Free tool
How Long Will My Planning Application Take?
Estimate the full timeline from instruction to planning decision for your London project. Covers measured survey, drawings, validation, consultation and determination — adjusted for conservation areas and listed buildings.
1
Application
2
Borough
3
Timeline
Step 1 of 3
What type of application are you making?
Different application routes have different statutory determination periods. Select whichever fits your project best.
Householder application
Extensions, lofts, dormers — 8-week statutory determination.
Full planning permission
New build, major works, flat conversion — 8 or 13 weeks.
Prior approval
Larger home extension / Class MA — 42 or 56 day clock.
Lawful Development Certificate
Confirm Permitted Development rights — 8 weeks.
Step 2 of 3
Where is the property — and does it have any designations?
Conservation areas and listed buildings add mandatory consultation with heritage consultees, extending the timeline. Complex schemes add review time too.
London borough
Is it in a conservation area?
Is the property listed?
Is this a complex scheme? (basement, many objections expected, structural engineering heavy)
Your timeline
From instruction to decision
Total: —
Complete the steps above to see your indicative timeline.
Phase 1
Preparation
Measured survey of your property, existing drawings produced, proposed drawings designed, design & access statement written, supporting documents assembled.
1–2 weeks
Phase 2
Validation
Application submitted to the Planning Portal. Council checks the submission is complete, fees paid, and all required documents attached before officially registering it.
1–2 weeks
Phase 3
Consultation
Statutory 21-day neighbour and public consultation. Site notice posted, neighbours formally notified, statutory consultees (Highways, Heritage, Trees etc.) asked for comments.
3–4 weeks
Phase 4
Decision
Case officer reviews objections, visits site, drafts a recommendation, and either issues a delegated decision or reports to planning committee.
2–4 weeks
Want to shorten your timeline?
We can start your measured survey and drawings the day you instruct us. Our drawings are validated first-time by 99% of London councils — we know every borough's quirks.
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