Houses, cars, etc. don't count since the Consulate or USCIS is not in real estate and doesn't check if the house is right out owned or has a mortgage on it. On top of that it can now take months or even more than a year to sell the house and only money that can be spent to get through the first few months until a job is find, count.
If you own your house out right it might help to take proof of that to the interview just as if you are already in the USA and you have health care bring the proof with you. It all comes down to the interviewer and if that person thinks you might become a liability to society and that is something they want to avoid.
As a previous poster stated...some or maybe most were asked for proof or a I-134 but some were never asked but you don't want to end up not having it if they need it because it will cause a delay in your case since they will put you on administrative process which can takes weeks or months.