There is a reason we ask about the building before we talk about stone, and bathroom worktop fitting in Castelnau is a good illustration of it. Distinctive early Victorian paired villas with tall rooms and deep plans: kitchens usually at the rear or in a lower ground, with 3.5m to 4m runs, high ceilings that allow full-height splashbacks, and space for a proper island in the wider houses. The quote is free, so finding out where you stand costs you nothing at all.
Sash windows sit low in the rear wall, and the sill often lands below the height a worktop wants to run past. What that does to a vanity is push the whole job into a narrow depth, because a bathroom takes the same stone as a kitchen in about two thirds of the width. The same stone as the kitchen, in a narrower cut.
Rooms are tall with deep window reveals, and a run finishing into a reveal is templated to it rather than assumed square. Either way the walls are thin, the floor is boards over shallow joists and nothing meets at a right angle, so the vanity is scribed at both ends and the unit is fixed back to the wall as well as standing on the floor. An original bathroom is usually the smallest room upstairs.
The housing on these streets is 1840s stucco villa, Victorian semi, interwar flats and postwar infill. A quote that ignores which one you have is guessing.
Figures cover postcode district SW13| Figure | Castelnau | Against London | What it means for the job |
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| homes built before 1919 | 47% | pre-1919 share higher than 74% of the 723 areas we cover | |
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| homes built since 2010 | 3% | post-2010 share lower than 80% of the 723 areas we cover | No two kitchens are set out alike. |
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| median sale price, postcode district, Jan 2024 to Jun 2026, n=518 | £1,137,500 | median price higher than 98% of the 722 areas we cover | |
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Sources: VOA Council Tax Stock of Properties 2025 and ONS Census 2021 for MSOAs E02000786, E02000784 and E02000795; HM Land Registry Price Paid for SW13. Open Government Licence v3.0.