The high appreciation results in high rent growth resulting in great cash flow over a long hold if no equity growth is extracted.A few years ago case logic indicated my market had an average annual rent increase of $600/month.  

Annual turnover for rental mobile home parks is only 5% compared to 60% for apartments."  

. ~$13200  (forecast equity increase) -$4200 (cash flow) = $9k First year profit ideally that will increase annually.  

Many of those plans have a December 31 deadline for annual contributions.

Not calculating maintenance expense could end up being a nightmare.I always estimate (using either the 50%, 1% or square footage rule) the annual maintenance / first year of maintenance fees for a ALL rental property.

At annual rent increases, I do scour Zillow for market rents in the area, which I share with my tenants.

When you say 40% annualized is that per year or over the entire life cycle.  

page=LoadVirtualDoc&BookmarkID=6536) that capped annual increases to the Taxable Value of a property to the lower of 5% or Michigan's Cost of Living increase.

Some charge for annual inspections outside of renewal times, and it's $50-$60 but it's truly a full inspection.

If there were a bulk subscription I could get all my tenants for a low annual or monthly cost I would consider it though