Nearly all the replacements we quote in Hacton start with the same conversation about what is already in the kitchen and what is staying. Quieter housing between Hornchurch and Upminster with a good proportion of post-war detached and larger semis, where kitchens tend to be squarer than the terraced stock and take a genuine U-shape without extending. A fair number of bungalows and dormer conversions here too, which means single-storey plans and kitchens with two external walls and more window than wall. We measure the kitchen you have, not the kitchen the plans said you would have. Those two part company often.
Ceilings are lath and plaster at the front and plasterboard in the extension, and the join between the two marks where the original back wall stood. Old top out in the morning, new stone down and sealed the same afternoon, with a plumber either side of us. Cutting the old top out saves the units below it.
The roof space above carries services, so a boiler flue or a soil vent can drop into a corner of the kitchen and stay exactly there. The kitchen is normally the original back room with a later side-return or rear extension bolted on, and that helps us: most pieces can go down the side alley and in through the back door in one length, so we can avoid joins that a front-door route would force. Plaster comes away with the old upstands more often than not.
The buildings themselves are mostly 1930s semi, post-war semi, 1960s-1970s detached and modern infill. A quote that ignores which one you have is guessing.