When Can You Appeal a Planning Condition?

Planning permission can sometimes feel like a hard-won victory. After months of design work, consultations, and negotiations with the local authority, you finally get that decision notice… only to find it comes with a list of conditions that weren’t quite what you expected.

Maybe one of the conditions limits opening hours, restricts the use of part of your property, or requires expensive works before development can start. You might even feel that a condition is unnecessary, unreasonable, or simply doesn’t make sense in your circumstances.

If that sounds familiar, the good news is that you don’t always have to accept a planning condition as it stands. In many cases, there’s a formal route to appeal — and understanding those options can make all the difference between a stalled project and a successful one.

In this article, we’ll unpack the different ways you can appeal a planning condition, when each applies, and what to expect from the process.

Why planning conditions are imposed

Before diving into appeals, it’s worth taking a quick look at why conditions exist in the first place.

Local planning authorities (LPAs) use conditions to make development acceptable in planning terms — in other words, to deal with issues that might otherwise justify refusal. They might be used to:

• Control the timing or phasing of development.

• Secure design, landscaping, or materials details.

• Protect neighbours’ amenity (for example, through opening hours or noise restrictions).

• Require mitigation for highways, drainage, ecology, or heritage matters.

• Restrict uses within a planning unit.

National policy, through the National Planning Policy Framework (NPPF), says that conditions should only be imposed when they meet the “six tests” — they must be:

1. Necessary

2. Relevant to planning

3. Relevant to the development

4. Enforceable

5. Precise

6. Reasonable

Unfortunately, not all conditions pass those tests. Sometimes conditions are poorly worded, disproportionate, or outdated. Others may conflict with national guidance or create practical problems that weren’t anticipated at application stage.

That’s where the right of appeal comes in.

Appealing a planning condition: the main routes

There isn’t just one type of “appeal against a condition” — and this is where things often get confusing. The correct route depends on when and how you’re challenging the condition.

There are five main types of appeal involving planning conditions under the Town and Country Planning Act 1990. The most common three are:

1. Section 79 (s79) — appealing a condition attached to a recent grant of permission.

2. Section 73 (s73) — seeking permission to develop without complying with a condition.

3. Section 73A (s73A) — retrospective applications where a condition has already been breached or development carried out.

Let’s take each in turn.

1. Section 79 appeals – challenging a condition on a new permission

If you’ve just received a planning permission and disagree with one or more conditions, you can appeal directly against those conditions under Section 78(1)(a) and Section 79(1) of the 1990 Act.

This is sometimes called a “Type 1 appeal”, or simply a conditions appeal.

Here’s how it works:

• You have six months from the date of the decision notice (or 12 weeks for householder appeals) to lodge an appeal with the Planning Inspectorate.

• The appeal can only be made by the original applicant.

• The Inspector will look at the whole permission and can reconsider it afresh — they’re not limited to the disputed condition.

• In theory, the Inspector could even refuse the permission entirely if they find it fundamentally flawed (though this is rare).

Because the Inspector has the same powers as the local authority, they can:

• Delete a condition entirely.

• Replace it with a modified version.

• Add new conditions if necessary.

That makes s79 appeals quite flexible. They’re particularly useful when you believe a condition fails the six tests or isn’t necessary to make the development acceptable.

For example:

• A restaurant permission includes a condition restricting opening hours to 8am–6pm, but there’s no nearby residential use that would justify it.

• A pre-commencement condition requires you to submit details of external materials before works start, but that condition wasn’t agreed in writing as required by law.

In these cases, a direct appeal against the condition might be justified.

2. Section 73 appeals – varying or removing a condition on an existing permission

If you already have planning permission — perhaps granted a few months or years ago — and you want to change or remove one of its conditions, you’ll need to make a Section 73 application.

This route allows you to apply for “permission to develop land without complying with a condition previously attached” to a planning permission.

Crucially, this creates a new planning permission. The original permission stays in place, but you’ll have two separate consents to choose from — one with the condition, and one without (or with it modified).

If the LPA refuses your s73 application, or doesn’t determine it in time, you can appeal to the Planning Inspectorate.

When s73 applies

• You’re seeking to change a condition before or during construction.

• The original permission is still valid (i.e. it hasn’t expired).

• The proposed change wouldn’t conflict with the original description of development.

Section 73 is often used to:

• Extend opening hours.

• Amend approved drawings.

• Remove or relax pre-occupation conditions.

• Adjust operational restrictions (e.g. deliveries, parking, lighting).

The limits of Section 73 – the Finney principle

A key piece of case law — Finney v Welsh Ministers (2019) — clarified that you cannot use Section 73 to change the description of development itself.

That means if your original permission was for “two-storey side extension”, you can’t use s73 to turn it into a “three-storey extension”. Likewise, if permission was for “five flats”, you can’t change it to “six flats” via a condition variation.

You can only vary the conditions, not the operative part of the permission.

If your proposed change would conflict with the description, the application (and any appeal) would be invalid — you’d need a new full planning application instead.

This is a common pitfall, and one worth checking carefully before going down the s73 route.

3. Section 73A appeals – dealing with conditions retrospectively

Sometimes, development starts before all conditions are discharged — or a condition is breached after works begin. In those cases, you may be able to apply (and appeal, if necessary) retrospectively under Section 73A.

