Improving a home in the City of London? What Barbican and Golden Lane flat owners can change, listed building consent, conservation rules and 2026 costs.

Extending a home in Barking and Dagenham? 2026 costs per m², permitted development rules, the new Becontree Article 4 Directions and when you need permission.

Extending a home in Bexley? 2026 costs per m², permitted development rules, the 23 conservation areas and the streets where Article 4 Directions apply.

Extending a home in Havering? 2026 costs per m², when you need planning permission, Gidea Park's Article 4 rules, and the council design guidance that applies.

Extending a home in Redbridge? 2026 costs per m², permitted development rules, the borough's 16 conservation areas and Article 4 streets, explained honestly.

Extending a home in Waltham Forest? 2026 costs per m², permitted development rules, conservation area Article 4 directions and the Highams Park estate rules.

Extending a home in Newham? 2026 costs per m², permitted development rules, the nine conservation areas and free council pre-application advice explained.

Extending a home in Tower Hamlets? 2026 costs per m², 58 conservation areas, mansard roof rules in Bow and permitted development, explained honestly.

Extending a home in Westminster? 2026 costs per m², why almost every street is conservation area or listed, and the city-wide basement planning rules explained.

Extending a home in Kensington and Chelsea? 2026 costs per m², conservation area and Article 4 rules, and the borough's strict basement policy explained.

Extending a home in Hammersmith & Fulham? 2026 costs per m², conservation area rules, the basement Article 4 Direction and when you need planning permission.

Extending a home in Hillingdon? 2026 costs per m², when you need planning permission, conservation area rules and the borough-wide 4-metre Article 4 rule.

Extending a home in Hounslow? 2026 costs per m², when you need planning permission, and conservation area rules from Chiswick to Isleworth and Feltham.

Extending a home in Sutton? 2026 costs per m², permitted development rules, the Sutton Garden Suburb Article 4 and a 1984 roof alterations direction, explained.

Extending a home in Croydon? 2026 costs per m², permitted development rules, Article 4 areas like Chatsworth Road, and honest feasibility advice.

Extending a home in Bromley? 2026 costs per m², permitted development rules, 47 conservation areas and what an Area of Special Residential Character means.

Extending a home in Royal Greenwich? 2026 costs per m², permitted development rules, conservation areas and where Article 4 directions restrict works.

Extending a home in Lewisham? 2026 costs per m², when you need planning permission, and how Article 4 rules in Blackheath, Brockley and Telegraph Hill work.

Extending a home in Southwark? 2026 costs per m², the borough's 48 conservation areas, the Sunray Estate Article 4 and the Dulwich Estate rules, explained.

Extending a home in Lambeth? 2026 costs per m², when you need planning permission, conservation area and Article 4 rules, and the council's design guidance.