We are a sustainable London builder, delivering inspirational homes and workplaces with Passivhaus principles.

Design and Build Contractors

We specialise in creating bespoke architectural homes through our unique, architect-led design and build service in London and the South East. From concept to completion, we deliver high-quality residential projects tailored to each client’s vision, site and budget.

Our four site teams are led by experienced architects and project managers, who act as the principal point of contact throughout the project. They work closely with each site manager to maintain quality while monitoring progress, programme and budget.

Our contemporary approach to construction is supported by a suite of digital project management tools. This enables seamless site communication during construction and enhances client service and aftercare.

Expertise in London Homes

Our work includes new-build London homes, house extensions and sensitive additions to heritage properties, including listed buildings and homes in conservation areas. Current design and build projects include a house extension and refurbishment in Queens Park, a Notting Hill Mews house, and a Grade II listed townhouse in Barnsbury, Islington.

We are experienced in navigating the challenges of constrained London sites, including tight access and close neighbouring properties. We work closely with local residents to minimise noise, disruption and impact throughout the build.

A Sustainable Builder

Environmental impact is a key consideration in our work. We take a fabric-first approach to sustainability based on the Passivhaus principles of airtightness, high-performance insulation, triple glazing and MVHR, delivering low-energy properties that are healthy, warm and comfortable throughout the year.

We build fossil fuel free homes, ultimately aiming for net zero energy in use. This accords with UK’s requirement to reach net zero across all sectors by 2050. The homes that we retrofit now will not be refurbished again before this date, so each project is critical. We have particular expertise in the installation of renewables such as solar panels, PV panels and heat pumps; including to heritage and listed properties.

In addition to the performance of our buildings in use, we carefully consider embodied energy. We use materials and processes with less embodied carbon and repurpose materials on-site where possible to reduce waste. For all other waste disposal, we use partners who are committed to diverting waste from landfill with transfer stations that specialise in re-use and re-cycling.

Our preferred material palette of clay, lime, stone and timber helps us create healthy, low-VOC spaces with low embodied energy. If you are looking for a sustainable builder in London, we’d be delighted to discuss your project.

A Professional Service

While we specialise in individual residential projects, we offer the professional standards of a larger building contractor. We invest in our team through training, development and mentorship programmes. Our team of builders in London includes a Passivhaus-certified tradesperson and CSCS-qualified site managers. Our reputation for quality and reliability comes from exceptional workmanship and finishing skills.

What Our Clients Say

“Proactive, transparent and efficient – AFL Build was everything I could hope for. They were always a step or two ahead in coordinating the construction process, while always ensuring I was consulted in decisions. Communication with Erika was clear and easy throughout. Highly recommend!” – Peter Kanning, Canonbury, N1

“We could not be happier with the outcome of our flat refurbishment. From our initial conversation with AFL Build to the completion of a stunning, stylish, and functional space, every step was met with thoughtfulness and skill. The construction team was incredibly considerate, understanding our vision while also ensuring our neighbours’ satisfaction throughout the process. We are thrilled with the results and highly recommend their services” – Anne McKenzie, Belsize Park NW3

“AFL Build completed a rear extension and adaptations to my Edwardian house to accommodate a disability. Our house extension blends in beautifully and was carefully constructed to meet all our needs and maximise the limited space. I’m filled with joy when I go into the kitchen each morning” – Bernadette Wright, Bow E3