The case for a positive 10-year sector view

UK penetration remains a fraction of US levels

Full convergence with US penetration is not assumed. A move from 0.82 to c.1.2–1.5 sq ft per person over a decade — still under a quarter of US penetration — would nonetheless represent a material increase in absorption, delivered at rents 2–3x US levels (UK avg £27.40/sq ft; London £42.39).

Structural demand drivers

2026: record turnover, institutional capital arriving

Capital markets signal. Savills describes 2026 as a year of renewed investment activity, with capital flowing into well-located modern facilities. US institutions — including net-lease REITs — are entering the UK, supporting the develop-to-core exit route. Supply growth of 7.2% also indicates increasing competition for sites; catchment-level analysis is increasingly important.

Why US and UK storage cultures differ — and why it matters

Observation: the UK market is developing as a lower-volume, higher-rent variant of the US model — supply-constrained rather than volume-led.

Matching industry age: US from 1964 vs UK from 1995

Market conditions: US mid-1990s vs UK 2026

Observation: the US experienced its largest development phase in the decade following institutional entry, and its 2025–26 consolidation wave shows institutional appetite for storage platforms remains active. The UK appears to be entering a comparable period, with planning acting as a constraint on competing supply that was absent in the US.

Penetration by market: UK leads Europe; all sit well below the US

Penetration relative to market age, by country

The pattern: each market appears to follow a similar adoption curve at its own lag. The UK is the most mature and has attracted institutional capital first; Germany is the largest under-penetrated major market. A UK-focused strategy operates in the most developed and liquid market, with continental markets as a potential longer-term extension.

Sixty years of US data: what separates strong and weak city markets

Observation: penetration alone does not determine outcomes. Three profiles emerge: supply-constrained dense cities (Boston, NYC, Chicago) hold pricing power; high-supply growth cities (Dallas, Atlanta) absorb through in-migration; high supply without demand density (Lubbock, Fayetteville) produces rate decline. US national benchmark: c.7.8 sq ft per capita.

London and the South East match the constrained-density profile

Observation: London combines the highest population growth forecast among major European cities (+6.5% vs Paris −4.6%, Berlin +0.3%) with constrained supply and the UK's highest rents — the same profile as the strongest-performing US cities. Savills identifies East London (Newham, Redbridge at 0.30, Greenwich, Bexley) as undersupplied, and concludes many London micro-markets will support over 2.0 sq ft per capita. The South East commuter belt at 0.8–1.35 sq ft per capita, against a demonstrated 2.0+ absorption ceiling, represents the clearest expression of this profile.

Format blueprint: what the leading operators now build

Ramp-up economics: the published lease-up curve

What shortens the curve — six levers evident across Big Yellow, Safestore, Shurgard and the US REITs:

1. Visibility-led sites — the store recruits its own customers; passing-traffic frontage reduces acquisition cost per lease.
2. Digital acquisition — reserve-to-move-in online in minutes captures the 79% of customers who need storage within days.
3. Granular small-unit mix — more price points, faster absorption, higher achieved £/sq ft.
4. Business anchor — offices and business hubs land larger, stickier lettings early in lease-up.
5. Phased fit-out — opening with part-fitted floors matches capex to occupancy and lifts early yield-on-cost.
6. Dynamic pricing from day one — weekly ML-set rates trade occupancy against rate optimally through the curve.

Typical store P&L at stabilisation — published unit economics

Observation: roughly two-thirds of every revenue pound reaches store EBITDA. The cost base is largely fixed, so revenue growth from rate and occupancy drops through at high margin — the mechanism behind the lease-up returns curve on the previous page.

Inputs from Safestore FY 2025 results: UK LFL average rate £30.71 / sq ft, occupancy 80.6–81.8%, ancillary 16% of revenue, LFL cost of sales 32% of revenue, cost per store ~£9.0m. Illustrative, rounded.

What the rent allows you to pay for land

Back-solved from the store P&L: EBITDA at each rate → maximum total development cost at a 10% yield-on-cost hurdle → residual land budget after ex-land costs of ~£8.75m.

Observation: at UK-average rents the land budget is thin — around £1m per acre — so returns are made on land buying discipline. At £35+ the residual widens sharply, and at London rates the model supports £4–5m+ per acre, which is why the majors compete hardest inside the M25. Every £1/sq ft of rent adds roughly £350–370k to the land budget.

Constant basis: 55,000 sq ft, 82% occupancy, ancillary 16%, 68% EBITDA margin, ex-land cost £8.75m, 1.25-acre site. London build costs typically run 10–15% higher, trimming the top-row residual. Illustrative, rounded.

