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TRUSTED BY CASTAIC, CA HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon13
    Verified structural engineering services reviews

Find Structural engineers in Castaic

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

Serving Castaic, 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%
16 neighbors recently requested a quote
Avatar for PETER T ERDELYI & ASSOCIATES INC
PETER T ERDELYI & ASSOCIATES INC
4.8(
12
)
ArchitectArchitect - For BusinessDraftsperson/CADD

Serving Castaic, CA and surrounding areas

Approved

In business since 1976

Warranties offered

Credit card accepted

"The work Erdelyi associates did is great, but communication and timeliness were lacking. I didn’t have a consistent point of contact throughout the project - it just seems my project was handed off from one person to the next with no continuity and I had to proactively reach out for updates."
Beverly Hills
Pacific Palisades
Culver City
Recommended by87%of homeowners
Avatar for ESL Designs
ESL Designs
4.7(
33
)
ArchitectDraftsperson/CADD

Serving Castaic, CA and surrounding areas

Approved

In business since 2018

Free estimates

Small jobs welcome

"I am a homeowner who did my own home remodeling architectural design. Even though I had architect degree, but I had never done any project in Los Angeles. As everybody knows, Building and Safety has tons of regulations to follow, which made the permitting process especially difficult. I was so lucky to work with David, my structural engineer, who is very sharp, knowledgeable and hardworking. Not only did he deliver his structural design on time but also he guided me through with all details of my architectural plan. He is very responsive and generous about sharing his knowledge. It was such a surprise when David got me the permit over the counter from the city office with only one attempt, which expedited my remodeling project timeline for at least two months. Definitely recommended!!"
3D Design for a Remodel
New Build
Kitchen Remodel
Bedroom
Bedroom

+23

Response time1 day
Response rate100%
6 neighbors recently requested a quote
Avatar for AAA Engineering Design
AAA Engineering Design
4.1(
9
)
Engineer - Structural

Serving Castaic, 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

31 neighbors recently requested a quote
Recommended by66%of homeowners
AAA Engineering Design
4.1(
9
)
Engineer - Structural

Serving Castaic, CA and surrounding areas

Approved

In business since 2007

Free estimates

Small jobs welcome

"I had the pleasure of working with Aws on a recent project and was thoroughly impressed by his professionalism and efficiency. He delivered a clean, straightforward structural design that met all the necessary requirements without unnecessary complexity. Aws was fast, reliable, and highly communicative throughout the process, making coordination smooth and strass-free. On top of that, the pricing was very reasonable. I highly recommend Aws and his firm for any structural engineering needs. They offer a great combination of expertise, responsiveness, and value."
Foundation Plan
Roof Framing Plan
Response time3 hrs
Recommended by66%of homeowners
Avatar for Saylor Design Studio
Saylor Design Studio
5.0(
5
)
ArchitectDraftsperson/CADD

Serving Castaic, CA and surrounding areas

Approved

In business since 1990

Free estimates

Small jobs welcome

At Saylor Design Studio, I uphold a standard characterized by fairness, honesty, and accountability. My design approach involves working closely with clients to understand their unique needs, preferences, and lifestyle, ensuring that every design reflects their individuality. As a Custom Home Designer and a member of the American Institute of Building Design, I specialize in residential designs for additions, remodels, and new homes. I have over three decades of experience and have successfully designed over 700 projects. Additionally, I have an extensive background as a Set Designer and am a member of the Art Directors Guild and have completed over 70 film and television projects. My knowledge of construction methods, materials, and building codes allows me to provide accurate and detailed construction documents for contractors and consultants. This gives me a distinctive design perspective unmatched by others.

Custom Hillside Home - Front and Rear Elevations
Plans
Custom Hillside Home - Sections
Elevation
Framing Plans

+12

Response time8 hrs
Response rate92%
Recommended by100%of homeowners
CCD - Engineering and Design
3.4(
18
)
Engineer - Structural

Serving Castaic, CA and surrounding areas

Approved

In business since 1986

Free estimates

Offers commercial services

"I hired CCD to help me permit a structure that I built (Rooftop Deck) and then had a neighbor complain about, leading to lots of trouble and compliance issues. After getting some quotes (that were often 2-3 times what I ended up paying) I found CCD. Mike told me they have never failed to permit a single unpermitted structure... and 12 months later mine is another one of their success stories. I had them draw up the plans and the city approved his blueprints without a single correction which I understand is rare in Santa Monica. I am very satisfied with everything CCD did for me & would not hesitate to hire them again."
Response time2 days
4 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for CODAspaces
CODAspaces
5.0(
6
)
Architect - For BusinessDraftsperson/CADD

Serving Castaic, CA and surrounding areas

Approved

In business since 2007

Free estimates

Small jobs welcome

I am a licensed architect who has specialized experience with tenant improvement projects, particularly offices and restaurants. I have also designed residential projects, from ADUs and single family homes to multi-family. I have over 20 years experience and obtained my master's in architecture from Harvard.

Response time1 day
6 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Ara Hovsepyan Architecture
Ara Hovsepyan Architecture
5.0(
3
)
ArchitectArchitect - For Business

Serving Castaic, CA and surrounding areas

Approved

In business since 2021

Offers commercial services

We specialize in architectural design and documentation for residential, mixed-use, and institutional projects. \nOur studio is led by a licensed architect with professional experience across projects of varying scale\nand complexity. \nClients work directly with the architect throughout the\nprocess, with a focus on clear communication, technical accuracy, and responsiveness.

Granada Hills House
Granada Hills House
Granada Hills House
Granada Hills House
Eagle Rock Addition

+10

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Structural Engineering questions, answered by experts

The National Association of Home Builders requires repair of any foundation crack of more than one quarter of an inch, although local regulations may vary. In general, any visible crack that is growing in size, allowing water through, or that you have just noticed, is a good reason to call a structural engineer. Cracks can be a sign of a sinking foundation, so an inspection is a good idea for your peace of mind.

If you’re building new construction or adding onto your existing home, hiring a structural engineer is not only worth it but it’s probably required by your local building department. Structural engineers will ensure you aren’t making your home unsafe in the building process, which is crucial from a safety perspective but also a legal one. It’s also worth hiring a structural engineer if you’re making changes to structural components, like removing a load-bearing wall.

Yes, all states require structural engineers to carry the proper license, with specifics determined by each state. You can use Angi’s state licensing tool to confirm that the structural engineer you’re considering holds the required licensing to tackle your job. Hiring an unlicensed structural engineer will not only cause issues with permits but it could also lead to an unsafe building. The cost of a professional, licensed, and experienced engineer is well worth the investment.

Whether you’re building a new home or building an extension on your existing property, you will likely need both a structural engineer and an architect. A structural engineer will determine what loads your foundation and framing can safely handle, and an architect will draw plans according to those structural calculations to simplify the building process. You can start by contacting a structural engineer near you, as many work alongside architects and can get all of the prep work done at once.

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.

The Castaic, CA homeowners’ guide to structural engineering services

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