A 15x20 storage unit is 15 feet wide by 20 feet deep, or 300 square feet, about the size of a one-and-a-half-car garage. It holds the contents of a 3- to 4-bedroom home with appliances. At AA Personal Storage in Parowan, Utah, our 15x20 has a 10-foot ceiling, our widest enclosed-unit door, and rents for $155 a month.
If you are comparing big storage units in Parowan, Cedar City, Enoch, Paragonah, Summit, or Brian Head, the 15x20 is the unit people ask about when a 10x25 feels too narrow and a 20x26 feels like more than they need. This guide covers exactly how big a 15x20 is, what it looks like inside, what fits, what it costs, and how it compares to the sizes around it. For every size we rent, see our full storage unit size guide. All prices and specs below come from our live Rent page as of November 11, 2026.
A 15x20 storage unit has 300 square feet of floor space. At AA Personal Storage in Parowan, Utah, the ceiling is 10 feet, which works out to about 3,000 cubic feet of total space.
Here are the specs our Rent page lists for the 15x20:
| Spec | 15x20x10 at AA Personal Storage |
|---|---|
| Floor space | 300 sq ft |
| Ceiling height | 10 ft |
| Approximate volume | 3,000 cu ft |
| Door type | Roll-up |
| Door opening | 11 ft 5 in wide x 8 ft high (listed as 11.5 x 8.0 ft) |
| Inside lighting | No |
| Access | Drive-up, ground level, 24/7 |
| Monthly rate (Nov 2026) | $155 |
| Availability (Nov 11, 2026) | Only 1 left |
The volume figure is simple math (length times width times height). Real packed space is always a bit less, because you lose room to an aisle and to gaps between furniture.
A note on the door: our Rent page writes measurements in feet and inches separated by a dot, so "11.5 feet" means 11 feet 5 inches. Either way, it is the widest door on any of our enclosed units.
Picture a one-car garage, then add about half of a second stall. A standard one-car garage is often around 12x20, so a 15x20 is roughly 3 feet wider with the same depth. These garage comparisons are approximate, since garages vary.
Another way to picture it: a 15x20 is about the floor space of a large living room plus a dining area. It is wider than it is deep compared to most storage units, which matters more than people expect:
A 15x20 fits most or all of a 3- to 4-bedroom house, including large appliances. Our Rent page describes it as fitting "the contents of a multi-bedroom house, including several oversized items like a couch, a refrigerator, a washer/dryer and a dining room set or several large boxes."
Here is a realistic room-by-room list for a 15x20 packed carefully. Treat box counts as estimates; your actual count depends on how much furniture you store with them.
Vehicles cannot go in any enclosed unit at AA Personal Storage, including the 15x20. That means no cars, trucks, boats, motorcycles, ATVs, or snowmobiles inside the unit. Snowmobiles, ATVs, boats, RVs, and trailers are welcome in our uncovered outdoor parking instead. Our FAQ also lists prohibited items such as gasoline, propane, paint thinner, explosives, ammunition, and perishable food.
Yes for most 3-bedroom homes, and often yes for a 4-bedroom home that is not packed with garage items. If your 4-bedroom house has a full garage, a shop, or lots of oversized furniture, step up to the 20x26.
| Home | Typical fit in a 15x20 | Better choice if... |
|---|---|---|
| 2-bedroom apartment | Plenty of room with space to walk around | A 10x15 ($75) is usually enough |
| 3-bedroom house | Comfortable fit, including appliances | A 10x25 ($125) or 14x20 ($145) if you have little garage gear |
| 4-bedroom house, light furniture | Usually fits if packed tightly to the ceiling | Keep it if you want one unit |
| 4-bedroom house, full garage | Likely too tight | 20x26 ($210, 520 sq ft) |
For room-by-room checklists, see storage unit size for a 3-bedroom and storage unit size for a 4-bedroom.
