
Get matched with top structural engineers in Placentia, CA
There are 7 highly-rated local structural engineers.
Need a pro for your structural engineering project in Placentia, CA?
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Verified Reviews for Structural Engineering pros in Placentia, CA
*The Angi rating for Structural Engineering companies in Placentia, CA 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 Placentia, CA 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 October 04, 2025
Find Structural engineers in Placentia

New Beginning Engineering
New Beginning Engineering
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

Alpha Structural, Inc.
Alpha Structural, Inc.
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.
"I worked with Alpha once before, and they assisted with a second project 2 years ago which, now finally completed, I'm able to write a review about. Alpha helped with structural plans for windows in a garden level unit in order to prepare the proposal for city approval. Alpha is a big company and it took them a little while to complete everything; however I can certainly say that the engineer and contact people were knowledgeable and thorough. The plans were approved with their help and now that the unit is permitted for occupancy, the windows are a lovely attribute to the space."
Robert N on September 2024
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.
"I worked with Alpha once before, and they assisted with a second project 2 years ago which, now finally completed, I'm able to write a review about. Alpha helped with structural plans for windows in a garden level unit in order to prepare the proposal for city approval. Alpha is a big company and it took them a little while to complete everything; however I can certainly say that the engineer and contact people were knowledgeable and thorough. The plans were approved with their help and now that the unit is permitted for occupancy, the windows are a lovely attribute to the space."
Robert N on September 2024

Harsini, Inc.
Harsini, Inc.
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

Nick Engineering, Inc.
Nick Engineering, Inc.
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

RCS Engineering Services
RCS Engineering Services
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

Alpha Omega
Alpha Omega
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.
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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

New Beginnings Engineering Inc.
New Beginnings Engineering Inc.
We are a full service engineering providing you with all that you need to submit an engineering package to your local city agency for your new home, home addition, new Accessory Dwelling Unit (ADU), 2nd Floor Additions, Renovations, Bearing Wall Removal or Evaluation, Beam Calculation for Post Removal, New Home, Retaining Walls, Home Inspection . I am a licensed structural professional engineer. We are a family owned company and believe that quality, honesty, and fair pricing are the cornerstones to a trusting working relationship between home owner and engineer. We are a Christian based engineering company and conduct our business with the upmost ethics. We operate our business on a lump price fee. With this price, you do not end up paying massive amounts of change orders, or charged for comments back from the city. Our lump sum fee includes getting you all the way to permit. Call or text me at 949-397-5191
"They came, said they would send me an estimate and its been a month and I have not received anything."
Quynh O on December 2024
We are a full service engineering providing you with all that you need to submit an engineering package to your local city agency for your new home, home addition, new Accessory Dwelling Unit (ADU), 2nd Floor Additions, Renovations, Bearing Wall Removal or Evaluation, Beam Calculation for Post Removal, New Home, Retaining Walls, Home Inspection . I am a licensed structural professional engineer. We are a family owned company and believe that quality, honesty, and fair pricing are the cornerstones to a trusting working relationship between home owner and engineer. We are a Christian based engineering company and conduct our business with the upmost ethics. We operate our business on a lump price fee. With this price, you do not end up paying massive amounts of change orders, or charged for comments back from the city. Our lump sum fee includes getting you all the way to permit. Call or text me at 949-397-5191
"They came, said they would send me an estimate and its been a month and I have not received anything."
Quynh O on December 2024
Masizo Restorations
Masizo Restorations
We offer a variety of remodeling services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!
"I had a remodel project in my kitchen and it turned out great, I could not ask for a better contractor to perform the scope of work at hand! Steve was very communicative and performed with precise accuracy! I highly recommend Masizo Development if you’re looking to remodel your home!"
Nicole B on December 2024
We offer a variety of remodeling services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!
"I had a remodel project in my kitchen and it turned out great, I could not ask for a better contractor to perform the scope of work at hand! Steve was very communicative and performed with precise accuracy! I highly recommend Masizo Development if you’re looking to remodel your home!"
Nicole B on December 2024
Ruiz Development & Engineering
Ruiz Development & Engineering
Here at Ruiz Development & Engineering we offer a wide variety of construction services. Everything is dedicated to your specific needs to make your home look like a dream.
Here at Ruiz Development & Engineering we offer a wide variety of construction services. Everything is dedicated to your specific needs to make your home look like a dream.
Calebs Imagination
Calebs Imagination
Building or remodeling your dream home. Whatever your imagination envisions we can make it a reality. We have 25 years of experience with pulling permits, designing, drawing schematics/blueprints, earthwork, concrete, stucco, framing, roofing, Plumbing, electrical, HVAC, windows, drywall, insulation and more!
Building or remodeling your dream home. Whatever your imagination envisions we can make it a reality. We have 25 years of experience with pulling permits, designing, drawing schematics/blueprints, earthwork, concrete, stucco, framing, roofing, Plumbing, electrical, HVAC, windows, drywall, insulation and more!
The Placentia, CA homeowners’ guide to structural engineering services
From average costs to expert advice, get all the answers you need to get your job done.
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.
The cost of a structural engineer is easily justifiable given the value they bring to the table. Use this guide to see what hiring your professional will total.
Looking to expand your ceiling and send claustrophobia running for the hills? This guide covers the cost to vault a ceiling and factors that impact estimates.
The right ceiling joist spacing will help support your ceiling and prevent sagging, but there are a number of factors to consider. This guide can help.
Steel beams are critical framing components that support your house. Learn about steel beam sizes and how to determine what size steel beam you need.
Structural steel and wood beams ensure your house is structurally sound. Learn the difference between steel and wood beams and how to choose the right one.
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