We’re proud to introduce our Architect Collaborative DADU Program, developed in partnership with leading Seattle and Eastside architects to address the unique zoning, permitting, and neighborhood considerations of our region.

This curated collection of predesigned Detached Accessory Dwelling Unit plans blends thoughtful architectural design with Alair’s proven construction expertise. The result is a more streamlined and predictable path to building a high quality DADU, without sacrificing design integrity.

Each plan is fully compliant with local codes and intentionally designed to allow customization. Homeowners can tailor layouts, finishes, and features to suit their property, lifestyle, and long term goals. Whether you are planning for rental income, multigenerational living, guest accommodations, or flexible living space, this collaborative approach brings clarity and confidence from concept through construction.

Two Story Farmhouse

This Modern Farmhouse DADU is a fully detached, two bedroom accessory dwelling unit designed for long term living, flexibility, and lasting value. Blending classic farmhouse character with clean, modern architecture, it functions as a complete second home rather than an add on or conversion.

Designed within a compact footprint for site flexibility, the two story layout lives comfortably and efficiently while maintaining the feel of a true residence. The main level features an open kitchen, dining, and living area filled with natural light, supported by integrated storage and a dedicated laundry and pantry space. Upstairs, the plan offers a private primary retreat, a generous second bedroom suitable for guests or office use, and a full spa inspired bathroom. Vaulted ceilings enhance volume and comfort throughout.

Natural materials, layered textures, oversized windows, and a welcoming porch presence allow the home to complement established Seattle and Eastside neighborhoods. As a fully independent DADU, it includes its own entry, utilities, and dedicated outdoor space, supporting lifestyle flexibility and long term property value.

Modern farmhouse DADU floor plans showing main level living spaces and upper level bedrooms

The floor plans illustrate a clear separation between public and private spaces, efficient circulation, and flexibility for long term living. Every square foot is intentionally designed to support comfort, daily use, and adaptability over time.

One Bedroom DADU

Main level floor plan showing one car garage and flexible living space in a detached accessory dwelling unit

This one bedroom DADU is thoughtfully designed to offer flexibility, comfort, and independence within a compact footprint. With a private living space above and a functional garage and flex area below, it adapts easily to changing needs over time.

The upper level features a light filled living area, full kitchen, dining space, private bedroom, and bathroom. This level functions as a complete residence, ideal for a remote office setup, visiting family, or an independent living space for a loved one. Large windows and an efficient layout create a sense of openness while maintaining privacy.

On the lower level, a one car garage is paired with a versatile flex living space that can serve as a second bedroom, home gym, studio, or dedicated workspace. A covered deck extends the living experience outdoors, creating a comfortable connection between indoor and outdoor spaces that can be enjoyed year round.

Designed to support family life, work from home, and long term adaptability, this DADU offers a smart balance of function and flexibility without unnecessary complexity.

One bedroom DADU floor plans showing garage level and upper living level layout

The floor plans illustrate a clear separation between living and utility spaces, allowing the home to function efficiently while remaining flexible. The layout supports multiple uses over time, making it well suited for evolving household needs.