Home Assistant is often hosted locally because smart-home devices live on a home network, but a VPS can still be useful for remote dashboards, MQTT brokers, automation services, VPN access, public webhooks, or a cloud-hosted Home Assistant deployment when local device access is not required.
The biggest question is architecture rather than hardware. A cloud VPS cannot automatically reach local-only devices unless a secure tunnel or another integration path connects the two networks.
Key takeaways
- 2 GB RAM is enough for many lightweight Home Assistant VPS deployments.
- A VPN or secure tunnel is usually required to reach local-network devices safely.
- Home Assistant itself is not the main challenge; network design and add-ons often are.
- Backups and configuration exports are essential before upgrades.
- Use a nearby VPS region for responsive dashboards and remote control.
When a VPS makes sense for Home Assistant
A VPS is useful when Home Assistant primarily consumes cloud APIs, when a public webhook endpoint is required, or when you want a central remote automation service independent of home power and internet reliability.
For devices that only exist on the LAN, a tunnel such as WireGuard can connect the VPS to the home network without exposing device ports directly.
RAM and add-on sizing
Two gigabytes is sufficient for a modest Home Assistant installation with a limited number of add-ons. Four gigabytes is more comfortable when the same VPS also runs MQTT, Node-RED, databases, monitoring, or other services.
Storage grows through history data, logs, backups, and add-on state, so retention policies matter.
Network security and remote access
Do not expose internal smart-home services casually to the internet. Use HTTPS, strong authentication, firewall rules, and preferably a VPN or trusted reverse proxy architecture.
The VPS can become an attack path into the home network if the tunnel is overly permissive, so limit routes and services to what is actually required.
Backups and failure planning
Keep Home Assistant backups outside the VPS and document the network tunnel, DNS, and integration configuration needed to rebuild the service.
Automation infrastructure becomes important quickly. Recovery should be tested before the home depends on it.
Frequently asked questions
Can Home Assistant run on a VPS?
Yes, especially for cloud-integrated devices, remote automation, or setups connected back to the home network through a secure tunnel.
How much RAM does Home Assistant need?
Two gigabytes is enough for many small deployments; 4 GB is useful when several add-ons share the server.
Can a VPS access local smart-home devices?
Only if there is a secure network path such as a VPN tunnel or another supported integration between the VPS and home network.
Should Home Assistant be hosted locally instead?
Local hosting is often simpler for LAN-only devices. A VPS is useful when remote availability or cloud-facing integrations are more important.