Top-rated engineer structural pros.

Get matched with top engineer structural pros in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Engineer structural pros in Simi Valley

Peter T. Erdelyi & Associates, Inc.
2999 Overland Ave STE 103
4.52(
83
)
Approved Pro
Peter T. Erdelyi & Associates, Inc.
2999 Overland Ave STE 103
4.52(
83
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
69 local quotes requested

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

"Quoted one price and kept asking for more money. They only came to the house once, and any changes I had to make (because they didn't have all the information) they changed me more."

Dominic M on July 2023

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

"Quoted one price and kept asking for more money. They only came to the house once, and any changes I had to make (because they didn't have all the information) they changed me more."

Dominic M on July 2023


Avatar for RCS Engineering Services
RCS Engineering Services
2335 East Colorado Boulebard, Unit 115-170
5.00(
3
)
Approved Pro
RCS Engineering Services
2335 East Colorado Boulebard, Unit 115-170
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


J Brent Hoerner Structural Engineering, Inc.
24024 Via Candela
4.49(
94
)
Approved Pro
J Brent Hoerner Structural Engineering, Inc.
24024 Via Candela
4.49(
94
)
Approved Pro
Customers say: Quick response
42 years of experience
Free onsite estimate

For over 25 years J. Brent Hoerner has provided quality structural engineering in southern California.. He enjoys using his expertise, experience, and creativity on all types of structural engineering projects. Don't worry if you think your project is too small, too big, too complicated, or too unusual. Brent likes to help people solve their problems, accomplish their goals and achieve their dreams.

"Very trust worthy"

Amanda l on July 2023

For over 25 years J. Brent Hoerner has provided quality structural engineering in southern California.. He enjoys using his expertise, experience, and creativity on all types of structural engineering projects. Don't worry if you think your project is too small, too big, too complicated, or too unusual. Brent likes to help people solve their problems, accomplish their goals and achieve their dreams.

"Very trust worthy"

Amanda l on July 2023


Avatar for Standley Structural Design
Standley Structural Design
18757 Burbank Blvd Unit 109
5.00(
5
)
Approved Pro
Standley Structural Design
18757 Burbank Blvd Unit 109
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 local quotes requested

Welcome to Standley Structural Design, proudly servicing Sherman Oaks, and the surrounding areas. Our goal is to complete your project to perfection. We look forward to building long lasting relationships with the customers that we serve. We look forward to serving you. Call us today! You will not be disappointed. We are a Los Angeles based structural design team of qualified and licensed Civil Engineers. We can assist you in effective assessment and design whether your home is in need of repairs, you are looking to renovate or build an addition, or you are looking to build a new home from scratch. We serve the entire state of California. We know the most important thing we can do is design efficient, easy to construct systems, and get them back to you in a workable amount of time. We pride ourselves in thorough and effective designs gotten back to you in time to not delay your projects.

"punctual . professional and pleasant."

ELLEY L on February 2021

Welcome to Standley Structural Design, proudly servicing Sherman Oaks, and the surrounding areas. Our goal is to complete your project to perfection. We look forward to building long lasting relationships with the customers that we serve. We look forward to serving you. Call us today! You will not be disappointed. We are a Los Angeles based structural design team of qualified and licensed Civil Engineers. We can assist you in effective assessment and design whether your home is in need of repairs, you are looking to renovate or build an addition, or you are looking to build a new home from scratch. We serve the entire state of California. We know the most important thing we can do is design efficient, easy to construct systems, and get them back to you in a workable amount of time. We pride ourselves in thorough and effective designs gotten back to you in time to not delay your projects.

"punctual . professional and pleasant."

ELLEY L on February 2021


Avatar for Pac Sands Corp
Pac Sands Corp
1309 Coffeen Ave STE !200
5.00(
2
)
Approved Pro
Pac Sands Corp
1309 Coffeen Ave STE !200
5.00(
2
)
Approved Pro
8 years of experience
Free onsite estimate

We specialize in home designs, architectural plans and structural drawings 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!

"Hired Pacific Sands after we lost our home in the Eaton Fires in Altadena. We were very happy with their team and the designs they finished for us. Their permitting team was amazing too, so happy they were able to help with that part of the process. too. "

Anna H on May 2025

We specialize in home designs, architectural plans and structural drawings 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!

"Hired Pacific Sands after we lost our home in the Eaton Fires in Altadena. We were very happy with their team and the designs they finished for us. Their permitting team was amazing too, so happy they were able to help with that part of the process. too. "

Anna H on May 2025


Avatar for LAVISH GARDENS LANDSCAPE
LAVISH GARDENS LANDSCAPE
5515 Pacific Street
4.39(
241
)
Approved Pro
LAVISH GARDENS LANDSCAPE
5515 Pacific Street
4.39(
241
)
Approved Pro
Customers say: Quality work
1575 local quotes requested
17 years of experience

With over 35 years’ experience, we believe that consistent communication is the key to a successful landscape project. That is why the same salesperson with whom you meet as your initial contact will act as your project coordinator as well. He/she will be with you from the first meeting to the end of your construction project ensuring your trust, confidence, and satisfaction. Let Lavish Gardens Landscape design and install a professional custom landscape to allow you to escape everyday pressures and stress; a retreat made just for you! Whether you want to create a resort right at home for your family and friends to play and relax or a simple place to call your own; we will create a landscape with quality, integrity, and beauty for you to enjoy for years to come.

