How to Choose the Right Storage Unit Size

Not sure how much storage space you need? This practical guide explains how to estimate your storage requirements and choose a unit that fits your belongings without paying for unnecessary space

Choosing the right storage unit size can feel like guesswork. A unit that is too small creates frustration on moving day, while a unit that is too large means paying for space you do not use.

Here are a few practical ways to estimate what you need.

1. Make a list of everything you plan to store

Start by writing down the main items you want to place in storage. Include furniture, appliances, boxes, equipment, stock, documents and any unusually shaped items.

You do not need a perfect inventory. A rough list will already make it easier to estimate the required space.

2. Count your boxes

Boxes take up more room than most people expect. Estimate how many small, medium and large boxes you will have.

Using boxes of similar sizes also makes stacking easier and helps you use the available height inside the unit.

3. Measure your largest items

Measure bulky furniture such as sofas, tables, beds, cabinets and appliances.

Check whether furniture can be taken apart. Removing table legs or dismantling a bed frame can reduce the amount of floor space required.

4. Think about access

Consider how often you will need to remove items from the unit.

If you need regular access, leave a narrow walkway and place frequently used items near the entrance. If the unit is for long-term storage, you may be able to pack everything more closely.

5. Ask for a size recommendation

A storage provider can help you match your belongings to a suitable unit. Send a list, measurements or photographs of the items you plan to store.

This reduces the risk of booking the wrong size and can save time on moving day.

Common storage examples

A small unit may suit boxes, documents, seasonal items or the contents of a single room.

A medium unit may suit the contents of a small flat, including furniture and appliances.

A larger unit may be better for a household move, business stock, office furniture or bulky equipment.

Final tip

Choose a unit based on what you actually need to store, not only what you think may fit. A little planning before booking can prevent extra trips, damaged items and last-minute changes.

Stor24 can help you find a suitable storage option in Johannesburg. Complete the quote form and tell us what you need to store.