https://www.har.com/content/newsroom/Houston Real Estate Highlights in June Single-family home sales rose 1.8 percent year-over-year, with 8,518 units sold, the largest one-month sales volume of all time;Days on Market (DOM) for single-family homes declined from 50 to 48 days;Total property sales reached record levels, rising 1.7 percent, with 10,115 units sold – the first time that number has broken the 10-thousand mark;Total dollar volume increased 6.6 percent to slightly more than $3 billion;The single-family home median price rose 2.6 percent to $245,000, reaching an all-time high;The single-family home average price increased 4.3 percent to a record high of $316,463;Single-family homes months of inventory was at a 4.1-months supply, the highest level since last August and equal to the national inventory level;Townhome/condominium sales rose 4.9 percent, with the average price down 1.7 percent to $211,050 and the median price down 4.1 percent to $163,000;Leases of single-family homes climbed 4.7 percent with the average rent up 3.9 percent to $1,877;Volume of townhome/condominium leases fell 4.2 percent with the average rent up 6.7 percent to $1,662.

The pro of that is that they're in limited supply and they should be scooped up before they're too hard to find. 

Adding mfg homes will require a septic system for each and drilling a new well to supply all the homes with water.

Where there is a high demand and a low supply, there is an opportunity!

What if you use a list provider that doesn't get that specific and only supplies leads by county and not specific zip code, and then you get a call from someone outside that area?

Not sure what the margin of error is but the site might supply that.

US and Canada are very different - prices, financing, supply/demand factors, etc. 

Items like building permits, capital inflow, development, vacancy/eviction rates, population trends, business trends, commercial lease, time on market, supply, etc.

What info can I supply to help have an example offer given?

Money and Time are both in short supply and I'd very much like the freedom to spend mine as I like.