Mercury 12x40 Gable Roof Shed Plan - Large Workshop, Studio, or Backyard Office with Porch | DIY Building Plans (PDF)
$45 — instant digital download (PDF + DWG plan set with material list).
What it costs to build
Based on the plan's full material list: estimated DIY material cost $10,738; typical contractor estimate $22,412 (materials + labor + overhead). See the live material cost calculator for the line-by-line breakdown.
Bring your biggest backyard dreams to life with the Mercury 12x40 Gable Roof Shed Plan - a spacious, elegant structure that blends classic form with modern function. Featuring a full gable roof, wide double-door entry, and a cozy covered porch, Mercury is perfect for homeowners looking to expand their outdoor living, storage, or creative workspace in style. This large-format plan delivers 480 sq. ft. of flexible interior space - ideal for a workshop, art studio, home office, or hobby barn - with detailed DIY instructions that make construction accessible for builders of all experience levels. 12x40 Gable Roof Shed with Covered Porch - A refined, extra-large layout for any backyard project Classic Meets Modern Design - Clean lines, balanced symmetry, and rich natural wood tones DIY-Friendly Construction - Easy-to-follow framing plans, layouts, and measurements Double Door Entry - Wide glass or barn-style doors for large equipment and open access Porch Feature - Adds outdoor charm and a functional transition space Versatile Use - Ideal for a home office, guest suite, creative studio, or organized storage Layout & Specs: Size: 12' x 40' (480 sq. ft.) Height: ~12 ft at roof peak Roof…
What's included
- Instant download
- PDF + DWG files
- Build plans
- Material list
Specs
| Size | 12x40 ft |
|---|---|
| Type | Shed Plan |
| Format | PDF + DWG |
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Cost planning: Sheds cost guide · Browse the full plan catalog.