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Research & Data

London Planning Data

Original research and data analysis for London homeowners navigating the planning system. Approval rates, processing times, refusal trends, and policy guides — compiled by our MCIAT-chartered team.

Architectural technologist reviewing planning drawings — planning drawings in London
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Planning timeline on a tablet
Data

Planning Processing Times: Which Boroughs Are Slowest?

The 8-week statutory target is missed by most London boroughs. We map the reality — median weeks from validation to decision across all 33 councils.

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Architect correcting planning drawings
Analysis

Top 5 Reasons London Planning Applications Get Refused

Over 80% of all household refusals in London share five root causes. Understanding them is the most direct path to a policy-ready submission.

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Victorian terrace architectural detail in a London conservation area
Guide

Conservation Areas in London: Impact on Your Planning Application

62 conservation areas in Kensington and Chelsea. 7 in Barking. The density of conservation designations in your borough defines your planning risk profile.

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Design tools and architectural drawings
Tool

Does Your Project Need Planning Permission?

Use our free permitted development checker to find out whether your extension, loft conversion, or outbuilding needs a full planning application.

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