Updated October 2026
In short: Lewisham planning applications go in through the national Planning Portal and appear on Lewisham Council's online planning register, where you can follow consultation and decisions. Victorian and Edwardian streets in areas such as Brockley, Ladywell, Catford and Sydenham include several conservation areas, which affects lofts, windows and front gardens.
| Project | Likely route in Lewisham |
|---|---|
| Rear extension on a house | Permitted development or prior approval; householder planning if outside limits |
| Loft conversion | Often permitted development; planning in conservation areas or where rights are removed |
| Window replacement in a conservation area | May need planning if under an Article 4 direction |
| Converting a house into flats | Full planning; family housing policies and space standards apply |
| HMO conversion | Check Article 4 directions and HMO licensing |
Before you apply
- Look up the planning history of your street
- Check conservation area and Article 4 status
- Speak to neighbours about your plans
- Consider a Lawful Development Certificate for permitted development
- Use clear, accurate drawings
How Fraser Bond helps
- Advice on which works add value in Lewisham
- Introductions to local architects and planning consultants
- Sales and lettings of improved homes
Related guides
- Southwark planning applications
- Greenwich planning applications
- Discretionary Housing Payment Lewisham
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