Basement works at W11 2HR
1. Your site at a glance
Six designations apply at this address — and one of them decides how this project proceeds. The Royal Borough's Article 4 direction covering basements removes the permitted development route for excavation, so this scheme needs a full planning application from day one. The address also sits in the Ladbroke conservation area, with a tree preservation zone and two further Article 4 directions over external alterations. None of this is unusual for this part of W11; it sets the standard your application will be judged against.
- Kensington and Chelsea AQMAView the official record →
- tree-preservation-zoneView the official record →
- LadbrokeView the official record →
- Article 4 - No 41Removes permitted development rights: Minor alterations in Conservation Areas including works to windowsView the official record →
- Article 4 - No 100Removes permitted development rights: BasementsView the official record →
- Article 4 - No 68Removes permitted development rights: Minor alterations in Conservation Areas including works to windowsView the official record →
2. What applies here
Heritage carries great weight — NPPF paragraph 212
The front lightwell is the sensitive element here: it changes how the building meets the street inside the Ladbroke conservation area. Expect the visible details — railings, grilles, planting, stone — to be weighed against the area's character, with the policy below setting the bar.
“When considering the impact of a proposed development on the significance of a designated heritage asset, great weight should be given to the asset’s conservation (and the more important the asset, the greater the weight should be).”NPPF paragraph 212 — 16. Conserving and enhancing the historic environment · read the source →
London-wide drainage policy reaches basements — London Plan Policy SI 13
Basement excavation changes how a site handles water, and the London Plan's drainage policy applies across every borough. Expect the council to ask how run-off is managed and to favour green solutions over hard engineering — worth designing into the lightwell and garden reinstatement from the start.
“surface water run-off is managed as close to its source as possible. There should also be a preference for green over grey features”London Plan Policy SI 13 — Sustainable drainage (Chapter 9 — Sustainable Infrastructure) · read the source →
You will need a heritage statement — NPPF paragraph 207
National policy requires applicants to describe the significance of affected heritage assets. In practice: a short, proportionate heritage statement covering the building, the conservation area, and how the basement and lightwell respect both. Schemes in this borough rarely succeed without one.
“In determining applications, local planning authorities should require an applicant to describe the significance of any heritage assets affected, including any contribution made by their setting.”NPPF paragraph 207 — 16. Conserving and enhancing the historic environment · read the source →
Protected trees meet excavation — NPPF paragraph 136
A tree preservation zone intersects this address, and excavation near protected root systems is closely scrutinised. Plan for an arboricultural impact assessment alongside the structural method statement — and for the basement footprint to respect root protection areas.
“Trees make an important contribution to the character and quality of urban environments, and can also help mitigate and adapt to climate change.”NPPF paragraph 136 — 12. Achieving well-designed places · read the source →
The conservation area is not a blanket ban — NPPF paragraph 220
National policy is explicit that not every part of a conservation area contributes equally to its significance. A well-argued application uses this: demonstrate what your frontage contributes, and design the visible elements to preserve exactly that.
“Not all elements of a Conservation Area or World Heritage Site will necessarily contribute to its significance.”NPPF paragraph 220 — 16. Conserving and enhancing the historic environment · read the source →
3. Potential blockers
Article 4 direction
An Article 4 direction (“Article 4 - No 41”) removes permitted development rights here for: Minor alterations in Conservation Areas including works to windows. Work in those categories needs a full planning application even where it would normally be allowed without one.
Article 4 direction
An Article 4 direction (“Article 4 - No 100”) removes permitted development rights here for: Basements. Work in those categories needs a full planning application even where it would normally be allowed without one.
Article 4 direction
An Article 4 direction (“Article 4 - No 68”) removes permitted development rights here for: Minor alterations in Conservation Areas including works to windows. Work in those categories needs a full planning application even where it would normally be allowed without one.
4. Things to consider
Air Quality Management Area
This address is in an Air Quality Management Area (Kensington and Chelsea AQMA); air quality impacts may be a material consideration for some projects.
Protected trees (TPO)
Protected trees () are present. Works to protected trees need consent, and developments are expected to protect them.
Conservation area
This address is in the Ladbroke conservation area. Your council must give special attention to preserving or enhancing the area's character, which raises the design bar for external changes.
5. Approved nearby
Of the 142 decided basement applications within 1 km of this address since 2015, 116 were approved and 26 refused — an 82% approval rate. Basements are an established project type in this part of the borough: the Article 4 direction means every one is tested through a full application, and the approval rate reflects well-prepared schemes rather than a low bar. Past decisions show how this council assesses similar proposals; they are not a guarantee of any outcome.
- Approved · Installation of external stairlift including rebuilding of external steps to basement flat (2026-05-08) council record →
- Approved · Proposed rear extensions to ground and basement flats (2025-11-21) council record →
- Approved · Refurbishment of lower ground floor and basement level flat, including replacement conservatory and internal alterations (2024-12-11) council record →
- Approved · Refurbishment of lower ground floor and basement level flat, including replacement conservatory and internal alterations (2024-12-11) council record →
- Approved · Basement extension and replacement of rear extension, along with minor alterations to front elevation (2024-10-21) council record →
- Approved · Construction of a swimming pool at basement level (and associated plant within front enclosure). (2022-12-08) council record →
- Designations are read live from planning.data.gov.uk at generation time. Some councils have not yet published every dataset; absence of a designation here is absence from the national index, not a guarantee none exists.
- This example was generated with national policy and live designation data. Purchased reports also include the council's adopted Local Plan policies where the plan can be machine-read — and say so plainly where it cannot.
This is a professional screening report built from official public data. It is not legal advice, a planning decision, or a substitute for pre-application advice from your local planning authority. Always confirm requirements with your authority before starting work.