The short answer
Planning permission involves two separate clocks. First, the architect prepares the planning drawings and application — commonly 2 to 6 weeks from instruction, depending on the survey, design rounds and your decisions. Then the local authority has a statutory determination period: for a typical householder application this is around 8 weeks from validation, and larger or major applications are usually 13 weeks. So from first meeting to a decision is often 3 to 4 months, sometimes longer if the council asks for more information, the application goes to committee, or amendments are needed. An architect cannot speed up the council's statutory period, but they can reduce delays by submitting a complete, valid application first time and handling the planners' queries efficiently.
The biggest misunderstanding about planning is that an architect controls the timeline. They control the drawings; the council controls the decision — and the two together set the real wait.
Two clocks, roughly
- Prepare drawings + apply~2–6 weeks
- Validation by councilDays to ~2 weeks
- Householder decision~8 weeks (statutory)
- Major application decision~13 weeks (statutory)
- Typical total~3–4 months
The two stages: preparation and determination
Getting planning permission breaks into two distinct phases:
- Preparation (architect's clock): the property is surveyed, a design is agreed, and the architect draws up the existing and proposed plans, elevations, sections, and the site and location plans, then assembles the application forms and any supporting statements. For a straightforward home project this is commonly a few weeks, driven mostly by how quickly you sign off the design.
- Determination (council's clock): once the council validates the application (confirms it has everything it needs), the statutory decision period begins. For a householder application this target is around eight weeks; for larger schemes classed as major, around thirteen.
The validation step matters. The eight-week clock only starts once the application is accepted as valid, so a submission missing a required document or fee waits in limbo until it is corrected.
Typical timescales
The figures below are indicative for an average household project in England. Wales, Scotland and Northern Ireland have their own systems with broadly comparable timescales.
| Step | Who controls it | Typical time |
|---|---|---|
| Survey + design sign-off | You + architect | 1–3 weeks |
| Prepare + submit application | Architect | 1–3 weeks |
| Validation | Council | Days–2 weeks |
| Householder decision | Council | ~8 weeks |
| Major application decision | Council | ~13 weeks |
| Discharge of conditions | Council | Weeks (if applicable) |
Indicative statutory targets and typical practice; actual times vary by authority and workload. Sources: Planning Portal; GOV.UK.
What causes delays — and what an architect can and cannot do
Several things commonly stretch the timeline beyond the statutory target:
- Invalid submissions: a missing drawing, document or fee delays validation, which delays the start of the decision clock. A well-prepared architect avoids this.
- Officer queries and amendments: the case officer may ask for changes during the decision period. Responding quickly keeps things moving; resisting can lead to refusal and an appeal.
- Consultations: neighbours, the highways authority, conservation officers or others may be consulted, and their responses take time.
- Committee decisions: some applications are decided by a planning committee rather than an officer, which can add weeks waiting for the next meeting.
- Extensions of time: councils frequently ask applicants to agree a short extension beyond the statutory period rather than refuse, especially when busy.
An architect cannot shorten the council's statutory period, but they materially affect the outcome by submitting a complete, well-presented and policy-aware application, and by negotiating sensibly with the case officer. A clean first-time submission that needs no amendments is the fastest route there is.
Frequently asked questions
Can an architect speed up planning permission?
An architect cannot shorten the council's statutory decision period, which is around eight weeks for a householder application. They can speed things up indirectly by submitting a complete, valid, policy-aware application first time and handling officer queries quickly, avoiding delays and amendments.
Does the eight-week clock start when I submit?
No. It starts when the council validates the application — confirms it includes all required documents, drawings and the fee. A submission missing something waits until it is corrected, which is why a well-prepared application matters.
What if my project does not need planning permission?
Many home projects fall under permitted development and need no full application, or only a Lawful Development Certificate, which is usually decided more quickly. An architect should confirm at the outset whether you need full permission, a certificate or nothing, as this changes the timeline significantly.
Sources & further reading
- Planning Portal — how long does a planning application take
- GOV.UK — planning permission
- GOV.UK — permitted development rights
Figures on this page are typical UK ranges drawn from published sources and depend on your specific project. They are guidance, not a quotation.