Self Storage Size Guide

The right size depends on what you're storing and how long you plan to store it. A small self storage unit (like a 5x5 or 5x10) works well for boxes, seasonal items, or a few pieces of furniture. If you're storing the contents of a full home or clearing out during a move, a large self storage unit (10x20 or bigger) gives you the breathing room to fit everything without the headache of playing Tetris. Our size guide walks you through what fits in each unit so you can choose with confidence.

In most cases, yes — a 5x10 or 10x10 self storage unit can comfortably hold the contents of a one-bedroom apartment, including furniture, boxes, and everyday essentials. That said, it helps to think through bulkier items like a couch, bed frame, or dresser before you book. When in doubt, sizing up a step is usually more budget-friendly than scrambling for a second unit later.

A large self storage unit is worth considering any time you're dealing with a major life transition — a move, a home renovation, a growing family, or a downsizing project. If you're clearing out multiple rooms, storing large furniture, or need to access your items regularly, the extra space pays for itself in convenience. A 10x20 or 10x30 self storage unit can hold the equivalent of a 3-4 bedroom home with room to spare.

It's more common than you'd think. Splitting a large self storage unit with a family member, roommate, or even a small business partner can be a practical, budget-friendly option — just make sure everyone's on the same page about access and organization upfront. Check with your self storage facility about their policies on shared access, as some require all users to be listed on the rental agreement.

A storage locker is typically the smallest option available — think of it as a large closet for documents, small boxes, or a handful of items. A small self storage unit, like a 5x5 or 5x10, gives you more floor space and vertical height, so you can actually stack and organize. If you're storing anything larger than boxes or bags, a small self storage unit will serve you much better than a locker.