Architectural focus on designing stylish, affordable and energy-efficient homes
In a landscape dominated by larger architectural firms, Dig Architects, a solo-run practice based in East Cornwall, proves that small businesses can make a significant impact on the design world, writes Jane Pierce.
Founder Daniel ‘Dig’ Mattholie has worked overseas (but is loving being back in Cornwall) and is a person who really knows his architectural stuff.
In short, having a coffee with him to chat through his recent build projects is a real eye-opener. Bottom line: his work can save a bundle on energy bills.
Dig founded his business in 2022. His aim was simple: to reshape custom home design to create residences that blend seamlessly with their natural surroundings.
By taking on a select number of projects each year, the firm ensures a bespoke, hands-on approach, providing clients with tailored attention and a design experience that meets their specific needs.
His philosophy centres on building long-lasting relationships and delivering energy-efficient, affordable – and visually striking homes. And, let me tell you these homes are very striking: elegant and graceful.

Dig’s ‘Hillside’ home was designed as a dramatic, highly energy-efficient family home. Photograph: Dom Moore.
‘Quality over quantity’
‘I’ve always believed in quality over quantity,’ says Dig. ‘As a solo practice, I can personally guide each project from start to finish, ensuring every detail is executed precisely.’
‘My goal is to create beautiful and affordable homes, offering a space that complements my clients’ lifestyles while performing exceptionally well in energy efficiency.’
Located in the picturesque Rame Peninsula, Dig Architects works primarily in Cornwall and the South West – though its reputation for innovative design extends far beyond the region.
The firm’s portfolio includes an array of contemporary projects, a mix of new builds and refurbishment / extensions, all crafted with a focus on energy-efficient, low-energy construction solutions.
Dig Architects is at the forefront of pushing the boundaries of energy-efficient, low-energy homes. The company takes a ‘fabric first’ approach to house design to reduce operational energy demand.
This extends from the design stage through to the construction of the building. Projects by Dig Architects are Net Zero operation as standard – and have been for some time.
With more UK construction projects setting ambitious energy and sustainability targets, the firm is well-aligned with growing national priorities for reducing energy consumption.
Local councils are increasingly committed to new policies that require energy-efficient heating systems, reduced energy usage – and the integration of renewable energy into the performance of all new-build homes.

Dig’s ‘Hillside’ home was designed as a dramatic, highly energy-efficient family home. Photograph: Dom Moore.
‘Working closely with each client’
The aim is to ensure that they generate or offset as much renewable energy as they consume.
‘I work closely with each client to ensure their needs are met and that the design is environmentally sensitive and harmonious with the wider community,’ explains Dig.
‘Every project is about creating something meaningful that reflects the area’s unique qualities and is a home that meets energy performance targets whilst retaining both style, affordability and functionality.’
Although sustainability remains a core principle, the firm places equal emphasis on energy performance and affordability.
Dig Architects endeavour to design simple yet high-performance buildings that actively incorporate renewable technologies.
Using carefully selected natural materials ensures that each home supports modern living while keeping operating costs low and contributing to a sustainable future.
Dig lives in his own self-designed energy-efficient home: Hillside. It’s an experimental case study to influence future projects. Dig strongly advocates that low-energy design can save money in the long run and has the data to back it up.
‘With our onsite renewable energy production, like solar panels, combined with minimal energy demand [for space and water heating], our home acts as a mini ‘green energy’ power station,’ he explains.
‘It’s fully electric, no oil or gas, and generates twice the energy it uses, even making a profit by selling back to the grid.’
Energy savings
He estimates that the energy savings be over £2,500 annually, adding up to more than £50,000 over 20 years. The house was constructed at a below national average build cost.
As energy efficiency and low-energy homes become increasingly vital in the face of climate challenges, Dig Architects can surely say it’s making a substantial impact.
Afterall, here is a firm with a clear goal to offer affordable, high-performance homes that push the boundaries of what’s possible. It’s one to keep an eye on as we feel it’s going to shape the future of architecture in Cornwall – and beyond.

‘Hillside’ showcases Dig’s commitment to affordable and stylish buildings. Photograph: Dom Moore.


