I implemented inventory management in /shopping: I hated crossing shopping lists in the market and having to think about it all again later. Much better to keep a pre-determined list of stuff you want to always have at home (with the option to snooze it if you are not feeling like buying that for now, but may be in the future) and only say if you do have it or if you need to buy it.
But you're asking to have a list of non-consumable stuff you have being able to record where it lives; I'd just use shopping, mark as something that I have, and put it's location on the description. You could create a category there: "House stuff" or something.