Make the choice from your actual load, then verify the proposed room. A storage-unit size is an area label, not a promise about shape, access or capacity.
1. Count what is going into storage
Include boxes, furniture, white goods, bicycles, garden equipment and business stock. Exclude built-in furniture and belongings that will remain elsewhere. Avoid counting a mattress twice: our bed frames and mattresses are separate entries.
2. Measure the awkward items
Check sofas, wardrobes, large tables, mirrors and long equipment. Enter external protected dimensions in the custom-item tool. A shape with large empty voids still needs an envelope until it can be dismantled.
3. Decide what can come apart
Check that you can safely dismantle and reassemble the piece. Keep fittings labelled. Use a measured bundle including protection; do not reduce fragile or upholstered furniture just because a switch is available.
4. Choose how you need to use the room
Store-and-leave packing is different from retrieving stock every week. Ask about shelving rules and safe stack heights. A percentage allowance cannot guarantee a continuous aisle in every room shape.
5. Check the actual unit
- Internal width, depth, ceiling height and any pillars or sloping roof.
- Door opening and room to turn the longest item.
- Lifts, stairs, corridors and loading access.
- Facility rules for stacking, shelving and prohibited goods.
- Whether you can change size if the real load differs.
6. Keep a margin
Close results warrant a physical layout check and usually the next available size. Our model includes 8% safety space before access and future additions; this does not eliminate uncertainty.
Work out my size →