The housing stock
What we are usually working with in Barnehurst
Rear extensions on these sit on shallow foundations, and the crack at the junction with the original wall tells you which way it has moved. Levelling is done under the units and not under the stone, so anything out is corrected before a piece is lifted in. Packers under the carcass, not shims under the stone.
Hillside plots mean the rear garden often sits a metre below the house, so the extension floor may not match the original, template after the screed goes down. Sloping suburban roads with drives on nearly every plot and good turning space; only the station approach and the shops get congested.
Where the original steel windows survive at the rear, the frame sits almost flush with the inside face and there is no reveal to lose a joint in. A run crossing from the original room into the extension is packed to one plane before the stone is offered up. Where the wall bellies, the top is eased in against it.
What we are usually templating in is 1930s semi, interwar detached and postwar infill. They were built to different tolerances, and the stone has to absorb that.
There is nothing to visit in Barnehurst. Samples are posted free, the template is taken in your kitchen and the stone is fitted there too.