How to Get Planning Permission in London: The 2026 Guide

Securing planning permission in London can feel opaque — a web of policies, documents and council procedure. It isn't random, though: applications succeed on preparation, and most refusals are visible in advance to anyone who knows where to look. This guide breaks the process into five phases, with the tactics we actually use, updated for 2026.

Before the phases, the ground rules. A householder application costs £548 from 1 April 2026 and targets a decision in 8 weeks; most other minor applications (changes of use, small schemes) cost £610+ and run to the same clock; major schemes pay more and run to 13 weeks. Submitting via the Planning Portal adds its £91 service charge (so £639 / £701 all-in). Fees are non-refundable — which is the financial case for everything that follows.

Phase 1 — Research and feasibility

1. Read the policies before you design. The borough's Local Plan and SPDs set what's allowed — extension depths, garden retention, parking, conversion rules. London's 33 boroughs genuinely differ, and the pitfalls that sink applications usually start here.

2. Map the constraints. Conservation area, listed building, flood zone, Green Belt, protected trees, Article 4 Directions — each changes the rules. Check the council's policies map, the Flood Map for Planning, Historic England's list and the TPO register before falling for a property.

3. Mine the planning history. The council's planning register shows what's been approved and refused nearby — and the officers' reports tell you why. A neighbour's approval is the cheapest precedent you'll ever buy; their refusal is a free warning. (Our research on what actually gets approved across London shows how much approval odds vary by borough and type.)

4. Identify your material considerations early. Officers must weigh site-specific context — established patterns of similar development, fallback positions, the site's quirks. Know what's in your favour before you need it.

Phase 2 — Design and strategy

5. Appoint designers who know the patch. Borough fluency — knowing how this council interprets its policies — is worth more than style. It's the difference between a scheme designed to be approved and one designed to be admired.

6. Bring in a planning consultant for the contentious cases. Listed buildings, larger schemes, contemporary designs in conservative streets, anything with a refusal history: these are won on argument as much as drawing.

7. Design sustainability in, not on. Energy performance, green roofs, permeable surfaces and urban greening sway marginal decisions — and for most non-householder schemes, 10% Biodiversity Net Gain is now statutory, so the ecology input belongs at concept stage, not validation.

8. Establish your permitted development fallback. Work out what you could build without permission — then secure it formally with a Lawful Development Certificate (Proposed). A certificated fallback is honest leverage: officers weigh your application against what you're entitled to build anyway. (Start with our householder PD guide.)

9. Design for the neighbours you have. Daylight, outlook, privacy: most objections are predictable from a site visit. Angled walls, obscure glazing, set-downs and considered massing defuse them before they're written.

10. Sequence tactically. On larger projects, phase the applications — secure the principle with the more approvable elements first, then build on the consent.

Phase 3 — Technical preparation

11. Make the drawings do the arguing. Scaled existing-and-proposed plans, north point, scale bar, context elevations, boundary treatments, bins and cycles shown. Officers read competence off the pack before they read the scheme.

12. Match the validation checklist exactly. Every council publishes one; invalidation is the silent schedule-killer. Flood risk assessments (Zones 2–3), heritage statements, transport notes, ecology surveys, BNG information — supply what this borough requires, first time.

13. Tell the story in the Design & Access Statement. Short, specific, addressed to the policies the officer must apply. A page of "how this scheme meets DMD X and protects the neighbour at No. 12" outworks ten pages of adjectives.

Phase 4 — Engagement and submission

14. Brief neighbours just before you submit. Early enough to be a courtesy, late enough that the scheme is settled. Most objections soften when people have seen the drawings and met the applicant.

15. Use pre-application advice where it earns its fee. For sensitive or unusual schemes, a pre-app de-risks the design. For simple householder work it can add weeks for little return — judge it case by case, and arrive with real drawings, photos and a rationale.

16. Talk to the specialists. Tree officers, conservation officers and highways engineers will often give an informal steer — and pre-empting their formal comments is worth days of post-submission negotiation.

Phase 5 — During and after the decision

17. Be useful during the application. Respond to officer queries fast, and if there's a site visit, be there — practical context, courteously offered, lands better in person.

18. Know the committee route. Most London applications are decided by officers under delegated powers; objections or ward-member call-ins push schemes to committee. If you're heading there, your local councillor and a tight one-page case both matter.

19. Negotiate with your fallback on the table. Where you hold a certificated PD fallback, deploy it: a slightly better-designed application is an easy approval against a PD scheme the council can't stop.

20. If refused: read, fix, choose the route. A refusal notice tells you exactly what failed. Often the fastest path is a targeted revision and free resubmission within 12 months. Where the refusal is wrong on policy, appeal — 12 weeks from the decision for householder appeals, 6 months for most others. Appeals are won on the same thing applications are: evidence against policy.

The honest summary

Planning permission in London rewards preparation disproportionately. Read the policy, design to it, evidence it, and manage the people — and the 8-week clock usually runs your way. Skip a phase and you pay for it in months, not days.

Bashkal manages this entire sequence — feasibility, design, submission, negotiation and appeal — for homeowners, landlords and developers across London. Wherever you are in the process, contact us and we'll tell you what your application actually needs.

Verified 5 June 2026: fees per the Planning Portal schedule (1 April 2026); statutory determination periods and appeal deadlines; Biodiversity Net Gain requirements. Procedures vary by borough — confirm the position for your specific application.