Lisa had a vision: every light in her Capitol Heights home controllable from her phone. She'd already bought a box full of Lutron Caseta smart switches. She called me because she'd tried to install one herself and discovered the problem almost immediately.
The Neutral Wire Problem
Most smart switches — including Lutron Caseta, Leviton Decora Smart, and TP-Link Kasa — require a neutral wire to function. Older homes, including most of the Capitol Heights and PG County housing stock from the 1970s and 1980s, were wired without neutral wires at the switch boxes. The hot wire goes to the switch; the neutral went directly to the fixture.
“Installed 4 new ceiling fans and updated all our light switches to smart switches. Done in one day. Outstanding work.” — Lisa H., Capitol Heights MD
The Solution
For Lisa's home, I used a combination of approaches. Where the attic was accessible, I ran new wiring to bring neutrals to the switch boxes. Where it wasn't accessible, I used smart switches with a no-neutral option, or I installed smart bulbs instead of switches. The result: 100% of her lights are now smart-controlled, and nothing required cutting open finished walls.
The Full Day's Work
We finished 14 switches and 4 ceiling fan controllers in a single day. By the end, Lisa could turn every light in her house on and off from her phone, set schedules, and control them by room with voice commands. The total job took careful planning — I mapped every circuit in the house before buying a single component — but it was worth it.
Thinking About Smart Home in PG County?
Don't start buying switches before calling an electrician. The neutral wire issue affects a large percentage of older PG County and DC Metro homes, and the wrong switch in the wrong box will cause flickering, buzzing, or simply won't work at all. I'll assess your wiring before you spend a dollar on hardware.