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    Our ADU Construction Services

    Three ADU types, one team, zero headaches. Every service includes design, permits, and construction — from start to finish.

    — Backyard Cottage

    Detached ADU (DADU)

    A fully independent structure built in your backyard. This is the most popular ADU type in the Puget Sound region — offering maximum privacy, the best rental income potential, and the highest property value increase. We've built over 25 DADUs across King and Pierce County.

    400–900 sq ft
    $185k–$320k
    6–8 month construction phase
    Custom or pre-approved plans

    — Transform Your Existing Garage

    Garage Conversion

    Convert your existing garage into a fully permitted, livable space. This is the fastest and most cost-effective path to ADU ownership. Because you're working with an existing structure, permit timelines are shorter and construction costs are significantly lower than new builds.

    400–650 sq ft
    $95k–$160k
    3–5 month construction phase
    Uses existing structure

    — Multi-Generational Living

    Attached / Basement ADU

    Add a self-contained living suite to your existing home. Whether it's a basement conversion, above-garage addition, or side-attached unit, this option leverages your existing foundation and structure for significant cost savings. Perfect for aging parents or supplementing your mortgage.

    300–700 sq ft
    $85k–$180k
    4–6 month construction phase
    Leverages existing foundation

    Typical full project timeline including design and permitting: 10–16 months.

    Free AI Feasibility Report

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    Need deeper analysis? Advanced Lot Report available by request.