Wandsworth is one of the most actively renovated boroughs in London. Victorian terraces in Balham getting side returns and loft conversions. Edwardian semis in Southfields with rear extensions reaching into long gardens. Period houses in Putney and Clapham Junction where every street seems to have at least one skip outside. The council knows this - and with 46 conservation areas, many with Article 4 directions restricting external alterations, there's a deliberate framework in place to manage how that renovation happens.
If you're planning work in Wandsworth, checking whether your property sits within a conservation area is the first step. This page covers the local restrictions.
Wandsworth has 46 conservation areas and processes among the highest volumes of householder planning applications in London. If your Victorian terrace in Balham or your Edwardian semi in Southfields is in a conservation area, a rear dormer needs a planning application. But Wandsworth's Article 4 directions target changes visible from highways and public spaces - which means rear work is often unaffected. A rear dormer that isn't visible from the street may still be PD even in a conservation area. Single storey rear extensions within the standard depth limits remain PD everywhere. The council completed a comprehensive review of all conservation area appraisals between 2021 and 2023.
Check your property at wandsworth.gov.uk.
Wandsworth has Article 4 directions in many conservation areas. These restrict external alterations to dwellings visible from highways and public spaces - including changes to windows, doors, roofs, chimneys, and boundary walls. This is one of the more extensive Article 4 regimes among London boroughs.
Crucially, rear alterations not visible from the public realm are not covered by these Article 4 directions in most cases. This means that a rear extension or a garden outbuilding may still be permitted development even within a conservation area with an Article 4 direction.
Our free eligibility check identifies whether your property is in a conservation area or other designated area - the first thing to establish before planning any work.
Wandsworth processes among the highest volumes of householder planning applications in London. The borough's Victorian terraces - Balham, Tooting, Southfields, Earlsfield - are classic extension territory. Rear dormers on these terraces are approved routinely because the precedent is so established. Side returns on wider terraces are the other standard project.
The council's Article 4 directions specifically target "highway-facing" alterations, which means rear work is often untouched by the additional restrictions. A rear dormer that isn't visible from the street may still be PD even in a conservation area. But always check - some streets have views from side roads or public footpaths that bring the rear elevation into the "visible from public viewpoints" category.
For the full national rules, see our guides on extensions, loft conversions, and outbuildings.
Check your property at wandsworth.gov.uk. For Article 4 directions, see wandsworth.gov.uk/conservation-areas. The current householder fee is £548.
Wandsworth-specific
Wandsworth's Article 4 directions target changes visible from highways and public spaces. This means rear alterations are often unaffected. If your project is entirely at the rear of the property and not visible from any public viewpoint, it may still qualify as PD even within a conservation area. Check with the council's conservation team before assuming either way.
The Alton Estate in Roehampton is a twentieth-century housing estate that is itself a conservation area. If you own a house on the estate, the conservation controls are focused on the estate's post-war character rather than Victorian or Edwardian architecture. The council's conservation area appraisal for the Alton Estate provides specific guidance.
PD Assessment Tool
Wandsworth has 46 conservation areas with Article 4 directions that target highway-facing alterations. The free eligibility check identifies your property's status and whether Article 4 restrictions apply. Rear work may still qualify as PD even in a conservation area.
Free eligibility check. Full assessment £47.
Conservation area count verified against London Borough of Wandsworth's published records. National PD rules verified against the GPDO 2015 (as amended). Fees confirmed as of 1 April 2026. This page is for general information only and does not constitute legal advice. Local planning policies and Article 4 directions can change - always check the council's website for the most current information.
April 2026