HXL

Basement Construction · St John's Wood · NW8

Basement Construction in St John's Wood

Single-storey, double-storey and lightwell basement excavations under existing London homes. Delivered for St John's Wood across NW8, coordinated with City of Westminster.

Basement Construction in St John's Wood, London
Basement Construction · St John's Wood

Overview

HXL delivers basement construction in St John's Wood and across the wider London. Basement construction under existing London townhouses, semi-detached and detached homes is high-margin, technically demanding work that HXL routinely delivers. Single-storey excavations under footprint, double-storey schemes, lightwell and sub-pavement vault construction in conservation-area streets. All schemes include temporary-works design, structural propping, BS 8102-compliant waterproofing, and party wall coordination across all affected neighbours.

St John's Wood · local context

Delivering basement construction to St John's Wood's requirements.

Property stock

Mid-Victorian detached and semi-detached family homes, 1930s mansion blocks, post-war infill. Many properties on the Eyre Estate's private roads.

Planning & conservation

St John's Wood Conservation Area (Westminster). Eyre Estate covenants apply on certain streets.

Planning: City of Westminster

Typical scope

Representative work HXL undertakes across St John's Wood.

  • Ground-up new builds on infill plots
  • Full-house refurbishments with basement additions
  • Mansion block lateral conversions
  • Spa, gym and cinema room installations
  • Landscape and pool integration

How we deliver

The basement construction process.

01

Survey & design

Ground investigation, structural engineering design, party wall service, planning consent where the scheme falls outside permitted development.

02

Excavation

Underpin, install temporary works, excavate, remove spoil, construct retaining walls.

03

Waterproofing & fit-out

BS 8102 system installation, M&E first fix, plant install, second fix and finishes.

04

Sign-off

Structural sign-off, Building Control completion, waterproofing system warranty, 12-month workmanship warranty.

Questions

Basement Construction in St John's Wood.

Yes. HXL delivers basement construction across St John's Wood (NW8) and the wider London, as a principal contractor under a single JCT contract.

City of Westminster. St John's Wood Conservation Area (Westminster). Eyre Estate covenants apply on certain streets. HXL coordinates the planning submissions and statutory consents in-house, alongside your architect.

Mid-Victorian detached and semi-detached family homes, 1930s mansion blocks, post-war infill. Many properties on the Eyre Estate's private roads.

Enquire

Tell us the project in a paragraph. We reply within one working day.

HXL takes on a selective number of projects each year. A short note with the site, scope, appointed architect (if any) and likely timescale is all we need to open a conversation.

Private Residential

Homeowners with projects from £500k to £3m+, London and the Home Counties.

Residential Developments

Blocks of flats, multi-unit schemes, resale-ready delivery.

Heritage & Period

Listed buildings, conservation areas, period townhouses.

London · Home Counties · Buckinghamshire
CallEmailChat