The Quadrant

Project Details

  • Client: Kier Property
  • Type: Commercial
  • Location: London, England
  • Date: September 2018

Life Cycle Design practitioners CHB Sustainability completed both a life-cycle environmental and life-cycle cost assessment of the Quadrant building.  Developed by Kier Property the project extends the building located in Richmond, London to provide new office space. The lettable space of the building will be increased from 1,820 m2 to 2,508 m2 by the addition of two new floors at the rear of the building.

The design of the project addresses the key sustainability themes of energy, water, materials, pollution, ecology, biodiversity and open space and has been awarded an interim Excellent rating under BREEAM 2014.

Contributing towards this rating CHBS undertook LCA and LCC analysis awarding 2 bonus materials credits under Mat 1 as well as 2 management Man 2 credits (interim stage) with the 3rd credit to be completed at Stage 4.

“The template approach to etooLCD software means that the initial process of formulating a baseline model is relatively quick, so time can be focussed on assessing options and recommendations.  The ease of looking at the building life-cycle in both cost and carbon terms means that once a development is modelled in etooLCD it’s a no-brainer to go for the full package of BREEAM credits that may be awarded for Life-Cycle Assessment.”

Peter Bartley – Associate Director at CHB Sustainability

Results Summary

Assessment Scope

Full LCA (Stage A1-C4) of the building including substructure, superstructure, internal finishes, external works, people and equipment, operational energy and water.

Project impacts over 60 year life cycle (assuming todays grid applied throughout)

Impact CategoryUnitLife Cycle Quantity
Stage (A-C)
Global Warming Potentialkg CO2e / m2 (GFA)3750
Acidificationkg SO2e / m2 (GFA)17.2
Eutrophicationkg PO4e / m2 (GFA)4.47
POCP (summer smog)kg ethylene / m2 (GFA)1.39
Ozonekg CFC-11 eq / m2 (GFA)0.00039

Project GWP Impacts over 60 year life cycle.

*Assumes 60 year life expectancy and todays electricity grids applied over full life