The UK self-storage market has now reached £1.3 billion in turnover, with total space expanding to 67.5 million sq. ft across 3,143 sites nationwide. These figures reinforce the sector’s position as one of the fastest-growing areas of commercial real estate in the UK, but more importantly, they highlight sustained and consistent demand rather than short-term spikes.

Another Strong Year for the Sector

The Self Storage Association UK Annual Report 2026 has just been released at the annual Self Storage Association UK conference, offering one of the most comprehensive insights into the current state of the UK self-storage market. Produced in partnership with Cushman & Wakefield, the report brings together data from operators, customers and the wider market to give a clear, industry-backed view of performance, demand and emerging trends.

The Shift: Demand Driven by Lack of Space

What stands out most in this year’s report is the growing influence of everyday space constraints. For the first time, the leading reason customers are turning to self-storage is not a major life event, but something far more practical - 27% of users say they simply don’t have enough room at home.

While traditional drivers such as moving house (22%) and other life transitions remain significant, the shift towards “lack of space” as the primary reason signals a broader change in behaviour. Homes are getting smaller, spare rooms are being repurposed for home working, and flexible living arrangements are becoming more common. As a result, self-storage is increasingly being used as an extension of the home, rather than a short-term solution during periods of change.

A Market Led by Domestic Customers

This shift is reinforced by the composition of the customer base, with domestic users now accounting for 76% of all self-storage demand. That balance has tipped firmly towards household use, changing expectations around how facilities are designed and operated. Domestic customers are typically more focused on simplicity, convenience and transparency. They expect clear pricing, an easy booking journey and confidence in security, and they are far more likely to compare options locally before making a decision. As competition increases at a regional level, the ability to deliver a straightforward, frictionless experience becomes just as important as the physical storage space itself.

A Different Story to 2025

Compared to the 2025 report, the narrative has subtly but importantly shifted. Last year’s focus centred around operational performance - revenue growth, occupancy pressures and increasing competition. In 2026, the emphasis has moved towards demand fundamentals. The question is no longer just how operators are performing, but why customers are entering the market in the first place. The answer is becoming increasingly consistent: people need more space, and they are not getting it at home. This makes demand more predictable but also raises the bar for operators to meet those needs in a clear and accessible way.

Container Storage on the Rise

On the supply side, the growth of container storage is one of the more notable developments. The report highlights that 40% of new openings in 2025 were container-based sites, up from 29% the previous year. This reflects a shift in how operators are responding to demand, with container and external storage offering faster deployment, lower upfront investment and greater flexibility in location. For customers, this provides a practical and often more affordable solution, particularly for household storage. For operators and investors, it introduces a scalable model with strong margins and shorter development timelines. Rather than replacing traditional self-storage facilities, container storage is emerging as a complementary offer that broadens access to the market.

An Ageing Customer Base

The report also highlights a clear demographic trend, with customers aged 55–64 now representing 31% of the market. This aligns closely with the key drivers of demand, including downsizing, moving home and managing accumulated possessions. It also has implications for how the customer journey is delivered. While digital tools and online booking continue to grow in importance, this segment places a strong emphasis on trust, clarity and ease of use. A seamless experience matters, but so does reassurance - particularly when customers are storing valuable or long-term belongings.

Investment Trends and Growth Strategy

From an investment perspective, the sector continues to attract strong interest, although the route to growth is shifting. The report points towards a greater focus on new site development rather than acquisitions, driven in part by wider economic conditions, financing pressures and slower transaction activity. At the same time, alternative formats such as container storage are becoming increasingly attractive due to their lower cost base and flexibility. As conditions stabilise, transaction activity is expected to pick up again, but for now, development-led growth is shaping how the sector expands.

2025 vs 2026: What’s Changed

Taken together, the findings from the 2026 report point to an industry that is not only growing, but becoming more clearly defined. Demand is no longer driven purely by moments of change; it is increasingly tied to everyday living. Customers are more consistent in their needs, even if they are not always fully aware of the solutions available to them. For operators, this creates a clear opportunity to position self-storage not just as a service, but as a practical response to modern housing challenges.

The Future of Self Storage

Looking ahead, the fundamentals of self-storage remain unchanged - secure, flexible space available when it’s needed. What is changing is the context around it. As homes continue to adapt to new ways of living and working, the need for additional space is becoming more permanent rather than temporary. The operators that succeed will be those who recognise this shift and respond with a product that is easy to access, simple to understand and aligned with how customers actually use space today.

A note from USS

The USS team really enjoyed attending this year’s SSA UK Annual Conference. It’s always a valuable opportunity to step away from day-to-day operations and take a wider view of the industry - hearing directly from operators, investors and partners on how the market is evolving.

This year’s conference reflected many of the themes highlighted in the latest Annual Report, particularly around changing customer behaviour, the continued growth of domestic demand, and the increasing role of flexible storage solutions. It was also great to see the level of innovation across the sector, from new developments to advancements in technology and customer experience.

Beyond the sessions, the event remains one of the most important points in the calendar for connecting with others across the self-storage industry - sharing ideas, discussing challenges and catching up with both new and familiar faces.

We’re already looking forward to continuing those conversations at FEDESSA 2026.