The minimum recommended size habitat for a single small – medium sized rabbit is 4′ X 2′. In NIC terms that’s 3X2 grids and at least 2 grids high. 

Here’s a visual of that:

I’m not sure I understand your height limitations? If you only have room for less than a grid tall then I do not think that would be tall enough. They need to have enough height to fully stand up on their hind legs. 

Do you have any other space that would work for a bunny habitat? 

Edited to add: A single grid is 14″ X 14″.

Hi! The general rule for the house space of one rabbit is, that the rabbit must be able to stand on its hind feet without touching the top of the cage, the rabbit must be able to hop at least three times across the cage, and the rabbit must be able to lie in any desired direction. Double this if you get two rabbits.

For the second floor, you can put wooden dowels across the cage, and put a piece of plywood with linoleum glued on it to the top. For extra support, you can put NIC grids below this.

If you have the space, I highly reccomend attaching an x-pen to the condo, or your rabbits could just live in an x-pen. My two rabbit live in a 8ft x 5ft x-pen and they love it.

Also, I reccomend that you get two bunnies so they can keep each other company while you are at work. A spayed female and a neutuered male bunny get along great.

Hope I helped

The nice things about grids is they’re easy to customize. You can overlap grids, ect and make a habitat fit to your space. You could probably even make the roof diagonal or leave it off if you plan on building to the “ceiling” of the space. Do you have a pick of the area? Maybe we could help you come up with some more ideas (and I’m curious because it sound like a neat little nook!).

I don’t think one grid tall is enough for a mini lop unless that section was only for a sleep area and the rest of the condo was taller. Also, in order to have the height needed for standing up on hind legs, you would need two grids tall (maybe one and one half?) per condo level. If you have more than one bun sharing the space you’ll also need more square footage. Any chance you can go wider than the width of the stairs since they’re open? Maybe have a larger condo perpendicular to the steps underneath the steps at the tallest part of the opening and then have an attached play area that slopes with the steps?