Renovations in Knightsbridge

Most homes in Knightsbridge are flats, and mansion block flats behave nothing like houses once building work starts. There is no permitted development, the lease governs what may be altered, the freeholder's surveyor reviews the drawings, and the block itself sets the hours, the lift access and the delivery route. GS Renovation works within those constraints across the streets around Brompton Road and the Brompton Oratory, from apartments close to Harrods to blocks facing Hyde Park. The building work in a flat is often the straightforward part; the coordination around it is what decides whether a renovation runs cleanly or stalls.

What Can and Cannot Move in a Mansion Block

Mansion blocks are built around solid masonry cross walls that carry several storeys, with lighter partitions filling in between them. From inside a single flat the two look identical once they are plastered, so the first task is establishing which is which by opening up rather than by tapping the wall and guessing. Chimney breasts inside a flat are another trap, because the stack above continues through the flats overhead and cannot simply lose its base. Removing one means supporting everything above it, and that needs both an engineer's design and the freeholder's consent.

Where a structural wall is being opened, the beam is sized by a structural engineer we appoint and we build exactly to the drawing issued, never to our own calculation. Bearings go into the masonry cross wall on padstones that spread the load, and temporary support carries the floors above while the opening is cut. Because the walls in question are usually shared with a neighbouring flat, party wall notices apply, and the notice periods need to sit in the programme from the beginning rather than being discovered when the steel is already on order.

Bathrooms and Kitchens Above Other Homes

Every wet room in a block sits above somebody else's ceiling, which raises the standard for the waterproofing underneath it. A tanking system taken up the walls and lapped into the tray, correctly formed falls to the outlet, and pipework tested before anything is tiled are the difference between a bathroom that lasts and a claim against your insurance. Acoustic separation matters just as much, because a hard floor and an unisolated waste pipe will be heard clearly below. Both of these fall under building regulations and are inspected, not left to preference.

Layout in a flat is dictated by the existing risers. Soil and waste connections are fixed points, so a bathroom or kitchen can move only as far as the gradients allow, and extract ventilation needs a route to outside air that the block will accept. Licence to alter conditions often require reinstatement at the end of the lease, restrict noisy work to set hours and require protection to lifts and common parts. We work to those conditions, keep one named project manager on site contact, and arrange the building control inspections for the notifiable elements.

Where most Knightsbridge projects start: whole-house refurbishment in Knightsbridge, everything we cover across Kensington and Chelsea, renovations in Kensington, renovations in Chelsea and how to plan a renovation.