How to Choose the Right Storage Unit Size

Last updated: 20 May, 2026

Choosing the right storage unit size can save you both money and stress. Too small, and you’ll struggle to fit everything in. Too large, and you could end up paying for space you don’t actually need.

Whether you’re moving house, decluttering, renovating, or storing business stock, understanding how much space you need is the key to making storage simple and cost-effective.

The good news? Our online storage calculator makes it easy to estimate the right amount of space before you book.

Start by Thinking About What You’re Storing

Before choosing a unit, make a quick list of the items you plan to store. Ask yourself:

  • Are you storing mainly boxes?

  • Do you have large furniture items?

  • Will you need regular access to your belongings?

  • Is this short-term or long-term storage?

A few stacked boxes require far less space than sofas, wardrobes, appliances, or office equipment. Planning ahead helps you avoid choosing a unit that’s either too small or unnecessarily large.

Common Storage Unit Sizes Explained

Small Storage Units - between 25sq ft - 35sq ft

Ideal for:

  • Boxes

  • Seasonal decorations

  • Sports equipment

  • Student storage

  • Small office items

A small unit is perfect if you simply need extra space at home without storing bulky furniture.

Medium Storage Units - between 35sq ft - 75sq ft

Ideal for:

  • Contents of a one-bedroom flat

  • Furniture

  • Bikes

  • Business stock

  • Home office equipment

These are often the most popular option because they provide flexibility without excessive unused space.

Large - Extra Large Storage Units - between 75sq ft - 175sq ft

Ideal for:

  • Full house moves

  • Large furniture sets

  • Long-term family storage

  • Business inventory

  • Renovation projects

If you’re storing the contents of multiple rooms or need regular access to your items, a larger unit can make organisation much easier.

Use Our Storage Calculator to Estimate Your Space

Not sure how much storage you need? Our storage calculator helps you estimate the right unit size based on the items you’re storing.

Simply select the furniture, boxes, or household items you plan to store, and the calculator will recommend a suitable storage option.

Using a storage calculator can help you:

  • Avoid paying for unused space

  • Prevent booking a unit that’s too small

  • Plan your move or decluttering project more efficiently

  • Save time when booking storage

Try the Moorspace Storage Calculator to estimate the ideal unit size for your needs.

Pack Smart to Maximise Space

The way you pack your storage unit can make a huge difference to how much space you need.

To make the most of your unit:

  • Use sturdy, stackable boxes

  • Disassemble furniture where possible

  • Store heavier items at the bottom

  • Make use of vertical space

  • Keep frequently used items near the front

Efficient packing can often reduce the amount of storage space required.

Think About Accessibility

Some customers pack their unit once and don’t return for months. Others need regular access to stock, tools, seasonal items, or household belongings.

If you expect to visit your unit frequently, it’s worth leaving walkways or choosing slightly more space for easier access and organisation.

Ask the Experts for Advice

If you’re still unsure which size unit is right for you, speaking with your storage provider can help.

At MoorSpace Storage, our team is always happy to help you choose the best storage solution - whether you’re storing a few boxes or an entire house move.

Final Thoughts

Choosing the right storage unit doesn’t have to be complicated. By planning ahead, packing efficiently, and using the right tools, you can find the perfect amount of space without overspending.

Still unsure what size you need?

Use our online storage calculator to estimate the right unit size, or contact MoorSpace Storage for expert advice from our team.

Register Your Interest

Sign up for alerts

Our units are in high demand. Be the first to hear about new availability by registering your interest with our team.

Supporting the local community

This is some copy that leads into the partnerships and work in the community

Eastart Holdings Ltd

George Street, Milnsbridge, Huddersfield, West Yorkshire, HD3 4JD

Copyright © Eastart Holdings Ltd 2026 • Registered in England and Wales with the company no. 11528787. VAT number GB310594329