What helps an extension run smoother
Old and new read together
We look at the existing house and the extension as a single load-bearing system.
Layout issues tackled early
Wide openings and awkward support points are easier to sort before site work.
Details builders can use
Calculations and structural notes connect clearly with the extension plans.
Extension design that respects the house you have
An extension is not just a new box on the back or side of a home. It changes how the existing house carries load, where openings can go and how new foundations, beams, walls and roof members connect back into older construction. We assess the retained building and the proposed layout together so the structural route makes sense as one scheme.
That matters when plans look generous on paper but support positions, opening widths or ground conditions say otherwise. CMQUEBRAL Consulting Ltd helps pin down a workable answer before the build gets awkward.
From layout choices to buildable details
The final structural arrangement depends on more than floor area. Opening width, number of storeys, roof form, retained walls and what is known about the ground can all shift the design. From Burnham, we coordinate our work with the architectural plans so the builder gets calculations and structural details that tie back to the extension layout. That means fewer surprises when new and existing parts of the house finally have to behave as one.
Frequently asked questions
Do you assess the existing house as well as the extension?
Yes. The existing house is a key part of the job because the new structure has to connect into it properly. We look at where loads are already travelling, what walls or supports are being altered and how the extension can be carried safely without ignoring the retained building.
What affects the structural design of an extension?
Opening width, number of storeys, roof shape, foundation conditions and the position of retained walls all affect the structural scheme. Even small layout changes can alter where support is needed, which is why early coordination with the plans makes such a difference.
Can extension calculations follow architectural drawings?
Yes, and that is usually the sensible route. We use the proposed drawings to develop the structural design and calculations, then feed back any points where spans, support positions or construction depths need refining before work starts.