
Sustainable Residential Extensions in London
Sustainable Residential Extensions by Expert Architects in London
At New Makers Bureau
We specialise in sustainable residential extensions that transform existing homes across London, with particular expertise in working on listed buildings and properties in conservation areas.
Whether you're looking to add a contemporary kitchen extension, a loft conversion in a heritage property, or a side return extension within a conservation area, our London-based architectural team guides you from concept to completion — with sustainability and sensitivity at the heart of every design.
Architects for Extensions in Conservation Areas & Listed Buildings
Extending a home in a London conservation area or working with a Grade II listed building comes with complex planning requirements. Our architects are experienced in:
Navigating heritage planning consents
Designing in dialogue with existing architecture
Working closely with local authorities across Camden, Islington, Lambeth, Hackney, and more
We’ve helped homeowners secure permissions and deliver high-performance, low-energy extensions that respect the past while embracing the future.

Sustainable Architecture That Works for You and the Planet
We believe that the most sustainable building is the one that already exists. That’s why we:
Use natural materials and low-carbon construction techniques
Prioritise retrofitting and fabric-first strategies
Design for thermal performance, daylight, and future adaptability
From Passivhaus-inspired rear extensions to deep green upgrades in heritage homes, we make your home work harder — beautifully and responsibly.
Our Services
Sustainable Rear Extensions
Loft Conversions in Listed Buildings
Kitchen & Side Return Extensions
Garden Rooms & Outbuildings
Planning Applications in Conservation Areas
Full Retrofit & Extension Packages
We work across North, South, East and West London, tailoring every project to the unique fabric of the home and its surrounding context.