We are architects.

We listen.
We learn.
We design.

We make spaces better, healthier and more inclusive.

We add value.

We also enjoy what we do.

Principally we listen to our clients. Without them we wouldn’t be in business. We learn what their objectives for the project are, we help them write their brief, we must also listen and learn from the site, the history, the local planners, the local community and neighbours, the weather, the environment, the regulations, local craftsman and builders, bank managers and finally ourselves (it is amazing how much you can learn from yourself)

A bit about Studio Hearth...


Hearth is a creative architecture and design studio, committed to producing beautiful and environmentally conscious buildings. We are not bound by pre-conceived ideas or an architectural agenda.

We offer full Architectural services from conception to completion along with specialist advice on sustainable design and its integration into the historic built environment.

Our objective is to create thoughtful and pragmatic buildings and homes that respond not only to the client's needs and budget but to the location and wider society.

Our manifesto, what we believe in, can be found here.

A bit about Jonny...

The studio was founded in 2012 by Jonny Marrion in London before moving to Wiltshire in late 2015. He spent several years working for high profile practices before deciding to set up his own studio to curate a portfolio of designs true to his deeply sustainable philosophy.


Jonny has recently spent a significant time running and delivering construction projects 'on site' to help further his understanding of costs, complexity and the process once the drawings leave the studio. This has given him a valuable insight that has been fedback into his design process and thinking.

Jonny is a RIBA Chartered Architect, is on the RIBA Conservation Register and is also a part time teaching fellow at the University of Bath's Department of Architecture and Civil Engineering. He also keeps bees, plays cricket (badly) and grows excellent courghettes.

"We were delighted with the plans that Hearth created for the rear conversion of our terraced house. Jonny provided us with various creative options, all within the parameters of our brief...his enthusiastic and knowledgable nature made the process of planning and builder selection far more comfortable and ultimately perfect for our needs. Jonny's overall care for us as clients was spot on, and made a potentially difficult process feel actually very enjoyable!"

Paul & Katie (Client)

"...Jonny understood my requirements and budget and delivered a fantastic extension which exceeded my original expectations. I formed a good working relationship with Jonny through out the process and welcomed his feedback and clear instructions at each stage. I realise that his capabilities stretch beyond the minimum level of my extension project but feel that he gave me the same attention to detail as that of his larger projects"

Annette (Client)