As urban homes get smaller, the demand for self-storage is rising steadily....

https://markets.businessinsider.com/news/currencies/optima-self-store-highlights-market-trends-fueling-increased-investment-interest-in-the-uk-self-storage-sector-1036217240

As urban homes get smaller, the demand for self-storage is rising steadily. Operators are hitting strong occupancy levels, making these sites a reliable play for investors. It is no longer just a niche asset but a core part of the modern property market