How to value a self storage business

A self storage valuation is an assessment of what a trading storage business and its property would sell for as a going concern. Unlike a standard commercial building let on a lease, a storage facility's value comes from hundreds of short, rolling customer agreements, so the valuation behaves more like pricing a business than pricing bricks.

This guide explains how valuers, buyers and lenders actually arrive at a figure: the income approach, EBITDA multiples and yields, the difference between trading value and vacant possession value, and the occupancy and rate assumptions that get accepted or rejected. We arrange finance against these valuations as a broker and introducer; we are not valuers or a lender, and this is not investment advice.

What exactly is being valued: bricks, business or both?

Both, as a single package. A trading self storage facility is valued as a fully equipped operational entity, which means the figure captures the property, the fit-out, the brand presence in its catchment and, above all, the income stream from the unit ledger. RICS-regulated valuers report this under the Red Book as the market value of the going concern, and it is the basis most lenders instruct for storage deals.

This matters because the same building can carry very different numbers depending on what is assumed about the business inside it. A 30,000 sq ft store full of paying customers is worth far more than the identical empty shed next door, and the gap between those two figures is precisely what a buyer is paying the seller for. Understanding which basis a number sits on is the first question to ask of any asking price, valuation report or loan offer.

How does the income approach work in practice?

The income approach values a storage business by capitalising its sustainable earnings. The steps are mechanical. First, establish gross revenue: occupied square footage multiplied by achieved rate, plus ancillary income from insurance, merchandise and van hire. Second, deduct operating costs, including staff, business rates, utilities, marketing, software and insurance, to reach net operating income or EBITDA. Third, apply a capitalisation rate or multiple that reflects the asset's quality and risk.

The discipline is in the word sustainable. A valuer will rebuild the earnings figure rather than accept the seller's: owner salaries get normalised to market cost, one-off items come out, under-market rates get noted but not automatically marked up, and any recent occupancy spike gets tested against the longer ledger. Buyers should run the same exercise before offering, because the difference between reported EBITDA and sustainable EBITDA is one of the most common sources of overpayment in smaller storage deals.

What multiples and yields do UK storage assets command?

Yields and EBITDA multiples are two ways of saying the same thing: a 5 percent yield equals a 20 times multiple, 6 percent equals roughly 16.7 times, and 8 percent equals 12.5 times. The sourced evidence sits at the institutional end. Prime self storage yields were around 5 percent, with secondary at 6 percent and above and relative softness in UK secondary, on Savills' European Self Storage Spotlight for Q4 2025. Big Yellow's portfolio was carried at a weighted average exit cap rate of 5.2 percent, with a year-one net initial NOI yield of 4.9 percent, on its CBRE-valued H1 FY2026 results.

Smaller trading stores, leasehold businesses and container sites price well above those yields, which is to say at lower multiples, because the income is seen as less durable and the buyer pool is thinner. There is no published UK table for this end of the market; pricing is agreed deal by deal, anchored by the institutional benchmarks above and adjusted for tenure, scale, location and the quality of the trading record.

Why do trading value and vacant possession value differ?

Trading value is the price of the business in full flight; vacant possession value is the price of the empty property alone. For a stabilised store the trading value is normally far higher, because years of marketing, lease-up and rate building are embedded in it. The gap between the two numbers is effectively the value of the operating business, sometimes labelled goodwill in an asset sale.

Lenders look at both. The trading value drives the headline loan, but credit teams also want to know what the building would be worth if the business failed, since that is their downside security. A purpose-built store in a strong industrial location may hold much of its value empty; a container site on leased land may have very little vacant possession value at all, which is why container businesses gear lower against their trading value. Sellers should expect buyers and valuers to probe this split, and buyers should use it to sense-check whether an asking price is really paying for income or for hope.

Which occupancy and rate assumptions will a valuer sign off?

Valuers anchor assumptions to evidence, and the sourced benchmarks set the frame. Average occupancy across all UK stores was 74.5 percent, and 79.6 percent for mature stores, on the SSA UK and Cushman & Wakefield 2026 annual report, while the large operators run higher: Safestore's UK like-for-like closing occupancy was 80.6 percent (FY2025 results), Big Yellow closed FY2026 at 79.4 percent across all stores (preliminary results), and Shurgard's ex-Lok'nStore UK portfolio stood at 80 percent in December 2025 (Shurgard FY2025 results). A valuation assuming stabilised occupancy far above this range will not survive review.

On rates, average UK revenue ran at £27.40 per sq ft excluding VAT (SSA UK / Cushman & Wakefield, 2026 report), with London averaging £44.07 per sq ft and the South East £33.90 on the 2025 report. A valuer will accept a store's actual achieved rate where the ledger proves it, but projected rate growth beyond local evidence gets cut. The practical lesson for sellers is that a clean, exportable unit ledger is worth real money at valuation time.

How do lenders read a storage valuation?

Lenders use the valuation to size the loan and the trading accounts to test whether it can be repaid. Loan to value is measured against the going-concern figure, and debt service cover is measured against sustainable EBITDA, usually with headroom: a lender wants the income to cover interest and capital comfortably even if occupancy slips several points below the figure in the report.

Credit teams also stress the valuation itself. They will note the gap to vacant possession value, query any assumptions ahead of the SSA UK benchmarks, and sometimes instruct their own panel valuer rather than rely on a report the borrower commissioned. In our experience arranging storage finance, deals move fastest when the borrower's numbers and the valuer's numbers tell the same story, which is why we help clients assemble the ledger, accounts and market evidence into one consistent pack before any valuer is instructed.

What can an owner do to lift the value before a sale?

Because value is capitalised earnings, every pound of sustainable EBITDA added is worth a multiple of itself at sale. The levers are unglamorous: push achieved rates towards local market evidence rather than leaving legacy customers on old prices, tighten discounting, add insurance and merchandise income, and trim costs that a buyer would not need to inherit.

Just as important is making the earnings provable. Two to three years of clean accounts that reconcile to the management ledger, formal licence agreements, documented rate increases and a tidy planning and title position all reduce the discount a buyer applies for uncertainty. Owners planning an exit in two or three years should start this housekeeping now; it is usually the highest-return work they will ever do on the store.