Before you buy a single smart switch or motion sensor, you need to understand the infrastructure that makes local-only automation possible. This home automation network requirements checklist covers the physical wiring, network architecture, power backup, and protocol-specific requirements you'll need to run a privacy-first smart home—one that doesn't phone home every time you turn on a light.

I learned this the hard way. My first automation setup failed spectral-style because I assumed my existing network could handle 50+ Zigbee devices. It couldn't. The mesh collapsed during simple automations, devices dropped offline randomly, and I had no fallback when the power went out. This checklist is what I wish I'd followed before spending hundreds on incompatible hardware.

Network Infrastructure Requirements

Your network is the foundation. Get this wrong, and even the best local-only devices will behave like cloud-dependent garbage.

- Dedicated 2.4GHz SSID for Wi-Fi devices: Most locally-controlled Wi-Fi devices (like ESP32-based sensors running ESPHome) only support 2.4GHz. If your router auto-selects bands or uses a unifie…