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Thoughtfull Crafted

Mills + McCullough


We specialise in sustainable building design while working within conservation areas, with listed buildings and in areas of outstanding natural beauty.

Nick + Stephen

Thoughtfully crafting homes and cultural spaces with personal character for homeowners and communities.

We create sustainable, long-lasting homes with personal character that are in harmony with you. Whether it's an extension to a listed building or a new build property, we create wholesome and adaptable places that you will love to call home.

It is our privilege to work with organisations and communities to make buildings that positively contribute to society and enrich our culture. We create gathering places that nurture wellbeing, celebrate our cultural identity and sustain community life.

Featured Project

Edinburgh Architectural Association

Small Project Award Winner 2021

Old Schoolhouse - Edinburgh

'The Old Schoolhouse is special: it puts architecture in the urban realm and at the heart of a community. The clever plan resolutions and contextual architectural inspirations ensure that the architectural delivery is respectful, honest, polite and rich. This project raises the inherent values and pride that every building at the heart of a community can deliver by being repurposed.

EAA Judges Comments

In our clients' words

Listed Building Renovation and Extension


‘Nick and Stephen are a real pleasure to work with. They listen carefully to the client brief and respond with inventive, elegant and thoughtful solutions. They pay fantastic attention to practical details but this is coupled with great aesthetic sense. They work hard in the pursuit of excellence and communicate well at every stage of the process. I can’t recommend them highly enough.'

Neil MacMillan

New Build Home

Mourne Mountains

‘Mills + McCullough fulfilled our brief in a way we had not considered possible, creating a fluid series of spaces in response to our site while keeping the footprint within our limitations. Stephen and Nick have been very innovative in developing a design with which we are delighted. We would recommend them, they are knowledgeable and forward thinking in their approach while offering an extremely professional yet personal service.’

Anne + Ivan

Home Renovation + Extension


‘We have thoroughly enjoyed partnering with Nick and Stephen on our project. Their ideas and application took our project beyond our expectations. What really impressed us with Nick and Stephen was that their drive and enthusiasm for our project was still there even after a year of working together. Their problem solving and project management skills are exceptional, and alongside their obvious skills as architects, we are delighted to have appointed them to our project.’

Scott + Eilidh

Garden Studio


‘We’ve worked with Nick and Stephen for several years now and are currently embarking on our second project with them. Throughout every stage, they’ve provided expert analysis, presented a variety of options and presented great designs through clear and well written documentation. Nick and Stephen’s attention to detail is first class and we have no hesitation recommending them to anyone’


Contact the Studio

If you would like to chat with us about an upcoming project we would be delighted to hear from you. Click here to book a call  or send us a few details using the form below and either Nick or Stephen will be in touch with you shortly.

Thanks for getting in touch.

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