How to start a container storage business (UK)

Container storage is no longer the fringe of UK self storage — it is how the industry now grows. Container sites accounted for 40% of new store openings in the SSA UK / Cushman & Wakefield 2026 Annual Industry Report, and the reason is arithmetic rather than fashion: a container site opens for a fraction of the capital of a built store, expands one lorry delivery at a time, and can pack up and move if the land underneath it stops cooperating.

This guide is the practical route in: what the model does well and where it struggles, choosing a yard, what containers cost and which grades to buy, setting the site out, and the phased buy-as-you-fill model — with illustrative day-one numbers. It is the container-specific companion to our full guide to starting a self storage business in the UK.

Why containers took over new openings

Three properties of the model explain that 40% figure.

The capital hurdle collapses. A built storage facility is a six- or seven-figure commitment — land, construction, fit-out and professional fees, all spent before the first customer arrives (our guide to the cost of building self storage has the current benchmarks). A container site replaces most of that with stock you buy a batch at a time, from about £1,250 ex VAT, delivered, per used 20ft container.

Capacity arrives in increments. You open with a modest first row, let it, and buy the next batch out of licence-fee income. Your capital expenditure tracks your actual occupancy instead of your optimism — an unusually forgiving financial property for a first business.

The asset is relocatable. Containers are moveable stock with a liquid secondhand market. If the site underperforms, the lease on the yard ends, or a better location appears two miles away, the boxes move with you or sell on. In a fitted-out building, the capital is welded to the postcode.

The honest downsides

The model's economics are real, but so are its frictions — and it is cheaper to meet them on this page than on site.

• Planning friction on open land. The commonest misconception in the sector is that moveable boxes escape planning control. They generally do not (one paragraph on this below), and the application process on a bare field or paddock is the slowest, least certain part of most container projects.
• Condensation and ventilation. A steel box breathes with the weather: warm, moist air condenses on cold steel, and a poorly ventilated container can drip onto stored goods. Good units have vents; good operators add pallets under goods, moisture absorbers in winter, and honest customer expectations — a container is not a heated, humidity-controlled indoor store.
• Aesthetics. Rows of corrugated steel read as industrial, which shapes both planning outcomes and drive-past perception. Muted single colours, tidy rows, decent fencing and some real landscaping are cheap; a site that looks like a scrapyard prices itself accordingly.
• A lower revenue ceiling per square foot. The industry's average revenue of £27.40 per sq ft ex VAT (SSA UK/C&W 2026) is pulled upward by high-spec indoor and multi-storey urban stores; container sites typically sit well below that line. The honest comparison is the return on the capital you actually deployed — where the model shines — not revenue per square foot, where it never will.

Planning permission, in one paragraph

Assume you need it. Stationing containers on open land to run a storage business is normally development in planning terms — a material change of use, usually alongside the hardstanding, fencing and lighting that make the site work — so a field, paddock or yard with no storage history should be priced and programmed on the basis of a full planning application, with pre-application advice from the local planning authority before you commit to the land. Existing agricultural buildings are the notable exception: England has a permitted-development route for converting them to storage use. Land that already has lawful storage or distribution use is the other shortcut worth hunting for. Whatever the route, settle the planning position in writing before a single container is ordered.

Choosing the yard

Container economics are won and lost at site selection. What the model specifically needs:

• Hardstanding, or the budget to create it. Containers want a firm, level, drained base. A yard with usable concrete or compacted hardcore already down can save a five-figure groundworks bill.
• HIAB access. Containers arrive on a lorry with a lorry-mounted crane (a HIAB) that must enter the site, reach each container's final position and swing its load safely. Check gate widths, overhead cables, tree cover and turning space before you fall for a yard — a site a HIAB cannot serve is not a container site.
• Security bones. A defensible perimeter, clear sightlines, no public route through the middle. Fencing, lighting and CCTV can be added; a leaky boundary is harder to fix.
• Visibility and catchment. Storage demand is local, and a yard on a road your customers already drive is a permanent free advert. The catchment maths is the same as for any storage format and is covered in the main guide.
• Power. Lighting, CCTV, a gate controller and broadband all want mains power. A yard without it can run on solar and batteries, but cost that properly, early.

Tenure deserves a deliberate decision. Buying land maximises control, but starting on leased land is how most low-capital container operators actually begin, because it preserves cash for the stock that earns. If you take a lease, negotiate the longest term you can with break clauses in your favour: the groundworks and security spend cannot leave with you, even though the containers can. Farmyards score unusually well on this whole list — existing concrete, existing gates, an owner on site — which is why farm diversification into storage gets its own guide.

Buying the containers

The 20ft container (roughly 160 sq ft) is the industry workhorse: the unit customers understand, straightforward to deliver and reposition, and quick to re-let. The buying decision is mostly about grade:

• New "one-trip" containers have made a single loaded voyage from the factory. They cost more, look better, seal better and last decades — the default where kerb appeal and low maintenance matter.
• Used containers — commonly sold under labels like "wind and watertight" or cargo-worthy, though grading definitions vary by seller, so inspect rather than trust the label — are the value route. Cosmetic dents and surface rust are normal; structural rust, floor damage and leaking door seals are not.

