We Are
Residential Design Specialists
Projects Done
300+
Years Of Experience
20+
Areas We Served
35
Welcome to Studio : MASS, your trusted home extension designers in London. We help homeowners extend their homes and secure planning approval with confidence. As experienced residential design & extension consultants, we provide everything you need to create a space that works beautifully and complies fully.
Do you have an idea for an extension or refurbishment project but don't know where to start? We offer a free architectural advice call to discuss your project and guide you in the right direction.
Just click the button to book your call now.
How We Can Help You
From your first idea to planning approval, we provide clear guidance at every stage of your project. As residential design & extension consultants in London, we help homeowners make confident, informed decisions that lead to practical, build-ready solutions.
Design
We will visit your home to discuss your ideas, survey and measure the property and then produce a design for your space.
Develop
We will submit and manage all applications to ensure the design gets planning and building regulations approval.
Support
We will connect you with consultants and contractors as well as support you throughout the construction of the design.
What We Do At Studio : Mass
We specialise in home extensions and architectural design, guiding homeowners through planning, design, and construction to create practical, stylish, and fully compliant residential spaces.
Home Extension & Refurbishment Services
We design and deliver a wide range of home extensions and refurbishments, including rear, side, kitchen extensions and more, tailored to your property, lifestyle, and local planning requirements.
Architectural Design & Planning Services
We provide professional architectural design services, feasibility studies, and planning permission support and more to help homeowners understand what’s possible and move forward with confidence from early ideas to approvals. Contact us to know in detail.
Start with a Free
Architectural Advice Call
Kickstart your home extension project with a free architectural advice call. Our team of experienced residential design & extension consultants in London guide you from idea to planning approval confidently.
Why Choose Us
Studio : MASS is your trusted residential design studio for home extensions in London, delivering practical, compliant, and innovative residential designs. We guide homeowners through planning, design, and construction with expert consultancy at every step.
Expertise & Experience
Our team of skilled residential design & extension consultants brings years of experience in London home extensions, ensuring practical, compliant, and beautifully designed spaces tailored to your needs.
End-to-End Support
From initial concept to planning approval and construction, we provide comprehensive home extension design and planning services, supporting homeowners at every stage of their project.
Tailored Solutions
We create bespoke solutions for your property, combining functional layouts and stylish designs. As trusted home extension designers in London, we deliver spaces that suit your lifestyle perfectly.
Hassle-Free Planning
We manage planning submissions, building regulations, and approvals, ensuring a smooth, stress-free process. Our residential design consultants in London help you avoid delays and complications.
Hear What Our Customers Say About Us
Discover how homeowners in London experienced our expertise. Here are a few honest feedback on our home extension design and planning services.
J
1 Month ago
James Whitaker
Really impressed with how smooth the whole extension process was. They made planning approval much easier than I expected.
J
1 Month ago
Oliver Bennett
The team at Studio : MASS made our kitchen and rear extension stress-free. Designs were spot on, and they explained everything clearly from start to finish.
J
1 Month ago
Henry Lawson
From the initial chat to planning approvals, everything felt well organised. The advice we got was practical and easy to follow.
J
1 Month ago
Thomas Fletcher
Couldn’t have asked for a better experience. They handled all the planning and design details, so we didn’t have to worry.
J
1 Month ago
Edward Collins
The free consultation really helped us understand what was possible. Felt like we had a clear roadmap for our extension.
J
1 Month ago
William Harper
Listened to what we wanted and delivered a functional, stylish extension. Really impressed with how they navigated local planning rules.
J
1 Month ago
George Thornton
Very professional and reliable. Studio : MASS kept us updated at every step, and the design turned out just how we imagined it.
J
1 Month ago
Alexander Reynolds
Highly recommend for anyone planning a home extension. The process was smooth, efficient, and the outcome exceeded our expectations.
Get In Touch
Ready to start your home extension project? Contact us today for expert guidance from one of London’s most trusted residential design studios for home extensions and take the first step towards your dream space.
Call (+44) 01636 642 872
[Meetings by appointment only]
Northgate Business Centre : Newark, NG24 1EZ
Call (+44) 020 8638 6727
[Meetings by appointment only]
Hoxton Mix : 86 - 90 Paul Street, Third Floor, London, EC2A 4NE
Follow Us On:
Contact Us
Let us know how we can help you!
