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

Serving Placentia, 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

+315

Response time10 hrs
Response rate96%
23 neighbors recently requested a quote
New Beginning Engineering
4.6(
19
)

Serving Placentia, CA and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

"I hired Beginnings Engineering for a structural project on my 45-year-old home and worked with Jonathon Sipe and Nada. I spoke with several other firms in Orange County first. Most of the alternative proposals leaned toward complicated, expensive “perfect” solutions that might make sense on a new build, but didn’t feel grounded in the reality of an older home. Jonathon took a different approach: he listened to what I was trying to accomplish, worked through the constraints with me, and came back with a solution that made sense in the real world—while still being safe and code-compliant. On top of that, the experience was just… easy. Communication was straightforward, follow-through was solid, and they were genuinely friendly people to deal with. They weren’t the lowest engineering quote, but they were the lowest-cost path overall because their design avoided the unnecessary construction scope other firms recommended."
19 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Nick Engineering, Inc.
Nick Engineering, Inc.
5.0(
21
)

Serving Placentia, CA and surrounding areas

Approved

In business since 2013

Customers say: True professional

"Nick's Engineering is an exceptionally responsive engineering company. Sam actively investigated our home remodeling objectives and provided the appropriate structural path for us to pursue. Sam is a good communicator who effectively communicates with contractor and owner."
Exterior before demolition
Exterior framing
Exterior completed
Exterior completed
Exterior view

+26

Response time9 hrs
Recommended by88%of homeowners
Avatar for RCS Engineering Services
RCS Engineering Services
5.0(
3
)

Serving Placentia, 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 VC Architecture & Design
VC Architecture & Design
5.0(
6
)

Serving Placentia, CA and surrounding areas

Approved

Free estimates

Small jobs welcome

Customers say: Quick response

"Raj is an exceptional engineer with a world view centered on value and helping people. He help me through a tough problem with a roof structure issue quickly and efficiently."
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for AAA Engineering Design
AAA Engineering Design
4.1(
9
)

Serving Placentia, 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

11 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Alpha Omega
Alpha Omega
4.0(
116
)

Serving Placentia, 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%
71 neighbors recently requested a quote
Avatar for Harsini, Inc.
Harsini, Inc.
5.0(
7
)

Serving Placentia, CA and surrounding areas

Approved

In business since 2019

Offers commercial services

Customers say: Quick response

"Very knowledgeable. Iâ ve dealt with a lot of Structural Engineers. His ability to relate complex situations into easy to understand explanations clearly shows how knowledgeable he is. His background in construction adds a constructability component that is unmatched. Highly recommended. ."
Response time4 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for OConsulting
OConsulting
4.9(
5
)

Serving Placentia, CA and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Project was to analyze a structural issue and we have been very pleased. Fredy was very responsive and provided plans for our project in a timely manner."
Response time2 days
4 neighbors recently requested a quote
Recommended by100%of homeowners
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Structural Engineering questions, answered by experts

On average, 6 inches of concrete can hold around 150 pounds per square foot, but the exact weight that 6 inches of concrete can hold depends on factors such as the type of concrete, the reinforcement method, soil conditions below, and structural design. If you’re concerned about the longevity of your concrete patio, walkway, or driveway, hire a professional to help you choose an appropriate concrete thickness and reinforcement method for your needs.

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.

Indications include cracks in walls, uneven floors, and sticking doors or windows that suggest foundation movements.

Yes, walls on the top floor can be load-bearing if stacked on the floor’s foundation.

A few hours for inspection, with a detailed report following in a week.

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.