08/09/2025
Deep retrofits can transform existing homes into low-carbon, healthy places to live.
This project with One Tree Hill College upgraded a former Kāinga Ora - Homes and Communities state house to achieve HomeStar 7 (v5), improving health, comfort and energy efficiency. At the same time, the design team focused on:
- Retaining as much of the original structure and cladding as possible
- Applying low-carbon design strategies and materials
- Working with local trades and supply chains
- Improving thermal comfort and weathertightness
The result: a healthier, drier home with 33% less embodied carbon than a full rebuild, proving retrofit can deliver both better living standards and lower climate impacts.