A practical guide to extension foundations & groundworks: what happens on site, what good looks like, and a homeowner checklist before moving to the next stage. Stage series note: This is Stage 1 of 9 in our Build Stage Series. Build Stage Series hub . At a glance - Setting out, excavation, concrete pours and drainage preparation. - Levels and accuracy now prevent expensive fixes later. - A tidy, measured groundwork stage is a sign of a well-run build. What happens on site (s

A clear, no-nonsense guide to the full build process. Each stage includes a homeowner checklist, common pitfalls, and what to expect next — so you feel in control from start to finish.