Your home is the biggest, single investment you’ll ever make. An extension is a large piece of that. We build uPVC extensions in Northampton, Northamptonshire and Milton Keynes, and we would rather talk it through on site than guess from a photograph.
The same standards apply as on our windows, doors and conservatories: building regulations on energy, a proper finish, and a deadline we endeavour to keep.
No deposit until the work is carried out to your satisfaction, and the ten-year guarantee. If the job is really a garden room standing away from the house, look at garden rooms instead.