Man sits at desk working in office with plywood interior, red metal-framed armchair with cream cushions, round flat green wall light sconce, and high clerestory polycarbonate windows in work shed by Linework Architecture in backyard of home in Seattle, Washington.

Budget Breakdown: A Seattle Couple Build Twin Backyard Offices for $51K—No Permit Required

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Using off-the-shelf materials, including standard plywood and polycarbonate panels, helped streamline construction, even if it posed design challenges. “There were a lot of complexities that made it interesting,” says architect Tony Salas. “It was a big ask for a tiny project.”