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Giovanni Mastromartino Architect

new Home

Experience and Passion

I have been privileged to work on many amazing projects. I will assist you from the concept ideas and planning application throughout the building process, taking care of everything you may need. Whether is a large or small, I will take care of your project as it was my own.

home extensions

Attention to Detail

My love for details and my passion for the overall view of the project will drive me on the path of creating your dreaming space to live, whatever your project or requirements may be.

GMArchitect's Aim

GMArchitect is a small office designing residential spaces aiming to fullfil the client’s dreams. My services involve Architecture and Interior design, so I can take care of your living place from the structure to the last finishes. You will enjoy the exciting and vibrant side of building your new home, extension or little conversion.

Designed and Constructed

designs and Construction
Home Extensions in London
Building services in Kent
Home Extensions in London
Architectural Interior Design


I pride myself on the quality of work I produce and make sure my customers are always satisfied. Here are what my customers
have to say about me and my work.

Andy C.

Added: 26 July 2023
I found Giovanni online after the architect I was recommended told me he wasn’t going to waste his time attending our property, after I told...

Pete B.

Added: 16 July 2023
We were looking for someone to help us design a side edition to the house. We needed a special design to match the period property,...

Chris & Sophie B.

Added: 14 February 2023
It has been a pleasure working with Giovanni on our extension. We had no idea where to start with the planning process but Giovanni helped...

Sebastien L.

Added: 8 February 2023
Giovanni was a recommendation from a friend, his job is at the top standard when I use his service for my extension , really helpful...

Lee A.

Added: 7 February 2023
I stumbled across Giovanni details whilst searching for an architect to help with the plans on my listed property, and I’m very glad I found...

John O. & Lewis L.

Added: 1 November 2022
I found Giovanni online and the reviews were great, I contacted Giovanni and had a conversation with him, Well what can I say !! Giovanni...


Added: 30 October 2022
Giovanni is professional, experienced and responsible! His personal approach makes it so easy to communicate with him! Highly recommended!


Added: 10 October 2022
Giovanni was attentive to our ideas and requirements and managed to fit them to our small space extension. We now have a much more workable...


Added: 1 October 2022
Very focused and pays a lot of attention to details and to the client’s needs. I have known Giovanni for a long time and I...


Added: 19 September 2022
A very creative designer, with a customer-centric approach and that rare ability to ‘fit a quart into a pint pot’ – always vital in making...


Added: 22 June 2022
Hailing from Florence in Italy, Giovanni grew up in the city of architectural masterpieces such as Brunelleschi’s dome and Santa Maria Novella. Ground-breaking architectural design,...

Laurence M.

Added: 15 June 2022
He is a friendly, knowledgeable architect who is very easy to talk to. He listens to what you want and asks the right questions. His...
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