The Mental Health Metric: Student Wellbeing as an Investment Thesis

51.9.

That is the MHI-5 score for UK private PBSA students in 2024. It is the highest it has been in years. And it is still a long way from okay.

The Mental Health Inventory-5 is a standardised measure of psychological wellbeing, scored from 0 to 100. The clinical threshold for “okay” mental health is 60. The pan-European average for students is 57.8. UK private PBSA students, the ones living in buildings purpose-built for them, with communal spaces and maintenance teams and events programmes, are scoring 51.9. They improved from 50.3 the year before. Progress, technically. But when your students are 8 points below the European average and 8 points below the threshold that would indicate they are psychologically fine, the question is not whether the needle is moving. The question is why it is barely moving at all.

The domestic-international gap nobody talks about

The headline number hides something important. International students in UK private PBSA score 56.5 on the MHI-5. Domestic students score 50.2. That is a 6.3-point gap, and it has been consistent across multiple reporting cycles.

This is counterintuitive. International students have every reason to score lower. They are further from home, often navigating a second language, managing tighter finances, and dealing with visa uncertainty. Yet they are doing better. Significantly better.

The explanation is not that international students are inherently more resilient. It is that they arrive with different expectations and different social strategies. They expect difficulty. They actively seek community because they have no existing one to fall back on. They use the accommodation as intended: as a social environment, not just a place to sleep.

Domestic students, by contrast, often arrive assuming the social stuff will happen naturally. When it does not, when the flatmates keep to themselves, when the communal kitchen is a corridor not a gathering place, when the events programme feels like something for freshers and then nothing, they have fewer coping mechanisms. They are more likely to retreat to the familiar: existing friendships maintained digitally, family within driving distance, the bedroom as a default state.

The 50.2 score for domestic students is not a wellbeing problem. It is a community design problem.

The friendship recession

The data that should keep PBSA operators awake at night is not the MHI-5 score itself. It is what is happening underneath it.

Students forming close friendships is trending downwards. Not slowly. Not in a way that can be dismissed as a post-pandemic correction. The trend is structural. And it is happening precisely when the accommodation sector is investing more in community than at any point in its history.

This is the paradox. More events. More communal spaces. More wellbeing messaging. Fewer close friendships. Worse mental health outcomes.

The reason is straightforward once you stop thinking about community as a programming problem and start thinking about it as a psychological one. Humans do not form close friendships through organised activities. They form them through repeated, unstructured, low-stakes proximity. The flat kitchen conversation. The walk to campus together. The spontaneous decision to watch something. These are not events you can programme. They are conditions you can create.

Most PBSA communal spaces are designed for events: cinema rooms, gyms, study areas. These are excellent for marketing brochures and terrible for intimacy. A student will not tell a stranger something real in a cinema room. They might in a kitchen at 11pm when both are making tea and neither has anywhere else to be.

The properties scoring highest on community are not the ones with the best events calendars. They are the ones where the physical layout forces low-stakes interaction. Where the kitchen is the centre of the flat, not a corridor. Where there is nowhere else to go that is more comfortable than the shared space. Where the building itself does the social work that no events coordinator can replicate.

Why this is an investment thesis, not a pastoral concern

Here is where the conversation typically pivots to “and that is why we need more wellbeing support.” Counselling access. Mental health first aiders. Helplines. These things matter. They are also not what this article is about.

This article is about the fact that wellbeing is now a measurable input to financial performance, and most operators are treating it as an output.

The evidence is direct. IIS data shows that community belonging is the leading indicator of NPS. Properties below 7.0 on community almost invariably produce low or neutral NPS scores, regardless of how well the building is maintained or how responsive the maintenance team is. The correlation is not subtle. It is the single strongest predictor in the dataset.

NPS, in turn, predicts retention. Retention predicts occupancy. Occupancy predicts revenue. This is not a theoretical chain. It is the actual commercial model.

Spring 2025 GSL data shows that 71% of students now say their accommodation positively impacts their wellbeing, up 3% year-on-year. Private halls satisfaction has risen to 82%, pulling ahead of university-managed accommodation at 77%. Private halls now outperform university accommodation on condition, management, communication, and support services.

The direction of travel is clear. Students are increasingly choosing, and evaluating, accommodation on the basis of how it makes them feel. Not just whether the Wi-Fi works. Not just whether the room is clean. Whether they feel like they belong somewhere. Whether the place they live is contributing to or detracting from their psychological health.

ESG frameworks are accelerating this. Institutional investors now require wellbeing data in their reporting. Not as a nice-to-have appendix. As a core metric alongside energy performance, carbon footprint, and governance compliance. The problem is that most operators do not have reliable wellbeing data, and the data they do have is not moving.

The measurement problem

Part of the issue is that the sector measures wellbeing badly. Annual surveys capture a snapshot. They do not capture the trajectory. A student who felt isolated in October and found their people by March will report average wellbeing in April. A student who was thriving in October and lost their friend group by February will report the same average. The number tells you nothing about the journey or the intervention points.

What operators need is not better surveys. It is better signals. The kind of data that tells you, in near real-time, whether the social infrastructure of a building is functioning. Are communal spaces being used, and by whom? Are students staying in their rooms more than they were last month? Are maintenance requests increasing in a way that correlates with withdrawal patterns? Are booking patterns for social events showing early drop-off?

This is not surveillance. It is the same kind of operational intelligence that hotels, retail environments, and co-working spaces have been using for years. The difference is that in PBSA, the stakes are higher. A hotel guest who has a poor experience leaves a bad review. A student who has a poor experience for nine months develops patterns that follow them for years.

What the numbers demand

MHI-5 at 51.9 is not a crisis. It is a market signal. It tells you that the current approach to community and wellbeing in PBSA is producing marginal returns. The 1.6-point improvement from 2023 to 2024 is real, but it is not the trajectory that closes an 8-point gap to the European average or an 8-point gap to the clinical “okay” threshold.

The domestic score of 50.2 is a more urgent signal. These are students who are not navigating cultural displacement or language barriers. They are in their own country, in accommodation designed for them, and they are still below the threshold. Something about the product is not working for them.

The declining friendship trend is the signal underneath the signal. It suggests that the problem is not insufficient wellbeing programming. It is insufficient conditions for organic social connection. More events will not fix this. Better building design, better spatial programming, and a fundamentally different understanding of what community means in a residential context might.

For investors, the thesis is simple. Wellbeing is no longer a pastoral concern that sits outside the commercial model. It is the commercial model. Properties that produce high wellbeing scores produce high NPS, high retention, and high occupancy. Properties that do not, do not. The MHI-5 score is not a social metric. It is a leading indicator of asset performance.

The operators who understand this distinction, who treat wellbeing as infrastructure rather than amenity, will outperform. The ones who keep treating it as a marketing line and a counselling referral pathway will not. The data has been clear for some time. The question is whether the industry is ready to act on what it actually says, rather than what it would prefer to hear.

David Chadderton is Chief Marketing Officer at Homes for Students, VervLife, and Orla, overseeing marketing strategy for over 60,000 beds across 56 UK cities. He writes about the intersection of behavioural science, student experience, and the business of where people live.