Depends on which JW you talk to.
Some JWs are fairly wealthy, some very wealthy. Ask one of them, and you will get their blessing.
Other JWs are of moderate means, or poor, and could not afford to buy real estate. Ask one of them, and the most likely response will be one of personal pride, how they are keeping their lives simple and "pursuing Kingdom interests first", and if you were wise, you'd do the same.
It also may well depend on which country the JW resides in. In the US, where owning your own home is deeply ingrained into the culture, most JWs would have no issue. In, say, Germany or Switzerland, well half or more of the population rent their homes, there may be a more negative response.