The Hidden Cost of Extending in 2026/2027: What’s Happening to Planning Application Fees

The direct answer: the householder planning application fee in England currently stands at £548, in force since 1 April 2026. A further rise, to £575, has been proposed to take effect from 8 December 2026 — but as of today, that increase is not yet law. It remains a draft measure, laid before Parliament and still awaiting formal approval, and the current £548 fee continues to apply unless and until that approval is given. Anyone budgeting for a project that will be submitted this winter should treat £575 as a real possibility, not yet a certainty.

Most conversations about the cost of extending a home focus, understandably, on bricks, glazing and labour — the figures per square metre that determine whether a scheme is deliverable at all. That is a separate subject, and one we have written about elsewhere. This is about a quieter, easily overlooked cost: the price of admission to the planning system itself, and what it is about to become.

Where Did £548 Come From?

The £548 figure is not new, and it did not appear out of nowhere. It dates from 1 April 2026, when the government applied its now-routine annual indexation to planning fees, lifting the householder rate from £528 in line with inflation. This is the fee payable for the enlargement, improvement or alteration of an existing single dwellinghouse — the standard route for most extension and remodelling projects, from a modest garden room to a full wraparound rebuild.

That kind of uplift has become part of the planning calendar's quiet rhythm: a modest rise most springs, tracking the Consumer Prices Index, intended to hold the fee's real value roughly steady. What is being proposed for December 2026 is a different animal — not routine indexation, but a more fundamental re-pricing of the fee system itself.

What's Actually Being Proposed for 8 December 2026?

In July 2026, the Ministry of Housing, Communities and Local Government published its response to a consultation on planning application fees, alongside draft regulations — the Town and Country Planning (Fees for Applications, Deemed Applications, Requests and Site Visits) (England) (Amendment and Transitional Provision) Regulations 2026. The stated aim is to move national default fees toward roughly 90 per cent of what it actually costs local planning authorities to process an application, in response to a funding shortfall across England's planning departments that government itself has put at over £300 million.

For the householder fee, that principle translates into a proposed rise from £548 to £575 — worth roughly £27 on top of April's increase. But the more telling change is structural, not arithmetical. Rather than applying one flat percentage across every category, the draft regulations re-price fee types individually toward that 90 per cent target, and several are moving far more sharply than the headline householder figure suggests. Discharge of condition applications are proposed to rise from £86 to £125. Section 73 applications, to vary or remove a planning condition, would rise from £86 to £112. Prior approval applications — currently free for a number of permitted development categories — would move to a flat £310 fee. Local planning authorities are also being given a new power to set their own fees up to 30 per cent above the national default, subject to evidence, with Secretary of State sign-off required to go further still. In time, this could mean two households extending near-identical houses in two neighbouring districts pay noticeably different fees for the same category of application.

Is the Fee Rise Confirmed, or Still Just a Proposal?

This is the question that matters most for anyone timing a project around it, and the honest answer, checked as of today, is that it remains a proposal. The draft regulations were laid before both Houses of Parliament on 16 July 2026 under the affirmative procedure — which means neither the Commons nor the Lords approves it by default. Both must actively vote to approve the instrument before it can become law. Until that happens, current fees remain in force, and 8 December 2026 is the government's intended commencement date, not a guaranteed one. Every source available at the time of writing, including the government's own published response, frames the change as "subject to Parliamentary approval," and nothing found in the weeks since suggests that position has moved. It is a live process rather than a settled one, and worth checking again nearer the date before relying on either figure for a submission close to it.

Why the Fee Is Only Part of the Real Cost

It is tempting to treat a £27 rise as a rounding error against a six-figure construction budget, and in isolation, it is. But the application fee has never really been the cost of getting a project through planning — only the visible part of it. The larger cost sits in what happens when an application is not well prepared: delay while officers request further information, a refusal that sends a scheme back to the drawing board, or a resubmission made under time pressure with the original programme already slipping.

That last point matters more than it once did. A long-standing provision known as the "free go," which allowed a refused or withdrawn application to be resubmitted without paying the fee again, was abolished in December 2023, and government has given no indication of reinstating it. A revised application today, however minor the changes, means paying the fee in full a second time. As fees rise and local planning departments come under growing pressure to justify the cost of the service they provide, the practical case for getting a submission right the first time only strengthens. The fee itself is a fixed, known cost. The delay, redesign time and lost season that tend to follow a weak submission are not — and they are almost always the larger figure by far.

What This Means for Your Budget and Timing

For anyone planning to extend, remodel or build across Derbyshire and the Peak District over the coming year, a few practical points follow from all this. Build a modest allowance into the application-fee line of a budget, rather than assuming £548 will hold indefinitely. Bear in mind that the fee itself may soon vary by local planning authority as well as by application type, so a figure quoted for one district should not automatically be assumed to hold in the next. And resist letting an uncertain deadline dictate design decisions — rushing a submission to beat a possible £27 rise is rarely a sound trade against submitting a scheme that has been properly thought through and stands a genuine chance of a clean decision.

How Do You Protect Against Costly Delay or Refusal?

None of this is really about the fee at all. It is about the value of preparation — the unglamorous, unbilled hours spent understanding a site, its planning history and the character of the area around it, long before a single drawing is submitted. A scheme that responds thoughtfully to its context, that has been tested against local policy before submission rather than after refusal, and that anticipates an officer's questions rather than inviting them, is simply less likely to need a second attempt. That has always been true, and it has nothing to do with fee rises specifically. But as the cost of a false start increases and planning departments come under more pressure to scrutinise what lands on their desks, the margin for a poorly prepared application to slip through narrows further still. Getting it right the first time has always mattered. It is becoming less forgiving not to.

Frequently Asked Questions

What is the current householder planning application fee in England?

£548, in force since 1 April 2026. This covers the enlargement, improvement or alteration of an existing single dwellinghouse — the category most home extensions and remodelling projects fall under.

Is the £575 fee definitely happening from 8 December 2026?

No. As of today, it remains a draft measure awaiting approval by both Houses of Parliament under the affirmative procedure. The current £548 fee stays in force unless and until that approval is granted, and the December date could in principle still shift.

Will every council charge the same fee?

Not necessarily, once the new regulations take effect. Local planning authorities are being given the power to set fees up to 30 per cent above the national default, so figures may begin to vary meaningfully by district.

If my application is refused, can I resubmit for free?

No. The "free go" resubmission exemption was abolished in December 2023 and has not been reinstated. A resubmitted or revised application requires paying the fee again in full, on top of the time already lost.

Does a higher fee mean a faster decision?

Not automatically. The stated aim is better-resourced planning departments, but statutory determination periods and local backlogs still vary by authority, and a higher fee is no guarantee of a quicker one.

In Closing

Fees are, in the end, only ever a proxy for something else: the time, judgement and care that a planning system asks of everyone who passes through it. They will keep rising, in one form or another, because processing a considered decision has never truly cost nothing. What stays constant, whatever a fee schedule says this December or next April, is that a well-prepared application remains the cheapest route through the system — not because it costs less to submit, but because it asks less of everyone, twice.