Dandy Duplex Playhouse Plan

Welcome to the Dandy Duplex Playhouse Plan, a twin cottage on two stories designed to keep siblings close but not too close. Each child gets their own cozy porch and interior space, one above, one below, with a spiral slide exit from the top level that turns every descent into a giggly grand finale. With a 7 by 12 footprint and 140 square feet total, it gives plenty of room to play and peek without taking up your entire yard.

This clever layout encourages both together time and private play. A vertical ship ladder connects the levels while the snug upper porch becomes a secret lookout, and the lower one serves as an inviting entrance. The design is clean, charming, and surprisingly easy to build with guided plans perfect for DIY families. It’s a delightful dual-dwelling playhouse that balances sibling independence and shared joy.

Features:

• Two story playhouse with a total of 168ft² in usable space
• 1st and 2nd story patios with overhanging roof
  
• 2nd level slide exit
• Interior vertical ladder to access 2nd level
  
• Gable Roof
• 5.5' Walls
• Designed for children aged 3-10
• 39 page, step by step PDF plan

Plan Category:

🏠 Classic Playhouse Plans

Dimensions:

• 7' Wide
• 12' Deep
• 15' Tall

Framing Details:

• Joists: 2x6 - 16" O.C.
• Walls: 2x4 - 16" O.C.
• Rafters: 2x6 - 16" O.C.

Glass Shed Windows:

• ( 4 ) 14" x 21"
  
• ( 3 ) 18" x 27"
• ( 2 ) 18" Octagonal

Roofing Details:

• 30° gable roof pitch
• 128 ft² of total roof coverage. Typically, 10% should be added to the roofing material order to account for waste and overlap.

Lumber List:

Make sure to take advantage of any volume discount from your local lumber yard!

Decking:
( 50 ) 5/4” x 6” x 8'

2x2:
( 29 ) 2” x 2” x 8'

2x4:
( 48 ) 2” x 4” x 8'
( 22 ) 2” x 4” x 10'
( 27 ) 2” x 4” x 12'
( 8 ) 2” x 4” x 16'

2x6:
( 5 ) 2” x 6” x 8'
( 13 ) 2” x 6” x 10'
( 4 ) 2” x 6” x 12'
( 2 ) 2” x 6” x 16'

2x8:
( 5 ) 2” x 8” x 8'
( 4 ) 2” x 8” x 10'
( 11 ) 2” x 8” x 12'
( 1 ) 2” x 8” x 16'

4x4:
( 4 ) 4” x 4” x 8'
( 2 ) 4” x 4” x 16'

Plywood:
( 12 ) ½” sheets Non-PT
( 6 ) ¾” sheets Non-PT