Top-rated structural engineers.

Best structural engineers near San Marino, CA

Enter your zip and get matched with up to 5 pros

Need a pro for your structural engineering project in San Marino, CA?

Select your specific project to find the pro for you.

Top-Rated Structural engineers in San Marino - Updated Nov 2026

Avatar for Alpha Structural, Inc.
Alpha Structural, Inc.
4.6(
241
)
Engineer - Structural

Serving San Marino, CA and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

"Excellent experience again with Alpha Structural. Charlie Rosenkranz came to see the 3-story apartment building in West Hollywood. We discussed what the soft story retrofit plans will likely include. He's knowledgeable and experienced. We appreciated his professional no-pressure approach and answering our questions. Alpha performed an exploratory investigation of the support structure, as architectural plans were not available. They engineered the plans with city approval. They then consulted with us and provided the approved THP (Tenant Habitability Plan) paperwork. Production Manager Dave Schlaich and Job Supervisor Seth Price met me before construction. Dave went over the approved plans and explained the work that would be performed, and the purpose. They both answered all my questions. Lawrence and Antonio were the main work team. They were very pleasant and answered all our questions. Both had great explanations with Lawrence being very detailed. Seth provided timely progress reports by phone and text. He answered all questions, and provided contacts for automatic shut-off gas valves and stucco work. Despite Covid-19, they scheduled and passed inspections, and completed the work in under a month. We've seen projects by other companies stuck in limbo for months with no progress, so we chose Alpha to avoid complications. They removed all debris, and left the property clean. The tenants and neighbors had no complaints. Daniel Aparicio also explained various issues. Communication with everyone, including the office staff, was excellent. We're very pleased with this experience."
Basement Addition
Basement Expansion
Caisson Supported Retaining Wall
Cantilevered Deck Design Build
Deck Expansion and Slope Failure with Retaining Wall

+323

Response time10 hrs
Response rate100%
11 neighbors recently requested a quote
Avatar for PETER T ERDELYI & ASSOCIATES INC
PETER T ERDELYI & ASSOCIATES INC
4.8(
12
)
Draftsperson/CADDArchitect

Serving San Marino, CA and surrounding areas

Approved

In business since 1976

Warranties offered

Credit card accepted

"The project went great. Peter is very professional, super knowledgeable, responsive and timely. The plans were done on time and there were no problems with the city review. They answered the questions the contractor had during the construction. Couldn't be happier with the whole process. I thought it would be more difficult than it was. Thanks to Peter and his team we feel very safe with the new addition. We are planning on putting a second story on our house (when we can afford it) and we will absolutely use Peter.
"
Beverly Hills
Pacific Palisades
Culver City
1 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for RCS Engineering Services
RCS Engineering Services
5.0(
3
)
ArchitectEngineer - Structural

Serving San Marino, CA and surrounding areas

Approved

In business since 2018

Offers commercial services

Customers say: Quick response

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.

Slab On Grade - Carport
Foundation Underpinning
Existing Wall
Existing Wall/ Form Work
FOundation Underpinning

+15

Response time8 hrs
Recommended by100%of homeowners
Avatar for AAA Engineering Design
AAA Engineering Design
4.1(
9
)
Engineer - Structural

Serving San Marino, CA and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

With over two decades of experience, we provide structural engineering services for residential and commercial projects throughout California. We specialize in timber, steel, concrete, and CMU structural design for public and private sector developments. Our approach focuses on safety, constructability, cost efficiency, and full code compliance.\nOur experience includes shopping centers, office buildings, retail spaces, tenant improvements, industrial facilities, new homes, additions, remodels, ADUs, retaining walls, foundation systems, seismic retrofits, and structural upgrades. We work closely with owners, architects, contractors, and local agencies to deliver practical engineering solutions with fast turnaround times and reliable support from design through permitting and construction. Customer satisfaction, clear communication, and dependable service are the foundation of our business. Contact us today to discuss your project.

