In September 2016, the UK Green Building Council (UKGBC) with Grosvenor and David Morley Architects, invited a group of members to 119 Ebury Street for an on-site learning tour. The Grade II listed building is part of Grosvenor’s Sustainable Retrofitting Programme which will produce 300 residential properties sustainably retrofitted across Mayfair and Belgravia.


Project Highlights

  • Anticipated to reduce the building’s carbon emissions from 29 tonnes per year, to 6 tonnes, meeting the Government’s 2050 target of an 80% reduction in emissions
  • The project won the 2015 Best Global BREEAM Residential Refurbishment Award for its sustainable design
  • The first listed residential building to be awarded BREEAM Refurbishment ‘Outstanding’ rating at design stage
  • A pilot project for Grosvenor to push the boundaries on sustainable retrofit in listed residential buildings
  • 119 Ebury Street will be monitored to assess building performance over a two-year period. This will be compared against 125 Ebury Street, a similar property refurbished in 2012
  • Retained heritage features including; sash windows, the original staircase, cornices and mouldings, joinery, original fireplaces, wall and ceiling finishes

Post Occupancy Evaluation

The purpose of a post occupancy evaluation is to understand the in-use performance of the apartments and how the end user interacts with the sustainable features. The performance of 119 Ebury Street will be compared to 125 Ebury Street, which was recently upgraded to Grosvenor’s minimum standards. This information will be used to build the business case for a more sustainable approach to retrofitting listed buildings.

Grosvenor has commissioned a two-year monitoring program to cover:

  • Energy, fuel and water consumption
  • Internal comfort conditions
  • Occupant satisfaction
  • Effect of the insulation upgrade on the existing building fabric

The monitoring strategy will include:

  • A design review
  • Occupant interviews
  • Monitoring of fuel use, energy and water monitoring
  • Temperature monitoring
  • Fine tuning of design features the in early stages
  • Regular reporting and an annual review
  • Interstitial condensation monitoring
  • Fault detection of features
  • Regularly reviewing the energy display

Download the full case study to read more: Ebury Street case study On-site learning