
Knightsbridge · Prime residential
Luxury construction & refurbishment in Knightsbridge.
Lateral apartment fit-out and whole-house refurbishment across Knightsbridge, One Hyde Park and the surrounding streets.
SW1X · SW7
Delivering in Knightsbridge
Knightsbridge is a mansion-block market. Delivery is defined by lease conditions, porter-managed access, tight hours and a client base that expects the finish to match a suite at the Berkeley. Our directly employed workshop, stonemasons and joiners work here every week, in occupied and unoccupied blocks, on lateral fit-outs from £2m to £20m.
Ushii is a London construction house working with private clients, family offices and developers across Knightsbridge and the surrounding prime postcodes. Every project is delivered by our own directly employed teams under a single point of accountability from first survey to final handover.
Properties we work on
What we build in Knightsbridge.
Where our teams focus
Knightsbridge disciplines.
Lateral apartment fit-out
Combining laterals across mansion floors, with freeholder consents, lift access and porter coordination handled by us.
Penthouse fit-out
Full penthouse fit-out with structural glazing, plant relocation and rooftop terrace works.
Whole-house refurbishment
Refurbishment of Knightsbridge stucco terraces to the standard expected on the top of the prime London market.
Boutique retail fit-out
Discreet shopfitting for luxury tenants on Sloane Street and Brompton Road with out-of-hours delivery.

Services available in Knightsbridge
Every discipline, under one team.
Answers
What Knightsbridge clients ask.

Can you deliver at One Hyde Park?
We work under the building's licence for alteration process and porter-managed hoist access, and hold the required insurances for the block.
How is dust and noise handled in a mansion-block lateral?
Negative-pressure enclosures, HEPA extraction, protected common parts and works scheduled around the block's permitted hours. Neighbours are briefed before mobilisation.
What's your programme for a lateral fit-out?
For a 4,000 to 6,000 sqft lateral, plan on ten to fourteen months from consents cleared to snag list.
Do I need planning permission for an extension in Knightsbridge?
Most work here is internal and controlled by the freeholder and managing agent, with party wall awards needed on almost every job. We confirm the position for your specific address before any design work begins, including whether the property sits inside a conservation area or carries an Article 4 direction.
Which council covers Knightsbridge?
Knightsbridge is covered by the Royal Borough of Kensington & Chelsea and Westminster City Council. The area straddles two boroughs, so the same street can be governed by two different planning teams with two sets of expectations.
How long does a project in Knightsbridge usually take?
Four to ten months for an apartment depending on structural work.
What kind of properties do you work on in Knightsbridge?
Mansion blocks, red-brick Victorian flats, stucco terraces and penthouse apartments in managed buildings. Our Knightsbridge work is mainly lateral apartment conversion, penthouse fit-out, structural openings and complete services replacement.
Do you use subcontractors on Knightsbridge projects?
No. Every trade on site is directly employed by Ushii, so the people who price your Knightsbridge project are the people who build it.
Services in Knightsbridge
Explore a specific trade in Knightsbridge.
Local guide
Building in Knightsbridge: renovation, planning and getting it right
Housing stock, council planning policy, realistic programmes and the site logistics behind a Knightsbridge project.
Read the guide →
Also delivering in