Building an indoor playground can cost anywhere from $30,000 for small setups to over $500,000 for large commercial projects. Costs depend on factors like space size, type of playground, equipment choices, safety compliance, and regional labor/material prices. Equipment typically accounts for 60–70% of the budget, followed by installation, shipping, and site preparation. Small playgrounds offer faster ROI, while large setups attract more visitors and higher revenue. Choosing the right equipment—soft play, modular, or specialty—affects both cost and customer satisfaction. Additional expenses include permits, maintenance, staffing, and marketing. Careful planning, supplier comparison, and phased installation can maximize profitability.