The #735 guard compared cache sizes around the warmed twelve-switch cycle. Once an LRU is full a cold build evicts one entry and every size stays: a union planted cold in the full pool (8/8) changed no field of the snapshot and the guard stayed green. Its `openingWallIndex` field read `card._openingWallIndexCache ? 1 : 0` of a Map and was always 1. The card now counts real builds of each floor-geometry cache in its miss branch (`_floorCacheBuilds`: wall union, inner contours, clean floors via a `cleanFloorForRoom` hook, opening wall index, light barriers, Glow clips, physical bodies, opening tunnels, light physical bodies) — never on a hit, a recency refresh, a resize seed or alias, or a clear. One pure decision (demo/performance/switch-cycle-guard.mjs) judges the window for the benchmark, the floor-cache smoke and the unit tests: any build of a pooled family fails and names the family and its growth; the single-slot families may rebuild once per switch; 2.5D keeps `_isoStructuralBuildCount`. A base bundle without the counters reads null and is not judged; a candidate must expose them. Each row reports `switchCycleBuilds` with the size snapshot as a diagnostic (the real index size there). The budgeted cacheEntries/cacheGrowth keep the index as the presence flag their `openingWallIndex: 1` ceilings were set on: no budget moves. Counted run, one sample per profile on the dev base with the counters: every large-house* profile and isometric-stage3-dense-v1 build 0 in every judged family, 12/12 physical bodies and opening tunnels, nothing in 2.5D; no family moved to the reported list. The same runner against a dev bundle reports `supported: false` and passes. AC7: demo/smoke_floor_geometry_cache.mjs fills the pool to 8 and drops one floor's union; a four-switch cycle builds exactly that union (+1, an eviction, every size the same) and the decision names "wall union" — the old size comparison sees nothing. AC1 of the smoke also reads the counters. Registry mutant: a counter that skips the evicting miss (caught by the smoke, checked by hand); browser inventory 245/200. Issue: #769 User-Visible: no Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
🏠 House Plan — a live home map for Home Assistant
📘 Full user guide · 🇷🇺 Русский · 🗂 Project issues
Your whole home at a glance
House Plan turns Home Assistant into a live map of your home. Open the dedicated House Plan item in the Home Assistant sidebar, upload a plan or draw rooms, bind them to Home Assistant areas, and the area's devices appear automatically. You can immediately see where a light is on, a door is open, a room is too cold, Zigbee signal is weak, or a leak sensor has fired.
Setup is entirely graphical: no floor-plan YAML, Inkscape, or external editor. Plan data and device positions live on the Home Assistant server and stay in sync across screens.
Edit on a desktop computer. View and kiosk are fully supported on phones and tablets. The editors are designed primarily for a mouse and keyboard; individual touch editing operations may be awkward or unavailable. See the exact touch support contract.
What House Plan provides
- Live state and safe actions. Lights and other safe devices can toggle from the plan; a lock cannot be opened by an accidental plan tap.
- Three built-in editors. Plan creates rooms, walls and openings; Device places and configures markers; Background adds lines, labels and furniture.
- Area-aware rooms. New devices appear automatically, while room cards can show temperature, humidity, light state and average LQI.
- Light and environment. Room fills, lamp Glow, wall shadows, a day-cycle backdrop and sunlight through windows.
- Flat or 2.5D. One switch in General settings › Display shows the plan with depth everywhere: raised device tiles with soft floor shadows and a soft wash of sunlight; decor and wall colours stay as you set them.
- Doors, windows, gates and vacuums. Openings follow real contacts and locks; a robot can show its position, dock and travelled path.
- Several floors and screens. Space tabs, swipe navigation, local viewport, and a separate initial floor for each card.
- Wall-display kiosk. A plan-only view with fullscreen navigation and icon sizes saved for that display.
Your first working room
- Install the integration and open House Plan in the Home Assistant sidebar.
- Create the first space: upload SVG/PNG/JPG/WebP, reuse an uploaded image, or choose no image and draw the plan by hand.
- In Plan, select Walls and draw one continuous chain around the room: when it closes an area, the room dialog opens.
- Name the room and bind it to a Home Assistant area. Use “No area” for a room that has no devices.
- Open Device: devices from the bound area are already placed; drag their markers to the correct positions.
- Optionally use Background for lines, text and furniture.
- Return to View. The plan now displays live state and accepts safe actions.
Every workflow and edge case is in the full user guide. The Background editor contract and vacuum guide are the authorities for those subsystems.
Installation
HACS
House Plan is in the HACS default catalog — no custom repository needed.
- In HACS search for House Plan and install it.
- Restart Home Assistant.
- Open Settings → Devices & services → Add integration → House Plan.
The sidebar page and optional dashboard cards are registered automatically.
After installing or updating House Plan,
restart Home Assistant and fully reload the page: Ctrl+F5 on Windows/Linux or
Cmd+Shift+R on macOS.
Storage mode (Home Assistant default)
No YAML is normally needed. If automatic registration did not make the card
available, open Settings → Dashboards → menu ⋮ → Resources → Add
resource, enter /houseplan_files/houseplan-card.js, and select JavaScript
module.
YAML resources mode (Home Assistant 2026.2+)
To manage resources in configuration.yaml independently of the dashboard
mode, use:
lovelace:
resource_mode: yaml
resources:
- url: /houseplan_files/houseplan-card.js
type: module
Legacy Home Assistant 2024.6–2026.1
Only for a full-YAML dashboard that is already managed in YAML, use:
lovelace:
mode: yaml
resources:
- url: /houseplan_files/houseplan-card.js
type: module
mode: yaml changes the dashboard itself to YAML mode. Do not switch a storage
dashboard to legacy YAML just for House Plan; use the Storage mode instructions
above instead. Do not use the on-disk path inside custom_components; Home
Assistant does not serve that path as a JavaScript module.
Manual installation
Copy the complete custom_components/houseplan release folder to
config/custom_components, restart Home Assistant, and add the House Plan
integration. Do not copy only houseplan-card.js: the card also uses an
internal manifest and content-hashed modules from the same release.
Open House Plan
After the integration is added, open House Plan in the Home Assistant sidebar. This full-page view is the primary entry point and needs no dashboard or YAML setup. It remembers the last space but always returns from another HA page in View rather than reopening an editor. Users without editing permission see the same live plan without editor controls.
If the sidebar entry cannot be registered, the integration and existing dashboard cards continue to work; check Settings → System → Repairs → System information → House Plan after restarting and hard-refreshing HA.
Optional dashboard card
Add the card only when House Plan must be embedded in a dashboard. In a Sections view it requests full width by default, while a manual size chosen in HA remains authoritative. Add it in the UI or as:
type: custom:houseplan-card
title: House plan
Different screens may start on different spaces:
type: custom:houseplan-card
default_floor: ground
All cards share server-side rooms and coordinates. Current mode, viewport and selected space remain local to the screen. Revision checks and live sync cover concurrent clients, but avoid editing the same object in two browsers at once.
Detailed documentation
- Full user guide
- Mouse/touch/keyboard matrix
- Plan tools
- Stairs and floor links
- Background editor
- Robot vacuums
- Presence radars
- PDF export
- Touch support
Support and feedback
- Questions and plan examples: Telegram @ha_houseplan.
- Bugs and proposals: GitHub Issues.
- Before reporting, update House Plan, restart HA and hard-refresh the page. Include the version, browser, logs and reproduction steps; private entity IDs may be replaced with fictional ones.
License: MIT.






