12×20 Garden Shed Plans – DIY Storage Shed Blueprints with Materials List

Looking to build the perfect backyard shed? These 12×20 Traditional Shed Plans provide a complete step-by-step guide to constructing a durable, spacious, and classic garden shed. With the extended 20-ft length, this shed offers even more storage or workspace while maintaining a timeless backyard design.

Whether you’re storing tools, building a workshop, or adding value to your property, these plans are clear, practical, and beginner-friendly.

✅ What’s Included:

📋 Complete Materials List – organized by shed sections for easy purchasing.

📐 Foundation Plans – wood rail foundation instructions included.

🧱 Strong Floor System – 2×6 joists with ¾” floor sheathing for a solid and durable floor (50 PSF load).

🏗️ Wall Framing – 2×4 studs spaced 16″ on center with 8′-1″ wall height and double top plate.

🚪 Home-Built Doors – Double Door (6’x6’8″) for large equipment + Side Entry Door (3’x6’8″).

🪵 Exterior Siding – Designed with T1-11 siding, but vinyl, LP SmartSide, or other siding options can also be used.

🔨 Roof Structure – 2×4 roof framing with ½” OSB roof sheathing.

🏠 Roof Pitch – 10/12 steep roof pitch for a traditional shed appearance.

🛠️ Metal Roofing Design – Plans are compatible with durable metal roofing panels for long-lasting protection and low maintenance.

❄️ Roof Load – Engineered for 40 PSF snow load. Contact us for heavy snow region upgrades if needed.

⛏️ Trim Details – Uses 1×4 and 1×6 trim boards (wood or composite) for a clean finished look.

✨ Perfect For:

Storage • Garden Tools • Lawn Equipment • Workshop Space • Hobby Area • Backyard Organization

📥 Digital Download Only – No physical item will be shipped.

Build your dream backyard shed with confidence. These clear, detailed plans make your DIY project straightforward and rewarding.

Start building today!