3 Story 4 Condos
3 Story 4 Condos
3 Story 4 Condos
3 Story 4 Condos
3 Story 4 Condos

+5

25 neighbors recently requested a quote
Recommended by66%of homeowners
Peter T. Erdelyi & Associates, Inc.
3.9(
115
)
Engineer - Structural

Serving San Marino, CA and surrounding areas

Approved

In business since 1976

Free estimates

Warranties offered

"I couldn't find a structural engineer to look at my drawings and provide good engineering services until I called Peter. He was willing to look at the project even though there were still questions about the build to be answered."
 1
 PIC 1
 Picture 2
2
 Picture 3

+11

Response time2 days
123 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Alpha Omega
Alpha Omega
4.0(
116
)
Engineer - Structural

Serving San Marino, CA and surrounding areas

Approved

In business since 2003

Free estimates

Small jobs welcome

"If you need a Structural Engineer you call Ehab at Alpha Omega hands down! He is knowledgeable, professional and easy to do business with. Thank you"
Plot Plan for Auto Dealer
Auto Body Shop
Response time10 hrs
Response rate86%
65 neighbors recently requested a quote
Avatar for JZ Structural, Inc.
JZ Structural, Inc.
5.0(
3
)
Engineer - Structural

Serving San Marino, CA and surrounding areas

Approved

In business since 2010

Free estimates

Small jobs welcome

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.

ADU
ADU
ADU
ADU
ADU

+38

Response time2 days
Recommended by50%of homeowners
Avatar for Eagle View Remodeling
Eagle View Remodeling
4.7(
88
)
ArchitectDraftsperson/CADD

Serving San Marino, CA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1989

Free estimates

Emergency services offered

"I was a little nervous and excited when starting the process for my kitchen remodeling project. Luckily after several inquires to many companies, I found the right fit. Amir was very attentive and provided great communication through the process. He would visit my home and make sure everything was running accordingly. My kitchen now looks great and very detailed. I can’t wait to host my next gathering with friends and show off my new kitchen."
New Constraction
New Constraction
New Constraction
New Constraction
New Constraction

+145

Response time8 hrs
Response rate99%
65 neighbors recently requested a quote
Avatar for Design 1 Studio
Design 1 Studio
4.9(
74
)
Draftsperson/CADD

Serving San Marino, CA and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"We needed a master bedroom addition and a full remodel of our existing kitchen and two bathrooms. Design 1 Studio handled all of it as one project. The addition was designed to match the existing roofline and exterior perfectly. The interior layouts are functional and beautiful. Our contractor complimented the level of detail in the plans multiple times during the build. We get compliments from every visitor now."
Different Projects
Different Projects
Different Projects
Different Projects
ADUs

+20

Response time1 day
3 neighbors recently requested a quote
Recommended by24%of homeowners
...
Showing 1-10 of 271
Structural Engineering FAQs, answered by experts

It's safe to assume that all exterior walls are load-bearing, or at least have load-bearing characteristics. Some older homes feature porches or bump-outs that don't rest on the home's foundation. However, they still must carry the weight of the roof section they support. Walls containing floor-to-ceiling glass or other non-structural elements must use post and beam configurations to meet load-bearing criteria.

Yes, water damage can affect your walls' structural integrity. If the water or moisture sits on the walls for an extended period, it can weaken the drywall, plaster, wood framing, and other materials supporting the wall. That's why it's critical to dry out the area as soon as you notice it.

Structural engineers draw structural plans, which include detailed drawings of the structural components of a home only. Complete house plans will require additional work from an architect or draftsperson, whose drawings will take the structural drawings into account. They’ll also include more details about the finishing materials and layout of a home, including everything from roofing and flooring materials to the position of furniture, light fixtures, switches, and plumbing fixtures.

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.

No, beams are the primary load-bearers for flooring or roofing systems, and they distribute the weight of the structure to your foundational supports, while joists bear far less weight and distribute their loads to the beams. Beams are usually thicker and longer, and they have support posts or foundation walls beneath them for support.

The San Marino, CA homeowners’ guide to structural engineering services

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