Spending £548 on a planning application that gets refused is a painful way to find out your project had a problem. And in Solihull, the reasons for refusal aren't always the obvious ones. The rules that apply to your property depend on factors most homeowners don't even know to check — and WhatCanIBuild was built specifically to help you understand your odds before you commit.
The short version
- Refusal reasons in Solihull often come down to your specific property, not just general rules
- Green Belt land, listed buildings, and conservation area designations all change what's acceptable
- What got approved on a neighbouring street might still be refused at your address
"It looks out of character" — and what that actually means
One of the most common reasons planning applications get refused anywhere is that the proposal is deemed out of character with the surrounding area. In Solihull, this is complicated by the sheer variety of housing stock — from post-war semis in Chelmsley Wood and Kingshurst to detached properties in Knowle and Dorridge. What counts as "in keeping" on one street may be completely different two roads away.
Solihull also has 387 listed buildings on record. If your property is listed — or even close to one — the bar for what's acceptable rises sharply. Most homeowners don't realise how far the influence of a listed building can extend, or that the same extension design might sail through on one street and be refused on the next.
Green Belt: the constraint that surprises people most
Parts of Solihull fall within Green Belt land, and this changes the planning calculation significantly. Extensions, outbuildings, and other works that would be straightforward elsewhere can face much tighter scrutiny in the Green Belt. The rules don't just affect new builds — even modest alterations to existing homes can be caught by Green Belt policy depending on what's already been built on the plot.
The problem is that most homeowners don't know where the Green Belt boundary sits in relation to their specific address. It doesn't follow roads or obvious landmarks. Your neighbour could be inside it while your property isn't — or vice versa.
Check before you assume
Solihull's pre-application advice service doesn't cover householder works, so you can't simply ask the council in advance. The council's House Extension Guidelines offer some direction, but they can't tell you how your property's specific combination of constraints affects your chances.
The detail that kills applications: cumulative impact
Even where a proposed extension doesn't breach any single rule outright, applications can still be refused on the grounds of cumulative impact — the combined effect of everything that's already been done to a property. If previous owners added a side return or converted the garage, your new proposal is assessed against what the property looks like now, not what it looked like originally. This catches homeowners out constantly.
Neighbour objections also carry more weight than people expect. They don't determine the outcome, but they shape how closely an officer scrutinises things like overlooking, loss of light, and impact on amenity. A poorly positioned window can turn a straightforward application into a contested one.
What actually happened to similar applications nearby
The best way to understand your real chances isn't to read the general rules — it's to look at what's actually been approved and refused on properties like yours, in your part of Solihull, for projects like yours. That's exactly what WhatCanIBuild pulls together: local decision data mapped to your address, so you can see whether your project is likely to fly or face a fight.
General guidance tells you the categories of things that matter. It can't tell you how those categories combine at your specific property — whether you're in a conservation area, how close you are to a listed building, whether your plot sits in the Green Belt, and what happened when your neighbours tried something similar.
WhatCanIBuild gives you that picture before you spend £548 finding out the hard way.
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