Home Assistant Developer Docs

Document Structure

Overview. Explains various layers that make up Home Assistant.

Core. Explains how to build new integrations for Home Assistant.

Frontend. Explains how to develop the user interface of Home Assistant.

Android. Explains how to contribute to the Android companion app.

Apple platforms. Explains how to contribute to the iOS companion app.

Popular Topics

• Add a new integration
• Translate Home Assistant
• Home Assistant API

Source Code

• Home Assistant Core
• Home Assistant Frontend
• Home Assistant Android
• Home Assistant iOS

Recent Blog Posts

• Deprecating config entry listener with reloading methods in config flow
• Frontend component updates in 2026.5
• Frontend context groups, new context decorators and deprecated contexts
• Serious about serial: migrating from pyserial to serialx
• New radio frequency entity platform for RF device integrations

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