Play space and child yield as unit numbers rise
Play space follows children rather than dwellings. Here is how the yield is calculated, what the age bands require and where schemes lose area to officer discounts.
The play space requirement threshold that matters on a residential scheme is not a unit count. It is a child yield, and the two are related only loosely. A scheme of 40 two-bedroom flats can generate fewer children than 18 family houses, and the play space obligation follows the children rather than the dwellings. Get the yield calculation right at the start and the layout can absorb the result. Get it wrong and you are redesigning a courtyard at week eight.
How child yield is calculated
Child yield is estimated from the unit mix, the tenure split and local demographic data, applied as a number of children per dwelling type.
In London the Greater London Authority publishes a population yield calculator that produces the figures officers expect, broken down by age band. Elsewhere authorities use their own multipliers, often drawn from census data for the ward or from a housing needs study, and some simply adopt a figure per bedroom.
Three inputs change the answer.
- Unit size. Family units drive the yield, and three-bedroom affordable rented homes drive it hardest.
- Tenure. Social and affordable rented units typically carry higher child yields than market units of the same size.
- Location. Ward-level demographics vary widely, and using a borough average where a ward figure exists invites a challenge.
Run the calculation before the mix is fixed, because a modest change in the proportion of three-bedroom units moves the yield and therefore the area of play space you have to find.
An illustrative example. A scheme changes eight two-bedroom flats to three-bedroom units to meet a housing mix policy. The unit count is unchanged, the yield rises, and the play space requirement rises with it, taking a slice of the courtyard that the layout had given to cycle stores. Both requirements still have to be met. The figures here are illustrative.
The quantum standard and the age bands
In London the benchmark is 10 m² of play space per child, applied to the yield and split across age groups.
The age bands each carry a distance expectation. Provision for under-fives sits closest to homes as doorstep playable space, typically within about 100 metres. Provision for 5 to 11 year olds sits further out, around 400 metres. Provision for older children and teenagers is expected within roughly 800 metres, and can more readily be met off site.
Outside London, many authorities use benchmark standards derived from the Fields in Trust guidance, expressed through the familiar hierarchy of a local area for play, a local equipped area for play and a neighbourhood equipped area for play. Each carries an indicative walking distance, a minimum activity zone area and a buffer between the equipment and the nearest dwellings.
Take the numbers from the adopted local standard rather than from a national benchmark, because authorities modify them. Where the local plan is silent, say which benchmark you have applied and why.
Where on-site provision becomes expected
Most authorities set a threshold above which play space must be delivered on site, with a financial contribution accepted below it. The figure is local, and it is usually expressed in units rather than in children.
The logic is practical. A scheme of six houses cannot deliver a usable equipped play area, and a scattering of tiny spaces serves nobody. A scheme of 80 homes can and should.
Between those points sits the contested middle, where an authority wants on-site doorstep provision and the applicant wants to pay a commuted sum towards an existing park 300 metres away. That argument is won with evidence: the capacity and condition of the existing facility, the walking route including crossings, and the yield your scheme actually generates. Where the scheme is large enough to go to committee, the position on committee referral thresholds is worth checking, because councillors reliably ask about play.
Designing space that counts
Officers discount space that cannot function, and the discounts are where schemes lose area.
Play space has to be overlooked by homes, level or ramped in approach, separated from vehicle movements, and usable for a reasonable part of the day. Land in permanent shade, strips beside parking courts, and leftover corners between buildings are routinely refused as play provision even when the area adds up.
Inclusive design is a standing requirement, not an enhancement. Equipment and surfacing should allow disabled children to play alongside others, access routes must be usable with a wheelchair or a pushchair, and seating for carers is part of the provision.
Equipment and surfacing are specified to the relevant British Standards for play equipment and for impact-attenuating surfaces. Name the standards in the specification rather than describing products, so the condition can be discharged against something objective. A Play Space Assessment sets out the calculation, the schedule and the design response in one document.
Maintenance, adoption and the money
Somebody maintains this space for decades, and the authority will want to know who before it grants permission.
Two routes exist. Adoption by the council, usually with a commuted sum covering a period of years and calculated from the authority's own maintenance rates. Or retention by a management company, funded through an estate charge, with the obligation secured in the section 106 agreement.
Both have costs that belong in the appraisal early. Commuted sums for equipped play areas are substantial, and inspection regimes under the play equipment standards continue for the life of the equipment.
Buyers ask about estate charges now, and management company arrangements attract scrutiny that they did not attract a decade ago. Where the authority offers adoption, take the offer seriously even though the commuted sum looks painful against a charge somebody else pays.
Where provision is off site, the contribution should be tied to a specified project rather than paid into a general fund, because an obligation must be necessary to make the development acceptable and directly related to it. Ask what the money will be spent on and get it named in the agreement.
What to submit with the layout
Put the whole argument in one place rather than scattering it across the application.
- The yield calculation, with the source of the multipliers and the unit mix used.
- The area required, by age band, against the adopted standard.
- A plan showing each space, its area, its age band and its distance from the dwellings it serves.
- The equipment and surfacing specification by standard.
- The management and maintenance proposal, with the route chosen.
- The case for any off-site element, with the receiving facility named.
Where the scheme also triggers open space requirements more broadly, the Open Space Assessment covers the wider typologies, and the tenure assumptions behind the yield should match those in the Affordable Housing Statement. Inconsistent unit mixes across those three documents is the sort of error that costs a fortnight.
This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it.
Draft the play space and open space documents for your scheme on PlanScope, then test the layout against the yield.
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 worked out?
From the unit mix, the tenure split and local demographic data, applied as children per dwelling type and broken down by age band. In London the Greater London Authority publishes a yield calculator that officers expect to see used. Elsewhere authorities use census-derived multipliers or figures from a housing needs study.
How much play space does a scheme need?
In London the benchmark is 10 square metres per child, applied to the calculated yield and split across age bands. Outside London many authorities use standards derived from Fields in Trust guidance, expressed through local, local equipped and neighbourhood equipped areas for play. Take the figures from the adopted local standard.
How far from homes can play space be?
Provision for under-fives is expected as doorstep playable space close to homes, typically within about 100 metres. Space for 5 to 11 year olds sits further out, around 400 metres, and provision for older children within roughly 800 metres, which can more readily be met off site. Measure real walking routes, including crossings.
Why was our play area discounted by the officer?
Usually because it cannot function. Space in permanent shade, strips beside parking courts and leftover corners between buildings are routinely rejected even when the area adds up. Play space needs overlooking from homes, a level or ramped approach, separation from vehicles and sunlight for a reasonable part of the day.
Who maintains the play area after completion?
Either the council, usually following adoption with a commuted sum calculated from its own maintenance rates, or a management company funded by an estate charge with the obligation secured in the section 106 agreement. Both carry real costs, including continuing inspection under the play equipment standards, so price them early.
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.