Class F driveways: hard surfaces and drainage rules

Class F can grant planning permission for driveways, patios, paths and other hard surfaces within the curtilage of a qualifying house in England, where they serve a purpose incidental to enjoying the house. It also covers replacing all or part of an existing surface.

The main condition concerns drainage from certain surfaces at the front. “Install a drain” is not enough: where the condition applies, the surface must be porous or its runoff must be directed to a permeable or porous area inside the curtilage.

When does the 5 m² drainage condition apply?

Both of these tests must be met:

• The surface is on land between a wall forming the principal elevation of the house and a highway
• The area covered by the proposed hard surface, or the area being replaced, is more than 5 m²

Exactly 5 m² does not trigger F.2. However, the proposal still needs to satisfy the scope of Class F and other applicable controls. The condition is not simply a rule for every surface visible from a road, nor a universal rule for every rear patio.

Two ways to meet the condition

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For example, suitable non-porous paving draining to a suitable permeable area within the plot may meet the second option. A channel which simply carries the water into the road or sewer does not establish compliance with that option.

Drainage must work as designed. The appropriate construction, ground conditions, levels and capacity need checking by someone competent to design the drainage. Planning Geek can advise on the planning requirement and coordinate with an appropriate specialist.

Is there a maximum driveway area?

Class F does not specify a general maximum area or import the 50% building-coverage limit from Classes A and E. That does not authorise paving any land you own: the surface must be within the curtilage and for an incidental domestic purpose.

Replacement work is included. An existing impermeable driveway is not a reason to ignore F.2 when replacing more than 5 m² in the specified front location.

Access to the road is a separate check

Planning permission for a driveway surface does not itself authorise a new access, a dropped kerb, works to a pavement or crossing someone else’s land. Check with the highway authority and establish any necessary private rights before creating or using a vehicle access.

See Part 2 Class B: access to a highway for the separate planning provisions. Decking and raised structures need their own assessment, including Class E where relevant. Substantial engineering works are not automatically authorised merely because paving is proposed on top.

Which properties can use Class F?

• It is for a dwellinghouse, not a flat, maisonette or building containing flats
• It is unavailable where permission to use the house as a house arose only through Part 3 Classes G, M, MA, N, P, PA or Q
• A dwellinghouse built under Part 20 is excluded
• A relevant planning condition or Article 4 direction may remove the right

Class F does not impose a blanket exclusion on article 2(3) land or within listed-building curtilage. However, separate heritage controls, relevant directions and planning conditions still require checking. The existing building and use must be lawful.

Do you need an application?

There is no Class F prior approval procedure. Where all requirements are met, the GPDO grants planning permission. A certificate of lawfulness for proposed development can formally confirm the planning position.

Keep a plan showing the principal elevation, highway, curtilage boundary, proposed or replacement area and runoff destination. Those details are more useful than simply labelling the drawing “permeable driveway”.

Sources and Class F legislation

Checked against the current GPDO Part 1 and article 2 definitions. The government householder technical guidance provides explanations and examples, but must be read with subsequent amendments to the legislation.

Page Updated: 25th September 2026