How likely is my planning application to get approved in Test Valley?

Planning permission in Test Valley isn't a simple yes or no. With 33 conservation areas, over 2,000 listed buildings, and proximity to the North Wessex Downs AONB, the variables stacking up against a straightforward answer are significant. Most homeowners assume their project is either obviously fine or obviously not — the reality is far murkier, and WhatCanIBuild exists precisely because the gap between those two assumptions is where most mistakes happen.

Your postcode isn't enough to know

Test Valley covers a wide area — from Andover and Romsey through to smaller villages and rural parishes. Two houses on the same road can be subject to completely different planning constraints. One might sit inside a conservation area. Another might not. One might be a listed building or within its curtilage. Another might have full permitted development rights. Even if you know your postcode, that tells you very little about what your specific property can and can't do without permission.

Article 4 directions complicate things further. These can remove permitted development rights that would otherwise apply — and most homeowners don't realise they're affected until they've already started work or filed an application.

The AONB factor most people overlook

Test Valley borders and includes parts of the North Wessex Downs AONB. Properties on or near Article 1(5) land have restricted permitted development rights — meaning projects that would sail through elsewhere can require full planning permission here. A rear extension that's straightforward in Chandler's Ford might trigger entirely different requirements in a village closer to the AONB boundary.

It's not just about whether you're technically inside the AONB. Proximity matters. The character of the surrounding area matters. How the council has interpreted similar applications on your street matters. None of that is visible from a postcode alone.

What actually predicts approval

The best predictor of whether your application will succeed isn't the general rules — it's what's happened on similar properties nearby. Has a comparable extension been approved or refused on your street? What reasons did the council give? Did the applicant appeal, and what happened?

That's the kind of intelligence that changes how you approach an application — the size, the materials, whether you bother at all. The best way to get that picture is through WhatCanIBuild, which shows you what's been approved and refused near your address, and what that means for your specific project type.

The £548 householder application fee is non-refundable. The eight-week decision window is just the beginning if you end up in conditions, revisions, or appeal. Getting a clearer read on your odds before you commit isn't a luxury — it's basic risk management.

Before you assume anything

Most homeowners either assume their project is fine or assume it definitely needs permission. Both assumptions are expensive when they're wrong. Your property's specific combination of constraints — conservation area status, listed building proximity, AONB adjacency, Article 4 directions, and local precedent — determines your real approval odds. WhatCanIBuild surfaces that combination for your address, including what's actually been approved nearby and why.