[Published
OnLondon, 7 June 2019]
Nothing ignites a policy debate like the subject of London’s Green
Belt. You might think Brexit had eclipsed it, but the discussion at a
recent roundtable on the issue showed that the flame still burns bright.
On one side, the Green Belt was held up as an anachronism,
restricting land supply, thereby pushing up house prices in the capital,
pulling the lower rungs of the property ladder further and further out
of reach and deepening London’s affordability crisis. The Green Belt
isn’t even that green, the argument went, accommodating as it does golf
courses, haulage yards, and other economically or aesthetically dubious
uses.
On the other side, the Green Belt’s defenders argue that all of this
is premature, or even beside the point. London still has plentiful and
oft-replenished stocks of “brownfield’’ (previously developed) land.
Allowing London to spread into the Green Belt rather than making the
most of these inner city sites would be socially and environmentally
disastrous; it would hollow out the capital and lead to the pattern of
urban dereliction and car-dependent sprawl that has blighted many US
cities. We should focus – first and last and always – on building out
the brownfield sites within the M25.
These positions are entrenched and passionately defended, though it
is worth noting that some of the arguments seem to be at cross-purposes.
Defenders of the Green Belt do not actually hold it to be an arcadian
idyll. For them, its primary purpose is containment, not beauty. Neither
do (most) advocates for change argue for wholesale abandonment of any
constraints on development, and for the frenzy of speculation and sprawl
that would likely ensue.
But the real problem with both strongly-held position is that they do
not allow for nuance, or the complexity inherent in a system where
planning, consumer choice, housing finance, urban design, international
investment and local politics intertwine. So here are six see-saw
statements – each balanced on a “but” – exploring whether London really
has a land shortage and whether the Green Belt might help address this.
The Green Belt is not all green, but that’s not really the point
When a “green belt” was first proposed by the Greater London Regional
Planning Committee in 1935, it was described both as a recreational
amenity and as a constraint on growth, and was envisaged as being a few
miles wide. When the first green belts were introduced in the mid-1950s,
the focus shifted to the latter function – to checking metropolitan
growth, stopping towns merging with each other and preserving their
character. Leisure and nature conservation were secondary. And as the
population of south east England has grown, London’s Green Belt has been
defensively extended in stages to cover more than 500,000 hectares,
three times the area of Greater London. The “belt” is at least as
important as the “green”.
London has accommodated huge population growth, but at a price
In the post-war period, as Inner London lost population, the Green
Belt prevented the city from sprawling out as many US cities did,
although many Londoners settled – by choice or dispersal – in the new
and old towns that surrounded the capital. Since the tide turned in the
late 1980s, London has housed a population that has grown by a third,
from 6.7 to 8.8 million, within its boundaries. And it has done this
while persistently failing to build the number of new homes that
planners say are needed.
How so? Overcrowding has increased and the number of vacant homes has
fallen but, most dramatically, house prices have shot up – accelerated
by speculative frenzy and in recent years cheap credit – both in London
itself and in the surrounding towns and cities that have seen commuting
increase. If London is to continue to grow, this approach is not
sustainable: building more homes, and in particular more low-priced
homes, has to be part of the solution to what is becoming a crisis for
young Londoners and a threat to London’s economy.
There are ‘sites’ for London’s population growth, but their deliverability is debatable.
The draft London Plan, published in late 2017, maintains that London
can accommodate the vast majority of the 66,000 homes per year that it
needs to built. The Strategic Housing Land Availability Assessment that
underpins the Plan estimates that sites for 65,000 of these can be found
on a mixture of identified and “windfall” sites, many of them in Outer
London.
The Plan has just completed its “examination in public” (a form of
public enquiry) and the planning inspectors will report on their
findings in September. It is fair to say that the examination saw debate
about the realism of housing targets. How could London double the rate
of building, given the current track record, the controversial nature of
building more in Outer London, and the Plan’s clampdown on release of
industrial land (which has supplied 100 hectares a year for development
in recent years, three times the level anticipated)?
Getting planning permission for small
sites around Outer London town centres is likely to be tough, but
planning permission is only the start. London already has a backlog of
permissions, with 300,000 homes – ten years’ supply at current build
rates – in the pipeline. Some of these permissions may be scuppered by
planning obligations, or by the need for investment in infrastructure or
remediation. Others may be being held back by developers nervous about
London’s shaky-looking market. And some may have been secured solely to
establish value for a site, by landowners who have no intention of
building.
Finally, high land prices mean that even when new housing is built,
the viability of affordable housing becomes a matter for intense
negotiation, often stalling schemes. Capital programmes for affordable
housing have been cut to the bone, so without more funding in the
system, it is hard for affordable housing to be built at scale without
market housing to cross-subsidise it.
