Ask a council and you’ll hear “eight weeks”. Ask anyone who has actually been through it and you’ll hear a hollow laugh, a longer number, and a story. Both answers are true — they’re just measuring different things.
What the Law Actually Promises
Once an application is validated, the council has a statutory determination period.
Householder & minor applications
Major development
With environmental impact assessment
These are targets the council is measured against, not rights you can enforce on the day. If week eight passes in silence, nothing is granted and nothing is refused — your application simply continues. Between the target and the guarantee sits the system’s great shock absorber: the extension of time.
Two Near-Identical Extensions, Two Different Calendars
Submitted the same month, one is decided in nine weeks, the other in five months.
Before day zero: the invisible month
The statutory clock ignores everything before validation, but your project doesn’t — survey, design, drawings and supporting documents typically take several weeks.
The validation queue
Busy councils run backlogs — a submitted file can sit days or a couple of weeks before anyone opens it, and a bounce for a defective plan resets that wait.
Inside the determination period
Amendments trigger fresh neighbour notification, consultees reply on their own schedule, and a scheme called to committee waits for the next monthly cycle.
The extension-of-time letter
A written agreement to a new decision date, proposed as a matter of routine on any application that needs negotiation — build the possibility into your programme.
Working to a date that can’t move?
We programme projects backwards from the deadline that matters — building in the queues, cycles and discharge weeks up front, then protecting the calendar with same-day responses and a bounce-proof file.
The Planning Guarantee
There is a legal long-stop: a fee-refund backstop of 16 weeks for non-major applications and 26 weeks for major applications. If the relevant period passes without a decision, no longer period has been agreed in writing and the applicant has not appealed against non-determination, the application fee must be refunded.
Treat it as the system’s smoke alarm, not its timetable.
Application stuck and the weeks mounting?
We diagnose stalled applications, chase the right people, negotiate extensions strategically — and help claim any refund due where the backstop has passed.
The Time Nobody Budgets
The decision notice stops the statutory clock and starts several quieter ones. Discharging conditions — each is a mini-application with its own response period, roughly two months if details need agreeing. The permission’s own shelf life — the window to start is generous, but the discharge step must fit inside it. The build itself — whose separate approvals and inspections run on yet another track entirely.
For a Home Project
Design & file preparation
Statutory assessment
Pre-start conditions
Sketch to lawful start
Where the Compression Happens
- 01 Submit a file the validation team can’t bounce — the cheapest fortnight you’ll ever save.
- 02 Spend on pre-application advice for anything contentious, moving negotiation before the clock starts.
- 03 Answer every officer email the day it arrives.
- 04 Mind the calendar — applications submitted into December or peak summer inherit everyone’s holidays.
- 05 Offer the small concession early — a fortnight’s redesign in week three beats a re-consultation in week nine.
- 06 Never build a contract, mortgage offer or start date on the statutory date alone.
Approval in hand but conditions eating the calendar?
We prepare and chase the discharge applications as one batch wherever possible, and confirm in writing the day your build can lawfully begin.
Planning Timescale FAQs
Select a question to reveal the answer.
Is the 8-week decision period guaranteed?
No — it’s a performance target, not an enforceable deadline. Miss it and the application simply carries on; the fee-refund consequence arises only at the planning-guarantee backstop.
What counts as a major application, and how long does that take?
Broadly: ten or more dwellings, sites over half a hectare for housing, or substantial commercial floorspace. Majors carry a 13-week statutory period — 16 with an environmental impact assessment.
Does the clock stop if I amend my application?
Legally the clock keeps running, which is exactly why amendments so often lead to an extension-of-time request — a revision usually means renotifying neighbours.
What is the planning guarantee?
A fee-refund backstop of 16 weeks for non-major applications and 26 weeks for major applications. If yours passes the relevant point without a longer period agreed and no non-determination appeal, you’re entitled to a refund.
Do objections make a decision take longer?
Often, moderately. What multiplies time more reliably is a referral to planning committee, because committee business runs in monthly cycles.
How long does it take to discharge conditions after approval?
Realistically allow up to two months where details need genuine agreement, and factor it before any start date, since pre-commencement conditions block the first spade.
Can I start work while the application is still undecided?
No. Starting on site before the decision notice exists means building without permission, and tends to poison the negotiation that would have produced the approval.
What’s the fastest a householder application realistically completes?
With immaculate preparation, a cooperative site and no objections: validation inside a week and a delegated decision close to the eight-week mark — call it nine to ten weeks from submission.
Why do councils ask for extensions of time so often?
Because the alternative, when a scheme needs more work than the date allows, is refusing it to stay punctual. Extensions let officers finish negotiating an approvable version.
Do Welsh applications run to the same timescales?
The structure is similar — an eight-week baseline for most applications, longer for majors — but Wales administers its own system with its own performance rules.
Two Clocks, One Story
Planning time runs on two clocks. The statutory one is short and precise — but it only measures the council, and is backed by fee-refund points of 16 and 26 weeks. The real one belongs to your project: the preparation month the law doesn’t count, the validation queue, re-consultations and committee cycles, and the condition-discharge weeks after the yes.
Programme three to six months from sketch to lawful start, compress it with a bounce-proof file and same-day replies, and the two clocks will finally tell the same story.