40 × 64RV and boat storage barn
Tall storage for the fifth-wheel, the boat and the truck, behind two 14 ft doors, with a small bench and shelving for the season’s gear. Light stone walls, forest green roof and twin cupolas.A finished design you can open, change and price: 2,560 sq ft, 16′ eaves, a 4/12 roof. Every picture below is a path-traced render of this exact design file; outside, it stands in a real photographed yard.
Exterior · real yard- Footprint40′ × 64′
- Eave height16′
- Roof4/12 pitch
- Openings5
- FeatureTwo 14' doors
- Feature16' eaves
- FeatureTwin cupolas
- FeatureBench and shelving
Material list
| Frame | |
|---|---|
| Posts, 6×6 laminated | 546 ft of post |
| Trusses, 40 ft span, 4/12 | 360 ft of span |
| Purlins, 2×4 on edge | 1,717 lin ft |
| Wall girts, 2×4 flat | 1,872 lin ft |
| Splash board, treated 2×8 | 208 lin ft |
| Headers over wide openings, 2-ply 2×12 | 44 lin ft |
| Siding | |
| Walls · Ribbed steel, Light stone | 3,159 sq ft |
| Wainscot · Steel, contrasting colour, Forest green | 624 sq ft |
| Roof | |
| Roof steel · Forest green | 2,992 sq ft |
| Cupolas with weathervane | 2 each |
| Trim | |
| Ridge cap · Forest green | 67 lin ft |
| Eave and rake trim | 223 lin ft |
| Corner and base trim | 273 lin ft |
| Foundation | |
| Concrete slab, 4 in, 4,000 psi, fiber, power trowel | 2,560 sq ft |
| Thickened edge, 12 in deep | 208 lin ft |
| Post piers, 16 in × 48 in | 26 each |
| Site | |
| Apron, concrete | 503 sq ft |
| Drive, gravel | 945 sq ft |
| Openings | |
| Garage door · sectional, 14′ × 14′ | 392 sq ft of door |
| Door, 3′ × 6′ 8″ | 1 each |
| Casement window, 4′ × 3′ | 2 each |
Questions
How much does a 40 × 64 RV and boat storage barn cost?
This design comes to about $65,353, or $26 per square foot, at standard-quality Midwest prices, each one sourced (Home Depot, Midwest post-frame suppliers and 2026 cost guides) and checked on October 16, 2026: the frame, steel, doors and trim as materials, and the slab, thickened edge, post piers, apron and drive installed, the way concrete is quoted. Erection labour is optional, and utilities, equipment and furnishings are never priced. Open the design to choose a budget, standard or premium build, step any part up or down, set your region, and see where every price came from.
What materials does a 40 × 64 RV and boat storage barn need?
The full take-off is above: posts, trusses, purlins and girts, steel for the walls and roof, trim, the slab and every door and window, counted from the design with common post-frame rules.
Can I change the design?
Yes. Open it in the designer and change the size, the 40′ × 64′ footprint, the eave height, the steel colours, the doors and everything inside. The renders, the drawing set, the material list and the price follow every change.
Can I see it on my own land?
Yes. Make a share link and open it on your phone to place the building in your yard at true size, then walk around it.