Smart Home Wiring 101:
What New Construction Needs Before Drywall Goes Up
There's a narrow window during new-home construction — after framing, before drywall — when adding infrastructure is cheap and easy. Once drywall goes up, that same work can mean cutting into finished walls, patching, repainting, and paying a premium for an electrician's time. If you're building a home, renovating down to the studs, or specifying a plan set for a development, this is the checklist worth having in hand before that window closes.
ELECTRICAL: Start With the Panel
❋ What to plan for:
Reserve at least two open breaker spaces, even if you don't need them yet.
Add a dedicated 240V circuit (or at minimum, a conduit stub) to the garage for EV charging.
If a home battery is even a future possibility, stub conduit from the panel to the likely installation location now — it's a trivial cost during framing and a genuinely disruptive one after.
Consider a monitored or "smart" panel if whole-home energy visibility matters to the buyer — these report circuit-level usage through an app.
Low-Voltage: The Network Backbone
This is the piece that gets skipped most often, because it's invisible until someone tries to stream video in the back bedroom and the Wi-Fi can't keep up.
A structured wiring enclosure (a recessed panel, typically 14"x14") in a central, accessible location
1
Cat6 or Cat6A home runs to key rooms — living areas, primary bedroom, a home office, and the garage, at minimum
2
At least one ceiling-mounted, PoE-capable Ethernet drop near the center of the home for a Wi-Fi access point — mesh Wi-Fi handles a lot, but a wired backhaul outperforms any wireless mesh
3
Conduit from the demarc point (where internet service enters the home) to the structured panel, so a fiber upgrade later doesn't mean fishing new cable through finished walls
4
For larger or higher-tier homes, that baseline often expands to 8+ Cat6A runs, a PoE switch for cameras and access points, and a dedicated, ventilated closet if the home will host any local compute equipment (an increasingly common ask as AI processing moves closer to the home rather than staying purely in the cloud).
HVAC and Plumbing: Wiring for Sensors You Don't Have Yet
Smart climate control and leak detection both depend on low-voltage wiring that's far easier to run during framing than after.
Run thermostat cable with a dedicated C-wire (the conductor that powers smart thermostats) to every HVAC zone, even in a single-zone home — it's inexpensive now and essentially mandatory for any smart thermostat later
If the home will have zoned HVAC, pre-wire for the zone damper controller, not just the thermostat
Run low-voltage home runs to the water heater, kitchen, laundry room, and bathrooms for leak sensors — a slow leak behind a washing machine is one of the most common and most preventable sources of water damage claims
A Simple Rule of Thumb If a piece of infrastructure requires opening a wall to install later, it belongs on the pre-drywall checklist now — even if the actual device (the sensor, the smart switch, the access point) won't be installed until years after move-in. Wiring is cheap. Walls are not. Putting It Into Practice Builders working across multiple plans or phases often find it worth formalizing this into a tiered specification — a baseline "future-proofed" standard on every home, with clearly defined upgrade packages for buyers who want more connectivity, more automation, or compute capacity for AI-driven home systems. That approach keeps the base build cost-effective while giving the sales team a real, defensible story about why the home is built differently than the one down the street.