Journal
Planning, explained.
Practical guides written by the architect for South London homeowners. General information, not advice on your property — call us for that.
2026-09-01
Do you need planning permission for an extension in South London? The 2026 guide
Permitted development limits, the larger home extension route, conservation areas and the 45-degree rule — explained borough by borough.
2026-08-15
Planning refused? What to do in the first 30 days
Read the decision notice, understand the reasons, then choose between a free resubmission and an appeal. A short, practical guide.
2026-07-20
Garden offices and the planning rules: what you can build without permission
Height limits, the 50% garden rule, 'incidental' use, and why a lawful development certificate is worth having.