Generally, homeowners can expect to pay anywhere from $100 to $500 for a basic junction box installation by a licensed electrician. More complex jobs, such as installing a junction box in a difficult-to-access location or one that requires extensive wiring, could cost $500 to. Junction box costs range from low‑price indoor models ($10‑$60) to weatherproof units ($70‑$450), with installation averaging $100‑$300 depending on location and materials. Plastic junction boxes for indoor wiring cost 50% to 80% less than metal boxes but aren't as durable. Smart panel upgrades (Span, Lumin) add $3,000-5,000 but enable solar-ready homes. For larger electrical jobs like installing wiring or replacing an electrical panel, expect to pay $2,000 to $6,000. They are commonly made of aluminum, stainless steel, or heavy-duty cast metals.
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