How to Read a Stacking Plan Before You Buy or Rent

If you've shopped for a new condo or an apartment recently, you've probably landed on a website that shows the whole building as a grid you can click: floors stacked in rows, units as little blocks, some coloured in and some greyed out. That's a stacking plan. Until a few years ago only brokers and developers ever saw one, and now it's often the most honest page in the entire marketing package, as long as you know what you're looking at.

The basics take about ten seconds

Each row is a floor, each block is a unit, and the colours tell you status: available, reserved, sold or leased. Click a block and you'll usually get the floor plan, the price, the square footage and which way it faces. That's essentially the whole vocabulary, and once you have it, the useful part is what you can work out from the layout.

Reading between the blocks

Take the "starting at" price from the ads and find the unit it belongs to. More often than not it's one lonely unit on the second floor, right above the garage ramp. The stacking plan won't announce that, but it shows you plainly enough, and that changes the conversation you'll have in the sales office before you've even walked in.

The pattern of what's already gone is worth studying too. If an entire line of units has sold from floors three through nine, that layout is popular and whatever's left above it will be priced to match. If a whole corner sits untouched, that's worth a question, sometimes it's a view problem the diagram can't show you.

Comparing twins is where a stacking plan really earns its keep. The same floor plan can exist on eight different floors, facing two directions, at prices hundreds of dollars apart. A catalogue-style website flattens all of those into "Unit Type B2." Here you can put the courtyard-facing sixth-floor version next to the highway-facing tenth-floor one and decide for yourself what the gap is worth.

A couple of caveats

Not every greyed-out unit is actually sold. Developers often release inventory in phases, so some blocks are just being held back for a later launch, and it's reasonable to ask which is which — and, while you're at it, how current the plan is. The good ones update the moment a unit sells; Planpoint Viewer, one of the tools behind many of these, keeps a collection of live examples if you want to see what a well-maintained one looks like. A plan that's three weeks stale isn't telling you much.

Treat it like a seat map

Most people wouldn't book a flight without glancing at the seat map, and a stacking plan rewards the same habit. The sales office already knows things move faster when a buyer has picked a specific unit before arriving, so there's no reason to walk in with less information than they're expecting you to have. Spend the ten minutes on the grid first.