Approved planning applications · October 2026
Extending in Merton: what the council approves
Build Team has secured approval for 27 projects in Merton: 21 loft conversions and 6 ground floor extensions, across 10 postcode districts. The median approved floor area is 23.97 m². Merton Council generally allow a boundary wall height of up to 2.3m.
What Merton council is like to work with
Will need to engage with the Council early to get the best result and decisions can be quick.
Side Returns are mainly allowed, others are subjected to examples in the area.
Boundary wall height
Merton Council generally allow a boundary wall height of up to 2.3m.
Design considerations
If end of terrace, then the design will need to mindful of security and neighbourhood watch.
Conservation areas
Look at conservation policies
Guidance from Build Team's design team, based on applications we have submitted in this borough. Council policy changes: check the current local plan before you rely on it.
What has been approved in Merton
| Type of project | Approved | Share |
|---|---|---|
| Loft conversions | 21 | 78% |
| Ground floor extensions | 6 | 22% |
| Houses / flats | 27 houses, 0 flats | |
| Median floor area | 23.97 m² (average 34.1 m²) | |
Postcode districts covered: CR4, CR7, SM4, SW11, SW16, SW17, SW18, SW19, SW20, SW9
Our services in Merton
- Loft conversions 21 approved here
- Side return extensions
- Rear extensions
- Wraparound extensions
- Kitchen extensions
- Party wall agreements
Not sure which fits your house? Compare all services and typical costs.
Planning an extension in Merton?
We handle the application from survey to decision, and we know what this borough approves. Start with a free 30-minute consultation.
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