The tilted balance and when it actually applies

The tilted balance in planning is the version of the presumption in favour of sustainable development that applies to decision-taking when the development plan is absent, silent or out of date. Instead of the usual question, whether the proposal accords with the development plan as a whole, the decision maker asks whether the adverse impacts of granting permission would significantly and demonstrably outweigh the benefits, to use the Framework's own words. The burden shifts. That is the whole point of the word tilted.

It is not a presumption that permission will be granted. Schemes fail the tilted balance regularly, and some fail it badly.

What the presumption does

Section 38(6) of the Planning and Compulsory Purchase Act 2004 requires determination in accordance with the development plan unless material considerations indicate otherwise. The National Planning Policy Framework, current edition published 17 August 2026, is a material consideration and it sets out the presumption. Cite it by the policy code used in that edition, and check the code on gov.uk before you do, because the August 2026 Framework replaced the paragraph numbering that practitioners had learned from the December 2024 and December 2023 editions.

Two limbs matter. The first applies where the development plan contains no relevant policies, or the policies most important for determining the application are out of date. In that situation permission should be granted unless a protective policy in the Framework provides a clear reason for refusal, or the adverse impacts would outweigh the benefits on that formulation when assessed against the Framework as a whole.

The second limb is the clear reason for refusal route, and it is not a balancing exercise at all. Where it applies, the tilted balance never starts.

The triggers that engage it

There are fewer triggers than optimistic statements of case suggest.

An absent plan, meaning no relevant policies at all for the proposal, is rare and usually only arises on unusual development types.

A plan whose most important policies are out of date is the common route. That can happen because the policies are old and were adopted under a superseded framework, because they have been overtaken by events, or because the authority cannot demonstrate the housing land supply the Framework requires. Deemed out of date provisions also operate where delivery has fallen below the threshold the Housing Delivery Test sets. Check the current Framework and the most recent published test results for the figures, since both have changed more than once.

Age alone does not make a policy out of date. A settlement boundary policy adopted in 2009 can still be up to date if it remains consistent with the Framework and is being applied as intended. Conversely a recently adopted policy can be out of date if it was based on a housing requirement the authority is now failing to deliver.

Policies most important for determining the application

This phrase does real work and is where most arguments are won.

It is a basket, not a single policy. The decision maker identifies the policies that carry the most weight for this proposal, then asks whether that basket, taken as a whole, is out of date. One outdated policy in a basket of six does not tip it, and the Supreme Court has made clear that the exercise is one of planning judgement rather than a mechanical test of whether a policy relates to housing supply.

Identify the basket explicitly in your statement. List the policies, say which are up to date and which are not, and explain why the basket as a whole falls one side of the line. An inspector who has to construct that list themselves will construct it less helpfully than you would.

The protective policies that switch it off

Where a Framework policy protecting an area or asset of particular importance provides a clear reason for refusing, the tilted balance does not apply. The policies referred to have consistently covered habitats sites and sites designated as Sites of Special Scientific Interest, land designated as Green Belt, Local Green Space, National Landscapes and National Parks, irreplaceable habitats, designated heritage assets and areas at risk of flooding or coastal change.

Three points about how this works in practice.

The policy has to provide a clear reason for refusal, not merely be engaged. A site 900 m from a habitats site with an agreed nutrient mitigation package does not generate a clear reason for refusal, so the tilted balance survives.

Heritage is the most litigated of these. Where a proposal causes less than substantial harm to a designated heritage asset, the internal heritage balance has to be carried out first, and only if that produces a reason for refusal is the tilted balance disengaged. A Heritage Statement that sets out the significance, the harm and the public benefits in that order gives the decision maker the structure the law requires.

Flood risk works similarly. Failing the sequential test gives a clear reason for refusal. Passing it, with a satisfactory Flood Risk Assessment, does not.

How inspectors apply the weighing exercise

Once the balance is engaged, the exercise is not a tally of good and bad. Both adverbs in the Framework's formulation carry weight, and demonstrably means shown by evidence rather than asserted.

Benefits that inspectors have consistently given real weight to on housing appeals include the delivery of market and affordable homes where supply is short, economic activity during construction, and biodiversity or public access gains secured by obligation. Harms that carry weight include landscape and visual effects, loss of best and most versatile agricultural land, highway safety, and conflict with a recently adopted spatial strategy.

Weight is for the decision maker. What you can control is whether each benefit is quantified and secured. An affordable housing offer in a signed unilateral undertaking weighs more than the same offer in a covering letter, and the Affordable Housing Statement should say exactly what is being secured and how.

Arguing it in a statement

Set it out in a sequence the inspector can follow without rearranging it.

1. State the development plan position and identify the policies most important for determining the application.
2. Say whether any are out of date, and why, with evidence for any housing land supply or delivery point.
3. Deal with the protective policies, and explain why none provides a clear reason for refusal.
4. List the benefits, with the mechanism securing each.
5. List the harms, including the ones against you, and say what weight each deserves.
6. Conclude on whether the adverse impacts would outweigh the benefits on the tilted formulation.

Do not skip step five. A statement of case that lists only benefits reads as advocacy rather than assessment, and inspectors notice. Dealing with the harms you accept, and explaining why they are outweighed, is what makes the rest credible. A well-structured Planning Statement that follows this order is doing the inspector's drafting for them, which is usually the point.

One honest caveat. Housing land supply positions move, sometimes between the appeal being lodged and the hearing, and an authority that adopts a plan in the meantime can take the tilted balance away from you mid-case. Build the alternative argument, that the scheme accords with the plan in any event, rather than relying on the tilt alone.

PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval. This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it. Enter your postcode on PlanScope to see which supporting documents a scheme is likely to need.