Play space and child yield by scheme size
Play space requirements follow the child population a scheme generates, not the unit count. Two 60-unit schemes can face requirements differing threefold.
Play space provision is driven by the number of children a scheme is expected to house, not by the number of dwellings, which is why two schemes of 60 units can face requirements that differ by a factor of three. The child yield play space calculation runs in two steps: estimate the child population from the housing mix and tenure, then apply the authority's provision standard per child. In London that standard is expressed as a minimum of 10 m² of playable space per child under London Plan Policy S4. Outside London the figure comes from the local plan or an open space supplementary planning document, and it varies.
Get the yield calculation into the design process before the layout is fixed. Retro-fitting 600 m² of play space into a consented layout usually means losing units.
How child yield is estimated from the housing mix
Child yield depends on three things: the number of bedrooms in each unit, the tenure, and the local household composition. A one-bedroom market flat generates close to no children. A three-bedroom social rented house generates more than one.
In London the accepted method is the Greater London Authority's population yield calculator, applied to the proposed schedule of accommodation by size and tenure. The output is a child population split by age band, and that split then drives what kind of provision is needed rather than just how much.
Outside London, three approaches are in use. Some authorities publish their own occupancy ratios in an open space document. Some accept a calculation built from census household composition data for the relevant area, which is defensible because it is sourced and reproducible. And some set a flat per-dwelling requirement, which is crude but at least predictable.
Tenure is the variable most often got wrong. Where the affordable housing offer shifts during negotiation, the child yield shifts with it, so the play space calculation has to be rerun. That link between the Affordable Housing Statement and the play space figure is worth flagging to the client early, because an increase in family-sized affordable units is usually welcomed by officers and quietly increases the open space requirement at the same time.
Play space standards expressed per child
The London standard of 10 m² per child is the clearest benchmark in English practice and is widely used as a sense check elsewhere. Outside London, standards are often expressed differently, as a quantity of equipped play area per 1,000 population or as a proportion of site area, derived from a local open space needs assessment.
Both approaches run into the same two arguments. Whether the space counted is really playable, and whether it is accessible to the children it is provided for.
Playable space is not the same as amenity space. A communal lawn that nobody can be seen playing on from a window, a strip of planting between a car park and a boundary fence, or a roof terrace locked outside office hours are all amenity space and none of them is playable space. Authorities have become much better at refusing to count them.
Doorstep, local and neighbourhood provision
The age split matters because each band needs a different kind of space in a different place.
| Age band | Type of provision | Typical distance from home | What it looks like |
|---|---|---|---|
| Under 5 | Doorstep playable space | Within about 100 m | Overlooked, enclosed, visible from dwellings, no equipment needed |
| 5 to 11 | Local playable space | Within about 400 m | Equipped play area, informal kickabout, natural features |
| 12 and over | Neighbourhood provision | Within about 800 m | Youth space, ball courts, seating away from dwellings |
Those distances come from the London approach to play and informal recreation and are a reasonable starting point outside London too, though the local standard governs.
Doorstep play is where small and medium schemes meet their requirement, and it is the least costly to deliver well. It needs overlooking from habitable rooms, a safe boundary away from vehicle routes, a surface children can use in winter, and shade. It does not need a piece of equipment, and a well-designed landform with logs and planting often works better than a single spring rocker in a rubber mat.
Youth space is where schemes fail. Teenagers are provided for last, placed where nobody wants them, or omitted on the basis that the scheme generates few 12-year-olds. The result is informal use of the under-5s space, then complaints, then a management problem the service charge inherits.
Where the requirement starts to bite
There is no national threshold. The pattern across local plans is consistent enough to plan around:
- Below roughly 10 dwellings, most authorities seek no on-site provision and either nothing at all or a small contribution.
- Between roughly 10 and 50 dwellings, doorstep provision on site plus a contribution towards local or neighbourhood provision off site.
- Above roughly 50 dwellings, on-site doorstep and local provision, with the yield calculation expected as a submitted document.
- Above a few hundred dwellings, full provision across all three age bands, often with a Play Space Assessment and an open space strategy as separate documents.
