I would rephrase your title ... my dog's life has completely changed ... NOT my dog has completely changed!!!
You and your family sound like you're going through A LOT right now, and the dogs are feeling it, and you're paying for it.
The very FIRST thing you need to do is BREATHE!!!!! You've had some unpleasant encounters, and you are probably quite nervous / anxious over the next one. Don't let your dogs sense that.
Take them out one at a time, do it later in the evening when there are less distractions, and let them get the feel of their new neighbourhood. Have your neighbour with the lab walk on the other side of the street and walk past each other. They don't have to greet, heck they don't even have to be friends, but you should be able to work towards walking past each other with 20-30 feet between the two of you.
You'll get lots of advice on here, just remember that you ARE in control. You have been before, you're overwhelmed! Just take a step back, breathe, figure out what you want to do and do it ... but one doggie at a time!!!