Basement Conversions

If you’re lucky enough to have a basement then why not make use of the space? Our basement services include new installations and renovations so you can gain additional space in your home.
We serve London and surrounding areas.

Many homes have a basement but don’t make very good use of the space. Even if you have a finished basement, you might need a skilled basement contractor and project manager for a remodelling or overhaul. We offer basement planning and design services throughout Greater London and the surroundings, and are happy to offer a free consultation session.

In many cases, a completely new basement can be excavated for an existing home. Summit can help you with the planning, the structural engineering services and the interior design of your new basement space. Note that such excavations often take 12 weeks or more to complete.

Whether your dream basement includes a home office, a wine cellar, a games room or nearly anything else, Summit Architecture’s basement design and planning services can help you create exactly the downstairs space you need. No matter what you select, it will almost certainly add value and practicality to your home.

Types of basement conversions

Partial Basement Conversion
If a basement already exists in a habitable state – below ground level and tall enough to stand in comfortably – it may be a candidate for partial basement conversion. Even if some excavation is required, this often falls under the remit of ‘permitted development’.
Full Basement Conversion

If no basement space exists, you may still be able to build the underground room of your dreams via full basement conversion. This will mean full excavation and structural design to ensure that it presents no danger to the home above, of course!

Subject to planning and practical restrictions, it may even be possible to excavate more than one level. This would add dramatically to the usable living space (and value) of your home.

Get in touch!

Book in for a casual, no obligation chat with one of our consultants who can talk you through each process of your project and how best Summit can help.

Get in touch!

Book in for a casual, no obligation chat with one of our consultants who can talk you through each process of your project and how best Summit can help.

Overview of Services

The Summit scope of services you will need to complete your project

Our Reviews

What you can expect when working with our dedicated team.
This 5* review is for Karim specifically. As the lead structural engineer, he went above and beyond to help us during our build project. We faced a number of challenges throughout the build and Karim was always on hand to provide assistance, day or night, weekend or weekday. It was a pleasure working with him and knowing he was there whenever we needed provided peace of mind.
Katie Crook-Davies
Katie Crook-Davies
Building Regs and Structural Calcs: Quick, responsive and very efficient. Would use again for future building work.
Gr Charlt
Gr Charlt
We asked Summit to help with building regulations plans for a single storey extension with bifold doors and changing various windows including a Juliette style window in the loft facing the garden for a house in North London. The service was great from start to finish. Nicolette was very responsive by email and helped to arrange various things for us. Her colleague Gus who drew up the plans was also incredibly helpful and answered various questions for me even after the plans were drawn. It was a very professional service and they kept to their time estimate.
Yagmur
Yagmur
The team at Summit has helped us with our planning and building regulations designs for our rear single story and loft dormer extensions. Eleni was the architect that was really insightful with her ideas and perspectives which we were not aware of and they've been really great additions to the design. Nicole is super responsive as the account manager and accurate with her details. Overall I think the team are super good and have some great ideas.
Umar Azam
Umar Azam
Quality staff, quality designs, nice outfit to work with.
Bayo Bello
Bayo Bello
We can't thank Oliver enough for making the whole process seem simple to us. From our initial meeting to the plans passing through the local authority he kept us informed all the way. Our circumstances were probably a little different to other peoples as we needed drawings and planning passed asap, Toms experience certainly didnt disappoint .We wouldn't hesitate to recommend Summit architecture and we would definitely use them again if we did any future projects.
Sam Spencer
Sam Spencer
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Our Packages

We understand that all projects have different budgets, choose the level of service that fits you.
Speak to our sales team about what package suits you.

Start Your Dream Project Today!

Book in for a casual, no obligation chat with one of our consultants who can talk you through each process of your project and how best Summit can help.