Self storage occupancy rates in the UK

Occupancy is the number the whole self storage business model hangs on. Across all UK stores it averaged 74.5 percent in the SSA UK and Cushman & Wakefield Annual Industry Report 2026, while mature stores averaged 79.6 percent. The five-point gap between those figures is one of the most useful facts in the sector, because it separates the performance of stabilised stores from the drag of new ones still filling up.

This article sets out the UK occupancy benchmarks with sources, explains the difference between all-store and mature-store figures, walks through the three to five year build-up curve every new store goes through, and shows where the listed operators sit. It then covers the question we deal with daily as a finance broker: why lenders watch occupancy so closely, and how it translates directly into how much a storage business can borrow.

What is the average self storage occupancy rate in the UK?

The reference figures come from the SSA UK Annual Industry Report 2026, produced with Cushman & Wakefield: average occupancy of 74.5 percent across all UK stores, and 79.6 percent across mature stores. Occupancy here means occupied space as a share of maximum lettable area, the sq ft measure valuers and lenders use, rather than the share of units let.

Those averages span a market of 3,143 stores on the same report, from institutional multi-storey buildings to small container yards, so the spread around them is wide. Well-run stores in strong catchments operate above 80 percent; immature, poorly located or poorly marketed stores sit far below. The averages are a benchmark, not a target: a store's business plan should be built on its own catchment evidence, then sense-checked against these industry figures.

Why do all-store and mature-store occupancy differ?

The two figures differ because the all-store average includes every new opening, and new stores open empty. With UK lettable space growing around 5 percent a year on the SSA UK and Cushman & Wakefield 2026 report, and 40 percent of new openings being container stores on the same Cushman & Wakefield data, a meaningful slice of the market is always in lease-up at any moment. Those filling stores pull the all-store average down without telling you anything negative about the health of established businesses.

That is why the mature-store figure of 79.6 percent is the better benchmark for an operating business, and the all-store figure of 74.5 percent is better read as a market-level statistic that reflects the pace of new development. A rising gap between the two usually signals a heavy opening pipeline rather than weakening demand.

Anyone appraising a store, or lending against one, should always ask which population a quoted occupancy figure describes. Comparing a four-year-old store against the all-store average flatters it; comparing a store that opened last year against the mature average condemns it unfairly.

How does occupancy build up at a new store?

A new self storage store typically takes three to five years to reach stabilised occupancy. The shape of the curve is consistent across the sector: a fast first year as pent-up local demand discovers the store, a slower second and third year as growth comes from marketing and reputation rather than novelty, then a plateau around stabilisation where move-ins and move-outs broadly balance.

A reasonable planning shape for a well-located UK store is to exit year one somewhere around 30 to 40 percent, pass 50 to 60 percent during year two or three, and reach the high 70s by year three to five, in line with the mature-store average of 79.6 percent on the SSA UK and Cushman & Wakefield 2026 report. Container sites often open with a smaller initial phase and add capacity as demand proves out, which keeps reported occupancy higher through the build-up.

The build-up period is the expensive part. The store carries full operating costs and usually rolled-up or interest-only debt before income matures, which is why development appraisals and loan structures are built around the curve. Discounting hard to drive early occupancy then pushing rates as the store fills is standard practice, so revenue typically lags occupancy through lease-up.

What occupancy do the listed operators run at?

The listed operators publish audited occupancy and give the cleanest view of where stabilised UK portfolios settle. Safestore reported UK like-for-like closing occupancy of 80.6 percent for FY2025. Big Yellow reported closing occupancy of 79.4 percent across all stores in its FY2026 preliminary results. Shurgard's UK portfolio, enlarged by the Lok'nStore acquisition, stood at 80 percent in December 2025.

The clustering around 80 percent is no accident. Sophisticated operators run revenue management systems that trade occupancy against rate: once a store passes the high 70s, pushing price tends to create more revenue than filling the last units at a discount. Very high occupancy, in the mid 90s say, often signals underpricing rather than excellence.

For independent owners these figures are the competitive benchmark. A store trading at 80 percent occupancy with sensible rate growth is performing at institutional standard regardless of its size, and that is exactly how a valuer or a lender will read it.

Why do lenders watch occupancy so closely?

Self storage has no lease covenant. A store's income is hundreds of customers on rolling licence agreements, so the security for a loan is the trading performance of the business, and occupancy is its most visible, most frequently reported vital sign. Lenders read it three ways: the level shows how established the store is, the trend shows whether the business plan is on track, and the volatility shows how sticky the customer base is.

Occupancy never stands alone, because it can be bought with discounting. Lenders pair it with the net achieved rate per sq ft and look at revenue per available sq ft, with the national average revenue of £27.40 per sq ft excluding VAT on the SSA UK and Cushman & Wakefield 2026 report as a backdrop. A store at 85 percent occupancy on collapsing rates is a worse credit than one at 75 percent with pricing power.

On stabilised stores, loan covenants are commonly built around the income occupancy produces, through debt service cover and sometimes minimum occupancy or revenue tests. On development and lease-up facilities, the appraisal's occupancy build-up curve effectively becomes the loan's milestone schedule. When we present a deal to lenders, the monthly occupancy and rate history is the first exhibit they turn to.

How does occupancy drive how much you can borrow?

The chain from occupancy to debt capacity is short and mechanical. Occupancy times net achieved rate gives revenue; revenue minus operating costs gives EBITDA; EBITDA determines both the trading valuation, which sets the loan to value ceiling, and the debt service cover, which sets the affordability ceiling. The lower of the two ceilings sizes the loan. Move occupancy and everything downstream moves with it.

The effect is geared. Because a store's operating costs are largely fixed, an occupancy gain drops almost straight through to EBITDA. Taking a store from 70 to 80 percent occupancy might raise revenue by a seventh but raise EBITDA, and therefore debt capacity, by far more. This is why refinancing on stabilisation is such a powerful step for storage owners: the same building supports materially more debt at 80 percent occupancy than it did at 60, often enough to return most of the equity for the next project.

It also explains lender pricing across the lifecycle. An immature store borrows less, at higher margins, against forecast occupancy; a stabilised store at around the 79.6 percent mature-store benchmark on the SSA UK and Cushman & Wakefield 2026 report borrows more, at keener margins, against evidenced income. We arrange finance at both ends of that curve, and a credible, evidenced occupancy plan is the single most valuable document a borrower can bring to either conversation.