A 10x25 storage unit has 100 more square feet than a 10x15, about two-thirds more space, and holds a whole multi-bedroom house with appliances, while a 10x15 holds about three bedrooms of furniture. At AA Personal Storage in Parowan, Utah, a 10x15 (150 square feet) rents for $75 a month and a 10x25 (250 square feet) rents for $125 a month, as listed in November 2026.
The 10x15 and the 10x25 are the two most popular "whole move" sizes we rent in Parowan, and they're also the two sizes people most often ask us to compare. This guide puts them side by side with real dimensions, door sizes, and prices from our Rent page. It also answers the question we hear a lot: what about a 10x20? To see every unit we offer, check our full storage unit size guide.
The difference is 10 feet of depth: both units are 10 feet wide, but a 10x15 is 15 feet deep (150 square feet) and a 10x25 is 25 feet deep (250 square feet). The 10x25 gives you 100 extra square feet, which is about 67% more floor space.
Here is how the two compare at AA Personal Storage, using the specs on our Rent page in November 2026:
| Feature | 10x15 (9 ft ceiling) | 10x15 (10 ft ceiling) | 10x25 |
|---|---|---|---|
| Floor space | 150 sq ft | 150 sq ft | 250 sq ft |
| Ceiling height | 9 ft | 10 ft | 9 ft |
| Approximate volume | About 1,350 cu ft | About 1,500 cu ft | About 2,250 cu ft |
| Door type | Roll-up | Roll-up | Roll-up |
| Door width | 8.7 ft | 7 ft 10 in | 8.0 ft |
| Door height | 8.0 ft | 8.0 ft | 7 ft 10 in |
| Inside lighting | No | No | No |
| Monthly rate | $75 | $75 | $125 |
| Cost per sq ft | $0.50 | $0.50 | $0.50 |
| Fits (per our Rent page) | Three full bedrooms plus a piano, couches, tables, or large TVs | Same as the 9 ft version, with more stacking height | A multi-bedroom house, including a couch, refrigerator, washer and dryer, and dining set |
| Best for | A two- or three-bedroom apartment, a garage cleanout, home staging | Tall stacks of boxes and bins | A full house move, a home sale, a long remodel |
Volume figures are simple length x width x ceiling math, so treat them as approximate. Every unit at AA Personal Storage is drive-up and ground level, and the property is paved to every unit.
A 10x15 is about the size of a large bedroom, or a bit more than half of a typical one-car garage. A 10x25 is closer to a full one-car garage that's a little narrower than usual (both comparisons are approximate).
At AA Personal Storage in Parowan, Utah, a 10x25 costs $50 more per month than a 10x15: $125 versus $75 (as listed in November 2026). Both sizes work out to the same 50 cents per square foot, so you're paying for space, not a premium for the bigger unit.
| Rental length | 10x15 at $75/mo | 10x25 at $125/mo | Difference |
|---|---|---|---|
| 1 month | $75 | $125 | $50 |
| 3 months | $225 | $375 | $150 |
| 6 months | $450 | $750 | $300 |
| 12 months | $900 | $1,500 | $600 |
These totals use the monthly rates on our Rent page in November 2026 and don't include optional tenant protection or a lock. Rentals are month to month, so you only pay for the months you use.
The other costs are the same for both sizes:
We accept Visa, Mastercard, and Discover, and you can pay your bill online.
AA Personal Storage does not have a 10x20 unit. If you were searching for a 10x20 (200 square feet), your two closest options here are the 10x15 just below it and the 10x25 just above it. Here's how to translate size-calculator advice to our lineup:
| If a calculator says 10x20 and... | Choose at AA Personal Storage | Why |
|---|---|---|
| Your load is mostly furniture and boxes, no big appliances | 10x15 ($75/mo) | Packed tightly with the full ceiling height, many "10x20" loads fit in 150 sq ft |
| You have a refrigerator, washer, or dryer | 10x25 ($125/mo) | Appliances can't be stacked on, so they eat floor space fast |
| You want an aisle to reach things at the back | 10x25 ($125/mo) | The extra depth leaves room to walk |
| You're still adding to the pile (an ongoing move or remodel) | 10x25 ($125/mo) | Loads tend to grow over time |
Usually, yes. One 10x25 at $125 a month gives you 250 square feet behind a single door. Renting a 10x10 ($65) and a 10x15 ($75) to get the same 250 square feet would cost $140 a month, and you'd have two units to lock, load, and visit (rates as listed in November 2026). Two units only make sense if you need to keep two loads separate, such as household goods and business inventory.
A 10x15 fits about three bedrooms of furniture, including large items like a piano, couches, tables, or large-screen TVs. A 10x25 fits a multi-bedroom house, including the oversized pieces that fill up a 10x15 fast: a couch, a refrigerator, a washer and dryer, and a dining room set.
A 10x15 typically holds: two or three bedroom sets (beds, dressers, nightstands), a sofa or small sectional, a TV and stand, a dining table and chairs, one large appliance or a piano, and roughly 25 to 40 medium boxes. See the full list in our guide to what fits in a 10x15 storage unit.
A 10x25 typically holds: three bedroom sets, a sectional plus a recliner, a dining set, a refrigerator, a washer and dryer, a chest freezer, patio furniture, garage tools and bikes, and roughly 60 to 100 boxes. See the full list in our guide to what fits in a 10x25 storage unit.
