Welcome to S3DA Design


S3DA Design is an established consultancy specializing in providing architectural and structural services for residential and commercial buildings. Established in 2016, the company provides building regulations package and calculations for both residential and commercial extensions, loft conversions and new builds.

  • Over 200 Remarkable projects and counting
  • Take control of your project
  • unlock the potential of your property
  • Design safe and cost-effective space

We’ll increase the value of your property, the quality of your home and the quality of your life.

Design and Calculations


We provide our clients with a complete service from architectural design, structural calculations, detailed drawings ….

loft conversion

Loft Conversions

A room in the loft not only adds another bedroom in the property but adds value to it when you decide to sell it in the future.



Extensions provide a much-needed kitchen/diner space especially for a larger family and also to aid in entertaining guests.

Happy Clients

Don’t just take our word for it

  • Alex Norville
    Just wanted to drop you a message to say thank you for all your work on this project, it was a massive success and the client was over the moon.
    Alex Norville
  • 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 engineerĀ  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
  • Testimonial | Barry
    S3DA-Design's structural engineersĀ  provided a good efficient service and understood our requirements to undertake the working drawing package on behalf of our client. Will be using them again on forthcoming projects.
    Barry S
  • 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.
  • 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
  • Daniel Snair
    Mos at S3DA Design has serviced me well on varies different tasks, ranging from detailed drafting to engineering services. I'm sure we'll engage with S3DA for future work and would definitely recommend their services.
    Daniel Snair
  • Testimonial | Dave-S | structural & architectural services | s3da-design
    S3DA Design's structural engineer "Kale" had the needed technical experience, took the initiative in contacting me about the job and saw the project through to completion and kept it in the budget.
    Dave S

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