Current published guide prices from named UK suppliers are set out in the figure below. Condition moves the price hard: Billie Box’s 2024 guide puts used 20ft units, across condition grades, at roughly £800–£1,900.

The CS Containers from-prices are ex VAT and include HIAB delivery; the Billie Box range is its published price guide. Prices move with the shipping market and with condition, so treat these as dated anchors, not quotes. Note the 40ft arithmetic: nearly double the space of a 20ft for modestly more money — but a 40ft unit suits far fewer customers, and operators who buy them usually subdivide or reserve them for business users. Standardising on 20ft units keeps the site, the pricing and the re-letting simple.

Before accepting any used unit, check it the way the trade does: doors that open, close and lock smoothly with gaskets intact; a roof free of ponding dents; a floor that is solid and free of odours from previous cargo; and no daylight visible from inside with the doors shut. That last test finds in thirty seconds what a sales description never mentions.

Setting up the site

Setting up a container storage site is mostly groundworks and services rather than containers. The containers themselves arrive ready; what you are building is the ground they stand on, the aisles customers drive down, and the security that makes the site sellable. Get the base and the aisle widths right at the start, because both are effectively permanent once forty containers are sitting on them.

• Base and bearers. Level the ground, sort drainage with a slight fall, and set containers on bearers or blocks so air moves underneath — it keeps floors dry and slows corrosion from below.
• Rows and spacing. Doors face the aisles, and aisles take a Transit van plus fully open container doors comfortably. Err generous — tight aisles cost lettings and paintwork forever — and leave a turning head so vans never reverse blind.
• Lighting and CCTV. Letting features as much as security measures: customers visiting after dark decide within a minute whether the site feels safe.
• Gate and fencing. A solid perimeter and a controlled gate — a keypad at entry level, smart-entry systems as you grow — define the product you are actually selling, which is confidence as much as space.
• Signage. A clear board with your web address and prices working the road frontage costs little and sells around the clock.

The phased model: buy as you fill

Here is the sequence successful container operators actually run — a staged plan, not a leap. The triggers matter more than the timings: expand on evidence, never on hope. (For calibration: mature UK stores average 79.6% occupancy, per SSA UK/C&W 2026 — a fair benchmark for "proven".)

Two honesty notes. First, low capital is not no capital: even a leased-yard start needs the opening batch of containers — £25,000–£37,000 ex VAT for twenty units on the supplier prices above — plus quote-dependent site works and a working-capital cushion for the fill-up months. Second, the trigger discipline is the model: buy sixty boxes on day one and you have quietly rebuilt the exact capital risk the model exists to avoid.

A 20-container day one, in numbers

Everything in this section is illustrative. Rebuild it with quotes and your own catchment's prices — the structure, not the figures, is the point. Revenue figures are ex VAT.

On the revenue side: at an illustrative £110 per container per month — set your real price from what nearby sites charge, not from this page — twenty containers full is £2,200 a month, and roughly £1,750 at the 80% mature-store benchmark. Against a modest leased yard and the format's low fixed costs, sites of this shape typically cover their running costs somewhere between half and two-thirds full; beyond that, each additional let is nearly all margin, which is what funds stage two. A fuller version of this maths, worked through a 60-unit site with cost lines, sits in the day-one economics section of the main guide.

Running it: licences, billing and access

A container yard is cheap to open and surprisingly easy to run badly. The discipline that separates a business from a field of boxes:

Licence agreements, signed before goods go in — every time. Storage customers occupy under a storage licence, not a tenancy: the customer pays a licence fee for permission to store goods, and the operator keeps control of the site. Have the agreement drafted properly once, then e-sign it at move-in as part of an online checkout, so "everyone is on signed, current terms" stays true without chasing paper.

Published prices, bookable online. Storage demand shops with urgency — a completion date, a van booked for Saturday. The site that shows prices and takes a booking at 10pm wins customers a phone-first competitor never meets.

Automated collection and arrears. Sixty licence fees collected by hand each month is a part-time job; collected by Direct Debit with automatic reminders, it is nothing at all. Arrears should escalate on a schedule set once — reminders, then restricted access (overlocking) — not on whether you happened to notice. On a gated site, access control ties in directly: an entry code that suspends automatically when an account is seriously overdue enforces your terms without a confrontation at the gate.

One system, priced for small sites. This layer — website, checkout, e-signed licences, billing, collections, reporting — is what storage management software exists to do, and it is not an enterprise expense: StoreBay is £63/month +VAT including your first 50 units, then £0.48 per unit +VAT, so a 60-container site runs on £67.80/month +VAT (full pricing).

The containers are the easy part — every yard has them. The operators who take the catchment are the ones whose prices are public, whose agreements are signed, whose collections run themselves, and whose capital never got ahead of their occupancy.