United Kingdom: market structure and leading operators

Observation: the top 5 operators hold c.42% of UK stores — a fragmented market undergoing consolidation, in which institutional-grade assets remain in demand from consolidating buyers.

Store counts approximate (2025/26 public sources). Private operators do not disclose turnover (n/d) — listed-company figures from FY2025 reports.

Germany: market structure and leading operators

Observation: 84m people at 0.27 sq ft per capita, with only two operators above 40 stores. Germany is the largest under-penetrated major market in Europe; historic cellar provision is declining with urbanisation.

Store counts approximate (2025/26 public sources). Private operators do not disclose turnover (n/d) — listed-company figures from FY2025 reports.

France: market structure and leading operators

Observation: Paris RevPAM runs at roughly twice German levels on constrained urban supply — consistent with the relationship between supply constraints and rental performance.

Store counts approximate (2025/26 public sources). Private operators do not disclose turnover (n/d) — listed-company figures from FY2025 reports.

Netherlands: market structure and leading operators

Observation: at 0.73 sq ft per capita and ~30 years of market age, the Netherlands is the closest analogue to the UK and illustrates the characteristics of a consolidated market: high occupancy, sustained rent growth, and limited room for new entrants.

Store counts approximate (2025/26 public sources). Private operators do not disclose turnover (n/d) — listed-company figures from FY2025 reports.

Spain: market structure and leading operators

Observation: Spain and Germany were Europe's fastest-growing markets 2012–23. Existing trastero usage means familiarity with paid storage is established; growth is concentrated in professionalising the format.

Store counts approximate (2025/26 public sources). Private operators do not disclose turnover (n/d) — listed-company figures from FY2025 reports.

Italy: market structure and leading operators

Observation: Italy is at a stage comparable to the UK in the late 1990s: no scaled operator, early PE entry, low awareness. The investment horizon is likely to exceed 10 years.

Store counts approximate (2025/26 public sources). Private operators do not disclose turnover (n/d) — listed-company figures from FY2025 reports.

Risk factors and mitigations

The Yeats platform: 12–15 sites over ten years

Site filters: 150k+ drive-time population; sub-1.0 sq ft per capita existing provision; land basis that remains viable in the downside stress case. London's gap alone (1.35 vs a demonstrated 2.0+ absorption ceiling) implies 75–90 store equivalents; the wider South East supports a similar number again — market capacity is not the constraint on a 12–15 store programme.

Target locations: the screened list

Observation: every location passes the three filters — 150k+ drive-time population, sub-1.0 sq ft per capita provision, and a rate level that leaves a genuine land budget under the sensitivity matrix. The east and inner-arc clusters carry the strongest land signals; the Kent & Essex corridor trades a thinner budget for lower site competition and existing Yeats presence.

Boxroom: a purpose-built operating brand

BOXROOM

Box it. Drop it. Done.

Boxroom store CGI — the Sunset Pink / Sky Blue identity applied to the building. Brand Guidelines Final V1.0

Consumer brand, digital-first

Built for how storage is now bought: online search, instant reserve, self-serve move-in. The brand is the acquisition engine — designed for search, social and the roadside in equal measure.

Complete brand system, ready to deploy

Wordmark, palette, app UI, website and photorealistic store CGIs are finished assets — every new site opens under an established identity from day one, not a project to be commissioned.

Protected

Boxroom trademark filed under Class 39 (storage services), 2026 — ahead of the wider Yeats marks. The operating name is secured before the first store trades.

Separated operator / owner structure

Boxroom operates; the property sits with the ownership JV. Clean opco structure preserves the propco's institutional exit optionality — REIT, trade or recapitalisation.

Observation: operator evidence is that brand and digital presence drive lease-up speed. Boxroom gives the platform that asset on day one.

Technology-led, multi-site by design

Observation: Public Storage reports 85% of interactions are now digital, with labour costs cut c.30%. Boxroom is built to that model from the outset, not retrofitted onto a manned-counter estate.

In-house development: value captured along the whole timeline

Observation: most storage investors buy one link in this chain. Yeats–Boxroom holds all six — development margin, procurement saving, operating value and platform premium accrue inside the same venture.

Portfolio build: base case and accelerated case

Observation: the base case is the deck's own published inputs, deliberately held flat. The accelerated case changes only two assumptions — SE-weighted rates from the target list, and 2–3 openings per year, the pace institutional capital exists to fund. The CubeSmart–Brookfield JV underwrites 50 stores; 20 is not an aggressive number.

Exit at year 10: three routes, one arbitrage

Observation: the JV builds at 10–12%; every route prices stabilised income near 5.3%. The year-10 decision is only how to take the arbitrage — one transaction, or income.