The arithmetic of the yield calculation explains why the thresholds sit where they do. A 40-unit scheme of one- and two-bedroom flats may generate fewer children than a 15-unit scheme of three-bedroom houses, so a unit count threshold is always a proxy. Where a scheme sits just under a local threshold but has a family-heavy mix, expect officers to ask for provision anyway, and expect them to be right.
Phasing complicates the position further, because provision has to be available to the occupiers of each phase rather than delivered at the end. That timing problem is covered in more detail in the piece on phasing a large scheme without gaming thresholds.
Overlap with amenity and open space standards
Four separate standards can apply to the same scheme, and authorities generally do not allow one area to satisfy two of them.
Private amenity space covers gardens and balconies for individual dwellings. Communal amenity space covers shared gardens and courtyards. Play space covers playable space by age band. Public open space covers parks, natural green space and formal sport, usually assessed through an Open Space Assessment against the authority's own needs study.
Read the local plan policies side by side and build a single area schedule showing which square metres count towards which standard, with no area counted twice. That schedule is the document that resolves most arguments at validation, and it belongs in the design and access statement as well as in the play space document.
Health is the other overlap. Play provision, walking routes to school and access to green space are determinants that a health assessment covers, so on larger schemes the two documents should be written by people who have read each other's drafts. The thresholds for that document are set out in the guide to health impact assessment thresholds and content.
Commuted sums where provision is impractical
Where on-site provision cannot reasonably be made, a financial contribution secured by a section 106 obligation is the normal route. Three conditions have to be satisfied for it to be lawful.
The obligation must be necessary to make the development acceptable in planning terms, directly related to the development, and fairly and reasonably related in scale and kind to it. Those are the tests in regulation 122 of the Community Infrastructure Levy Regulations 2010, and they apply to a play space contribution as much as to anything else. The restriction on pooling more than five contributions was removed in September 2019, so a contribution towards an existing park serving several schemes is now straightforward.
Ask for the authority's calculation and the identified receiving project. A contribution towards unspecified play improvements somewhere in the ward is vulnerable, and it is reasonable to ask for the project to be named in the obligation.
Presenting the calculation
Show the working. A page of arithmetic beats three pages of policy quotation.
Set out the schedule of accommodation by size and tenure, the yield factors used with their source, the resulting child population by age band, the standard applied with its policy reference, the required area, the area provided by type and location, and the distances from the furthest dwelling to each provision. Add a plan with the provision areas hatched by age band and the distance bands drawn on.
Where there is a shortfall, say so and quantify it, then explain the contribution offered. An assessment that quietly understates the yield to match the space available is the quickest way to lose an officer's confidence on everything else in the submission.
You can see where the play space and open space documents sit alongside the rest of a residential application pack in the full report index.
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.
Frequently asked questions
How is child yield calculated?
From the schedule of accommodation by bedroom count and tenure, applied to local occupancy data. In London the Greater London Authority population yield calculator is the accepted method and produces a child population split by age band. Outside London, authorities publish their own ratios, accept a calculation built from census household composition data, or set a flat per-dwelling figure.
How much play space is required per child?
London Plan Policy S4 sets a minimum of 10 square metres of playable space per child, which is widely used as a sense check elsewhere. Outside London the standard comes from the local plan or an open space supplementary planning document and may be expressed per thousand population or as a proportion of site area instead.
At what scheme size does play space provision start?
There is no national threshold. In practice most authorities seek nothing below roughly ten dwellings, doorstep provision plus an off-site contribution between roughly ten and fifty, and on-site doorstep and local provision above fifty. A unit count is only a proxy, so a small family-housing scheme can attract provision a larger flatted scheme would not.
Can communal garden space count as play space?
Usually not. Playable space has to be usable by children in practice: overlooked, safely separated from vehicle routes, surfaced for winter use and accessible at the times children play. A planting strip, a locked roof terrace or a lawn nobody can supervise from a window counts as amenity space, and authorities increasingly refuse to count it twice.
When is a commuted sum acceptable instead of on-site provision?
Where on-site provision cannot reasonably be made. The contribution must be necessary to make the development acceptable, directly related to it and fairly and reasonably related in scale and kind, the tests in regulation 122 of the Community Infrastructure Levy Regulations 2010. Ask for the authority's calculation and for the receiving project to be named.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.