We stayed productive despite the pandemic.

We implement modern practices and technology to get things done for you.

[tf_numbers name='commercial']

What We Stand For

Construction design should not be an endless loop of waste, design conflicts, missed schedules and budgets. We are raising the bar of the industry.

S3DA Design provides Structural and MEP engineering services throughout California. We work closely with Architecture firms, Developers and Owners to solve complex engineering challenges.

Our Offer

Our modern approach allows us to:

- Become a single source of responsibility for design projects.
- Meet budget constraints.
- Reduce waste.
- Meet deadlines.

We have engineered over 3 million sqft & completed more than 3400 successful design and engineering projects in the commercial, residential, mix-used, educational, healthcare and industrial sectors.

Our Approach

Traditional construction design processes have remained untouched, despite advancements in technology. Most companies specialize in a certain area and leave the burden of design merging on the architect.

S3DA Design is offering a modern and holistic approach, where we take care of both structural design and MEP engineering. We are proud of having some of the best engineers in California offering structural engineering and MEP engineering services.

As featured on

Architecture At A Distance: How These Firms Are Making It Work
Tips for Architects Working At Home During COVID-19

What Our Clients Say

    S3DA Design did a great job for my team and I on a structural engineering analysis. They were very responsive and easy to work with. The work product he provided was excellent and thorough, and the project plans we submitted passed a tough Building Department review. I would highly recommend S3DA Design.
    Emily Laetz
    Locale Real Estate
  • Matt Baranowski
    I really needed someone to put together and guide the process as far as getting the architect, the engineering, all the pieces together, find the contractor to do the buildings, someone who had the experience dealing with DSA, all the submitting, all the paperwork, getting the process and the procedure going was really as big as the building itself. I most certainly would work with S3DA-Design again. My experience was great with them, I thought it was a total team approach, I thought all the individuals were great in getting the information out, the request for information to be able to build the building, the budget, the whole process just was very well orchestrated by S3DA-Design. I honestly don't know how you could have done it any better, I appreciate all of your time, help, and willingness to drop everything and come to the site, talk to me and make sure that my concerns were met, and deal with, and I thought it was a pleasure dealing with everyone in your team.
    Matt Baranowski
    Facility Manager at San Diego French-American School
  • Irina Tolmacheva
    Great team of professionals to work with! They are very knowledgeable and highly qualified in their field. The use of latest technology sets them apart from others. Highly recommend to deal with this company!
    Irina Tolmacheva
  • David Waller
    We can’t thank S3DA-Design and its structural engineer Kale highly enough for coming to our rescue when we were in desperate need of floor plans, fire safety, electrical and air conditioning plans for our new work-space. Unfortunately, our Architect had only partly completed our plans due to illness and we were thankful to have found them who provided us with what we needed with minimal turnaround. We had all our plans within 5 days!! Thank you so much again, we are extremely grateful and would highly recommend.
    David Waller
  • peter knowles
    I am very pleased to write this letter of recommendation for S3DA-Design's structural engineers. During the period of H1, 17, I have been able to closely interact with them on a complicated building package consisting of both structural & construction drawings for an important new build development. I have observed their capability to quickly grasp the concepts I have in mind and efficiently implement the same to solve the engineering needs of the project. their rational thinking and ability to address all points of clarity is impressive and so I have no hesitation in providing this recommendation for them.
    Peter Knowles
  • testimonial-marketing
    Mos Nemoy at S3DA Design is TOP NOTCH at designing home and office spaces. He actually LISTENS to what it is you need and want. What sets S3DA Design apart is that they are VISIONARY and work with you as a TEAM. I also like the ease of communication and the fine ATTENTION TO DETAIL. 5 Stars all the Way! Thank you.
    Marketing Pro
  • nVisionTEK, LLC BIM Services
    S3DA was available when I needed them, and they ensured all work was performed until my satisfaction. An issue arose, and they worked hard to resolve it.
    Dustin Hetrick
    nVisionTEK, LLC BIM Services
  • Testimonial | Shaun Holmes | structural & architectural services | s3da-design
    I was granted planning permission to construct a parking bay at the front of my property. S3DA-Design structural engineer  draw up all the plans, details and calculations, which were very detailed and professional. He kept me informed every step of the way and was very efficient in getting everything drawn up in the time I asked for. I couldn't recommend him enough.
    Shaun Holmes
  • Ricardo
    S3DA-Design's engineer has recently worked for us in a substantial house renovation project which comprised a loft conversion and a side extension on the first floor. He produced a clean and elegant structural design and provided all the necessary documentation to comply with building regulations including layouts, materials, etc. We had to deal with a difficult building control officer, and he was patient with the iterations and always quick and resolving in his responses. We are very happy with their work and would definitely work with them again. I can recommend them in the strongest terms.
  • Youssef Kubis
    I have worked with S3DA Design on several projects, mainly with Mos Nemoy (designing patios and decks). Mos was very professional and detailed oriented dealing with every single project, and it was always delivered on time.
    Youssef Kubis

Our Featured Projects

Get A Free Quote