A resin bound surface is porous, but planning treatment depends on the complete build and the rules where you live. In England, a front hard surface can remain permitted development when the surface and base allow water through, or when run-off is directed to a permeable area within the property. Resin bonded is impermeable, so it needs suitable on-site drainage or may require permission. Heritage status, flats and maisonettes, Article 4 directions and other locally removed rights can change the answer. Always confirm with the local planning authority before work starts.
Permeable (bound) vs not permeable (bonded)
This distinction decides almost everything. Resin bound leaves an open network of voids, so the surface layer is porous. Resin bondedlays a solid film of resin with stone scattered on top, forming an unbroken membrane that behaves like concrete. Note that a resin bound overlay on an impermeable base does not create a fully permeable driveway; falls and on-site drainage still need to be designed. (See resin bound vs resin bonded.)
The England rule (the 5 m² test, Class F)
In England, domestic hard surfaces are governed by Class F, Part 1, Schedule 2 of the Town and Country Planning (General Permitted Development) (England) Order 2015. The Class F drainage condition applies when both are true: the surface lies between the principal elevation and a highway; and the area covered or replaced exceeds 5 m². In that case the hard surface must be porous, or run-off must be directed to a permeable area within the property, for the work to remain permitted development. Other restrictions can still apply. See the Government’s guidance on the permeable surfacing of front gardens and the Planning Portal.
England: meeting the drainage condition
For an English house, if your front surface exceeds 5 m², the drainage condition can be met if either it is built from porous or permeable materials (such as a complete permeable resin bound system), or surface-water run-off is directed to a permeable area within your own property (a lawn, border or soakaway). The permitted-development right applies to houses, not flats and maisonettes, and it may have been removed locally.
Scotland, Wales and Northern Ireland
Wales: new or replacement hardstanding at the front must use permeable or porous materials, or direct run-off to a permeable area at the front. Its 5 m² exception is specifically for repairing or replacing a small area of existing hardstanding — see the Welsh Government’s guidance. Scotland: Class 3C has no fixed area threshold; a hard surface between the house and a road must be porous or drain to a porous area within the property. Planning permission is required in conservation areas and within the curtilage of listed buildings under that class — see Scottish Government guidance. Northern Ireland: a front hard surface over 5 m² must be porous or direct run-off to a porous area within the property to remain permitted development. Access onto a trunk or classified road is a separate consideration; see this Northern Ireland legislation (Part 1, Class E). In every nation, check whether rights have been removed for the property.
What SUDS means
SUDS stands for Sustainable Drainage Systems — designs that manage rainwater near its source rather than dumping it into sewers, reducing flooding and pollution. The front-garden rules were introduced in October 2008 after widespread flooding showed that paved-over gardens had cut natural soakage. A resin bound surface on a suitable open-graded base can form part of a SuDS design, but compliance depends on the whole drainage build-up, ground conditions and local requirements.
Drainage where the surface is not permeable
If you choose an impermeable surface, or your soil is heavy clay, run-off must be handled on-site: linear channel drains (such as ACO) piped to a soakaway; a suitably designed soakaway; or another approved drainage system. In England, Approved Document H normally locates a soakaway at least 5 m from a building, but requirements and ground suitability must be checked for the site and nation. An infiltration test helps establish whether the ground drains well enough.
Dropped kerbs and other consents
Permitted development does not waive other approvals. A dropped kerb or vehicle crossover normally needs approval from the relevant highway or roads authority, and access onto a classified, trunk or protected road can also require planning permission. The categories and process differ across the UK. You may also need a build-over agreement near a public sewer or listed-building consent.
England: do you need planning permission? Quick guide
- Front, 5 m² or less → the Class F drainage condition does not apply, but check other restrictions.
- Front, over 5 m², complete porous build → normally permitted development.
- Front, over 5 m², impermeable but draining to a porous area within the property → normally permitted development.
- Front, over 5 m², impermeable without compliant on-site drainage → apply for planning permission.
- Flat or maisonette, or a house with permitted-development rights removed → ask the local planning authority.
A properly designed permeable resin bound build can simplify the drainage condition, but confirm the site-specific position before starting. To price one, use the cost calculator.