"From start to finish, it was a great experience working with the team from Lavish Gardens. Robert really listened to me and partnered with me to create my vision for my front yard. Ruben and his crew took it from there. They were on time and so helpful. They kept things cleaned up too! The communication has been great and everyone met their commitments. How refreshing!"

Lori S on June 2025

With over 35 years’ experience, we believe that consistent communication is the key to a successful landscape project. That is why the same salesperson with whom you meet as your initial contact will act as your project coordinator as well. He/she will be with you from the first meeting to the end of your construction project ensuring your trust, confidence, and satisfaction. Let Lavish Gardens Landscape design and install a professional custom landscape to allow you to escape everyday pressures and stress; a retreat made just for you! Whether you want to create a resort right at home for your family and friends to play and relax or a simple place to call your own; we will create a landscape with quality, integrity, and beauty for you to enjoy for years to come.

"From start to finish, it was a great experience working with the team from Lavish Gardens. Robert really listened to me and partnered with me to create my vision for my front yard. Ruben and his crew took it from there. They were on time and so helpful. They kept things cleaned up too! The communication has been great and everyone met their commitments. How refreshing!"

Lori S on June 2025


Avatar for Wilson Greens Turf
Wilson Greens Turf
7171 Warner Ave. Suite #386
5.00(
2
)
Approved Pro
Wilson Greens Turf
7171 Warner Ave. Suite #386
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
823 local quotes requested

Welcome to Wilson Greens Synthetic Grass Experts! I am Joe Wilson, the proud owner since 2014. I personally have over 15 years of experience installing artificial grass, putting greens, hardscapes, fencing and more in both residential and commercial spaces. My carefully hand-selected crew and I have a combined total of over 40 years experience working hard to make our client's dream landscapes a reality. We are a family-owned and operated business who strive to provide excellent customer service, reasonable pricing, quality installations, and beautiful eye-catching designs. We look forward to working with you!

"I was very satisfied with the work."

WALTER A on April 2025

Welcome to Wilson Greens Synthetic Grass Experts! I am Joe Wilson, the proud owner since 2014. I personally have over 15 years of experience installing artificial grass, putting greens, hardscapes, fencing and more in both residential and commercial spaces. My carefully hand-selected crew and I have a combined total of over 40 years experience working hard to make our client's dream landscapes a reality. We are a family-owned and operated business who strive to provide excellent customer service, reasonable pricing, quality installations, and beautiful eye-catching designs. We look forward to working with you!

"I was very satisfied with the work."

WALTER A on April 2025


Avatar for Cornejo LANSCAPING
Cornejo LANSCAPING
410 W Micheltorena St
5.00(
9
)
Approved Pro
Cornejo LANSCAPING
410 W Micheltorena St
5.00(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
319 local quotes requested

landscaping, Artificial turf,patty green ,landscaping lights ,pavers,flag stone, slaps, wood fance, irrigation, timers,grading machine, retaining wall.mantenance ,vinyl and wood flooring , pergolas , sprinkler. p

"Excellent! Professional, quick, quality work!"

Sergy c on April 2025

landscaping, Artificial turf,patty green ,landscaping lights ,pavers,flag stone, slaps, wood fance, irrigation, timers,grading machine, retaining wall.mantenance ,vinyl and wood flooring , pergolas , sprinkler. p

"Excellent! Professional, quick, quality work!"

Sergy c on April 2025


Avatar for G&L Design Building & Landscape Inc
G&L Design Building & Landscape Inc
6520 Platt Ave #556
4.30(
161
)
Approved Pro
G&L Design Building & Landscape Inc
6520 Platt Ave #556
4.30(
161
)
Approved Pro
Customers say: Super punctual
1023 local quotes requested
18 years of experience

G&L Design Building and Landscape Inc is a licensed general contractor builder who specializes in the outdoors construction, pool and spa construction , deck, retaining wall, gate and fence ,hardscape, landscape, design & build company that has been servicing residential and commercial clients in the Los Angeles and Ventura counties. Although unique and functional design is our passion, outstanding customer service is our number one priority. Our talented landscape designers will listen to your needs and then use their expertise to develop an architectural quality landscape design that fits your personality and lifestyle. Members with the CLCA and Angelus pavers.

