• 20' x 20' Lean Cottage – exterior view, lean-to cottage architectural plans PDF
  • 20' x 20' Lean Cottage – floor plan, lean-to cottage architectural plans download
  • 20' x 20' Lean Cottage – elevation views, lean-to cottage architectural plans
  • 20' x 20' Lean Cottage – foundation plan, lean-to cottage architectural plans PDF
  • 20' x 20' Lean Cottage – roof framing plan, lean-to cottage architectural plans
  • 20' x 20' Lean Cottage – construction details, lean-to cottage architectural plans
  • 20' x 20' Lean Cottage – electrical plan, lean-to cottage architectural plans PDF
  • 20' x 20' Lean Cottage – materials list, lean-to cottage building plans
  • 20' x 20' Lean Cottage – plumbing plan, lean-to cottage architectural plans
  • 20' x 20' Lean Cottage – wall framing, permit-ready lean-to cottage plans
  • 20' x 20' Lean Cottage – door window schedule, lean-to cottage architectural plans
  • 20' x 20' Lean Cottage – floor sections, lean-to cottage architectural plans
  • Lean Cottage – permit-ready architectural plans PDF instant download
  • 20' x 20' Lean Cottage – complete plans set, lean-to cottage architectural plans
  • 20' x 20' Lean Cottage – permit-ready lean-to cottage architectural plans PDF
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Build Blueprint

20' x 20' Lean Cottage Architectural Plans

20' x 20' Lean Cottage Architectural Plans

$125.00 USD
$125.00 USD
Sale Sold out

20' x 20' Lean Cottage Architectural Plans

The 20' x 20' Lean Cottage is the smallest in our Lean Cottage series — a 400 square foot, one-bedroom design with a loft that proves good architecture doesn't require a large footprint. The signature shed roofline (a single sloping plane) gives this cottage a contemporary, clean look that stands out from conventional gable-roof cabins.

The lean roof design is structurally efficient, sheds water and snow effectively, and creates an asymmetric interior with varying ceiling heights that adds character to a compact space. Multiple foundation options — concrete piers, slab, or crawlspace — make this adaptable to a wide range of site conditions.

Plan Specifications

  • Footprint: 20' W x 20' L
  • Height: 15'-10"
  • Floor Area: 400 SF + loft
  • Bedrooms: 1 + loft
  • Bathrooms: 1
  • Foundation: Concrete piers, slab, or crawlspace
  • Roof Load: 95 PSF
  • Ceiling Height: 8'-0" to 13'-0"
  • Est. Materials Cost: From $30,000

What's Included

Complete permit-ready plan set including: floor plan, loft plan, foundation plan, roof framing plan, all four exterior elevations, wall sections, structural details, window and door schedule, and a full materials list. Ready for permit submission in most US jurisdictions.

Available Plan Options

  • Complete PDF Plan — Full plan set as a print-ready PDF. Instant download.
  • PDF + CAD Files — Includes editable DWG CAD files compatible with AutoCAD, Illustrator, and TurboCAD.

Who This Plan Is For

Perfect for buyers who want a modern-looking tiny cabin without the complexity of an A-frame build. The lean roofline is simpler to frame than a peak roof and gives the finished structure a distinctive, contemporary silhouette. Ideal for backyard studios, off-grid retreats, guest cottages, and small vacation properties.

Instant Download

Your complete plan set downloads immediately after purchase.

Instant Digital Download

You will receive the download link to the full plan immediately after your purchase. Link never expires so you will always have access to download if needed.

Drawing Scale

All of our plans are drawn to standard scale (i.e. 1/4" = 1") as per most building and permit requirements.

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Complete Plan Set

All plans include: materials list, floor plan, elevations, sections, foundation and roofing plan, electrical plan, plumbing fixture locations, construction details, door and window schedule, and more.