Hills & Co. | A Sustainable Architecture & Interior Design Studio

Thoughtful Passivhaus Design from the Wye Valley to the UK.

Nestled in the Wye Valley, Hills & Co. is a studio creating thoughtful, sustainable architecture and interior design across the UK. We craft distinctive, considered spaces with a particular focus on Passivhaus homes, low-energy living, and designs that respond sensitively to their landscape, heritage, and setting.

From contemporary new builds and creative renovations to carefully designed extensions, our fully integrated service guides clients from concept to completion. With a commitment to sustainable design principles, including Passivhaus and RetroFirst, we combine purposeful creativity with technical expertise — and are proud to hold a 100% planning approval rate.

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The Studio

At Hills & Co. curiosity and craftsmanship guide everything we do. We adapt thoughtfully to each client and context, creating beautiful spaces for living, working, and retreating. From the first sketch to the final detail, our work is driven by a desire to inspire, nurture, and delight.

We offer a fully integrated architecture and interior design service, combining both disciplines from concept to completion. Our collaborative process includes everything from hand sketches and palette boards to CAD drawings, 3D visuals, and detailed technical plans.

As an RIBA Chartered Practice, we follow established industry stages to deliver imaginative, environmentally conscious designs — spaces that meet practical needs while elevating everyday experience through thoughtful, sustainable design.

A Monmouth based architecture and interior design studio specialising in passivhaus

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Get in touch

We’d love to hear about your next project. Say hello and let’s set up a complimentary site visit.

A hand-made architectural model of a building within a design studio

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Fantastic team to work with. Hills have created a wonderful kitchen and living space for our family. The design is beyond our expectations. The space will transform the house and the way in which we'll live in it. The detail is within the design.

T. Yeo
When we first approached Hills about an extension that we wanted to build we thought we had a pretty good rough idea of what we wanted. They then completely opened our eyes to a whole range of ideas, making us consider things that we would never even have thought about. In the end we've ended up with our house being transformed far beyond what we ever imagined possible. It's not an overstatement to say that the space has genuinely changed our lives. They were a pleasure to work with too, so it probably goes without saying that we would highly recommend Hills.

N. Maclachlan
We have loved working with Hills on the refurb of our house in Tutshill, involving an exterior overhaul and internal refit. Their clever, sympathetic suggestions made family life in our new home make complete sense and look beautiful too! Their experience has kept us protected through contractor engagement as well as navigating uncertain times. Their approach and outlook is different and sets them apart from others.

C. Love