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Project Zomboid Base Planner
Sketch the safehouse you'd actually survive in. Wall off rooms in one drag, pick materials, watch the threat check mark the weak spots zombies can reach, and share your blueprint as a link or PNG. Multi-floor, works on a phone, free.
How to use the planner
- Pick an element from the list and, for walls, doors and windows, a material under it.
- Draw places it where you click or drag; hold Shift while dragging for a straight line. Room walls off a rectangle in one drag. Painting over a piece replaces it, which is how doors and windows go into a wall.
- Beds, stairs, gates and workbenches cover more than one tile: click where they go, and use Rotate (or R) to turn them first.
- Erase removes what you click or drag over. Ctrl/Cmd+Z undoes a whole stroke at a time, and even Clear can be undone.
- Switch floors with the B, G, 1, 2, 3 buttons (or the [ and ] keys). The floor below shows through faintly.
- Leave Threat check on while you build: it tells you whether the ground floor is sealed and which pieces would give way first.
- Zoom with Ctrl/Cmd + scroll or the +/− buttons, Pan to move around, Fit to frame the floor, and the corner button for full screen.
Plan a base before you build it
Project Zomboid's build system is unforgiving — once you place a metal sheet wall you can't un-place it without dismantling, and dismantling on Day 30 is a noise-attracting waste of half a day you'd rather spend on something less suicidal. Sketching the base first means you commit to a defensible plan instead of half-building three different ones and dying to a horde at sundown.
The planner has four jobs: pick materials per element, place them on a multi-floor grid, see the threat check show you which weak pieces actually face the outside, and share the blueprint with a link so your group can iterate together. Nothing else.
If you're new to base design, start with the Best base layout principles guide.
Base planning guides
Principles for surviving past the first month. Each guide is short, opinionated, and links back to the planner so you can sketch the layout as you read.
- Best base layout principles →
Corner placement, double walls, generator coverage, kill funnels — the four rules every survivable base shares.
- The double-door trick →
Two doors back-to-back create an air-locked entry. Why it works, and how to lay it out so it isn't a death trap.
- Multi-floor base design →
Pulling rope ladders, second-floor sleep rooms, and why 'no ground-floor stairs' is the gold rule for late-game safety.
- Window barricade priority →
Which windows to barricade first when the moodles are screaming and the planks are limited.
- Generator placement →
Indoor-vs-outdoor trade-offs, range and noise, why the garage isn't always the right spot.
Build element reference
Every build element in the planner with material tiers, threat resistance, and the resources to build one in-game.
Browse all elements →Common questions
What does this planner actually do?+
Sketch a Project Zomboid safehouse on a grid. Draw walls tile by tile or wall off a whole room in one drag, then set doors, gates, windows, generators, containers and furniture into it. Pick materials (wood, log, metal sheet, brick) and the threat check marks the weak spots zombies can reach from outside. Share the result as a link or a PNG.
Is it free? Do I need to install anything?+
Yes, free, no install. It runs entirely in your browser — no account, no app, no save-file sync. Your base is written into the page link as you build, so bookmarking it (or sending it) keeps that exact layout, and the last base you worked on is also remembered in this browser for next time.
Does it cover multi-floor bases?+
Yes. The floor buttons above the sheet (B, G, 1, 2, 3) switch between the basement, the ground floor and three upper floors. The floor below shows through faintly so walls and stairs line up, and Copy walls from below starts an upper floor from the outline underneath it.
Why are some tiles outlined in red, orange or yellow?+
The threat check floods in from the edges of the sheet, the way zombies arrive on foot, and stops at walls, fences, doors, gates and windows. Whatever it touches faces the outside; if that piece is weak it gets marked — red for flimsy (a plain window), orange for light (two planks, a wood fence, a bare wall frame), yellow for a wooden door, a fully planked window or metal bars. Ground the flood cannot reach is tinted green and counted as protected. If nothing is tinted, there is a gap in your walls. It reads your drawing, not the game: it does not model hordes, noise or how long a wall actually lasts.
Can I share my layout with a friend?+
Yes. Share link copies a URL that opens your exact base, every floor included, and they can carry on editing from there. Or use PNG to download an image of the current floor, cropped to the base, for Discord or Reddit.
Does this work for modded Project Zomboid?+
Vanilla elements only, plus a spike-trap marker for players using a traps mod. If a mod adds new structural elements, they aren't in the picker yet.
Is it up to date with Build 42?+
Yes. Build 42 has been the stable build since July 2026, and the build costs and element notes follow its recipes. There is a basement level you can draw on. Its new crafting stations aren't in the element list, and on Build 41 a few recipes differ.
Does it work on a phone?+
Yes. The element list becomes a strip above the sheet and the toolbar scrolls sideways. Draw, Room and Erase work by dragging a finger; switch to Pan to move around the sheet, and use the full-screen button to give it the whole display.