House extensions in Richmond and London

Beautiful spaces that improve the way you live and add value to your home, contemporary or traditional.

Glazed rear extension of a terraced house in Twickenham seen from the garden

Extensions shaped around how you live

TW10 Architects have helped many families extend their homes over the years, from modern dwelling typologies to more traditional house conversions. Our reputation has been built on designing beautiful spaces that improve the way you live and add value to your home.

We deliver contemporary or traditional designs that suit your requirements and style. Whether you are renovating, extending or buying, we can give you a wealth of information that makes the next step far less daunting.

Alongside Richmond, we have current house extensions in London, including Maida Vale, Kensington and Chelsea, Westminster and Chiswick.

How it works

From the first visit to your home to choosing the builder who brings it to life.

  1. 1

    We visit your home

    We are always delighted to pop along and take a look at your project, and give you unbiased advice on what might, or might not, be possible from a planning and a design point of view.

  2. 2

    Design options

    Our design process lets us explore various design options with you before we start the detailed design, so you can be confident the final design really is right for you.

  3. 3

    Planning permission

    After the initial consultation and design proposals, we help you through the planning process, submitting all the necessary documentation on your behalf.

  4. 4

    Building control and builder

    We take your extension through building control and, ultimately, help you select the right builder for your project.

Planning know-how

  • We are RIBA Chartered Architects with wide experience of local guidance, permitted development, planning procedures and the technical requirements for building control.
  • In Twickenham we pushed the boundaries to obtain a deeper extension than the local guidelines approve: 10 metres, with a loft conversion.
  • In Hampton our 6m pitched roof extension went in under the larger home application type.
  • We have been successful in conservation areas with rear and side house extensions, loft conversions and changes of use.
  • After one council refusal, we documented a client's case and secured a successful planning appeal.

Clients on their extensions

“TW10 Architects took time to understand what our needs were and then gave us a set of design options which improved upon what we originally asked for. We were delighted with the efficient and flexible way our project was handled.”
Jaqui & DenisOrangery extension
“We have greatly benefited from TW10 Architects' services. They were full of suggestions and ideas about how to maximise our space. TW10 Architects went over and above our expectations. We would highly recommend their services.”
Lucinda & GarethExtension and garage conversion

Book a home consultation

We are always delighted to pop along and take a look at your project, and talk you through what might be possible.