Box and bedroom counts are estimates; how much you own matters more than the bedroom count.
Appliances and garage contents are the biggest reasons people move up to a 10x25. Here are the items that most often make the difference:
| Item or need | 10x15 | 10x25 |
|---|---|---|
| Refrigerator, washer, and dryer together | Takes a big share of the floor | Fits along with the furniture |
| A full garage (tools, bikes, mower, yard gear) on top of the house | Usually too much | Usually fits |
| Sectional sofa plus three bedroom sets | Tight | Fits with room to spare |
| Patio furniture and a grill | Often left behind | Fits near the door |
| A walkway to reach the back | Hard with a full load | Easy to leave one down a side wall |
| Long items like ladders, lumber, or kayaks | Fits if laid along a wall | More length to lay them flat |
Neither unit is for vehicles. Cars, trucks, boats, RVs, ATVs, and snowmobiles go in our uncovered outdoor parking instead, where a 10x30 space is $30 a month and a 12x40 space is $40 a month (November 2026). Our guide to RV parking sizes, 10x30 vs. 12x40 explains which space fits your rig.
Choose a 10x15 for a two- or three-bedroom apartment or a lightly furnished home, and a 10x25 for a full three-bedroom house with appliances, or a two-bedroom house plus its garage. Use this table as a starting point:
| What you're storing | Recommended size | Rate (November 2026) |
|---|---|---|
| A two-bedroom apartment, no appliances | 10x15 | $75/mo |
| A lightly furnished three-bedroom | 10x15 | $75/mo |
| A two-bedroom house with appliances | 10x15 or 10x25 | $75 or $125/mo |
| A two-bedroom house plus a full garage | 10x25 | $125/mo |
| A typical three-bedroom house with appliances | 10x25 | $125/mo |
| A large three-bedroom or a four-bedroom house | 14x20, 15x20, or 20x26 | $145 to $210/mo |
For a room-by-room walkthrough, see our guides to storage unit size for a 2-bedroom and storage unit size for a 3-bedroom. For smaller loads, compare the 10x10 vs. 10x15 storage unit instead.
If your load includes appliances or garage contents, size up to the 10x25. If it's mostly furniture and boxes from an apartment, a 10x15 at $75 a month is usually enough, and it saves you $50 a month at AA Personal Storage.
Before you rent, take a few minutes to estimate:
Since rentals are month to month, you're not locked into a size. If needs change, call us at (435) 447-4777 to ask about moving to a different unit. Availability changes often, especially on the 10x25, so check the Rent page for open units.
In either size, load the heaviest and least-used items against the back wall, stand mattresses and sofas on end, and stack boxes to the ceiling. The main difference is that a 10x25 is deep enough that you should plan a walkway, or the back half becomes hard to reach.
For more ideas, read how to pack your storage unit for easy use.
The same rules apply to every enclosed unit. Our storage FAQ lists items you can't store, including gasoline, propane, paint thinner, fireworks, and other hazardous materials; explosives and ammunition; perishable food and anything that attracts pests; people, animals, and plants; wet, moldy, or leaking items; and tires unless they're on a vehicle in outdoor parking. Vehicles aren't allowed in enclosed units at all.
AA Personal Storage in Parowan, Utah is a locally owned, drive-up facility at 450 N 600 W, just off I-15, open 24 hours a day, 7 days a week.
A 10x25 has 250 square feet of floor space and a 10x15 has 150, so the 10x25 is 100 square feet, or about 67%, bigger. Both are 10 feet wide, so the 10x25 is 10 feet deeper. At AA Personal Storage in Parowan, Utah, the 10x25 has a 9-foot ceiling, for about 2,250 cubic feet.
At AA Personal Storage in Parowan, Utah, a 10x15 costs $75 a month and a 10x25 costs $125 a month, as listed in November 2026. That's $50 more per month, or $600 more per year. Both work out to about 50 cents per square foot, and rentals are month to month.
No. AA Personal Storage in Parowan, Utah does not rent a 10x20. The closest sizes are the 10x15 at $75 a month and the 10x25 at $125 a month (November 2026). Choose the 10x15 for furniture and boxes, and the 10x25 if your load includes appliances, garage contents, or needs a walkway.
A lightly furnished three-bedroom can fit in a 10x15 if it's packed tightly, because our Rent page lists the 10x15 as holding three full bedrooms plus items like a piano or couches. A typical three-bedroom house with a refrigerator, washer, dryer, and garage gear usually needs a 10x25 instead.
Yes, they physically fit through the 10x15's roll-up door, which is 8.0 feet tall. But three appliances take a big share of the 150-square-foot floor, leaving less room for furniture. If you're storing appliances plus a full household, a 10x25 at AA Personal Storage in Parowan, Utah is usually the better fit.
Rentals at AA Personal Storage in Parowan, Utah are month to month, so there's no long-term contract keeping you in one size. If you need more or less room, call (435) 447-4777 to ask about moving to a different unit. Availability changes, so check the Rent page for open 10x15 and 10x25 units.
Know which size you need? Rent a 10x15 or 10x25 in Parowan online in a few minutes with no meeting, or reserve one with a $50 deposit that holds it for 25 days. Still deciding? Compare every unit size in our size guide.
Questions? Call AA Personal Storage at (435) 447-4777 or email hello@aapersonalstorage.com. We're at 450 N 600 W, Parowan, UT 84761, just off I-15, and open 24/7.
