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What is Maxi Storage? A Guide to XL Storage Units

A maxi storage unit (named because it’s the opposite of a mini storage unit) can fit multiple rooms’ worth of belongings, business and commercial equipment, or even an RV if the unit is zoned for vehicle storage.
Peter Lalush

Peter Lalush

Updated: September 10, 2025

Article takeaways
  • Maxi storage units are extra-large storage spaces (10′ x 40′ or bigger) designed for storing the contents of 5-7 bedroom homes, business inventory and equipment, or large vehicles like RVs – but vehicle storage requires specially zoned units.
  • A standard 10×40 XL or maxi storage unit averages $115.75 per month, with pricing varying based on location and selected amenities. Prices increase as unit sizes go up.
  • Unlike warehouses, maxi storage units offer individual secure storage with easier access to climate-controlled options, and you can find and compare maxi storage facilities near you using online search tools to match your specific budget and feature requirements.

As living spaces get smaller and smaller, renters and homeowners have less and less room for all their stuff. A smaller storage unit is enough to store a little clutter, but if you have rooms and rooms full of stuff, or if you need to store a lot of larger and more complicated items, maxi storage units are perfect for your needs.

A maxi storage unit (named because it’s the opposite of a mini storage unit) can fit multiple rooms’ worth of belongings, business and commercial equipment, or even an RV if the unit is zoned for vehicle storage. In this article, we’ll explain maxi storage and some situations where you should consider renting the largest unit you can find.

What is maxi storage?

inside a maxi storage unit with shelves and boxes

Maxi storage units are some of the largest units available to storage facility customers, at around 10’ x 40’ in size or larger, depending on the facility. These units can store the entire contents of a five-to-seven-bedroom home if packed properly, but are primarily used by businesses looking to store inventory and equipment, as well as owners of large vehicles such as RVs. (Make sure you get a vehicle storage unit if you’re storing a vehicle, as they need to be properly zoned!)

Maxi storage units are different from warehouse storage; while a warehouse is an entire building dedicated to storing goods for a single business or group of businesses, a maxi storage unit is a bit smaller and more isolated. These units are usually more secure than warehouses, and it’s usually easier to find one that has climate control, enabling you to protect any equipment or vehicles you may have inside.

If a maxi storage unit is right for you, make sure the facilities you’re looking into offer the sizes you’re looking for. Compare the prices of available units to find one that meets your budget, and research what amenities different facilities offer. For example, if your belongings are fragile or vulnerable to temperature and humidity changes, you should consider renting a unit with climate control.

How does maxi storage differ from other storage unit sizes?

Maxi storage, as the name implies, is much larger than mini and standard storage unit sizes. Mini storage units are typically 5’ x 5’ or 5’ x 10’ or smaller, and can store a closet or a single room’s worth of belongings. Standard storage units are usually 10’ x 10’ to 10’ x 30’, storing the contents of an apartment or small house. If you need to store more than this, consider a maxi storage unit!

How much does a maxi for extra extra-large storage unit cost? 

Maxi storage units start at 10×40 and up, and are often used as RV storage units. Due to their versatility for vehicle and business storage, maxi storage units come in a wide range of non-traditional unit sizes, which are priced differently based on location, total square footage, and extra amenities like climate control. 

Storage.com has aggregated average monthly storage unit prices for maxi storage and extra-large storage units.

Note: Not all states offer specific storage unit dimensions, so some pricing data may not be available.

