Householder appeals are among the easiest planning appeals to win, and among the most abandoned. Most people get the refusal, feel bruised, and quietly give up on the extension. Don’t. We have submitted well over a thousand appeals and read at least as many inspectors’ decisions, and we win more than half the ones we take on. Here is what that experience teaches you about winning a householder appeal – an extension, loft, dormer, porch or outbuilding – under the appeal rules introduced in April 2026. For how the appeal process works from top to bottom, see our complete guide to winning a planning appeal.
1. Be honest about your proposal
Start by admitting whether your scheme deserved the refusal, because some do. If you hired a cheap designer, or pushed on with something everyone told you was too big, no appeal in the world will rescue it. When you are the applicant it is hard to see the wood for the trees, so the honest first step is to work out whether to appeal, trim the scheme back and reapply, or go back to the drawing board. We do that for every case before taking it on, and we tell you straight. That first view is free.
2. Know the two issues householder appeals come down to
Almost every householder refusal comes down to one of two things: the effect on the character and appearance of the area, or the effect on your neighbours – their light, outlook and privacy. Read the decision notice and work out which is in play. Everything in your appeal should bear on that one issue, because it is all the inspector will weigh. There is no mileage in re-arguing the parts the council was perfectly happy with.
3. Make your street your best witness
Councils refuse householder schemes as ‘out of character’ more than for any other reason, and the answer is usually standing right outside your front door. If half your road already has similar dormers, extensions or porches, the character objection falls apart. When I helped Brendan Michaels appeal a refused rear dormer in Northampton, the council said it was too big and would harm the street – but eleven of the fourteen closest houses already had full-sized dormers. The inspector accepted that the character had already changed and allowed it. Remember that under the current rules you cannot add evidence at appeal, so the photographs and the plans showing your neighbours’ extensions have to be in the application from the start. The appeal is where you point the inspector to them.
4. Don’t forget your permitted development fallback
Houses – not flats – come with permitted development rights: many extensions, dormers and outbuildings can be built with no planning permission at all, within set limits. If you could lawfully build something similar to your refused scheme anyway, that fallback is one of the strongest cards a householder appeal can play. The question stops being ‘is this proposal acceptable?’ and becomes ‘is it any worse than what you could build without even asking?’ It can even help the other way round: we won a dormer appeal on a flat in Haringey partly by showing that a house could have built the very same thing as of right.
5. Sweat the details on neighbour impact
Where the refusal is about a neighbour’s light, outlook or privacy, the case is won or lost on physical specifics: which way the two houses face relative to the sun, differences in ground levels, whether the affected window serves a living room or a downstairs loo, the fence along the boundary, the height of what you propose. Case officers reach for a rule of thumb like the 45-degree line and stop there. Inspectors actually visit, and they look at the real relationship between the buildings. If the geometry is on your side, make sure your drawings show it, and spell it out. You can see this in our Trafford rear extension appeal, allowed because the extension’s low height meant no real loss of light.
6. The appeal itself is 250 words
Here is the part that surprises people. Under the current rules there is no appeal statement. Your whole case is a summary of around 250 words on the appeal form, and you cannot add anything later. Every word has to earn its place. How to choose them, and the wider tactics that win appeals of any kind, are in our guide to the 250-word summary and the complete guide to winning a planning appeal.
7. Or just hand it to us
The surest way to win is to have the appeal prepared by someone who does it every week. Our planners are RTPI-chartered, all former council case officers, and we win more than half the appeals we take on. The fee is fixed at £399 – the form, the summary and full management through to the decision. Send us your refusal for free initial advice, and whatever you decide, use your right to appeal. Good luck.