About HermanCalleja
Chartered Architect, Principle Environmental Consultant at ChapmanBDSP and Tutor at the Architectural Association SED MArch/MSc programme

Herman Calleja has practiced as an architect before joining the SED M.Arch programme at the AA, graduating with distinction in 2012. Since then he has worked as an Environmental Consultant at BDSP/ChapmanBDSP assisting various design teams with regards to occupant comfort, façade design, CFD analysis, daylighting and other passive design strategies. Herman has worked on a variety of projects with different architects including Foster+Partners, RSH+P, Santiago Calatrava and Grafton Architects. His main area of interest is the combination of climate-based daylighting modelling with the assessment of occupant thermal comfort through a parametric design platform. Pursuing this research Herman has participated in various workshops and conferences including Smart Geometry, PLEA and NCEUB.
Featured articles and news
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.
Types of drawings for building design
Still one of the most popular articles the A-Z of drawings.
Who, or What Does the Building Safety Act Apply To?
From compliance to competence in brief.
The remarkable story of a Highland architect.
Commissioning Responsibilities Framework BG 88/2025
BSRIA guidance on establishing clear roles and responsibilities for commissioning tasks.
An architectural movement to love or hate.
Don’t take British stone for granted
It won’t survive on supplying the heritage sector alone.