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Extension Architect

At Extension Architect, we believe that great design should reflect the character of a city. Our team of skilled architects creates bespoke solutions that combine functionality with unique aesthetics. Whether it’s a traditional Victorian renovation or a modern commercial building, we bring creativity and attention to detail to every project. As a leading architectural firm in London, we are committed to delivering exceptional results that exceed our client’s expectations. Trust us to bring your vision to life with innovative design and expert construction services.

Building The Future

Extension Architect – Where design meets character. Our team of expert architects in London create bespoke solutions for residential and commercial projects. From period renovations to modern builds, we prioritize functionality and aesthetics to exceed our clients’ expectations. Trust us to bring your vision to life with personalized attention and expert construction services.

Free Initial Site Consultation

Our process begins with a free initial site consultation. Our architecture planning consultant will take the time to understand your needs so we can deliver our service in the best way that fits you.

Concept and Planning Design

Our experienced architectural planners will then develop a set of drawings reflecting the ideas discussed. We will prepare and submit the planning application on your behalf and also work closely with the Local Authorities to overcome the challenges that might arise. London Architect

Technical Design

Building Regulation Drawings in preparation for the construction works. We also work in collaboration with Building Control to ensure the scheme developed is aligned with the current legislation. London Architect

Project Management

We will guide you through every step of the process. We will work with you to ensure that the right team and materials are in place to make your dream project a reality. London Architect

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The Process

Through a unique combination of engineering, construction and design disciplines and expertise.

Initial SitesConsultation

Studio 20 Architecture offers a free site consultation! We specialise in planning applications, building regulation drawings, architectural design & project management.

ConceptPlanning Design

Right after the briefing, we develop a set of drawings reflecting the ideas discussed and your needs.


Once planning approval is received, we produce a set of detailed Building Regulation Drawings in preparation for the construction works.


For the pre-construction phase, we create a tender pack. In this phase, all materials and finishes will be specified internally.

Fill in the details button to receive a quote.

News from our blog

Welcome to our architect blog news! Here, we’ll be keeping you up to date with the latest news and trends in the world of architecture. From exciting new building projects to innovative design concepts, we’ll be covering everything that’s happening in the industry. Our blog is designed for anyone with an interest in architecture, whether you’re a professional in the field or simply someone who appreciates beautiful buildings and spaces. We’ll be sharing our insights and opinions on the latest developments in the world of architecture, so be sure to check back often for our latest updates. Thank you for joining us on this journey through the world of architecture!

Unraveling the Tapestry: A Deep Dive into Kingston Norbiton Building Regulations In the heart of Greater London lies the picturesque enclave of Kingston Norbiton, where time-honored architecture meets modern sensibilities. Steeped in history and pulsating with contemporary life, this vibrant community is not just a testament […]
Navigating the Realm of Kingston Norbiton Planning Permission: Your Comprehensive Guide Kingston upon Thames, with its vibrant culture and historical significance, stands as a beacon of architectural diversity and urban development. Within this vibrant borough lies Norbiton, a charming district boasting a unique blend of residential […]
Kingston Norbiton New Builds: Redefining Contemporary Living in a Timeless Locale Nestled along the banks of the serene Thames, Kingston Norbiton exudes a unique charm that seamlessly blends history with modernity. As the heart of Kingston upon Thames, this vibrant neighborhood has witnessed a remarkable transformation […]