A local-first smart home runs the automations for your vacation rental on a hub physically at the property, so guest access and devices keep working even when the internet or a vendor's cloud goes down. For short-term rentals — where a locked-out guest at midnight is a real, recurring risk — that reliability is the difference between a smooth check-in and an emergency call. Staykey is built local-first on Home Assistant for exactly this reason.
Cloud-only smart home gear is convenient until the moment it isn't. This guide explains what local-first means, why it matters specifically for rentals, and what you trade away by depending on someone else's servers for your front door.
What does local-first mean?
Local-first means the brain of your smart home lives on the property, not in a data center. A hub running Home Assistant — on a Raspberry Pi, Home Assistant Green, or mini PC — executes your automations on local hardware you own.
The cloud still has a job: syncing your booking calendar, delivering a guest portal link, and letting you manage everything remotely. But the cloud is a convenience layer, not a dependency for the core function. The decision to honor a valid lock code is made locally, on-property, on hardware in the building. Contrast that with a cloud-only lock app, where every unlock decision routes out to a vendor's servers and back.
Why does local-first matter for vacation rentals?
Rentals raise the stakes in a way a personal home doesn't. You're not the one standing at the door — your guest is, often late at night, often in an unfamiliar place, with no spare key and no way to call you that doesn't sour the stay.
Four things make local-first the right default for a rental:
- Reliability through outages. Internet drops, ISPs have incidents, and vendor clouds go offline. A local-first system keeps honoring valid codes through all of it.
- No per-device cloud fees. Cloud-only ecosystems often charge per door or per device. Owning your hub turns that into a one-time hardware cost.
- Privacy. Less of your guests' day-to-day device activity is routed through third-party servers when automations run on-property.
- No vendor lock-in. An open platform means you're not trapped in one company's catalog, pricing, or roadmap.
Cloud-only vs local-first
The trade-offs line up cleanly once you put them side by side.
| Cloud-only | Local-first (Home Assistant) | |
|---|---|---|
| Where automations run | Vendor's servers, across the internet | On your hub, on the property |
| Behavior in an outage | Access can fail if internet or cloud is down | With local-radio locks (Z-Wave, Zigbee, Matter), valid codes still work; automations run locally. Wi-Fi locks that depend on the vendor cloud may not. |
| Ongoing cost | Often per-door or per-device subscription | Buy the hub once; flat $15/mo per property with Staykey |
| Device choice | Limited to the vendor's supported catalog | 1,000+ Home Assistant integrations, no lock-in |
| Guest data | More activity routed through third-party clouds | More stays on hardware you own |
| Who controls the roadmap | The vendor | You — the platform is open-source |
The honest caveat: a local-first setup means you own a hub, which is one more device at the property. Staykey's job is to make that hub effortless to live with — so you keep the reliability and openness without the maintenance burden.
How much does a local-first setup cost?
The cost shape is different from cloud-only, and usually cheaper over time. You buy a hub once — a one-time hardware purchase — instead of renting access by the door every month. Home Assistant itself is free and open-source.
Staykey then sits on top at a flat $15/mo per property ($25/mo for ProHost), with unlimited devices included. Add a second lock, a thermostat, and a noise sensor to the same property and your bill doesn't move — a sharp contrast with per-device cloud pricing that climbs every time you expand. See the full breakdown on the pricing page.
Does local-first mean I lose remote control?
No. This is the most common misconception. Local-first doesn't mean offline-only — it means the core function survives an outage, not that you give up remote management.
When the internet is up (which is most of the time), you manage everything remotely, bookings sync automatically, and guests get their portal link. When the internet is down, the fallback is graceful: with a local-radio lock (Z-Wave, Zigbee, or Matter), the lock keeps honoring valid codes because that decision was always made locally. (Cloud-dependent Wi-Fi locks are the exception — they may not honor codes during an internet outage.) You get cloud convenience on a local-first foundation, rather than betting your front door entirely on a connection you don't control.
What about privacy and vendor lock-in?
These two often get overlooked, and they compound over the life of a rental.
On privacy: when your automations run on a hub you own, the routine signals of a stay — when a lock is used, when a sensor trips, when a thermostat changes — don't all have to flow through a third party's servers to function. A cloud-only ecosystem, by design, sends that activity out to the vendor. Local-first keeps more of it on the property, which means more control over what leaves and a smaller third-party footprint around your guests.
On lock-in: a cloud-only platform owns the relationship with your devices. If the vendor raises prices, drops a lock you rely on, or changes its roadmap, you absorb it. With Home Assistant, the hub and integrations are yours — you can swap locks, add device categories, or change the layer on top without re-buying a platform. That freedom is why Staykey runs on Home Assistant rather than a closed stack: you're never trapped, including by us.
Where does Staykey fit?
Staykey is the rental-specific layer on top of a local-first Home Assistant setup. Home Assistant gives you the local execution and the open device ecosystem; Staykey adds what a short-term rental actually needs:
- Calendar-native, per-booking guest codes that rotate automatically.
- A single guest portal link per stay — no app, no account for the guest.
- Booking-aware cleaner access tied to your calendar (ProHost adds crew management).
- Maintenance of the integrations, so you're not on call when a firmware update or feed change breaks something.
If you want to see exactly how the locks piece works end to end, follow how to automate Airbnb locks with Home Assistant. If you're weighing building it yourself, Staykey vs DIY Home Assistant is the honest build-vs-buy.
Build on a foundation you own
A local-first smart home gives your rental reliability that survives outages, costs that don't climb per device, and freedom from any single vendor. Staykey delivers all of that on Home Assistant — and you can try it on your own hardware with a free 30-day trial, cancel anytime, no surprise charges. When you're ready, start your trial.