A large urban planter box typically costs between $500 and $2,500 for the planter alone, with a common average of around $1,200 to $1,800 for a commercial-grade unit. If you need it delivered, filled with soil, planted, and installed in a streetscape or plaza, the installed cost usually rises to $1,500–$4,000 per box. For high-end custom concrete, weathering steel, or integrated irrigation, expect $3,000–$8,000 or more per planter.
Material is the biggest price driver. Basic plastic or resin planters may cost $150–$800. Wooden planters often run $300–$1,200. Fiberglass or composite planters usually fall between $600–$2,000. Powder-coated metal and Corten steel planters can range from $1,000–$4,000. Architectural precast concrete or cast stone planters often cost $1,000–$3,000, but custom sizes and finishes can push past $5,000.
Size, quantity, drainage, irrigation, and installation also matter. A 36-inch-wide planter is cheaper than a 60-inch custom unit, and small runs carry higher per-unit fabrication costs. Urban projects may also require engineered anchorage, liners, root barriers, drip irrigation, and permits. Shipping heavy planters can add hundreds to thousands of dollars.
For budgeting, use $1,000–$2,000 per large urban planter box for the unit and $2,000–$4,000 installed with soil and plants. Get at least three quotes that separate the planter, delivery, installation, soil, and planting costs. That makes it easier to compare bids and avoid surprises.