Luxury Builders
in St John's Wood

Prime residential construction in St John's Wood

Crown Building works at the top of the London market, and St John's Wood is core territory for our team. The projects in our published case studies were delivered under exactly the constraints that define this part of London. Protected fabric, exacting consents, discreet site conduct and clients who judge the result at touching distance.

We do not operate at volume. We compete on execution. Meticulous programming, a trusted specialist supply chain and senior management present on site throughout are the baseline for every commission we accept in St John's Wood. The standard does not change with the scale of the project.

What we build in St John's Wood

Our residential work spans the full scope of high end building. We deliver architecturally distinctive new build homes, private residence refurbishments and structural reconfigurations, single and multistorey extensions, basement excavations, listed and period property works, and the bespoke joinery and interiors that define a finished home. Each project is delivered as design and build or contractor only, with Crown appointed as your prime residential main contractor, and transparent, itemised pricing from the outset. Commercial occupiers are served by the same teams through our commercial fit out division, and clinical and wellness premises through our healthcare and specialist environments team.

St John's Wood's detached and semidetached villas offer what much of prime London cannot: width, gardens and the volume for genuinely lateral family living. Private residence refurbishment here typically means complete structural reconfiguration, rear and basement extension, new services throughout and a finish specification set by the area's international ownership. The Eyre estate's covenants and Westminster's conservation designations frame the work. Our NW8 case study documents the full journey, kitchen, principal suites, garden elevation and interiors delivered as one coherent whole.

Areas we serve

We work across St John's Wood, Avenue Road, Hamilton Terrace, the Eyre estate streets, Abbey Road, plus Regent's Park, Primrose Hill and Maida Vale. You can see our full coverage, London within the M25 and a fifteen mile radius of our Watford headquarters, on our areas we cover page.

Villas in gardens, mansion blocks on the street: two different jobs

St John's Wood is unusual in central London for having genuine garden setting, and Westminster's own conservation area description reflects it. To the north and on the eastern and western fringes the density is relatively low: a mixture of large detached and semi detached Victorian villas set in generous gardens along a network of wide, tree lined streets. To the south east the buildings are larger in scale, generally fronting directly onto the street, with a concentration of Edwardian and early twentieth century mansion blocks. The conservation area was designated in 1967 and extended in 1979 and 2007.

Those two halves are entirely different propositions to build in. A detached villa with its own garden and a driveway gives you site standing, a compound, potentially rear access, and a party wall position that involves one or two neighbours rather than twenty. A mansion block flat gives you none of those: every pallet goes through a shared entrance, often under porter supervision and within agreed hours, with a freeholder and managing agent to satisfy before a fixing goes into a party structure. We price the two quite differently, and the gap is mostly logistics rather than finish.

If you own a flat, you may have no permitted development rights

Given how much of the area is mansion flats, this is worth stating plainly. Permitted development rights attach to dwellinghouses. Flats do not have them, so alterations that would be automatic in a house require a full application here. Add Westminster's conservation area coverage, fifty six areas across more than three quarters of the city, and over eleven thousand listed buildings and structures, and the consent position needs establishing at the outset rather than assumed.

There is also an Article 4 Direction covering Abbey Gardens NW8, at numbers 1 to 47 odd and 2 to 56 even, one of eight conservation area Article 4 areas Westminster maintains removing permitted development rights for specified minor alterations. Whether it applies is an address level question rather than a postcode one, and the Council publishes an address checker for exactly that reason.

Basements under a garden: what Policy 50 allows

St John's Wood's generous gardens make it one of the more realistic parts of Westminster for a basement, but the policy still governs. There is no permitted development route anywhere in the city: an Article 4 Direction in force since 31 July 2016 requires a full planning application for any basement. Under Policy 50 of the City Plan, renumbered from Policy 45 in the January 2026 partial review, a basement should not extend beneath more than fifty per cent of the garden land and should leave a margin of undeveloped garden proportionate to the development around the entire site boundary.

It should not comprise more than one storey beneath the lowest original floor level, which the Council's supporting text puts at approximately 2.7 metres floor to ceiling, and must provide at least one metre of soil depth plus a 200mm drainage layer with adequate soil volume above the top cover. That soil requirement is what protects mature trees and planting, and on a St John's Wood garden it is usually the constraint that shapes the scheme rather than the fifty per cent. Basement projects are Level 3 under Westminster's Code of Construction Practice, requiring a Construction Management Plan at least forty working days before commencement.

Speak to us about your St John's Wood project

If you are planning a refurbishment, basement or new build in St John's Wood, call us on 020 3675 3999 or book a free consultation here. Every enquiry is handled by a director.

Frequently asked questions

Where is Crown Building based?

Crown Building's registered office is at Unit 324-B, The Wenta Business Centre, Colne Way, Watford, WD24 7ND. We work throughout London within the M25 and across Hertfordshire and the Home Counties.

Which areas around St John's Wood do you cover?

We work across NW8 including Avenue Road, Hamilton Terrace, the Eyre estate and Abbey Road, plus Regent's Park, Primrose Hill and Maida Vale.

Have you completed projects in St John's Wood?

Yes. Our published St John's Wood case study documents a complete private residence refurbishment in NW8, structural reconfiguration, bespoke joinery, garden works and full interior finish.