Renovation & Refurbishment

Sit back and enjoy these videos of one of our passivhaus retrofits!

As featured on Al Jazeera’s EarthRise series – Retrofitting London’s Old Houses

Or see our very own video log: Lena Gardens Passivhaus video log

South London – EnerPHit Retrofit

Penthouse EnerPHit retrofit

Simple case study

Off-grid farmhouse in the Lake District


Simple case study

Surrey passivhaus

80 Foley Road

Simple case study

Pioneering passivhaus retrofit

Lena Gardens Cover Photo

Outline project description 

Detailed case study (for the technical nitty-gritty)

Another pioneering passivhaus retrofit



100 Princedale Road Thermal 1

Simple case study

Whole house rebuild – off the gas grid

Old Meadow House

Simple case study

Heating system specification with renewable microgeneration

TiSUN system diagram

Simple case study

Commercial roof replacement




Simple case study

Upgrading 1970’s architecture



Simple case study


Basement flat passivhaus upgrade

Air tightness tape

Simple case study