September 23 2024
Not sure what size storage unit you need? Our simple guide from Ready Steady Store helps you compare sizes from 25 to 200 sqft. With real-life examples, tips, and expert advice to find your perfect fit.
Choosing the Right Storage Space
If you’re thinking about renting a self storage unit, one of the first questions is: “What size storage unit do I need?”
Picking the right size matters, too small and you’ll struggle to fit everything in, too large and you’re paying for space you won’t use. Whether you’re moving home, decluttering, renovating, or storing business stock, this guide will help you work out how much space you really need from 25 sqft to 200 sqft units and beyond.
Storage Unit Sizes Explained
Storage unit sizes are measured in square feet (sqft), which tells you the floor area. Most Ready Steady Store units are between 8–10 feet high, so you can make the most of the vertical space by stacking boxes and furniture.
| Unit Size | Comparable Space | Ideal For | Example of What Fits |
|---|---|---|---|
| 25 sqft | Small Garden Shed | Boxes, seasonal items | 30 medium boxes |
| 50 sqft | Similar size to half a single garage | Small flat or single room | 50 medium boxes |
| 75 sqft | About the size of a small removal van | 1 bdroom flat | 80 medium boxes |
| 100 sqft | About the size of a single garage | 2 bedroom home | 100 medium boxes |
| 150 sqft | garage Size of a large garage | 3 bedroom home | 170 medium boxes |
| 200 sqft | Ideal for storing a whole house | 3-4 bedroom house | 220 medium boxes |
Real-Life Storage Scenarios & Sizes
1. The Declutterer: Making Space at Home
Want to reclaim your spare room, garage, or loft? If you’re storing seasonal decorations, sports kit, or furniture you’re not ready to part with, self storage helps you free up valuable space at home.
Recommended sizes:
- 25 sqft: Kitchen appliances, single mattress, chairs, or hobby gear
- 50 sqft: Contents of a 1-bed flat or larger furniture pieces
Example:
Louise turned her spare room into a home office but had nowhere to put her old furniture. She rented a 50 sqft unit, which easily held her desk, sideboard, and several boxes of books, leaving her space to create her dream workspace.
2. The Mover: Between Homes
Moving house can be stressful especially if you’ve sold before your new home is ready. A self storage unit bridges the gap so you can move at your own pace.
Recommended sizes:
- 75 sqft: Fits the contents of a small 2-bed flat
- 100 sqft: Ideal for a 2-bedroom home with furniture and white goods
- 150–200 sqft: Perfect for a 3–4-bedroom home with outdoor equipment
Example:
Jack and Sarah had a two-week gap between moving dates. Their 150 sqft unit held everything including furniture, appliances, and garden tools safe and secure until moving day.
3. The Renovator: Protecting Furniture During Home Improvements
Dust, paint, and clutter are part of any renovation. Keeping furniture and valuables in self storage keeps your home clean and organised.
Recommended sizes:
- 75 sqft: One or two rooms’ worth of furniture
- 100–150 sqft: Whole-house renovation or long-term project
4. The Business Owner: Stock, Tools & Archives
Self Storage isn’t just for personal use. Many small businesses and online sellers use Ready Steady Store units as flexible, affordable mini warehouses.
Recommended sizes:
- 50 sqft: Boxes of stock, tools, or archives
- 100 sqft: Growing eCommerce or trade businesses
- 150–200 sqft: Pallets, large equipment, or seasonal stock
Example:
A local online retailer used a 100 sqft unit to store packaged stock and shipping supplies. With extended access and flexible terms, it became a low-cost warehouse that grew with their business.

5. The Student: Storage Between Terms
Heading home for the holidays or studying abroad? Self Storage keeps your belongings safe and out of the way until you’re back.
Recommended sizes:
- 25 sqft: Boxes, suitcases, and small personal items
- 50 sqft: Mini fridge, desk, and university room furniture
Example:
Liam and two friends shared a 50 sqft unit over summer. It held their bedding, kitchen gear, and textbooks ready for next term.
6. The Traveller: Long-Term Storage While Abroad
If you’re relocating, taking a gap year, or going on an extended trip, self storage gives you peace of mind while you’re away.
Recommended sizes:
- 50 sqft: Essential personal belongings and small furniture
- 100–150 sqft: Full household storage for families or long-term travellers
How to Choose the Right Self Storage Unit
Not sure how much space you’ll need? Follow these simple steps:
- Make an Inventory – List everything you plan to store; it helps you visualise the total space needed
- Stack Smart – Most units are 8–10ft high. Stack boxes vertically and keep heavier ones at the bottom
- Leave Room to Grow – Expecting to add more items later? Choose the next size up for flexibility
- Use the Online Size Guide – Try our interactive size guide to explore unit sizes virtually and see exactly what fits inside
- Ask the Experts – Still unsure? Call our friendly team on 0800 321 3211, we’ve helped thousands of customers find the perfect fit

Tips to Make the Most of Your Storage Space
A little organisation goes a long way:
- Disassemble large furniture where possible
- Label boxes clearly
- Create a walkway down the middle for easy access
- Store frequently used items near the front
- Use shelving to maximise vertical space
Why Choosing the Right Size Matters
Picking the right self storage unit saves time, money, and stress. A smaller unit may seem cheaper but can be restrictive. A slightly larger one offers room to grow, easier access, and better organisation. Spending a few minutes planning now saves frustration later.
Find the Perfect Storage Space Near You
So, what size storage unit do you need?
From compact 15 sqft lockers for a few boxes to spacious 200 sqft units for an entire household, Ready Steady Store has a flexible, secure, and affordable solution for everyone.

We have convenient self storage locations across the UK, including Manchester, Leeds, Lincoln, and Great Yarmouth plus many more nationwide.
Try our online size guide to see what fits in each unit or call 0800 321 3211 for personalised advice from our experts. We’ll help you find the most cost-effective storage space for your needs, no guesswork, no wasted space.

