Valheim Floor Plan

Build structures in Valheim from pre-designed floor plans.

Anyone who has spent time building in Valheim knows the real work starts before the first wall goes up — clearing uneven ground, wrestling with terrain, nudging pieces into alignment one agonising centimetre at a time. Valheim Floor Plan takes that grind away. Design your layout once in the included browser-based Designer, save it as a .vfp plan file, and the mod handles the rest: it levels the terrain, snaps a snapshot for easy undo, and constructs your entire foundation in seconds. No more tedious ground prep or painstaking piece-by-piece placement — just load your plan, pick your spot, and build.

This package includes two components:

ValheimFloorPlan mod — a BepInEx plugin that reads .vfp plan files and builds them in-game.
Valheim Floor Plan Designer — a browser-based app (included) for creating and editing .vfp plan files.

Included in this package:

The mod DLL (installed automatically under BepInEx/plugins)
The Designer web app (BepInEx/plugins/ValheimFloorPlan/Designer/)
Sample .vfp plans to get started immediately

Creating Floor Plans

Open the Designer and create or edit a plan.
Save/export a .vfp file.
Point the mod config FloorPlanFile to that .vfp file.

In game, press the build hotkey (default F8) and place the design. A terrain snapshot is taken automatically before placement.

While the preview is active, use these keys to adjust placement:

Key	Action
`↑` `↓` `←` `→`	Move the plan forward / backward / left / right
`Q`	Rotate left (45°)
`R`	Rotate right (45°)
`Left Shift` (hold)	Fine-adjust mode — smaller move/rotate steps
`E`	Confirm and build at current position
`RMB` / `Escape`	Cancel placement

Note: All keys are configurable in the BepInEx config file.

While positioning the plan, watch for these visual markers in the world:

White rectangle — the inner leveled pad: the exact area of ground that will be raised and flattened to sit your foundation on.
Green rectangle — the outer terrain-change boundary: terrain blending extends to this edge, giving a smooth transition rather than a hard cliff.
Dark red/brown cross marker — the exact placement origin point at the centre of the plan.
Orange diamond markers — terrain edge risk warnings. These appear when the surrounding terrain is uneven enough that the leveled edge may produce visible tears or spikes. Move or rotate the plan until they disappear (or reduce) for the cleanest result. Markers turn red when risk is high.

Note: A HUD message also reports the current risk level (LOW / MEDIUM / HIGH) along with step (the steepest cross-edge height jump) and relief (total height range around the footprint) to help you judge whether to nudge the plan before building.

To undo, press the undo hotkey (default F9). This removes all placed building pieces and restores the terrain to the snapshot.

IMPORTANT: Terrain can only be restored within the current session — if you leave the area or reload, the terrain snapshot is lost. Building pieces can be undone across sessions because they are tagged as built by Valheim Floor Plan.

Config Options

Config file path:

BepInEx/config/com.alexdroz.valheimfloorplan.cfg

All values below are configurable in that file.

General

Option	Default	Allowed values	What it does
`FloorPlanFile`	(empty)	Any valid file path	Full path to the `.vfp` file exported by the Designer.
`BuildHotkey`	`F8`	Any valid `KeyboardShortcut`	Starts plan preview/build flow.
`UndoHotkey`	`F9`	Any valid `KeyboardShortcut`	Removes placed VFP-tagged pieces and restores terrain snapshot.
`ProgressMessagePosition`	`CenterLeft`	Valheim `MessageHud` positions (`Center`, `TopLeft`, `TopRight`, etc.)	HUD slot for build-progress messages. `CenterLeft` is accepted as an alias and maps to `Center`.
`WarningMessagePosition`	`TopLeft`	Valheim `MessageHud` positions (`Center`, `TopLeft`, `TopRight`, etc.)	HUD slot for warnings/risk messages. `CenterLeft` is accepted as an alias and maps to `Center`.
`BuildOriginForwardOffset`	`12`	`10` to `20`	Initial preview origin distance in front of the player (meters).

Terrain

Option	Default	Allowed values	What it does
`TerrainLevelPasses`	`2`	`1` to `5`	Main leveling pass count before spike cleanup. Lower is faster; higher can smooth stubborn terrain.
`TerrainSpikeCleanupPasses`	`2`	`1` to `5`	Post-leveling spike cleanup pass count.
`TerrainStampRadius`	`3.0`	`3.0` to `6.0`	Radius of each terrain stamp disc (meters). Also controls outer terrain blend reach.
`TerrainHighPointDelta`	`0.0`	`0.0` to `4.0`	Extra height added to sampled highest point (`targetY = highest + delta`).
`TerrainUseStagedRaise`	`false`	`true` / `false`	Experimental staged vertical raise mode instead of single full-height raise.
`TerrainRaiseStepHeight`	`0.5`	`0.15` to `1.5`	Max vertical raise per stage when staged raise is enabled (meters).
`TerrainMaxRaiseStages`	`1`	`1` to `16`	Hard cap on number of staged raises when staged mode is enabled.
`TerrainSkipSatisfiedCenterStamps`	`true`	`true` / `false`	Skips center stamps where sampled terrain is already at/above target height.

Building

Option	Default	Allowed values	What it does
`ExternalWallHeight`	`1`	`1` to `4`	Stacks outer-perimeter `Wall`/`Pillar` pieces vertically to this many levels.
`WallPillarMaterial`	`Stone`	`Stone`, `Wood`	Chooses material set used for `Wall` and `Pillar` types.

Preview Movement/Rotation

Option	Default	Allowed values	What it does
`MoveStep`	`2.0`	`0.25` to `10.0`	Nudge distance per move key press (meters).
`FineMoveStep`	`0.5`	`0.05` to `5.0`	Nudge distance per move key press while fine-adjust key is held (meters).
`RotateStepDegrees`	`15`	`1` to `90`	Rotation applied per rotate key press (degrees).
`FineRotateStepDegrees`	`5`	`1` to `45`	Rotation applied per rotate key press while fine-adjust key is held (degrees).

Preview Keys

Option	Default	What it does
`MoveForwardKey`	`UpArrow`	Move preview origin forward relative to camera.
`MoveBackwardKey`	`DownArrow`	Move preview origin backward relative to camera.
`MoveLeftKey`	`LeftArrow`	Move preview origin left relative to camera.
`MoveRightKey`	`RightArrow`	Move preview origin right relative to camera.
`RotateLeftKey`	`Q`	Rotate preview counter-clockwise.
`RotateRightKey`	`R`	Rotate preview clockwise.
`ConfirmKey`	`E`	Confirm current preview placement and start build.
`CancelKey`	`Escape`	Cancel preview. (Right-click cancels too.)
`FineAdjustKey`	`LeftShift`	Hold for fine movement and fine rotation.