Compact and Efficient One-Story ADU – 400 Sq Ft Driftwood Design

Driftwood is a 400 sq ft ADU floor plan featuring 1 bedroom and 1 full bathroom in a thoughtfully designed single-story layout. This 1-bedroom ADU plan is ideal for homeowners seeking a functional, compact, and modern accessory dwelling unit for guest stays, rental income, or minimalist living.

If you’re comparing layouts at this size, explore more 400 sq ft floor plans to find the configuration that best fits your property and lifestyle needs.

Floor Plan Overview

• Total Living Space: 400 sq ft
• Dimensions: 12′ x 20′ (rectangular footprint)
• Stories: Single-story for convenient access and simple construction

The open-concept layout integrates the kitchen, dining area, and living space into a cohesive environment that maximizes every square foot. The bedroom is efficiently sized to provide comfort, privacy, and flexibility for rest or remote work—an approach reflected across our tiny home floor plans designed for compact, highly livable spaces.

Key Features of This 1-Bedroom ADU Plan

• One bedroom: practical and comfortable for daily use or guest accommodation.
• One full bathroom: designed for efficient use of space.
• Open living space: seamless connection of kitchen, dining, and living areas.
• Compact footprint: 400 sq ft of intelligently organized space.
• Ample natural light: wide windows enhance the airy, welcoming feel.

Why Choose the Driftwood ADU Plan?

This 400 sq ft single-story ADU demonstrates that small spaces can be functional, comfortable, and stylish. With a smart layout, bright interiors, and efficient room placement, Driftwood is a versatile solution for backyard housing, guest suites, or small rental units. Perfect for homeowners looking to maximize their property with thoughtfully designed ADU floor plans, all developed for comfort, efficiency, and real-world construction.