by Hannah Hickman
Between 2019 and 2021, we led a study at the University of the West of England of 500 planning students studying in planning schools across universities in the UK and the Republic of Ireland. This research explored students’ motivations for studying planning and their expectations for future practice and was published in the journal Planning Education and Research (Hickman, McClymont, Melasecchi 2025).
One of the significant findings was that students were overwhelmingly motivated by environmental and social change, while economic change was rarely mentioned. When asked about subjects they most wanted to learn about, “economic development and growth” ranked near the bottom of the list, rather dispiritingly alongside “research”! Of course, this does not mean that students have no interest in economic development, the economy and growth, but these areas are clearly less instinctively interesting to students than other areas of planning.
This relative lack of interest raises important questions. At a recent panel discussion at the UK and Ireland Planning and Research Conference entitled “the skills gap in planning”, I was asked to reflect on just one of these: “Given how often we hear about viability in UK planning, does this matter?”. I argued that it did, and for three reasons.
Viability is too important to ignore
The first reason is simple: viability – whether a development is financially deliverable – has become one of the most influential factors in contemporary planning practice. We are increasingly told by the development industry that development is unviable (Home Builders Federation, 2026), while planning policy places viability at the centre of decision-making. There are thirty-seven mentions of viability in the latest National Planning Policy Framework in England no less!
The consequences are significant. Securing affordable housing, infrastructure and other public benefits depends upon planners being able to critically engage with viability assessments and negotiate effectively through mechanisms such as section 106 agreements. As Bob Colenutt (2020) argues compellingly in The Property Lobby, viability assessments can become part of a negotiating process in which the numbers themselves are contested. His case studies suggest that some local authorities are neither sufficiently equipped nor sufficiently resourced to interrogate claims made by developers. Recent debates around post-consent design renegotiations point to similar concerns over the ability of planners to resist negative changes when faced with the apparently unremitting logic of viability (McClymont, Hickman and Dembski, 2026).
If planners are unable to engage confidently with viability, they risk being unequal players in the “cynical” (Colenutt, 2020) viability negotiation game, less able to shape the development outcomes (social and environmental) that young planners are purportedly most motivated to achieve.

This is about more than viability
The answer is not, however, simply to teach students more about viability.
The second, and perhaps deeper issue is that planners really do need to understand the relationship between planning, the economy and sustainable development (economy being just one of the three pillars of sustainable development alongside environment and society). The argument is not that planners should become neo-liberal market actors, but engagement with how markets operate is fundamental to understanding what planning can and cannot achieve, and central to being able to engage with important questions central to planning as wide as: will data centres deliver economic growth in a way that benefits communities?’; what’s the relationship between infrastructure investment and economic growth? what does planning for net zero (and doing carbon budgeting effectively), mean for prosperity? Therefore, viability needs to be understood as the sharp end of a much larger discussion: what do we mean by growth, what constitutes ‘good’ growth, and who benefits from it? These questions open up important debates about whether economic growth should remain the imperative, or whether we should instead be planning for post-growth or even degrowth (Savini et al., 2022). Planners need enough economic literacy to engage critically with competing visions of the future and help communities navigate what different forms of growth might mean for them.
Producing critical rather than technocratic planners
There is also a broader question about the kind of planner we want to educate.
Planning has become increasingly framed through numbers, calculations and technical assessments. Yet numbers are not neutral. As Layard (2019) and others have argued, the apparent objectivity of technocratic approaches can obscure the political choices embedded within them. Like viability, the solution does not lie in making planners more technocratic. It is to ensure they understand the economic machinery behind the numbers well enough to challenge it. Without that knowledge, planners risk becoming technicians administering someone else’s definition of reality.
Making economic knowledge matter
If planning students are primarily motivated by environmental sustainability and social justice, then perhaps economic knowledge needs to be taught through the lens of these concerns rather than separate to them. The challenge is not simply to make students learn economics; it is to demonstrate that economic literacy is essential to achieving the very outcomes that motivate many people to enter planning in the first place. Understanding viability, markets and development economics is not separate from being an activist planner. Perhaps it is a prerequisite for being an effective one.
References cited in this blog
Colenutt, B. (2020) The Property Lobby. Policy Press.
Hickman, H., McClymont, K. & Melasecchi, S. (2026), “Planners are Society’s Humanisers”: The Expectations and Motivations of 21st Planning Students, Journal of Planning Education and Research, 46(3), pp. 816–832. DOI: https://doi.org /10.1177/0739456X251377998
Home Builders Federation (2026) The Viability Crunch: Analysing the Impact of Increasing Policy, Tax, and Regulatory Pressures on Home Builders in England and Wales. London: Home Builders Federation.
Layard, A. (2019), “Planning by numbers: affordable housing and viability in England,” in Raco, M. & Savini, F. (eds), Planning and Knowledge: How New Forms of Technocracy Are Shaping Contemporary Cities, pp. 213–224. Bristol: Policy Press.
McClymont, K., Hickman, H. and Dembski, S. (2025) ‘Negotiated, approved … ignored? Regulating development after approval in England and Germany’, disP – The Planning Review, 61(4), pp. 40–54. https://doi.org/10.1080/02513625.2025.2632543
Savini, F., Ferreira, A. and von Schönfeld, K.C. (eds.) (2022) Post-Growth Planning: Cities Beyond the Market Economy. Abingdon: Routledge.
Feature image: Planning students working. Image generated using AI.



























