Covering Bexley
Bexley is about 13 miles east of London. We also cover Welling (2 miles to the north-west), Dartford and Swanley.
Homes in London
Much of London’s housing is Victorian and Edwardian terraces, which is why side return extensions, rear dormers and mansards are so common. Many streets are in conservation areas, and several boroughs use Article 4 directions that remove some permitted development rights.
What does an upward extension involve?
An upward extension adds a new storey on top of an existing house, most often turning a bungalow into a two-storey or chalet-style home. It can double the floor area without using any of the garden.
- Structural survey of walls and foundations
- Roof removal and temporary weather protection
- Full fit-out of the new rooms
What is the guide price for an upward extension in Bexley?
What bungalow and upward extensions typically cost. These are guide ranges; the written quote for your house replaces them.
| Bungalow and upward extensions | Guide price incl. VAT |
|---|---|
| Chalet conversion with dormers (total) | £45,000 to £85,000 |
| New first floor, standard specification | £2,200 to £2,800 per m² |
| New first floor, good specification | £2,800 to £3,300 per m² |
| New first floor, high specification | £3,300 to £3,800 per m² |
How is an upward extension approved in Bexley?
English projects need planning clearance from the local council, building regulations sign-off from building control, and party wall notices where the work is on or near a shared boundary. We prepare and manage all three.
In England, Class AA permitted development allows an extra storey on many detached and semi-detached houses built between July 1948 and October 2018, subject to a prior approval application covering design, neighbours’ amenity and other matters.
What can change the price or programme?
- Some bungalow foundations need strengthening before a storey can be added.
- The staircase takes space from the ground floor plan.
From first call to completion
- Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
- We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.
Bungalow and upward extensions: common questions
Is an upward extension permitted development?
In England, Class AA allows it on many post-1948 houses through a prior approval application. Elsewhere planning permission is needed.
How long does it take?
About 12 to 24 weeks on site.
Can you visit a house in Bexley to quote?
Yes. After a short call we arrange a site visit to measure up and agree what the design needs to do, then send a written price.
Bungalow and upward extensions in nearby towns
- Bungalow and upward extensions in Welling
- Bungalow and upward extensions in Dartford
- Bungalow and upward extensions in Swanley
- Bungalow and upward extensions in Eltham
Learn more about bungalow and upward extensions, or see every project we cover in Bexley.

