I just updated to QB 2014 last night, from 2011 via a cyber Monday deal ($150 for QB pro).

You could first try putting up signs that say the area is under surveillance. 

Ha Ha , I 'm only telling you what the guy said on the radio show , take it with a grain of salt , he's a constant guest on the show  and lot of his advice on internet was pretty good especially how to avoid viruses and cyber attacks on the internet the correct way.

If you currently have your home listed for sale and/or rent-to-own on ANY popular website (CraigsList, Rental Properties, Buy Owner, etc.) please be aware of a scam that has been making the rounds for most of this past year.This specific scam is originating out of cyber cafes located in the little known Republic of Liberia (you are probably more familiar with the Republic of Nigeria to the east, and the popular e:mail scams that promise huge payouts from the Nigerian lottery, or requests from a Nigerian diplomat who needs assistance in moving cash out of his country).

For example title companies prescreening deeds so they can guaranty a clear title,cyber escrows etc.

This enables you to make quick changes without doing anything physical.I would recommend installing surveillance cameras both inside and outside the property.

You may want to get the local police to perform surveillance on the home.

You might have problems installing a security camera which has a view of a shared conference room and possibly even the shared lobby.Posting signs on your entrances saying that it is under 24 hour video surveillance and having cameras inside would probably achieve your goals. 

Buy some of these dummie surveillance cameras (really cheap from some of these surplus selling mags).

Outside of real estate I work professionally within the Cyber Security realm and find fairly entertaining when dealing with malware or plain old email based scams :)