Keep in mind I havent seen any of these properties fully just yet.

Someone has done something similar to what I want to do - building new mixed into an existing neighborhood - with five homes all side-by-side that average over $100,000 more than the existing homes in that area.Some of my questions are:Is there reason to be concerned that existing homes in the neighborhood have low values because of their age and condition, keeping in mind I want to build 9 or 10 and raise the level of the neighborhood?

Sounds like you bought a house, with taxes paid up for the quarter already and you took possession sometime during the quarter. it also sounds like they forgot to calculate the tax credit due to the seller at closing. if that's the case, I believe most purchase contracts have a clause that states you will make it right if there was some miscalculation or simple omission at closing. even if not, the old owner paid for taxes and you are benefitting unjustly. the ethical thing in my mind is to refund the extra tax. there is no reason to go to court for this.if i'm wrong, please explain the situation better.

Would love to share ideas, network and create a community of like minded individuals interested in mobile home parks.

Keep that in mind as you move forward in your real estate career, and you will do well. 

I don’t mind educating you about the areas, the history (especially prior to all the movement, 80s, 90s) and which areas to keep an eye on.

With all that being said, I have now opened my mind to the possibility of purchasing a single family home that needs minor rehab.

Never mind.

For additional piece of mind you can reach out to an attorney for a small fee and they can set it up for you.

It makes sense to have multiple buyers in mind when you put something under contract.