Storage Unit Size Estimator
Recommended Storage Size
Estimated Volume-
Recommended Unit Size-
Unit Dimensions (approx.)-
Estimated Weekly Cost-
Estimated Monthly Cost-
Storage Unit Sizes & UK Costs 2025/26
| Size | Dimensions | Suits | Weekly Cost (avg) |
|---|---|---|---|
| 16 sq ft | 4x4 ft | Boxes, small items | £12-£20 |
| 25 sq ft | 5x5 ft | Studio flat contents | £18-£30 |
| 50 sq ft | 5x10 ft | 1-2 bedroom flat | £25-£45 |
| 75 sq ft | 7.5x10 ft | 2-3 bedroom house | £35-£60 |
| 100 sq ft | 10x10 ft | 3 bedroom house | £45-£80 |
| 150 sq ft | 10x15 ft | 4+ bedroom house | £60-£110 |
| 200 sq ft | 10x20 ft | Large house / business | £80-£150 |
How to Use This Calculator
1
Choose estimation method
Select whether to estimate by number of rooms or by specific items you need to store.
2
Enter quantities
Input the number of rooms and their contents, or the specific items (boxes, furniture, appliances).
3
Select your region
Choose your region as storage costs vary significantly across the UK, with London being the most expensive.
4
Review recommendations
The calculator shows the recommended unit size, dimensions, and estimated weekly and monthly costs.
Frequently Asked Questions
How big a storage unit do I need?
As a rough guide: a 1-bed flat needs approximately 50 sq ft, a 2-bed house needs 75-100 sq ft, a 3-bed house needs 100-150 sq ft, and a 4+ bed house needs 150-200 sq ft. These assume you are storing most of the contents. If storing only select items, a smaller unit will suffice.
How much does self-storage cost in the UK?
UK self-storage costs average £25-£30 per week for a typical 50 sq ft unit. London is significantly more expensive at £40-£80 per week. Prices vary by region, provider, and whether you commit to a longer period. Many providers offer discounts of 20-50% for the first 8-12 weeks.
What should I look for in a storage facility?
Key factors include: 24-hour CCTV and individual unit alarms, clean and dry conditions, easy vehicle access, flexible contracts (no long lock-ins), insurance options, and accessibility hours. The Self Storage Association UK (SSA UK) accredits facilities that meet quality standards.
Do I need insurance for storage?
Most storage facilities do not cover your belongings under their own insurance. You will need either: the storage company's insurance (typically £3-£5 per week per £3,000 of cover), your own contents insurance (check if it covers items in storage), or standalone storage insurance. Always check what is and is not covered.
How can I reduce my storage costs?
Tips include: declutter before storing (reduce the unit size needed), compare prices across multiple providers, ask about introductory offers, consider slightly out-of-town locations, share a unit with someone, stack boxes efficiently to maximise vertical space, and negotiate if committing to a longer period.
Is climate-controlled storage worth it?
Climate-controlled units maintain consistent temperature and humidity. They are recommended for: electronics, wooden furniture, musical instruments, artwork, photographs, wine, and documents. They typically cost 20-30% more than standard units but can prevent damage from temperature fluctuations and dampness.
Official Sources & References
Data verified against official UK government sources. Last checked April 2026.