A 15x20 gives you 20 more square feet than a 14x20 and 50 more than a 10x25, for $10 and $30 more per month. Its biggest advantage is the door: at 11 ft 5 in wide, it is far wider than the 14x20 door (7 ft 11 in) or the 10x25 door (8 ft).
| Feature | 10x25 | 14x20 | 15x20 | 20x26 |
|---|---|---|---|---|
| Floor space | 250 sq ft | 280 sq ft | 300 sq ft | 520 sq ft |
| Ceiling | 9 ft | 10 or 11.5 ft | 10 ft | 12 ft |
| Door opening (W x H) | 8 ft x 7 ft 10 in | 7 ft 11 in x 8 ft | 11 ft 5 in x 8 ft | 9 ft 11 in x 8 ft |
| Monthly rate (Nov 2026) | $125 | $145 | $155 | $210 |
| Cost per sq ft per month | about $0.50 | about $0.52 | about $0.52 | about $0.40 |
| Best for | One long row, a lighter 3-bedroom | A full 3-bedroom, tall stacks | Wide furniture, fast loading, a 3- to 4-bedroom | A full 4-bedroom with garage |
Cost per square foot is simple division of the monthly rate by the floor space. Door widths follow the Rent page's feet.inches format.
A 15x20 at AA Personal Storage in Parowan, Utah is $155 a month as listed on our Rent page in November 2026, rented month-to-month with no long-term contract. That is about $0.52 per square foot per month.
What else to know about the cost:
How does that compare to Cedar City? Our Parowan vs. Cedar City storage cost guide walks through prices in both towns.
Most 15x20 renters are in the middle of a big move or a big project. Common reasons we see the size fit well:
Pack a 15x20 in a U shape: heavy furniture and boxes along the back and both side walls, with a center aisle about 3 feet wide running from the door to the back.
Our packing guide has more tips. Since our units are not climate controlled, use sealed plastic bins for clothing, documents, and anything sensitive to cold or dust.
Renting is fast and done online. AA Personal Storage in Parowan, Utah is at 450 N 600 W, just off I-15, with drive-up, ground-level units and asphalt to every unit.
A 15x20 storage unit is 15 feet wide by 20 feet deep, or 300 square feet. At AA Personal Storage in Parowan, Utah, it has a 10-foot ceiling, about 3,000 cubic feet of space, and a roll-up door 11 feet 5 inches wide by 8 feet high. It is about the size of a one-and-a-half-car garage.
A 15x20 fits most 3-bedroom homes and many 4-bedroom homes, including a refrigerator, washer and dryer, sofa, dining set, beds, dressers, and roughly 80 to 120 medium boxes. Its wide door at AA Personal Storage in Parowan, Utah makes it a good fit for sectionals, workbenches, and other wide pieces.
A 15x20 storage unit at AA Personal Storage in Parowan, Utah is $155 per month as listed on our Rent page in November 2026. Rentals are month-to-month with no long-term contract. A $50 reservation fee holds the unit for 25 days and is credited to your move-in charges.
Yes. A 15x20 has 300 square feet, compared to 280 for a 14x20 and 250 for a 10x25. At AA Personal Storage in Parowan, Utah, the 15x20 also has the widest enclosed-unit door at 11 feet 5 inches, and it costs $155 a month versus $145 and $125.
No. AA Personal Storage in Parowan, Utah does not allow vehicles in any enclosed unit, including the 15x20. Cars, boats, RVs, trailers, ATVs, and snowmobiles go in our uncovered outdoor parking, with 10x30 spaces listed at $30 a month and 12x40 spaces at $40 a month.
No. The 15x20 at AA Personal Storage in Parowan, Utah is a drive-up unit and is not climate controlled. Store clothing, papers, and electronics in sealed plastic bins, keep items off the floor on pallets, and avoid anything that can freeze, spoil, or leak. Access is 24/7 with video surveillance.
Our 15x20 is down to its last open unit as of November 11, 2026. Rent a 15x20 in Parowan online in a few minutes, or call us at (435) 447-4777 to ask about the current offer, switching sizes, or our 10% military discount. You can also email hello@aapersonalstorage.com. Still deciding? Compare every unit size in our size guide.
