# Extension Architecture

Architects in London

Extension Architecture is an architectural practice in Roehampton, south-west London. It designs house extensions, loft and basement conversions and new builds, and helps homeowners with planning, building regulations and project management.

- Location: Cobden House, 231 Roehampton Lane, 1st Floor, London, SW15 4LB
- Call: 020 3409 4215
- Email: info@extensionarchitecture.co.uk
- Website: https://extensionarchitecture.co.uk/

## Opening hours

- Monday: closed
- Tuesday: closed
- Wednesday: closed
- Thursday: closed
- Friday: closed
- Saturday: closed
- Sunday: closed

## Services and prices

- House extensions: Price on request
- Loft conversions: Price on request
- Basement extensions: Price on request
- Planning consultancy: Price on request
- Building regulations drawings: Price on request
- Interior design: Price on request
- Project management: Price on request
- 3D visualisations: Price on request

## Questions and answers

### Where is Extension Architecture?

Extension Architecture is at Cobden House, 231 Roehampton Lane, 1st Floor, London, SW15 4LB.

### How do I contact Extension Architecture?

You can call 020 3409 4215, email info@extensionarchitecture.co.uk or visit extensionarchitecture.co.uk.

### What services does Extension Architecture offer?

Extension Architecture lists House extensions, Loft conversions, Basement extensions, Planning consultancy, Building regulations drawings, Interior design, Project management and 3D visualisations.

### How up to date is this information?

HAYObiz last checked Extension Architecture’s address, phone and details on 22 Oct 2026, against the business’s website and Companies House.

Details checked 22 Oct 2026 against the business’s website and Companies House

- <https://extensionarchitecture.co.uk/>
- <https://find-and-update.company-information.service.gov.uk/search?q=Extension+Architecture>
- <https://extensionarchitecture.co.uk/contact-information/>
- <https://extensionarchitecture.co.uk/about-ea-extension-architecture/>

Listing: <https://hayobiz.com/uk/london/extension-architecture>