Renting a storage unit feels like a small errand in the middle of a large move, which is exactly why it is usually done badly. The unit gets chosen on price and proximity in fifteen minutes, and then a household lives with that choice for months.
There are only a handful of decisions that actually matter, and every one of them can be settled with a site visit and a careful read of the agreement. This guide walks the selection itself; the strategic question of whether your move should route through storage at all belongs to the two-move strategy guide. It sits under the broader Claremont moving guide.
Size: the number people get wrong in both directions
Too small is the obvious failure. Too large is the quieter one: a household spreads to fill whatever it rents, stacks nothing, walks nowhere, and pays for air. Neither guess improves with confidence.
Measure instead. Count boxes and large items, note the pieces that cannot be stacked on or under anything, and then talk the list through with the facility rather than pointing at a floor plan. Bring the awkward items specifically: the sectional, the dining table, the treadmill, the mattress that is going to be stored on its side or not at all. The item that determines the unit is almost never the volume of boxes; it is one long or tall thing that dictates the footprint.
Climate control: what it protects and what it does not
Climate control is a real feature with a specific job. It protects things that are damaged by temperature swings and by humidity: wood furniture and instruments, upholstery, photographs and paper, electronics, candles, vinyl, anything glued.
It does not turn a unit into a house. It is not a fix for items packed damp, and it is not a substitute for keeping boxes off a concrete floor, which sweats regardless of what the air is doing. Decide by inventory, not by season: if the load is garage tools and plastic bins, standard is honest. If it is the contents of a living room going into a stint you cannot precisely date, the upgrade is doing something.
Access: the constraint that shows up on delivery day
Ask four questions on the site visit and write the answers down.
- What are the gate hours, and are they the same as office hours? A crew that arrives outside the access window is a crew that waits.
- Can a full-size truck reach the unit door? Drive-up beats corridor by a wide margin. If the answer is a corridor and an elevator, you are paying for a longer carry twice.
- How wide is the path, and is there a lift or a ramp? Measure it against the largest piece you are storing, not against a box.
- What happens to access if a payment is late? Facilities can restrict entry, and the moment you discover that should not be a delivery morning.
Match those answers against your crew's schedule before you book the labor. This is the same discipline as surveying the truck approach at both addresses, described in the parking and access guide.
Read the agreement, particularly the coverage clause
Storage agreements are short and they are not decorative. Three parts deserve a slow read.
THE COVERAGE REQUIREMENT. Many agreements require the tenant to carry insurance on the contents and offer a policy at the counter. Whether your existing homeowners or renters policy already covers goods in storage, and to what limit, is a question for your own insurer before you sign, not a guess at the desk.
THE PROHIBITED ITEMS LIST. Every facility has one, and it is broader than people expect. Flammables, fuels, pressurized cylinders, perishables, and anything living are the usual categories. This overlaps heavily with the list of things a moving crew will not carry either, covered in the guide to what movers will not take.
THE TERMINATION TERMS. How much notice you owe to leave, whether a partial month is refunded, and what triggers a rate change. These are the terms that decide whether a flexible plan is actually flexible.
Prepare the unit before the truck arrives
Twenty minutes of preparation converts a concrete box into usable storage. Lay down a base layer so nothing that matters sits directly on the slab. Plan the aisle before the first item goes in. Put the things you are most likely to need near the door, on purpose, and photograph the finished unit from the doorway.
That photograph is not sentimental. Months later it is how you remember what is in there and roughly where, and it is a useful record if anything is ever disputed. The same logic that makes a photo record of a household worth building applies here, and the method is in the photo inventory guide.
The short version
Choose the size by measuring the awkward items, not by eyeballing boxes. Choose climate control by inventory rather than by weather. Choose the location by whether a truck can reach the door and when the gate opens. Then read the agreement slowly, particularly the coverage clause, and confirm what your own policy already does before you buy a second one.
Anthony Grynchal has been licensed in California since November 2009. The storage decisions that go wrong are rarely dramatic. They are a gate that closes at six, a unit that a truck cannot reach, and a coverage assumption nobody checked. This is general information rather than advice on your specific agreement or policy.
Frequently asked questions
How do I work out what size storage unit I need?
Count boxes and large items, then identify the pieces that cannot be stacked on or under anything else. The unit size is usually dictated by one long or tall item rather than by the volume of boxes, so bring that list to the facility and talk it through instead of picking from a floor plan.
Do I need climate control for a household in storage?
Decide by inventory rather than by season. Climate control protects wood, upholstery, paper and photographs, electronics, instruments, and anything glued from temperature swings and humidity. If the load is garage tools and plastic bins, standard storage is honest. It is not a substitute for keeping boxes off a concrete floor either way.
Is my household covered by insurance while it is in storage?
Check before you sign rather than at the counter. Many storage agreements require the tenant to carry coverage on the contents and will offer a policy on the spot. Whether your existing homeowners or renters policy already covers goods in storage, and to what limit, is a question for your own insurer.
What should I ask about access before booking a delivery day?
Gate hours and whether they match office hours, whether a full-size truck can reach the unit door or has to use a corridor and elevator, the width of the path against your largest item, and what happens to access if a payment is late. Confirm all four against your crew's schedule before you book labor.

Written by
Anthony Grynchal
Anthony Grynchal is a California real estate professional with eXp Realty, licensed since November 2009 (California DRE# 01873626), and the Designated Local Expert™ for Claremont — where he has lived for more than 33 years.
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