To take depreciation you'll need to add the house as asset. This isn't done under the Property Info/Basic Profile section. It sounds like you have it set up properly and you just need to add the asset for depreciation.
To do so: Edit the Rental > Answer questions till you arrive at Summary of your XYZ Rental > Scroll down and click Start/Edit next to Assets/Depreciation > Answer the questions to add the house as an asset.
Please let me know if this resolves your issue or if you still have questions.