In simple terms, Section 73A allows a planning authority to grant permission for development that has already been carried out. It can be used to regularise situations where:

• A condition has been breached (for example, opening hours exceeded).

• Works were completed differently from the approved plans.

• Development commenced without formally discharging pre-commencement conditions.

This type of appeal can be delicate. You’re effectively asking the Inspector to regularise a breach, so it’s vital to show that the outcome causes no harm and would have been acceptable if applied for properly in the first place.

Case law (Lawson Builders Ltd v SSCLG, 2015) confirmed that Inspectors have some flexibility between s73 and s73A — but only where no prejudice would result. For instance, if development is substantially the same as approved, but a condition wasn’t complied with, an s73A appeal may still be reasonable.

If the works differ significantly or involve a different use, though, a new full application may again be the only option.

Appealing conditions on prior approvals

A slightly different issue arises with prior approval developments under the General Permitted Development Order (GPDO) — for example, converting an office to residential under Class MA.

LPAs can impose conditions when granting prior approval, and these too can be appealed. The appeal mechanism is similar to that for a full planning permission, but with an important twist: an allowed appeal will result in a new grant of planning permission, not a “prior approval” as such.

That can have implications for permitted development rights going forward, so careful drafting of conditions is essential.

How long do you have to appeal a planning condition?

The time limits vary depending on the type of appeal:

• Against a condition on a new permission: Typical time limit is 6 months (12 weeks for householders). The original applicant can appeal under s79 (via s78(1)(a)).

• Against refusal to vary/remove condition: Typical time limit is 6 months. The applicant (not necessarily the original) can appeal under s73.

• Retrospective permission for breach: Typical time limit is 6 months from refusal. The applicant can appeal under s73A.

It’s always best to act early. Even a strong case can fail if it’s out of time, and enforcement action might follow if a condition is being breached.

What Inspectors look for in a conditions appeal

Whether you’re appealing under s79, s73, or s73A, the Inspector’s job is essentially the same: to consider whether the disputed condition meets the six tests and whether removing or varying it would cause harm.

When assessing an appeal, Inspectors will ask:

• Is the condition necessary to make the development acceptable?

• Does it still serve a useful planning purpose, or has it become redundant?

• Is it reasonable and proportionate in scope and timing?

• Is it enforceable and precise?

They’ll also consider:

• The effect on neighbours’ amenity, highways, ecology, heritage, or design.

• Relevant local plan policies and material considerations.

• Whether alternative controls (e.g. planning obligations or environmental permits) could achieve the same purpose.

A well-prepared appeal will address these points directly, referencing both local policies and national guidance.

Common examples of successful appeals

To make things concrete, here are a few situations where appeals against conditions have succeeded:

• Unnecessary duplication: A condition requires a Construction Management Plan when one is already secured by another permission.

• Overly restrictive hours: A small café limited to 9am–5pm when evidence shows later operation would cause no harm.

• Unreasonable pre-commencement trigger: A condition requiring approval of materials “before development begins” rather than before relevant works commence.

• Out-of-date mitigation: A landscape condition referencing a planting scheme that no longer reflects site reality.

Each of these cases turned on necessity, proportionality, or precision — and each shows why it’s worth reviewing your decision notice carefully.

When to consider appealing

Appealing isn’t always the right first step. Sometimes a condition can be clarified, varied, or discharged through dialogue with the local authority.

But you should seriously consider an appeal if:

• The condition makes your development unimplementable or commercially unviable.

• It fails one or more of the six tests.

• It duplicates other controls (such as Building Regulations or environmental permits).

• It was imposed without justification or contrary to national guidance.

• The LPA refuses to amend or remove it following a Section 73 application.

A planning consultant can help you assess whether the condition is truly unreasonable in planning terms and whether an appeal is likely to succeed.

Practical tips for a strong appeal

1. Get clear on what you’re appealing.
   Identify the exact wording of the condition, the permission it relates to, and the legal basis of your appeal.

2. Explain why the condition fails the tests.
   Is it unnecessary, unreasonable, or unrelated to planning? Spell that out clearly, using evidence where possible.

3. Reference relevant case law and guidance.
   Decisions like Finney and Lambeth can add weight to your argument.

4. Be proportionate.
   Focus on the condition itself, not re-arguing the entire planning case.

5. Engage early.
   If you’re unsure about the right route (s79, s73, or s73A), get professional advice before submitting.

Final Thoughts

Appealing a planning condition can seem daunting, but it’s often a vital tool for unlocking development potential or removing unnecessary obstacles. The key is understanding which appeal route applies and why the condition doesn’t meet planning tests.

In my experience as a planning consultant, many applicants assume they have no choice but to comply — even when a condition is clearly flawed. But planning law gives you rights, and the Planning Inspectorate regularly upholds well-founded appeals.

If you’ve received a permission that doesn’t quite work because of a condition, don’t ignore it or rush ahead in breach. Take advice early, understand your options, and make your case clearly.

Because sometimes, the difference between a stalled project and a successful one isn’t the principle of development — it’s the fine print of the conditions

About Me

Andrew Ransome is the planning director at ADP and is a chartered member of the RTPI, with over 22 years of town planning experience.

Andrew has extensive experience offering strategic planning solutions to challenging projects in both rural and urban settings. Follow him on Linkedin.

Get in touch