Two-storey extensions in Morden
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Morden.
Morden at a glance
- Postcode districts
- SM4
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- St Helier (1.3 miles), Mitcham (1.3 miles), Wimbledon (1.7 miles), Worcester Park (2.4 miles)
- Approvals
- Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission.
We cover Morden (SM4) and the places around it, including St Helier (1.3 miles), Mitcham (1.3 miles) and Wimbledon.
Extensions available in Morden
Two-storey rear extensions
For homes in Morden: typical guide from £67,000.
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Two-storey side extensions
Guide from £103,500 in Morden, including VAT.
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Two-storey wraparound extensions
Guide from £144,500 in Morden, including VAT.
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Part single, part two-storey extensions
Our London guide starts at £86,500 for this type.
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Extensions over a garage
Our London guide starts at £38,000 for this type.
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First-floor extensions
For homes in Morden: typical guide from £30,000.
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Two-storey extensions for semi-detached houses
Our London guide starts at £67,000 for this type.
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Two-storey extensions for detached houses
Guide from £103,500 in Morden, including VAT.
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Kitchen extensions with bedrooms above
From £67,000 (before kitchen units) in Morden. Free visit to firm it up.
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Extra bedroom and en-suite extensions
From £67,000 (plus en-suite) in Morden. Free visit to firm it up.
Learn moreWhich type suits your house?
Start with what you need the space for. Bedrooms and an en-suite upstairs with a bigger kitchen below is the classic two-storey brief, but in Morden we also design annexes, home offices and bedrooms over garages.
Also available in Greater London
- Two-storey front extensions
- Two-storey extensions for end-of-terrace houses
- Two-storey annexe extensions
- Garage conversions with a room above
- Two-storey extension plans and drawings
- Planning permission for two-storey extensions
- Structural engineering for two-storey extensions
- Building regulations for two-storey extensions
- Party wall notices for extensions
- Design and build two-storey extensions
Rules for Morden
Morden is in England. Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission. Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
The full England rules explained
Questions about extensions in Morden
Do you cover Morden?
Yes. We cover Morden (SM4) and the surrounding area, including St Helier and Mitcham. The first site visit is free.
What does a two-storey extension cost in Morden?
Using our London guide, a two-storey rear extension with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) is about £67,000–£90,500 including VAT. An extension over a garage is about £38,000–£55,000.
Which other places near Morden do you cover?
Everywhere around it, including St Helier (1.3 miles), Mitcham (1.3 miles) and Wimbledon (1.7 miles), and the rest of Greater London.