Approved planning applications · October 2026
Extending in Lewisham: what the council approves
Build Team has secured approval for 145 projects in Lewisham: 114 loft conversions and 31 ground floor extensions, across 13 postcode districts. The median approved floor area is 28.4 m². We would generally design schemes with a boundary wall height of 2.3m in Lewisham.
What Lewisham council is like to work with
Lewisham is usually very vocal during the planning window and frequently get in touch with our Designers to negotiate a successful outcome.
Lewisham are very strict on wraparounds and it's very unlikely you would gain consent for one. There are plenty of alternatives such as side infills and rear extensions.
Boundary wall height
We would generally design schemes with a boundary wall height of 2.3m in Lewisham.
Design considerations
In regards to Loft conversions, Permitted Development is usually the best method to gain consent.
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 Lewisham
| Type of project | Approved | Share |
|---|---|---|
| Loft conversions | 114 | 79% |
| Ground floor extensions | 31 | 21% |
| Houses / flats | 136 houses, 9 flats | |
| Median floor area | 28.4 m² (average 32.4 m²) | |
Postcode districts covered: SE12, SE13, SE14, SE15, SE23, SE26, SE3, SE4, SE6, SE7, SE8, SW8, W12
Build Team projects in Lewisham
Inchmery Road
Side Return Extension
Side Return Extension in Lewisham (SE26), over 50 m²
Side Return Extension
Side Return Extension in Lewisham (SE14), 45–50 m²
Side Return Extension
Side Return Extension in Lewisham (SE12), over 40 m²
Side Return Extension
Side Return Extension in Lewisham (SE4), 30–40 m²
Side Return Extension
Loft Conversion in Lewisham (SE13), 25–30 m²
Loft Conversion
Our services in Lewisham
- Loft conversions 114 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 Lewisham?
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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