The time it takes to assemble a shed depends on its size and complexity. A small garden shed might take just a few hours. Larger units or multi-room designs could take a day or more. Affordable shed assembly services vary in cost, but most pricing is based on size and labor hours. Be sure to get an upfront quote. Some contractors charge flat fees, while others bill hourly. Ask about potential extra charges, especially if the shed requires custom adjustments or specialty tools.