Our Experience

Harlow’s expertise in retrofit and net zero is complemented by our industry-leading knowledge and experience in the construction, housing and heritage sectors. We also regularly collaborate with several experienced and trusted partners whose expertise includes architecture, econometrics, heritage consultancy, sustainable conservation and construction work on listed buildings. 

Harlow Consulting was commissioned to help refine CITB’s skills forecasting model, intended to accurately forecast the workforce and skills required to deliver an extensive programme of retrofit and improve the thermal performance of UK’s national housing stock. This research involved gathering data on the trades and time input needed to install energy efficiency measures to decarbonise the UK’s housing stock. It spanned desk research into existing labour forecasting models, analysis of quantitative data provided by TrustMark and a large-scale survey of registered trades involved in the installation of domestic energy efficiency measures. We produced a technical report containing labour coefficients for installing 29 different retrofit measures; a summary of the research is available here. 

Manchester-based Carbon Co-op is piloting an innovative area-based retrofit scheme in Levenshulme. Harlow Consulting was commissioned to evaluate the programme – capturing the experience of project partners, the supply chain and householders. Our outputs have included blogs, a webinar and insights paper, identifying how the scheme is working, and key lessons to be learned notably in relation to the processes, financing model and resident engagement.  

Harlow Consulting carried out an intensive seven-week desk-based review, drawing on over 350 sources, to help improve Historic England’s understanding of the CO2e contribution of traditional and modern building materials. The work involved a review of relevant Environmental Product Declarations (EPDs) and Lifecycle Assessments (LCAs), academic research, technical guidance and other grey literature. A key element of the research was to base discussion in the context of retrofit and reflect on the methods and systems of repair and installation of different materials – comparing modern and traditional.  

Case Studies