About Chris.twinn
Buildings environmental engineer specialising in zero carbon and retrofit.

Chris Twinn set up his own specialist practice 10 years ago after 28 years at Arup, latterly as Arup Fellow and director. He delivered his first zero carbon development more than 25 years ago and brings a wealth of experience in practical design, construction, and policy, from years working around the world. Chris is an EDGE think-tank core member, LETI member, Sustainable Development Foundation board member, Net Zero Carbon Buildings Standard Governance Board member, Honorary Fellow of the RIBA, a CIBSE Fellow and on CIBSE publication and special interest groups.
Chris led the LETI workstream publishing the new guide on “Retrofit at scale: how Many, how Deep, at what Cost” https://tinyurl.com/4xv4hszh
Featured articles and news
Nominations sought for CIOB awards
Celebrating construction excellence in Ireland and Northern Ireland.
EPC consultation in context: NCM, SAP, SBEM and HEM
One week to respond to the consultation on reforms to the Energy Performance of Buildings framework.
CIAT Celebrates 60 years of Architectural Technology
Find out more #CIAT60 social media takeover.
The BPF urges Chancellor for additional BSR resources
To remove barriers and bottlenecks which delay projects.
Flexibility over requirements to boost apprentice numbers
English, maths and minimumun duration requirements reduced for a 10,000 gain.
A long term view on European heating markets
BSRIA HVAC 2032 Study.
Humidity resilience strategies for home design
Frequency of extreme humidity events is increasing.
National Apprenticeship Week 2025
Skills for life : 10-16 February
Update on the future of Grenfell Tower
Deputy Prime Minister decides for it be carefully taken down to the ground.
Ending decades of frustration, misinformation and distrust.
Essential tools in managing historically significant landscapes.
Classroom electrician courses a 'waste of money'
Say experts from the Electrical Contractors’ Association.
Wellbeing in Buildings TG 10/2025
BSRIA topic guide updates.
With brief background and WELL v2™.
From studies, to books to a new project, with founder Emma Walshaw.
Who, or What Does the Building Safety Act Apply To?
From compliance to competence in brief.