The Ultimate Guide to RV Storage Building Dimensions
Expert advice from experienced RV owners on building the perfect storage structure for your current and future recreational vehicles
The Original Question
"We have a small, 24' trailer right now and want to build a cover to store it under when not using it. We anticipate buying a larger trailer or motor home in the future. I'd like to build a cover now that'll accommodate whatever we buy in the future but I'm not sure how tall I should build it."
This question resonated with many experienced RV owners, generating valuable insights from people who've faced similar decisions.
Building an RV storage structure is a significant investment, and getting the dimensions right from the start can save you thousands of dollars and years of regret. When planning for future RV purchases, it's essential to think bigger than your current needs.
After analyzing responses from 15+ experienced RV owners and industry contributors, clear patterns emerge in the recommended dimensions. Here's what the community consensus tells us about building the perfect RV storage structure.
Height: The Critical Dimension
Expert Recommendations Range from 14-20 Feet
Clears most RVs but tight for maintenance
Most recommended by experts
Maximum convenience and airflow
Why Height Matters Beyond RV Clearance:
- • Maintenance Access: Need room to stand on the roof for cleaning, repairs, and inspections
- • Air Circulation: Higher ceilings improve ventilation and reduce condensation
- • AC Units & Accessories: Rooftop equipment adds 12-18 inches to base RV height
- • Satellite Dishes: Deployed dishes can add significant height
- • Future Upgrades: You may add rooftop solar panels or other accessories
Expert Insight: The 16-Foot Rule
Multiple experienced RV owners recommended 16 feet as the optimal height. This provides clearance for the tallest production RVs (13'6" standard) plus essential maintenance access. As one expert noted: "16 ft minimum so you have room to get on the roof if you need to. It will also allow more air to circulate."
Length & Width: Room to Maneuver
Length Recommendations
Pro Tip: Add 10-15 feet to your RV length to allow walking space at both ends and easier maneuvering.
Width Considerations
Important: Modern RVs with opposing slides can extend 3-4 feet on each side, requiring significantly more width.
Smart Door Strategy
Several experts recommended installing doors on both ends of the building. Benefits include:
- • Eliminates challenging backing maneuvers
- • Provides drive-through capability
- • Easier for beginners and tight spaces
- • Better ventilation options
What the RV Community Says
Top Contributor Insights
"We just built a 30x50 with 16' walls. 14x14 door for the motorhome. We have a 33' class A. Always, if affordable, build bigger than you think you need."
— Gael Hunter Phillips, Rising Contributor
"I would build an interior ceiling of 16 ft minimum. That will hold most any production 5th wheel. And length, 50 ft so you can walk around both ends with doors down."
— William Lee, Rising Contributor
"Go as large as you can afford. You can always store other gear as well."
— David Mullinix, Rising Contributor
Most Mentioned Building Configurations
Versatile size for most RVs
Premium configuration
Multi-purpose storage
Tailored to specific needs
Building Requirements by RV Type
Fifth Wheel Trailers
Recommended Building Size:
45' L × 18' W × 16' H for opposing slide-outs and maintenance access
Class A Motorhomes
Recommended Building Size:
50' L × 20' W × 16' H for largest Class A units with multiple slides
Smart Building Features to Consider
Essential Features
- Dual Garage Doors: Drive-through capability eliminates backing challenges
- Concrete Flooring: Level surface prevents RV damage and improves drainage
- Ventilation: Ridge vents or exhaust fans prevent moisture buildup
- LED Lighting: Bright, energy-efficient lighting for maintenance tasks
Premium Upgrades
- RV Power Hookups: 30A/50A electrical service for battery maintenance
- Water Spigot: Convenient for washing and maintenance
- Storage Loft: Overhead storage for RV accessories and seasonal items
- Workshop Area: Dedicated space for repairs and maintenance
Balancing Cost vs. Future-Proofing
Investment Analysis: Build Once vs. Build Twice
Conservative Approach
Risk: May need costly modifications or complete rebuild for larger RV
Future-Proof Approach
Benefit: One-time investment accommodates any future RV purchase
Hidden Costs of Building Too Small:
- • Permit fees for modifications or second structure
- • Demolition costs if complete rebuild is needed
- • Temporary storage fees during construction
- • Lost time and inconvenience
- • Higher cost per square foot for smaller structures
Our Final Recommendations
The Sweet Spot Configuration
This configuration received the most support from experienced RV owners and provides the best balance of cost, functionality, and future-proofing.
Budget-Conscious Option
Minimum viable size for small to medium travel trailers. Good starting point if budget is tight.
Warning: May require expansion for larger RVs
Premium Option
Accommodates the largest Class A motorhomes and provides space for multiple vehicles or workshop area.
Benefit: Never need to upgrade, extra storage space
Decision Framework: Choose Your Path
Key Takeaways
"Always, if affordable, build bigger than you think you need."
— Wisdom from experienced RV owners