Outline application fees and the site area bands

An outline planning application fee is calculated on the area of the site, not on the number of houses you hope to build on it. That is the single most useful thing to know about it, and it is where most self-builders and small developers get the sum wrong. The fee regulations set a rate for each 0.1 hectare of site area up to a threshold, a different arrangement above that threshold, and a maximum fee that caps large sites. Full applications for housing, by contrast, are charged per dwelling. So the same red line can produce very different fees depending on which route you take.

Fees are indexed annually each April, so every figure below has to be read off the current schedule rather than from an old planning statement.

How outline fees are calculated by site area

The mechanism is straightforward once you separate the two elements.

For a site up to the threshold in the regulations, currently expressed as 2.5 hectares, the fee is a set amount for each 0.1 hectare of site area, counting any part of a 0.1 hectare as a whole unit. A site of 0.62 hectares is therefore charged as seven units of 0.1 hectares, not as six and a fraction.

For a site above that threshold, the regulations set a base amount covering the first 2.5 hectares plus a smaller additional amount for each 0.1 hectare above it, subject to an overall maximum.

Two consequences follow. Small sites pay more per hectare than large ones, and the rounding up of part units means a boundary drawn a few metres wider than necessary can cost you a whole unit of fee.

The hectare bands and the ceiling

Read the fee schedule as three zones.

The ceiling matters for promoters of large sites, because beyond a certain area the outline fee stops rising. Below it, the arithmetic rewards a tight red line.

Note that site area for fee purposes is the area of the application site, which is the land inside the red line. That includes land needed for access and for drainage, so the fee-efficient boundary is not always available to you. Do not shrink a red line to save a fee and then find the access is outside the application site.

Reserved matters fees and how they are apportioned

Once outline permission is granted, approval of reserved matters is a separate application with its own fee, and the basis changes. The regulations calculate the reserved matters fee by reference to what a full application for that development would have cost, with rules to prevent an applicant paying more overall than the full application fee, and a flat fee applying to later applications once that equivalent has been paid.

Where reserved matters are submitted in phases, which is normal on anything above a handful of plots, the apportionment across submissions is the part that goes wrong. The practical approach:

1. Calculate what a full application for the whole development would have cost under the current schedule.
2. Work out what has already been paid on earlier reserved matters submissions.
3. Apply the regulations' rule for the current submission, which may be the calculated amount or the flat fee.
4. Ask the authority to confirm the figure in writing before you submit.
5. Keep the confirmation, because fee disputes surface months later when a phase is being discharged.

Point four is not a sign of weakness. Validation teams calculate these every week and would rather answer an email than return an application.

Where the red line changes the fee

The red line does three things at once: it defines what permission is sought for, it drives the ownership certificates, and on an outline application it sets the fee. Those pull in different directions.

Areas that must be inside the red line even though they add fee: a new access and any visibility splay requiring works, land for a drainage outfall or attenuation, a temporary construction access if it needs permission, and any land needed to deliver required open space or biodiversity measures on site.

Areas that can often sit outside: land you own but are not developing, which goes in blue, existing highway that requires no works, and offsite biodiversity units secured elsewhere.

Crossing 0.5 hectares or one hectare matters for reasons beyond fees, because national thresholds for major development and for flood risk assessment sit at those figures. A boundary drawn to save fee that pushes you over a report threshold has cost you money, not saved it.

Calculation errors that invalidate an application

Applications are returned for fee errors more often than for any technical failing, and the causes repeat:

• site area measured to the wrong boundary, or taken from a parcel record rather than the red line
• part units of 0.1 hectares rounded down instead of up
• an outline fee calculated per dwelling, on the full application basis
• the previous year's schedule used after the April indexation date
• a reserved matters fee calculated without accounting for earlier submissions
• the wrong category selected on the portal, which produces a fee that looks plausible
• a concession claimed without meeting its conditions, such as the free resubmission

The free resubmission deserves a note. Where an application is refused or withdrawn, the regulations allow one further application for substantially the same development on the same site without a fee, within a period set in the regulations and subject to conditions. Claiming it wrongly gets the application returned as invalid, so check the conditions rather than assuming.

Checking the figure against the current schedule

Do this every time, because indexation moves the numbers each April.

Use the fee calculator on the Planning Portal for the arithmetic, then verify the inputs yourself: the site area in hectares to two decimal places, taken from the measured survey or from the red line area on the location plan, and the application type. Print the calculation and keep it with the submission. Where the site area sits within a few square metres of a band boundary, have the area confirmed by the surveyor rather than scaled off a drawing.

For budgeting, the fee is a small part of the cost of getting to a decision. The evidence base is the expensive part, and knowing which documents the authority will expect is what makes a budget realistic. Our notes on the cost of failing validation and on budgeting energy statement calculations cover two of the recurring lines, and you can see the full document set at the report index.

PlanScope pricing is one free report, £50 per report, or £150 per month for the Professional tier, which is separate from the council's application fee and does not replace it.

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