The structural engineering design of extensions to existing houses is one of our main areas of work.  It often necessitates some structural alterations to the existing house.

We design in all common structural materials i.e. timber, steel, masonry and concrete.  Examples of the type of structural elements that we design are:

  • Timber – roofs, floors, ceilings, frames and connections
  • Steelwork – beams, columns, frames and connections
  • Masonry – walls, piers and retaining walls
  • Concrete – beams, columns, floors and retaining walls
  • Foundations – strip and trench fill, rafts and ground beams supported on piles

We produce comprehensive structural engineering calculations for checking by Building Control and clear design details for use by your contractor.  We pride ourselves on producing thorough and well considered designs which minimise problems and delays during construction and therefore represent excellent value for money.

If appointed we will we work closely with your Architect or other designer to provide a structural engineering solution that is sympathetic to your budget and requirements as well as the existing building.  If you do not currently have an Architect or other designer we can refer you to several that we work with on a regular basis for your consideration.


If you have already commissioned an Architect or other designer please send us a copy of their drawings.  We will then provide you with a detailed fixed price quotation for the structural engineering design, provided that the drawings contain sufficient information for us to be able to quantify the work needed.

Alternatively, if you just need some advice on the engineering feasibility of your proposal and are not yet ready to commission detailed design work, we can visit you to look at the building, discuss your proposals, assess their engineering feasibility and give verbal advice.  Our fee for this service is £180 plus VAT and includes up to 3 hours of our time, including time spent travelling from our offices near Ashford, Kent .


We specialise in engineering design and a range of surveying services.  We have knowledge of many other areas of construction but are not experts in them.  If you need advice in any of the following areas you will need to seek advice from an appropriate professional.  Please refer to us if you need assistance as we may have contacts we can refer you to.

  • architecture and all non-structural aspects of the Building Regulations
  • geotechnical engineering and ground investigations
  • the Party Wall Act
  • general building surveys for house sale/purchase
  • asbestos
  • cost estimating


Please phone Graham on 07568 168319 or email him at graham@epsdesign.co.uk if you wish to discuss engaging us for either of the above services.