May 13, 2026

Class C Motorhome Storage: Size, Cost & What to Look For

Class C motorhomes occupy a sweet spot between van campers and full-sized Class A rigs — but that middle ground creates some storage headaches. They're too long for standard vehicle storage, too short to need the extra-wide lanes that Class A coaches require, and the distinctive cab-over sleeping area adds height that catches some facility owners off guard.

Here's exactly what Class C owners need to know before choosing a storage facility: the right dimensions to ask for, what to budget, and how to prep your rig before you drop off the keys.

How Big Is a Class C Motorhome?

Class C motorhomes are built on a van or truck chassis — Ford E-Series, Ram ProMaster, and Mercedes Sprinter are the most common. Standard dimensions:

• Length: 20 to 33 feet (most fall between 24–31 feet)
• Width: 96–102 inches (8–8.5 feet)
• Height: 11 to 13 feet, including rooftop AC units and antennas

The cab-over bunk adds 12–18 inches of height compared to a similar-length travel trailer. Always measure your actual rig — don't rely on the spec sheet, which may not include rooftop accessories.

What Storage Space Size Do You Need?

When booking a storage spot, add 3–5 feet to your rig's length for the tongue/hitch area (not applicable for motorhomes, but you'll still want maneuvering room) and ask about spot width. Typical recommendations:

Also confirm the facility's overhead clearance if you're considering covered or indoor storage. Many covered carports are rated at 12 feet — which may be tight for a 12'4" rig with a rooftop satellite dish.

Class C Storage Costs in 2026

Pricing varies by region and storage type. Class C rigs typically fall into the mid-tier pricing bracket — longer than most travel trailers but shorter than most Class A coaches.

• Outdoor/uncovered: $60–$130/month depending on length and region. Rural areas skew lower; coastal markets and major metro areas skew higher.
• Covered: $100–$200/month. Height restrictions mean fewer covered spots are compatible with Class C rigs, so availability may be limited.
• Indoor/enclosed: $150–$350/month. Confirm door height before booking — many indoor facilities have 12'6" or 13' clearances, which may work for your rig.

See the full breakdown of RV storage costs by state for regional pricing data, or compare the three storage types to decide which fits your budget.

Questions to Ask Before You Book

Class C owners should ask the following before signing a contract:

• What is the maximum height clearance? For covered or indoor storage, this is critical. Measure your rig including AC units and antennas.
• What is the spot width? Some facilities offer 10-foot-wide spots that are too narrow to open slide-outs or doors comfortably.
• Is the access road width sufficient? Class C motorhomes need at least a 20-foot-wide access road to turn comfortably.
• Is electrical hookup available? Shore power lets you keep your battery charged and your residential-style appliances running during storage. See our guide on RV storage with electrical hookups.
• Is there a dump station on site? Convenient for final tank dumps before a long storage period.

How to Prep Your Class C for Storage

Class C motorhomes share most prep steps with other motorhomes, but the cab-over area and built-in chassis create a few specific considerations.

Engine and Chassis

• Fill the fuel tank and add a fuel stabilizer — Class C engines use standard gasoline or diesel, and sitting fuel degrades quickly in heat
• Change the oil before storage, not after — used oil is acidic and can damage engine components over time
• Check coolant levels and freeze protection rating if storing in cold climates
• Inflate tires to the maximum cold inflation pressure listed on the sidewall to reduce flat-spotting risk

Cab-Over Sleeping Area

• The cab-over bunk is prone to condensation and moisture buildup — leave a small dehumidifier running if you have shore power
• Close all vents and windows, but leave interior doors open to promote airflow through the rig
• Check the cab-over window seals annually — this area is exposed on three sides and leaks can develop faster than on protected windows

Plumbing and Systems

• Drain and flush the fresh water system — if storing in a freeze-risk area, use RV antifreeze in traps and the water heater
• Dump and flush gray and black tanks, then add tank treatment to prevent odors
• Turn off the water heater — leaving it on with an empty tank is a quick way to burn out the heating element
• Disconnect the shore power cord and store it inside to prevent UV cracking

For a comprehensive step-by-step list, see our RV storage checklist and long-term storage guide.

Class C vs. Class A: Key Storage Differences

If you've previously owned a Class A motorhome, or are comparing your options, here are the key storage differences:

• Smaller footprint: Most Class C rigs are 5–15 feet shorter than comparable Class A coaches, which means more storage options and lower per-month costs.
• Similar height concerns: Both Class A and Class C motorhomes share height clearance issues at covered and indoor facilities.
• Gasoline vs. diesel engines: Many Class C motorhomes run gasoline engines (unlike most Class A coaches which are diesel). Fuel stabilizer is essential for both, but diesel fuel gels in cold temperatures — a concern for Class A owners that Class C owners may not share.

See our Class A motorhome storage guide for a full comparison if you're deciding between rigs.