Smart home retrofits in older homes cost 3x more than new construction installs, and neither electricians nor general contractors understand the requirements

Retrofitting smart home infrastructure into an existing home costs upwards of $10,000 for work that would have cost $3,000 if planned during construction. The cost difference comes from three sources: running new low-voltage wiring through finished walls requires cutting and patching drywall ($50-$100 per cable run), older homes have knob-and-tube or aluminum wiring that is incompatible with smart switches and requires panel upgrades ($2,000-$5,000), and there is no existing conduit or structured wiring closet to centralize networking equipment. This matters because the people who would benefit most from smart home technology — owners of older, less efficient homes — are the ones who face the highest barriers to adoption. A homeowner in a 1960s ranch house who wants smart lighting, a video doorbell, PoE security cameras, and a smart thermostat is looking at potentially $15,000+ in combined device and installation costs. This is not a premium they are paying for luxury — it is the tax for living in a house that was built before Ethernet existed. The alternative — wireless-only devices — brings its own problems (battery replacements, Wi-Fi congestion, reliability issues), pushing users toward a worse experience than new construction owners get. This problem persists because of a knowledge gap across the entire installation chain. General contractors do not think about smart home infrastructure during renovations — they focus on plumbing, electrical to code, and finishes. Electricians understand high-voltage wiring but not low-voltage networking, PoE camera requirements, or the difference between Zigbee and Z-Wave hub placement. Dedicated smart home installers exist but charge premium rates ($100-$200/hour) and are concentrated in wealthy metro areas. There is no standard certification or training program that bridges the gap between electrical work and smart home technology. The homeowner is left to be their own general contractor for technology integration, coordinating between an electrician who does not understand networking and an IT person who does not understand residential wiring.