Looking for useful vocab for apartment hunting from people living in Japan.

I’m going to be apartment hunting soon but heading into an estate agent is intimidating. While I can make small talk at the local snack bar I don’t know enough vocab to talk about the various details and aspects of apartments.

Some examples of words/phrases I am looking for in Japanese:

Reinforced concrete

On-site bicycle parking

Guarantor

Propane gas / city gas

I hope this gives an idea and maybe this topic is too open but any words/phrases you found useful when apartment hunting would be helpful to me.