How to Choose the Right Storage Unit Size: A Complete Guide

Choosing the right unit size can save you money and prevent unnecessary stress when moving, downsizing, or decluttering. This guide covers the most common sizes available, what typically fits in each one, and which situations each size suits best, with specific context for people in Warrnambool, VIC, and the surrounding region.

Start With What You Are Storing

Before booking a unit, make a rough inventory of everything you plan to store. Write down large items first: beds, sofas, wardrobes, white goods, and tools. Smaller boxes and bags can usually fill gaps around bigger pieces, so the large items are what determine the minimum size you need. Once you have that list, matching it to a unit size becomes much simpler.

What Are the Most Common Storage Unit Sizes?

Unit sizes generally range from a small locker up to a large shed-style space. Here is a quick-reference guide to help you choose.

Small Units (Around 3 x 3 m or Under)

A small unit can hold the contents of a studio apartment or a single bedroom. Think a bed frame, a few boxes, and some loose items. This size is popular with Warrnambool students heading off to university who need somewhere to keep belongings over summer, or with residents clearing out a single room during a renovation.

Medium Units (Around 3 x 5 m)

A medium unit suits a one or two-bedroom home. You can typically fit a queen bed, a sofa, a dining table, boxes of personal belongings, and a few appliances. In Warrnambool, VIC, this size is a common choice for locals making a sea-change move along the coast who need short-term space while they settle into a new property.

Large Units (Around 6 x 3 m to 9 x 3.6 m)

A large unit can accommodate a full three-bedroom household, including bulky furniture, white goods, and boxes. This size also suits tradespeople who need dedicated space for tools, equipment, and materials that would otherwise clutter a ute or garage. Warrnambool's active trades sector means this category is in regular demand year-round.

Vehicle and Oversized Storage

Some units are large enough for a caravan, boat, or trailer. Given Warrnambool's coastal lifestyle, keeping a boat or jet ski between seasons is a genuine local need. This size may also suit hobby vehicles or equipment that simply cannot stay on a suburban block.

Three Quick Tips Before You Book

  • Measure your largest items before comparing unit dimensions.
  • Stack boxes and furniture vertically to use the full height of the unit.
  • If you are unsure between two sizes, the larger option often costs less than a second trip or a second unit.


Check the storage page for current unit dimensions and availability, or visit the FAQ page for answers to common questions about what can and cannot be stored.

Ready to Find the Right Size for Your Situation?

Gateway Business Park in Warrnambool offers units ranging from compact to large shed-sized spaces, all with drive-up access and 24-hour surveillance. The team at Storage @ Gateway can help you match your belongings to the right unit size at no obligation. Call for a free quote, or find the facility on Storage @ Gateway to plan your visit.