Room Adjacency Matrix for Floor Plans
Build your room-by-room adjacency analysis in the browser. Drop the result straight into your floor-plan deck.
A room adjacency matrix is the specific application of the adjacency matrix to a residential or small-commercial floor plan, where each item in the matrix is one room and each cell encodes whether two rooms should sit next to each other on the final plan. Architects and interior designers use it during the programming phase — before the floor plan is drawn — so that the resulting layout can be justified as a direct consequence of the analysis rather than a creative impulse. Once a client says "I want a great-room layout with the kitchen open to the dining and living spaces," that's primary adjacency between three specific rooms; once they say "the home office can't be next to the kids' wing," that's undesired adjacency. The matrix turns those scattered requirements into one rigorous document.
This tool gives you a no-account, browser-based way to build that matrix and drop it into a presentation. Start with the 3-Bedroom Home template — pre-loaded with realistic primary, secondary, and undesired adjacencies for a typical family residence — and adapt it to your project. Click any cell to cycle its state; the triangular grid updates live as you add or remove rooms. Pick a theme that matches your studio's visual language, give the matrix a title, and you've got a slide-ready artifact in under a minute.
The free tier gives you a watermark-free PNG download plus a JSON state-file backup, which is enough for personal-reference and rough-draft use. The Pro upgrade unlocks editable PowerPoint export — every cell, marker, and label becomes a real selectable shape in your deck — plus vector SVG and copy-to-PowerPoint for designers who prefer pasting into an existing slide. This room-adjacency variant is a long-tail entry point into the larger Adjacency Matrix Diagram tool; for the full set of use cases including commercial, software, and curriculum applications, start from the canonical landing page.
Related variants
Same tool, configured for a related use case.
Frequently asked questions
What is a room adjacency matrix used for?
A room adjacency matrix records which pairs of rooms in a floor plan should be next to each other, which should be reasonably close, and which should be kept apart. Designers and architects use it as a programmatic-analysis tool to defend a floor plan's layout in client presentations, design reviews, and academic project documentation.
How many rooms can a room adjacency matrix include?
There's no hard cap, but the matrix becomes visually dense above ~20 rooms and effectively unreadable above ~50. Most residential adjacency matrices stay between 8 and 15 rooms — that's enough to capture meaningful relationships without overwhelming the viewer in a client deck. For very large projects, break the analysis into multiple matrices by floor, by wing, or by program area.
How do I create a room adjacency matrix for a floor plan?
List each room in the textarea on the left, one per line. Click cells in the triangular matrix to mark each room pair's relationship. Add a title that describes the project, pick a theme, and export. For a head start, load the 3-Bedroom Home starter template and adapt it — most residential projects share a similar core set of primary adjacencies (kitchen-dining, master-bath, etc.).
Can I print the room adjacency matrix to include in a printed deliverable?
Yes. Download the SVG (Pro) for the cleanest print result at any size, or download a high-resolution PNG (free for signed-in users, watermarked for anonymous) for use in image-based workflows. The matrix's typography and markers are tuned for legibility at both screen and print resolutions.
What's the difference between this tool and a floor-plan drawing tool?
An adjacency matrix is a relationship-analysis tool — it captures which rooms should be near each other but doesn't show their actual geometry, sizes, or wall positions. A floor-plan drawing tool (like AutoCAD, Revit, or SketchUp) is where you commit to actual room shapes and dimensions. The matrix comes first; the floor plan follows from it.