Rates are generally 4s-low 5s and some combination of 20-25% down and 20-25 year amortizations, many market variations.  

Although you could do this to a degree there are so many variations and "if then" situations.My background is as a CPA/Controller/CFO. 

AB is higher than BC when I compare houses of similar values (based on assessments-$2300/yr vs $3400/yr).Within each province (just like the UK) you have variation in the markets. 

When you find a deal that you like, you can get creative regardless of variations in current income.

@Robert Armstrong although there are variations to the following strategies, there are two main strategies that park owners pursue. 

.- Option A) Start the process of finding/building a relationship with a lender, realtor, property manager... while being up-front with them that I first need to sell my Austin properties first...Variation A.a: Start 1031 exchanging them as their leases end one by one...Variation A.b: Forgo the exchange and pay taxes now...Variation A.c: Try to offload all of them in one shot as a portfolio...- Option B) Start selling the Austin properties first and figure it out as you go.

As Ben said above there are variations in the burbs but this will get you in the ballpark.

Like much of the Birmingham area, there’s decent variation within the zip code.

I recreated the numbers using 20% down on a 30-year schedule and got the following:When running the same using a 20 year amort schedule, I actually get numbers a little higher than yours (9.5% ROI), but a little variation is to be expected as we are talking about a very long period of time and there are always subtle nuances in calculating performance (some syndicators are experts at this).

The taxpayer and EAT may enter into agreements or arrangements providing that any variation in the value of a relinquished property from the estimated value on the date of the EAT's receipt of the property be taken into account upon the EAT's disposition of the relinquished property through the taxpayer's advance of funds to, or receipt of funds from, the EAT.