Bungalow extensions in West Molesey
If you live in West Molesey and want more space without moving, a bungalow extension is one of the most practical ways to get it. We handle the drawings, approvals and the build.
- Guide price in West MoleseyFrom £29,000 inc VAT
- PlanningSingle storey often permitted development
- Build time10–18 weeks on site
- Postcode districtsKT8, KT12, TW16

Guide prices for West Molesey
Labour and material costs vary across the UK, so for West Molesey we use our South East England factor (×1.12). The ranges include VAT and exclude design, structural and council fees.
Typical rates in West Molesey: £1,960 to £3,810 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 5 m 15 m² | £29,000 – £35,500 | £34,000 – £45,000 | £43,500 – £57,500 |
| 4 m × 6 m 24 m² | £47,000 – £56,500 | £55,000 – £71,500 | £69,500 – £91,500 |
| L-shape 35 m² | £68,500 – £82,500 | £80,000 – £104,000 | £101,500 – £133,500 |
For a figure based on your own dimensions, use our guide-price tool.
Is a bungalow extension right for your house?
- Families wanting more space on one floor
- Bungalows on larger plots
- Homeowners planning for later life
Working in West Molesey
Across KT8, KT12, TW16, we can visit, measure and advise. Nearby, we also take on projects in East Molesey (1 mile), Sunbury-on-Thames (2 miles), Walton-on-Thames (2 miles), Esher (2 miles).
For homes towards Greater London, Hampton is around 1 mile away. In the South East, plenty of houses have already been extended once, which makes checking the remaining permitted development allowance an important early step.
Do I need planning permission in West Molesey?
In England a single-storey extension to a bungalow follows the normal permitted development limits (3 m or 4 m, or 6 m and 8 m through prior approval). Adding a first floor always needs planning permission.
The planning position for a specific West Molesey address depends on its history and any designations, which is why we check it at the first visit.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
From first visit to completion
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions people ask about bungalow extensions
Do I need building regulations approval in West Molesey?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
How long does a bungalow extension take to build in West Molesey?
On site, typically 10 to 18 weeks once approvals are in place. Before that, allow 6–14 weeks design and approvals.
Do you cover all of West Molesey?
Yes. We cover West Molesey and the surrounding parts of Surrey. Site visits are free and there is no obligation.
Can I extend a bungalow without planning permission?
In England a single-storey rear extension to a bungalow follows the same permitted development limits as a house: 3 m or 4 m, or up to 6 m or 8 m through prior approval. Adding a storey always needs planning permission.
How much does a bungalow extension cost?
Our guide range for single-storey work is about £1,960 to £3,810 per m² including VAT. Going upwards is priced after a structural survey.
Book a free site visit in West Molesey
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.