My houses use concrete block walls with furring strips nailed to then that then have the drywall applied on top of that.

With underlayment, people state what seems obvious -- that a thicker product will do a better job of deadening noise and perhaps of blocking moisture penetration through a concrete slab. 

However, a downside is that a lot of these Windsor properties have block foundation, which some (very few and property dependent) have bowed inwards creating foundation problems if the water management of the building is not correctly drained away.Take a look at the following City of Windsor website to get a feel for the history of the property you are considering purchasing: https://apps.citywindsor.ca/eservices/PropertyQuer...I might have missed a few things, but in general, wiring, plumbing, roof, windows, and hardware (furnace/boiler, etc.) you need to look at.

Block out 2 hours in the morning or early afternoon and start working your way down the list.  

Yes I know anyone with a few bucks can buy an a block or two of houses, but can you rent them, is the question?

Consequently, they are much lower than the house down the block that was bought three years ago.If the low allows the county to raise taxes based on the sale price, I'm sure the same law can and should apply when the sale show reduction of value in relation to the previous sale.

I have not purchased anything in Wilmington yet, not knowing the areas well enough is kind of spooking me because things can change within just a couple blocks there. 

I have a property about 3 blocks from it and I am nervous what it will do to the property value

The other walls of my property are block walls.

In JSQ, multiple apartment buildings are coming up around my block + the addition of the 2nd 50+ story Journal Squared apartment building.