My garden is on a slope. Is that going to be expensive?

It adds to the groundworks, so better priced properly than discovered later. Northampton sits on a hill above the Nene, and gardens around Kingsthorpe, Duston, Semilong and the streets running down towards the river often have a real fall to them. We measure it on the visit, decide whether to step the base or build one side up, and put it in the quote.