar for JZ Structural, Inc.

JZ Structural, Inc.

5.00(
2
)
Approved Pro

JZ Structural, Inc.

5.00(
2
)
Approved Pro
Customers say: Quick response
16 years of experience
Free onsite estimate

JZ Structural, Inc. is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

"N/A"

Pablo G on April 2022

JZ Structural, Inc. is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

"N/A"

Pablo G on April 2022


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
8 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


CCD - Engineering and Design

4.29(
14
)
Approved Pro

CCD - Engineering and Design

4.29(
14
)
Approved Pro
Customers say: Quick response
40 years of experience
Free onsite estimate

Established in 1986. Specializes in design and structural engineering for residential and commercial projects, as well as in Project Management. Licensed in the State of California.

"Miguel is an amazing structural engineer and architect! He did the remodeling plans for our townhome in Marina Del Rey and we were very satisfied. Our HOA gave us a lot of trouble with our plans and they constantly needed to be revised and Miguel revised them speedily and efficiently. He was also very professional and patient with all of our changing needs. He explained things in a calm and informative way so we can fully understand what we can and can't do. He's extremely knowledgeable of city codes and policies. Highly recommended! Thanks Miguel!"

Cristian R on October 2023

Established in 1986. Specializes in design and structural engineering for residential and commercial projects, as well as in Project Management. Licensed in the State of California.

"Miguel is an amazing structural engineer and architect! He did the remodeling plans for our townhome in Marina Del Rey and we were very satisfied. Our HOA gave us a lot of trouble with our plans and they constantly needed to be revised and Miguel revised them speedily and efficiently. He was also very professional and patient with all of our changing needs. He explained things in a calm and informative way so we can fully understand what we can and can't do. He's extremely knowledgeable of city codes and policies. Highly recommended! Thanks Miguel!"

Cristian R on October 2023

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Structural Engineering questions, answered by experts

No, a structural engineer is not the same as a builder. A structural engineer is an expert in all things related to the structural integrity of a building. The structural engineer is responsible for calculating the correct materials in terms of load-bearing capacity and overall structural safety. Structural engineers do not perform the actual building of the house or other structures. Rather, the builder executes the plans and designs specified by the structural engineer.

A structural engineer’s report includes a professional assessment of a property’s foundation condition, structural elements like roof trusses and floor joists, and the skeleton of the home, including studs, beams, and rafters. It will also usually include an assessment of drainage on the property and any potential issues that could arise from environmental conditions, like extreme weather in the area and even tree placement.

Yes, a one-story house can have a load-bearing wall. The load-bearing walls in a single-story home are usually the exterior walls. If the house has a basement with exposed walls, the arrangement of the beams can help indicate what walls are load-bearing.

Yes, walls on the top floor can be load-bearing if stacked on the floor’s foundation.

Through detailed analysis of load paths, materials, and existing damages.

The Commerce, CA homeowners’ guide to structural engineering services

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