We offer you a smooth and a natural flow extension design that maximises the space and capitalizes on the value of your property. Our structural calculation comes in a very comprehensive, clean and high quality text and graphics in an easy understandable format with economical structural members, i.e. no overdesign.

Single storey rear extension for a Typical 3 to 4 bedroom house
Structural steel, timber roof, rafters and floor joists calculation & detailing for only £450
Click here for some typical extension sketches that we would require. We would also need elevations and sections

Double storey side & rear extension for a Typical 3 to 4 bedroom house
Structural steel, padfooting, timber roof, purlin, rafters, ceiling joists and floor joists calculation & detailing from £850
Click here for some typical extensions sketches that we would require. We would also need elevations and sections

You may also need the following services too:-
Extension detail drawing (working drawing), building regulation and specifications, £550
Extension plans and elevations using your measurements, £225

We can help you on your drawings:-
If you give us your floor sketches, see samples,+ Pictures of the front and the rear of the property we would be able to do the CAD drawing for you and design the extension together with the elevations and the sections.

If you are local to us, we would also be able to provide you with further service of:-
Site survey and measurement £275

Please Note: Payments can be made by credit cards.
Our structural calculation services are available to customers throughout Great Britain (UK).