Case Study

6-10 Carlton Lodge, Belgravia SW1X

A high-spec penthouse duplex transformation in a listed urban context: full internal rebuild, roof reconstruction with structural steel, new services and premium fit-out for multi-unit handover.

Programme11 Months
Budget Band£1.9m - £2.4m
ContextGrade II Listed Setting
DeliveredDuplex + 4 Apartment Scopes
Carlton Lodge Belgravia exterior and rooftop works Carlton Lodge interior fit-out progress Carlton Lodge completed duplex interior

Scope & Specification

  • Penthouse strip-out and complete reconfiguration into a duplex layout
  • Roof rebuild with structural steel for headroom, daylight and flow
  • New kitchen, bathrooms, flooring and bespoke joinery package
  • Full electrical and plumbing renewal with updated compliance strategy

Timeline Milestones

  • Months 1-2: listed-building coordination, surveys and technical design
  • Months 3-5: demolition, steel package and primary structural works
  • Months 6-8: M&E first fix, roof envelope and partitioning
  • Months 9-11: high-spec finishes, commissioning and staged handover

Budget Framework

  • Structure and envelope: ~36%
  • M&E and compliance systems: ~23%
  • Interior fit-out and bespoke joinery: ~32%
  • Professional fees, prelims and contingency: ~9%

Delivery Challenges Solved

  • Worked safely within a listed-building sensitivity envelope
  • Sequenced noisy and high-risk structural tasks to minimise disruption
  • Integrated premium finishes with services routes and structural constraints
  • Delivered quality control across multiple overlapping apartment scopes

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