Why Shipping Container Self Storage is Booming in the UK

The UK Self Storage Market at a Glance

Recent data from Self Storage Association UK and Cushman & Wakefield highlights just how strong the sector has become:

• £1.3 billion - UK self storage market turnover (2025)
• 3,100+ total sites now operating across the UK
• 1,200+ external/container sites in the UK
• 40% of all new sites are container-based - fastest-growing segment
• 67.5 million sq ft of total storage space
• 76% of customers are households - demand is now mainstream
• 27% of users need storage due to lack of space at home
• 55-64 year olds are the largest customer group (31%)
• Only 55% of operators show pricing online - huge opportunity to stand out
• Up to 40% of customers drop off due to poor digital journeys (e.g. hidden pricing, poor user journey)

The market is growing fast, being reshaped by container storage, and the biggest competitive edge now sits in local visibility and frictionless online conversion.

Container Storage: The Fastest-Growing Segment

One of the biggest shifts in the UK self storage market isn’t just growth, it’s how that growth is happening.

Increasingly, new supply isn’t coming from traditional indoor facilities, but from shipping container and external storage sites. Driven by lower setup costs, faster development timelines, and strong demand for simple, accessible storage, container sites are rapidly becoming the preferred model for new operators and investors alike.

• 40% of all new storage sites in 2025 were container-based (up from 29% in 2024)
• 39% of all UK storage sites are now container/external
• That’s an estimated 1,200+ container sites nationwide

Container storage is not just growing, it’s quickly becoming a core part of the market, reshaping how and where storage is delivered across the UK.

What’s Driving Demand and Performance?

The growth of container storage is being driven by a mix of strong performance, everyday demand, and changing customer expectations.

Key performance benchmarks to consider for your site:

• 75% average occupancy (up to 79% mature sites)
• £29 per sq ft average revenue
• 70-80% = healthy occupancy range

Why people use self storage:

• 27% - Not enough space at home
• 22% - Moving house
• 55–64 = largest customer group (31%)
  

Why customers choose external sites over indoor sites:

• Drive-up access
• No lifts or corridors
• Faster, simpler experience
• Convenient locations

How customers book:

• 69% of enquiries come via websites
• 40-60% offer full online booking

How customers find you online and what matters to them:

• “Storage near me” dominates
• Local reputation > brand
• Security and weatherproofing still matter

Customers aren’t looking for complex or premium, they’re looking for simple, local, and convenient solutions to real-life problems. The sites that perform best aren’t necessarily the biggest or most expensive, but the ones that remove friction, show up locally, and make it easy to book.

In a market that’s growing and becoming more competitive, success will come down to this:
Be visible, be simple, and be easy to buy from.

Pricing Transparency: The Biggest Missed Opportunity

One of the most overlooked trends in self storage marketing is how pricing is presented online, and the impact it has on conversions.

The key stats:

• Only 55% of UK storage operators show pricing on their website
• Yet 82% of customers expect to see prices online before enquiring
• Poor digital experiences can lead to up to 40% of users dropping off before enquiring

That’s a huge disconnect between what customers expect and what many operators provide.

What happens when pricing is hidden?

• Lower website conversion rates
• More abandoned sessions
• Increased reliance on phone/email enquiries
• Friction in the customer journey

You don’t just lose enquiries, you lose ready-to-buy customers

What happens when pricing is visible?

• Higher online conversions
• Faster decision-making
• More direct bookings
• Better performance from SEO and paid ads
  

Transparent pricing aligns self storage with how people already buy everything else online.

Why this matters even more for container storage
External storage customers are:

• More price-sensitive
• More local-search driven
• More likely to need storage quickly

Which means: Pricing transparency isn’t just helpful - it’s critical

The key takeaway
The industry is shifting from:

• Old model: Hide pricing → force enquiry → rely on sales
• New model: Show pricing → reduce friction → maximise conversion

And the winners will be those who adapt fastest.

Where the Market is Heading

Step back from the individual stats and trends, and a much bigger shift becomes clear. This isn’t just a growing industry, it’s a changing one, with container storage playing a central role in shaping what comes next.

Container storage isn’t replacing traditional self storage, it’s expanding the market, opening it up to new customers, new locations, and more everyday use cases.

What will happen over the next 12 months

• More container sites opening
• Potentially 50%+ of all new supply
• Increased local competition
• A continued push toward better customer experience

Final thoughts
Self storage is becoming...

• More accessible
• More flexible
• More aligned with real life

...and container storage sits right at the heart of that shift. It’s no longer the backup option, it’s quickly becoming the go-to solution for how people create space.