State 10×40 11×30 12×25 12×30 12×35 12×40 12×50
AL $73.24 $36.00 $78.76 $78.22 $77.75 $61.05 $232.29
AR $73.29 $150.00 $72.68 $152.15 $86.38
AZ $117.31 $95.92 $96.67 $117.93 $116.54 $123.89 $149.57
CA $180.93 $98.46 $122.59 $191.19 $159.95 $147.49 $240.21
CO $125.35 $61.16 $59.50 $121.56 $88.26 $112.00 $93.67
CT $103.13 $115.50 $134.60
DE $177.67 $108.75 $113.00 $151.00
FL $151.51 $130.33 $163.56 $154.69 $151.78 $154.36 $221.83
GA $96.51 $89.00 $74.72 $93.31 $104.09 $102.07 $149.29
HI $160.75
IA $42.50 $51.67 $89.38 $70.73 $112.80
ID $147.18 $169.25 $155.98 $157.47 $95.84 $155.00
IL $96.85 $116.00 $151.58 $120.00 $113.00 $90.57
IN $85.64 $102.00 $72.33 $105.16 $87.75 $93.05 $211.00
KS $178.56 $39.00 $78.00 $39.00 $158.86 $69.00
KY $80.16 $71.00 $99.00 $76.20 $98.47 $86.67
LA $85.73 $55.00 $102.75 $79.80 $70.57 $165.00
MA $191.94 $86.40 $157.50 $189.71 $128.50 $202.00
MD $130.37 $115.00 $329.83 $96.06 $121.14 $154.57 $203.27
ME $108.00 $70.00
MI $71.34 $83.00 $141.13 $88.91 $85.76 $83.45
MN $96.74 $121.00 $96.61 $140.10 $116.71 $165.67 $299.00
MS $85.17 $99.00 $31.21 $75.00 $115.25
MO $75.09 $99.00 $105.24 $65.94 $93.74
MT $58.44 $62.42 $134.18 $68.67 $45.00
NC $92.44 $109.00 $56.15 $100.30 $76.13 $122.53 $222.80
ND $240.00 $200.00
NE $110.36 $80.50 $132.84 $203.25 $48.90 $202.61
NH $123.00 $122.00 $236.20
NJ $146.97 $103.00 $50.00 $78.73 $121.71
NM $96.36 $42.35 $55.40 $106.50 $53.33 $45.42
NV $117.82 $59.33 $112.00 $146.40 $97.56 $149.80 $140.00
NY $123.47 $121.00 $144.00 $90.50 $222.46
OH $87.08 $128.88 $51.34 $93.15 $88.98 $73.62 $69.60
OK $87.75 $78.00 $93.00 $113.13 $80.00 $134.28 $159.60
OR $150.08 $73.00 $342.50 $216.29 $159.88 $130.00
PA $119.12 $79.00 $112.45 $135.00 $100.17 $101.00
RI $124.93
SC $105.99 $107.18 $94.33 $71.07 $124.16 $91.55 $114.13
SD $79.11 $49.00 $91.11 $92.08
TN $88.58 $70.40 $65.90 $103.49 $106.44 $105.51 $110.21
TX $98.06 $126.27 $101.27 $105.80 $100.38 $100.93 $108.58
UT $134.27 $97.00 $222.00 $100.00 $313.33 $137.45 $80.00
VA $108.75 $251.23 $127.90 $112.88 $83.33
VT
WA $231.78 $113.00 $95.08 $284.83 $178.75 $176.93 $130.00
WI $88.04 $200.00 $111.88 $82.39 $87.50
WV $93.18 $65.00 $85.00
WY $64.67 $68.75

Source: Storage.com storage unit reservation data

Can I store a vehicle in a maxi storage unit?

Storing an RV, a truck trailer, or a boat in a storage unit requires a facility with units zoned for vehicle storage, and the facility needs to be structured properly so you can drive said vehicle into and out of the unit. That being said, if a unit meets all these requirements, you can easily store a vehicle in a maxi storage unit for maximum protection. If you’d like to save money and your RV, truck, or boat doesn’t need as much coverage, however, consider parking it in an outdoor storage lot.

Can I store business and commercial equipment in a maxi storage unit?

Half-opened maxi storage unit with boxes and trolleys

You can easily store unused business equipment inside a maxi storage unit, whether you need to clear out space or you’re moving from one location to another. For example, restaurant owners can store unused appliances and equipment in a maxi unit, and construction professionals can store any materials and equipment that they can fit. However, remember you can’t use this equipment while it’s in storage, as this is often against the rules of the facility.

Maxi storage units are also ideal for storing overflow business inventory that you don’t have room for in your place of business. Fill your unit with clothing items or other non-perishable things you may need to restock your business’s stock room with.

How do I find maxi storage units near me?

If a maxi storage unit is right for your needs, the next step is finding one in your area that fits your budget. Luckily, Storage.com has plenty of tools to help you compare prices and get the best deal on a maxi unit with the features you want. Use our search tool to find the closest facilities to you, or call (844) 433-9733 to speak to a storage expert and get personalized assistance.

FAQs

Use Storage.com’s built-in search tool to find facilities near you and sort them by the kinds of units they offer. You can compare prices directly from the search page, so you’re sure to find a unit that fits your budget.
Depending on size, location, and amenities, maxi storage units can cost anywhere from <$100 to $200 per month. If you don’t need all that extra space, consider a slightly smaller unit to save a little money.
Maxi storage units are usually 10’ x 40’ or larger. 10’ x 40’ is usually more than enough space, but 15’ x 45’ units are available if you need the largest possible unit.
Yes! However, you’ll find climate-controlled units are usually more expensive than units without it. If you need to protect your belongings from the elements, you’ll find it worth the investment.
It depends on your needs. If you need to store a lot of large things in one place for a long time, maxi storage is a perfect solution. However, if you plan on rotating out your goods every once in a while, standard storage should more than suffice.
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Peter Lalush

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