Density is good for cities, but maximising density isn’t always best
But if London’s remaining sites are scarce and/or difficult, the city
can surely build at higher densities. Within its boundaries, London is
much less densely built than New York, Paris or Barcelona, and the
importance of urban density – to create vitality, make efficient use of
land, and support public transport and other services – has come to the
fore recently. Density is good for cities and citizens.
Yet density cannot be increased across the city simply by turning a
dial. Barcelona has incredibly high density because of its
characteristic block formation. Creating this type of density in London
would require wholesale demolition and reconstruction of a city that
remains dominated by two to three storey terraces and semi-detached
houses. New developments are being built much more densely than in the
past, surging past planning guidelines and taking advantage of lower
levels of car ownership. But this uneven pattern of “lumpy” development
is not only creating community controversy, it is not even making much
difference to the speed of housebuilding.
Developers are simply releasing land more slowly.
Unbuckling the Green Belt would likely be a disaster, but that’s not the only way
Watching the glacial pace of development within London, you can’t
help but wonder whether to be radically disruptive. Ditching the Green
Belt designation would likely lead to a frenzy of activity but maybe not
to so much building.
Many local authorities would still seek to protect former Green Belt
land from development, while the planning system would see a flurry of
applications and appeals, agricultural land prices would spiral upwards
and urban land prices would fall. Some landowners – maybe those with the
deepest pockets and the sharpest lawyers – would secure planning
permission for new development, and some of that development might even
be built, pockmarking the hills and plains around the M25 with new
settlements. So how many new houses would actually be built is pretty
moot, and whether they would be decently designed or planned even more
so.
But there are other ways to open up more housing land. One, which has been
promoted by the Centre for Cities and Barney Stringer from planning consultancy Quod,
looks to areas around railways stations to provide capacity. Taking a
two kilometre catchment area around stations, they estimate that such
sites could provide room for 1.4 million homes within Greater London’s
boundary, or 3.4 million if the whole Green Belt was included. This
would be a more rational form of development, with public transport
access reducing car dependency and enabling “compact city” development.
But there’s still no guarantee that any of these homes would be built,
particularly around Outer London centres where the Green Belt has been
enthusiastically embraced as a brake on new build.
An alternative approach would be that advocated by David Rudlin,
Nicholas Falk and colleagues from urban designers Urbed, in their
winning
submission to the 2014 Wolfson Prize.
Looking at an imaginary city (loosely modelled on Oxford), they
proposed that “rather than nibbling into the fields that surround the
city and all its satellite villages, we should take a good confident
bite out of the green belt to create sustainable urban extensions”.
National government and the Mayor of London could agree to identify and
designate a location for an urban extension, take control of the land,
develop a master plan, and use value capture to invest in roads, rails
and social infrastructure. They could also drive the pace of
development, sharing risks and proceeds with developers willing to
commit to the quality, mix and speed of development required.
Urban extensions might look like a soft option, but they could boost the inner city too
But would an urban extension also drive dereliction, diverting
investment and resources from urban sites? This argument is powerful,
uniting green belt defenders and urban renaissance advocates, but it is
not the inevitable outcome. Firstly, construction and investment
capacity is not fixed; London continues to be a favoured destination for
investment, and workforce capacity can be addressed over time.
Secondly, city centre and urban extension could be made to work together
– some of the value generated within the extension could be earmarked
for reinvestment in city centre sites where infrastructure needs and
market conditions undermine viability. And while an urban extension was
being planned, developers would have every incentive to complete their
work within the city.
Timing is critical, given the years that debating, planning and
building a new piece of city would require. Our first priority should
still be delivering the major planning applications that are within
London’s pipeline. Together with the new sites identified in the London
Plan, these may meet London’s needs for ten years or more, depending on
whether and when “windfall” sites, such as car parks, become available.
But we should be starting work on a Green Belt review now if we are to
have any chance of seeing new homes built by 2030.
This approach may look heavy-handed and statist – and it is – but the
government has assumed powers to build new towns in the past when it
has taken the need for new homes seriously. Legislation to set up new
town development corporations and urban and mayoral development
corporations remains in place. These public bodies can buy up land
(including through compulsory purchase), grant planning permission, and
build homes and infrastructure. Land would need to be bought at existing
(mainly agricultural) prices – rather than “hope values” based on its
end use – in order for value uplifts to fund infrastructure, but this is
a policy change that is already being
advocated by Civitas among others. The main losers would be players in the shadowy land options market, for whom few tears would be shed.
An abrupt switch in policy on the Green Belt would probably be as
disastrous as it is unlikely, but that shouldn’t rule out a sensible,
long-term review or at least a more nuanced debate. The housing crisis
in London and the wider south east is too deeply entrenched and complex
for a single magical solution. A Green Belt review, backed by a clear
commitment to take powers over planning and land ownership, should form a
part of the toolkit for building more homes for the next million
Londoners.