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Find Structural engineers in Altadena

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

Serving Altadena, CA and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

"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!!"
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%
20 neighbors recently requested a quote
Avatar for Level Engineering Los Angeles, CA (Downtown)
Level Engineering Los Angeles, CA (Downtown)
4.4(
293
)
Engineer - Structural

Serving Altadena, CA and surrounding areas

Approved

In business since 2015

Credit card accepted

Offers commercial services

"Level Engineering provides professional and upfront services that has really added value to my business. The engineers are knowledgeable, friendly and proficient. I recommend that all my homeowners use their services prior to any structural work knowing that they will provide quality information that they will stand behind."
Recommended by93%of homeowners
AK Structural Engineering Inc.
5.0(
10
)
Engineer - StructuralArchitect

Serving Altadena, CA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"AK engineering did an excellent job in structural design of our custom modern house. Amir is very professional and responsive and worked closely with our architect and us. He made himself available for job site visits and questions and his design was efficient and cost effective."
7 neighbors recently requested a quote
Avatar for PETER T ERDELYI & ASSOCIATES INC
PETER T ERDELYI & ASSOCIATES INC
4.8(
12
)
Draftsperson/CADDArchitectArchitect - For Business

Serving Altadena, 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
3 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for RCS Engineering Services
RCS Engineering Services
5.0(
3
)
ArchitectEngineer - Structural

Serving Altadena, 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 ESL Designs
ESL Designs
4.7(
33
)
ArchitectDraftsperson/CADD

Serving Altadena, CA and surrounding areas

Approved

In business since 2018

Free estimates

Small jobs welcome

"Eran quickly responded to my inquiry regarding a load bearing structure of my home. He sent his structural engineer to determine if the structure was a load bearing problem. The engineer was able to determine 100% that it was not a load bearing structure. I would definitely recommend them to anyone who needs structural engineering solutions."
3D Design for a Remodel
New Build
Kitchen Remodel
Bedroom
Bedroom

+23

Response time1 day
Response rate100%
7 neighbors recently requested a quote
Peter T. Erdelyi & Associates, Inc.
3.9(
115
)
Engineer - Structural

Serving Altadena, 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
106 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for AAA Engineering Design
AAA Engineering Design
4.1(
9
)
Engineer - Structural

Serving Altadena, 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

23 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for A.Design
A.Design
5.0(
20
)
Architect

Serving Altadena, CA and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"I recently worked with Anila and Andi on my home project, and I'm thrilled with their service and design skills. They were professional and attentive throughout. Their design ideas turned my house into a beautiful and functional space. What I appreciated most was their willingness to listen and collaborate. They managed the project efficiently and stayed within budget. I highly recommend Anila and Andi for their exceptional work and great service. Thank you for making my home amazing!"
Front
Kitchen
Dining
Living Room
Kitchen

+464

Response time1 day
Recommended by81%of homeowners
Avatar for Alpha Omega
Alpha Omega
4.0(
116
)
Engineer - Structural

Serving Altadena, 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%
64 neighbors recently requested a quote
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Showing 1-10 of 261
Structural Engineering questions, answered by experts

In many areas, advice from a structural engineer or an architect will be required by your building department before you can remove a wall, but even if it’s not necessary, it’s a good idea. Accidentally removing a load-bearing wall—even if a general contractor advises that it’s safe—can cause major structural damage, putting you and your family at risk and potentially costing thousands or tens of thousands of dollars in property damage.

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.

In framing, studs are placed at 16-inch intervals to coincide with the typical spacing of wall materials such as drywall or plywood. This spacing is called "on-center" and is necessary for maintaining structural stability and efficient use of materials. The 16-inch spacing also helps to distribute the weight evenly across the building's structure. For those looking to cut material costs and improve energy efficiency, 24-inch stud spacing can be employed through a method called "advanced framing". This requires careful planning and adherence to local building codes to ensure structural integrity.

Costs depend on material choices, labor, and the extent of structural modifications.

According to the Earthquake Country Alliance—a public and private alliance in California that works to improve earthquake and tsunami readiness—reports that unreinforced masonry, such as stone, bricks, and hollow clay tiles, is more susceptible to earthquake damage. The mortar between bricks isn’t as stable as other building materials and methods.

The Altadena, CA homeowners’ guide to structural engineering services

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