Building a tennis court in a large garden

A domestic tennis court consent question splits into three separate answers, and most people get the wrong one because they think of the court as a single project. The hard surface itself is usually permitted development. The fencing around it usually is not. And the floodlighting will not be. So a court built without lights and with 2 m boundary fencing can often go ahead without an application, while the same court with 3 m mesh and eight columns needs permission for the parts that stick up.

Work through the three elements separately, then check whether anything has removed the rights.

Hard surfaces within the curtilage and the limits

Class F of Part 1 of Schedule 2 to the General Permitted Development Order 2015 permits the provision within the curtilage of a dwellinghouse of a hard surface for a purpose incidental to the enjoyment of the dwellinghouse. A tennis court for the household's own use is incidental, and Class F sets no area limit, which surprises people used to the percentage limits elsewhere in Part 1.

The condition that does apply concerns position. Where the hard surface would be situated on land between a wall forming the principal elevation of the house and a highway, it must either be made of porous materials or provision must be made to direct run-off to a permeable area within the curtilage. That is the front garden rule, and it rarely bites on a tennis court.

Three limits are worth being clear about. The surface has to be within the curtilage, so a court on an adjoining paddock in the same ownership is not covered unless that land forms part of the residential curtilage. It has to be incidental, so a court used by a coaching business is not. And Class F covers the surface, not the engineering operations needed to create a level platform on a sloping site.

Where the court is not within the curtilage, or where the use is not incidental, the whole thing needs permission and the change of use of the land becomes part of the application.

Fencing and enclosure heights that need consent

Class A of Part 2 permits the erection of a gate, fence, wall or other means of enclosure up to 2 m in height, reduced to 1 m where it is adjacent to a highway used by vehicular traffic or adjacent to the footway of such a highway.

Tennis court enclosure is typically 2.75 m to 3 m to keep balls in, so it needs permission. That is the single most common reason a domestic court becomes a planning application, and it is worth knowing before the contractor quotes.

Two design responses reduce the problem. Keep the fencing to the ends of the court, at full height, and drop the sides to 2 m or omit them, which works well on a court with space around it. Or set the court into the ground so that the fence height above the surrounding ground level is reduced, which also lowers its visual effect from neighbouring gardens. Green plastic-coated mesh on dark posts reads far less prominently than galvanised, and planting on the outer face of the fence does more than any amount of design argument.

Floodlighting and why it changes everything

Lighting columns for a tennis court are not covered by the householder permitted development classes, so an application is needed. And the application is judged on a different basis from the court itself, because light travels.

Expect the authority to consider spill light into neighbouring windows and gardens, glare from the luminaires themselves, sky glow in a dark rural area, effects on bats and other nocturnal wildlife, and hours of use. The relevant framework is the environmental zone system and obtrusive light limits published by the Institution of Lighting Professionals, applied through national guidance on light pollution.

A domestic court in an E1 or E2 rural zone is the hardest case, because the limits are tight and the baseline is dark. A Lighting Assessment with a luminaire schedule, mounting heights, tilt, contour plots and a curfew regime is what makes an application decidable, and for a household court the mitigation that usually works is low column heights with tight cut-off optics, warm colour temperature, no upward spill and a time clock switching the lights off at a stated hour.

Be realistic about hours. A request for lighting until 11pm on a court 15 m from a neighbour's bedroom window will be refused. A request until 9pm, with the lights on a timer and the columns positioned away from the shared boundary, is arguable.

An illustrative example. A court in a large garden in a village outside any designation, with the nearest neighbouring house 40 m away behind a mature hedge, proposes six 6 m columns with asymmetric optics and a 9pm curfew. Modelling shows vertical illuminance at the neighbour's first-floor windows within the limits for the zone once the two columns nearest the boundary are moved inboard and shielded. The figures are illustrative and every site needs its own modelling.

Levels, retaining structures and drainage

A tennis court needs a flat platform, and gardens are rarely flat.

Cut and fill on a sloping site is an engineering operation and can require permission in its own right, particularly where it involves a retaining wall, a raised platform or a significant change in ground level. A 1.5 m retaining wall along one side of a court is a structure that affects the neighbour's outlook, and it is the element most likely to generate an objection even though nobody objects to tennis.

Drainage also needs thinking about. A porous macadam or artificial grass court over a permeable sub-base handles its own rainfall. An impermeable surface concentrates runoff, and directing it onto a neighbour's land or into a watercourse without consent creates a civil problem as well as a planning one. Where a soakaway is used, it needs to be sized on an infiltration test rather than an assumption.

Two further practical points. Spoil from a cut needs removing, which means lorry movements along a residential lane. And a court built up on fill behind a retaining wall changes the flow of surface water across the garden, so look at where the water used to go.

Trees, hedgerows and root protection

Courts take up 600 m2 or more of level ground, and in mature gardens that ground usually has trees on or around it.

Where a tree is protected by a Tree Preservation Order or stands in a conservation area, works affecting it need consent or notification, and that includes excavation within the root protection area as well as pruning or felling. The root protection area under BS 5837:2012 is calculated from stem diameter, and a court excavation inside it can sever enough root to kill a mature tree over several years. A tree survey to that standard with a constraints plan tells you whether the court fits before the design is fixed.

Hedgerows in the countryside may be protected under the Hedgerows Regulations 1997, which require notice before removal of a countryside hedgerow. Garden hedges are generally outside those regulations but may still be worth keeping as screening.

No-dig construction using a cellular confinement system over the existing ground level is sometimes the answer where part of the court falls within a root protection area, but it constrains the levels and needs an arboriculturist's method statement.

Conservation areas and Article 4 directions

On designated land the calculation changes, and an Article 4 direction can remove the permitted development rights altogether.

Check three things before assuming Class F applies. Whether the property is in a conservation area, a National Landscape, a National Park or a World Heritage Site. Whether an Article 4 direction covers the area and which classes it removes, since directions in conservation areas commonly remove householder rights including hard surfaces. And whether the house is listed, in which case the curtilage and the setting both come into play and the court will need permission on design grounds even if the surface would otherwise be permitted.

A Lawful Development Certificate is the only formal way to confirm that works are lawful, so where the position is finely balanced and the cost of being wrong is high, apply for one rather than relying on an opinion.

What to include if permission is needed

For a court with fencing above 2 m, lighting, or on designated land, the pack is straightforward.

1. A site plan showing the court position, dimensions, distances to every boundary and to neighbouring habitable windows.
2. Existing and proposed levels with sections through the court and any retaining structure.
3. Elevations of the fencing and lighting columns with heights, materials and colour.
4. A lighting layout with contours, luminaire data, mounting heights and the proposed curfew.
5. A tree survey and constraints plan where trees are nearby, with a method statement for any encroachment.
6. A drainage note covering surface type, run-off and any soakaway with its test results.
7. A Design and Access Statement where the site is designated, covering screening, planting and the effect on the wider landscape.

The same issues, at a larger scale and with noise added, arise on proposals such as a go-kart or off-road track, where recreational hard surfacing and lighting in the countryside are the substance of the case.

One honest uncertainty. Whether a particular area of garden or paddock forms part of the residential curtilage is a question of fact that officers answer differently, and it determines whether Class F applies at all. Where the court is proposed on land beyond the immediate garden, raise it with the authority before starting work.

Enter your postcode on PlanScope to see which documents a court proposal is likely to need.

This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it.

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