Finding out your planning application has been marked 'invalid' is frustrating, but it's usually fixable — and it's different from a refusal. It means the council can't yet register and consider it. Here are the common reasons, especially the drawing-related ones, and how to put them right.
In short
'Invalid' is not the same as 'refused' — it means the application isn't yet complete enough to be registered and considered. Common causes are an incorrect location plan, missing existing or proposed drawings, an unclear description, or a missing ownership certificate. Clear, consistent drawings reduce avoidable delay, but no one can promise to rescue every application.
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Reviewed by Sean Corser, SC Design & Construction. Sean Corser helps Wirral homeowners with architectural design and drawing packs for extensions, loft conversions, planning and building regulations.
Last reviewed June 2026
Validation is the completeness check that happens before the formal decision period begins. If important information is missing, Wirral can't register the application as valid — so it simply isn't considered yet.
That's good news in one sense: invalid is a paperwork problem, not a judgement on your design. It's usually correctable.
The decision clock (the target for a decision) starts at validation, not when you press submit. An application stuck at validation isn't progressing at all.
There can be a cost too: Wirral may retain a portion of the fee (commonly cited as around 10%) if an invalid application isn't corrected in time and has to be returned — so it pays to get it right.
On the drawings side, the usual culprits are an incorrect or wrongly-scaled location plan, missing existing or proposed drawings, inconsistent measurements between drawings, and a description that doesn't match what's drawn.
On the paperwork side, a missing or unsigned ownership certificate or missing items from the local validation list are common. Each is avoidable with a careful, complete submission.
If the council asks for revised or additional drawings, respond promptly and precisely — partial fixes can mean another round of delay. Make sure the resubmitted drawings are internally consistent and match the description.
We can help prepare corrected drawings clearly, which reduces avoidable delay — though we can't promise any particular outcome, and some applications raise genuine planning issues that drawings alone won't resolve.
A few details are enough for an honest first view — with no obligation:
Need planning drawings? We can prepare them — clear, coordinated and ready for builders and building control.
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Send Sean a few photos and a short description of what you'd like to do. You'll get an honest first view with no obligation.