"I recently hired G&L Design Building and Landscape for a major outdoor project, and I couldn't be more thrilled with the results! From start to finish, the experience was seamless, professional, and truly impressive. Dror, the owner, is a visionary. His attention to detail, creativity, and commitment to quality were evident in every phase of the project. He took the time to understand my vision and brought it to life even better than I imagined. His team built a stunning retaining wall, installed lush, vibrant turf, and laid down beautiful interlocking pavers that completely transformed the space. On top of that, they planted an incredible selection of trees and flowers that added the perfect finishing touch—absolutely breathtaking! The crew was punctual, respectful, and worked with great care and precision. It’s rare to find a team so dedicated and passionate about their craft. If you're looking for top-tier landscaping and design, look no further than G&L Design. Dror and his team are the real deal—professional, talented, and a pleasure to work with. Highly recommended!"

iuval h on June 2025

G&L Design Building and Landscape Inc is a licensed general contractor builder who specializes in the outdoors construction, pool and spa construction , deck, retaining wall, gate and fence ,hardscape, landscape, design & build company that has been servicing residential and commercial clients in the Los Angeles and Ventura counties. Although unique and functional design is our passion, outstanding customer service is our number one priority. Our talented landscape designers will listen to your needs and then use their expertise to develop an architectural quality landscape design that fits your personality and lifestyle. Members with the CLCA and Angelus pavers.

"I recently hired G&L Design Building and Landscape for a major outdoor project, and I couldn't be more thrilled with the results! From start to finish, the experience was seamless, professional, and truly impressive. Dror, the owner, is a visionary. His attention to detail, creativity, and commitment to quality were evident in every phase of the project. He took the time to understand my vision and brought it to life even better than I imagined. His team built a stunning retaining wall, installed lush, vibrant turf, and laid down beautiful interlocking pavers that completely transformed the space. On top of that, they planted an incredible selection of trees and flowers that added the perfect finishing touch—absolutely breathtaking! The crew was punctual, respectful, and worked with great care and precision. It’s rare to find a team so dedicated and passionate about their craft. If you're looking for top-tier landscaping and design, look no further than G&L Design. Dror and his team are the real deal—professional, talented, and a pleasure to work with. Highly recommended!"

iuval h on June 2025


Avatar for Alpha Structural, Inc.
Alpha Structural, Inc.
8334 Foothill Blvd
4.67(
231
)
Approved Pro
Alpha Structural, Inc.
8334 Foothill Blvd
4.67(
231
)
Approved Pro
Customers say: Super punctual
457 local quotes requested
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.

"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

...
Showing 1-10 of 953

FAQs for engineer structural projects in Simi Valley, CA

You should replace floor joists as soon as you see clear signs of structural trouble—sagging floors, wide wall cracks, uneven door frames, wet or rotting wood, persistent squeaks, or windows that no longer latch. Tilted or sinking supports in the crawl space are another red flag. If you notice any of these signs, call a pro right away to keep your home’s structure safe.

If the joists are exposed from below, a pro can swap them out without touching the finished floor above. In an unfinished basement or crawl space, you’ll often see the joists and can easily reach them. When insulation, subflooring, or finished flooring blocks access, the crew must remove these materials before repairs can begin.

Sistering allows a pro to reinforce a cracked or undersized joist without tearing up the entire floor. The contractor slowly raises the frame, then fastens a new joist snugly against the damaged one to share the load. When done correctly, sistering restores full structural strength and keeps the floor level without the cost of a complete replacement.

Floor joists installed correctly in a stable environment can last for 100 years or more, often outlasting the house itself. However, termite damage, moisture, leaks, and other problems can significantly reduce a floor's lifespan. For instance, if the floor is exposed to consistent moisture, you'll likely need to replace the joists every 20 to 30 years.

Homeowners' insurance covers floor joist damage resulting from sudden and accidental events, such as fire, windstorm, or water damage from a burst pipe. It will not cover repairs resulting from gradual deterioration, poor maintenance, or termite infestations. Review your insurance policy and consult your provider to verify the conditions that guarantee full coverage. Doing so ensures you are fully aware of your responsibilities and can plan your repair work with complete confidence.

Floor joists are essential structural components that provide a stable foundation for your home. They directly transfer the weight of floors, furniture, and occupants to the foundation, ensuring stability and a safe living environment. Without these robust beams, the structure would face compromised load distribution, leading to potential safety hazards and costly repairs. Proper installation and maintenance are crucial for long-term durability and safety.

The Simi Valley, CA homeowners’ guide to engineer structurals
From average costs to expert advice, get all the answers you need to get your job done.
draftsperson working on house plans in an office
Jun 22, 2025
Jun 22, 2025
Budget for blueprint costs based on factors such as drafting fees, printing costs, square footage, rates for pros, alterations, blueprint type, and more.
Cozy house interior with a wooden floor
Jun 17, 2025
Jun 17, 2025
Explore how much it costs to replace floor joists based on factors such as the extent of damage, number of boards, and local labor rates.
Engineer and homeowner inspecting house foundation
Jun 11, 2025
Jun 11, 2025
Budget for structural engineer costs based on factors such as report type, inspection type, location, project scope, fee structure, and more.
Share project details to get started.