From the team behind Hampstead Renovations · Est. 2009 · Learn more
Case StudySt John's Wood, NW8May 2025

Luxury Bathroom Renovation, St John's Wood

A spa-level renovation of the principal bathroom in a Grade II listed villa in St John's Wood, creating a bespoke onyx-tiled sanctuary with a freestanding Kaldewei bath, steam shower, heated floors, and concealed integrated audio. Westminster Listed Building Consent was obtained for the full scope.

Project Type

Luxury Bathroom Renovation

Duration

7 weeks

Project Value

£68,000

The Challenge

The bathroom was in a Grade II listed property requiring Westminster Listed Building Consent. The clients' specification included a large steam shower with a Helo steam generator requiring a penetration through an external wall for ventilation — this penetration required careful heritage justification. The existing Victorian cast iron waste pipes were failing and required replacement within the listed floor void.

Our Solution

Westminster consented the steam shower ventilation penetration on the basis that it would be through an existing blocked Victorian chimney flue, leaving the original fabric intact. The Victorian cast iron waste pipes were replaced with modern MUPVC within the floor void under Westminster supervision. All tiling was fixed to Wedi board substrates to avoid any cement screed that might stress the listed floor structure.

Results

  • Westminster Listed Building Consent obtained for full scope
  • Steam shower ventilation through existing chimney flue — heritage-approved
  • Victorian cast iron waste pipes replaced — Westminster supervised
  • Book-matched honey onyx wall tiles throughout steam shower
  • Kaldewei Meisterstuck Conoduo freestanding bath installed
  • Helo Vapro steam generator — 9kW, full-room steam
  • Sonos in-ceiling speakers with Bluetooth — concealed installation

Key Features

  • Westminster Listed Building Consent — full scope
  • Book-matched honey onyx steam shower enclosure
  • Kaldewei freestanding bath — Meisterstuck range
  • Helo steam generator — thermostatic control panel
  • Vola taps and shower fittings — brushed gold finish
  • Electric underfloor heating — full bathroom footprint

Specification

ItemSpecification
Steam shower tilesHoney onyx slabs, 1200×600mm, book-matched veining, polished finish — Lapicida
BathKaldewei Meisterstuck Conoduo 1800×800mm freestanding, white, Vola floor-mount taps in brushed gold
Steam generatorHelo Vapro 9kW, thermostatic LCD control panel, automatic drain, ventilation fan
BasinBespoke marble vanity slab with Duravit DuraSquare undermount basin, Vola 111 basin mixer
UFHWarmup StickyMat 200W/m² electric mat, Warmup 6iE connected thermostat
AudioSonos Amp with Sonance in-ceiling speaker pair, Bluetooth and app control

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