There is a window in every new build that most homeowners do not know exists. It opens when framing goes up and closes when drywall goes on. Everything that happens during that window is cheap. Everything after it is expensive, disruptive, or impossible to do cleanly.
This is the pre-wire phase, and it is the most consequential technology decision you will make in your home, even though it does not feel like one at the time.
Why Builders Do Not Bring This Up
Your builder is managing permits, subcontractor scheduling, material delivery, inspections, and the previous owner's punch list all at once. Technology pre-wiring is not in their scope and is not their specialty. When you ask about it, the honest answer from most builders is: “We can add that later.”
That is technically true. You can fish cable through finished walls, cut drywall, and patch it afterward. The result costs three to five times more, looks like it was done as an afterthought, and often cannot achieve the same clean installation that rough-in wiring allows. “Can add later” and “should add later” are different things.
The Pre-Wire Checklist
These are the items to confirm with your builder before framing inspection and drywall. Each one is cheap to add now and expensive or impossible after.
1. Structured wiring panel location
Every home network needs a central termination point, a closet or utility space where all low-voltage wiring runs to. It should be climate-controlled (not in an unconditioned attic or garage), have a dedicated 20-amp circuit for equipment, and be accessible without moving furniture. Lock this in before framing is complete.
2. Cat6A drops in every room
Not Cat5e. Cat6A. The cost difference per run is minimal during rough-in and the performance difference over a 10-year horizon is significant. Plan a minimum of two data drops per bedroom, four in any home office or media room, and one per major appliance location. Wireless is not a substitute for wired when reliability matters.
3. Conduit from panel to key locations
Conduit is an empty pipe run in the wall that allows future cable to be pulled without opening drywall. Run conduit from the tech closet to the living room media wall, home office, and outdoor access points. It costs almost nothing to install during framing and enables hardware upgrades for the next 20 years.
4. In-ceiling speaker rough-in
If there is any chance you want whole-home audio, mark speaker locations in the ceiling now. Run speaker wire from each location back to the tech closet. You do not need to decide which speakers until later. The wire needs to be in before drywall.
5. TV and media wall blocking
Backing board (3/4-inch plywood) behind the drywall at your TV wall locations. This provides solid mounting for any TV bracket or mount, regardless of stud placement. Mount locations shift; blocking ensures you always have a solid surface.
6. Neutral wire at every switch location
Standard light switches use two wires. Smart dimmers need a neutral wire, a third wire that standard switches omit. If there is any possibility you will install smart lighting control, every switch location needs a neutral wire. This is the single most common oversight in new builds that limits smart home options later.
7. Security camera conduit to eaves and corners
Camera locations at exterior eaves, garage, and entry points. Run conduit from each location to an interior location where a DVR or NVR will live. This makes camera installation clean and protects the cable from weather and pests. Mounting cameras post-construction without conduit means exposed cable runs.
8. Doorbell, lock, and intercom rough-in
At every entry point: low-voltage wiring for a smart doorbell, power at the door jamb area for electric lock hardware, and if you want video intercom, conduit for that cable run. Entry hardware changes; rough-in infrastructure stays the same.
9. HVAC sensor and zoning rough-in
If you are building a two-zone or multi-zone HVAC system, zone dampers, return air sensors, and thermostat wiring locations need to be coordinated with the HVAC contractor during rough-in. A smart home integrator bridges this conversation because your HVAC contractor and your technology contractor are usually not talking to each other.
10. Irrigation controller location and valve wiring
If you plan to have an irrigation system, the controller location and low-voltage runs to valve locations need to go in before the slab or landscaping. Smart irrigation controllers need a data connection; plan a Cat6A drop to the controller location as well.
The Cost Comparison
Running a Cat6A data drop during rough-in typically costs $80 to $150 per run, including materials and labor. Running the same cable post-drywall, with cutting, patching, painting, and cleanup, typically costs $400 to $700 per run or more, depending on how the walls are built and how far the run needs to travel. For a home with 20 data drops, the difference is roughly $2,000 vs. $8,000+.
Speaker wire, camera conduit, and smart lighting rough-in follow similar cost ratios. The framing window is where technology infrastructure is cheap. Once it closes, you are paying for access to what is already finished.
How to Work With Your Builder on This
Most builders are willing to accommodate pre-wire specifications. They want the project to go smoothly, and a clear specification document from a technology consultant makes the electrician's job easier, not harder. It removes guesswork and reduces the back-and-forth during the rough-in phase.
The key is timing. We need to be involved before framing inspection, which is when the builder wants the rough-in subcontractors working. Walking a site after framing is done, producing a specification, and coordinating with the electrician takes a few days. Trying to do this after drywall is scheduled is too late.
The right time to call is when your permits are approved and framing is starting. Not when you are moving in, not when you notice the WiFi is bad, and not when you are trying to mount your TV and realize there is no blocking in the wall.