Barn conversions, self-builds & one-off homes
At Co & Co Architects, we design homes that are enduring, functional, and rooted in place. Our residential architecture includes barn conversions, self-build homes, and bespoke one-off houses, each carefully tailored to its occupants and setting. With sustainability central to our approach, we create spaces that balance environmental responsibility with refined design.
Barn Conversion Architects in Herefordshire & the Cotswolds
From our studio in the Wye Valley we cover a large rural area including Monmouthshire, Herefordshire, Worcestershire, Cheltenham and Gloucester and the Cotswolds with its many agricultural buildings suitable for adaptation and conversion. We provide feasibility studies for speculative developments, and barn conversions for holiday lets and AirBnB. We understand the market and know how good design can achieve maximum value add for our clients..
One-Off Homes & Contemporary House Design
We design unique and inspiring one-off homes. Each site has its own unique set of constraints and opportunities. We investigate a site’s history to understand each site’s individual story and use this to inform our architectural response. We work closely with our clients to understand how they aspire to live, and design spaces that can improve their lives.
Heritage Architecture & Extensions
We work closely with our clients to adapt and extend existing houses to meet modern lifestyles and needs. Our starting point is always to understand the qualities of the existing building and provide a considered and appropriate response that adds to the building as a whole. We understand budgets and work closely with cost consultants throughout the project to ensure you get the most value for your budget.
Contemporary architecture for distinctive homes
We specialise in residential architecture that transforms ideas into homes with character and purpose. Our expertise spans barn conversions, where agricultural buildings are reimagined as light-filled family homes; self-build projects, tailored from the ground up to suit lifestyle and budget; and one-off houses, designed as unique, statement properties.
From eco homes that prioritise sustainability to custom homes that reflect individuality, every design is bespoke and considered. Based in the Wye Valley and working across the Cotswolds, Bristol, Bath, Cardiff, and beyond, we bring together design flair, technical expertise, and a collaborative approach to deliver homes that feel personal, enduring, and deeply connected to their setting.
Ready to begin your residential project?
Whether you’re exploring a barn conversion, planning your first self-build home, or commissioning a one-off house, our team of residential architects is here to guide you through the journey. We’ll help you navigate planning, permissions, and design, while ensuring your home is sustainable, functional, and beautifully tailored.
Contact us to start a conversation about your project and discover how thoughtful, design-led architecture can bring your vision to life.

