Cottage ADU, 399 Square Feet, with a Porch at the Entry

399 sq ft · 1 bed · 1 bath · 1 story · 20' 0" wide × 22' 0" deep · Plans from $895

This compact ADU suits a backyard or a small retreat in the woods, with one bedroom and one full bath in 399 square feet. Its 10-by-4-foot entry porch adds a welcoming outdoor space to the 20-by-22-foot footprint.

• The 40-square-foot porch marks the entry and offers a place to sit outside. The home’s modest dimensions make it suited to a backyard or a setting in the woods.
• An L-shaped kitchen and the flex bedroom/living room share an open layout, arranged in an offset fashion to define the spaces without separating them.
• The single flex room can serve as a bedroom or living area, giving this one-bedroom plan flexibility within its compact footprint.
• The full bathroom has a 41-by-36-inch shower, with laundry tucked into a corner of the room. There is no garage.
• Foundation choices include a monolithic slab, slab, daylight, walkout, basement, or crawl space, so the plan can accommodate different site needs.

Exterior: Wood tones, Gable roof, Metal roof, Lap siding, Wood siding, Black windows