In the past I have hard wired my surveillance equipment into a dedicated box at the house. It is connected to wifi, so i can tap into it from my mobile device, when ever i want (although there is a short delay). I bought it from Costco and the box is secured in a locked room, so only I have access to it, I also have monitors set up in that room if i wanted to watch the screens or replay events. I guess you need to ask yourself i you want to store the data you gather, or just stream it, or both. The few hours of work it took to install mine has payed off, with a battery back up the system does not go down even with power outages, they would have to smash my cameras to stop the recording.
There may be legal issues though, if you are in a bad area where nefarious acts happen the police could take your system to conduct investigation. I cant advise on that aspect.
