Small Self-Storage in a Converted Unit or Barn

Divide a spare industrial unit or farm building into lockable storage rooms and rent them out monthly.

Rows of roll-up storage unit doors along a secure facility corridor.
Startup cost£10k to £50k
Monthly revenue£1.5k to £7k
Time needed6+ h/week
First incomeMonths

Estimates for a small start in the UK, not guarantees.

Official data

459,005 UK companies in this field, 26% registered in the last 2 years

SIC 68209 “Other letting and operating of own or leased real estate”. Source: Companies House, November 2026.

What it is

You take an existing warehouse, unit or farm building and partition it into lockable rooms of different sizes. Customers get access on agreed hours or with an entry code.

Your first three steps

  1. Identify a suitable building (your own, a landlord's or a farm outbuilding) and ask the owner or council about storage use
  2. Sketch a layout with a mix of small and large rooms, and get quotes for partitions, doors, lighting, alarm and CCTV
  3. Set up a simple booking and payment system and offer a few early lets to local people and businesses
Who pays

Households short of space, landlords, small traders, market sellers and local businesses needing flexible stock space.

How it makes money

Monthly rent per room, priced by size. A building you already own or lease cheaply keeps costs low and makes each let count.

Skills that help
  • Organising and record keeping
  • Customer service
  • Basic DIY or managing a builder
  • Local marketing
Watch out for
  • Planning and change of use: check with your local council, especially for farm buildings
  • Fire safety and building regulations for partitions and access: check what applies and consider a fire risk assessment
  • Public liability and property insurance, and the limits on customers' stored goods
  • Your lease or mortgage terms if you do not own the building outright
  • Business rates and VAT on storage rent: check with the council and HMRC
  • Rental terms covering late payment, prohibited items and what happens to unclaimed goods

🔒 Full research report for UK

Real cost breakdown with current prices, licences and registration checklist, local competition, pricing, break-even and a 30-day launch plan, with sources.

Coming soon

Questions people ask

How much does it cost to start a self-storage business in a unit or barn?

Startup costs are typically estimated at around £10,000 to £50,000, depending on the size and condition of the building, how many partitioned rooms you build, and your security and access systems. Your lease or ownership situation will also matter.

What rules should I check before converting a unit into storage?

Check planning and change of use with your local council, especially for farm buildings. Check fire safety and building regulations for partitions, consider a fire risk assessment, and review insurance, your lease or mortgage terms, business rates and VAT.

How much can a converted self-storage unit earn?

Monthly revenue is typically estimated at around £1,500 to £7,000, depending on the number and size of rooms and how many you let. Day-to-day management might take around six hours a week at the lower end.

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Photo: paulbr75 on Pixabay

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