When you sell one of those you again buy several and your portfolio can compound as fast your energy can withstand.  

The timing is almost ALWAYS right to buy when the intention is to hold and save the cash flow for years and years and allow the tax savings and compounding interest let you retire earlier.

Let the money sit and accrue compound interest at a fixed rate, multiple times per year.

Double check your state & county laws...I do know in my area, there is a 10-unit minimum threshold that puts it into the MHP class. 6 units may end up in a different class, zone, etc.Myself, IF the area is conducive to it, i would buy it, rehab them all with different themes (like swampland, big easy, etc.) and create a cool Air Bnb rental "compound", where could get $50-$100 a night income per unit.

His answer was "compound Interest". 

Having grown up in Toronto, still living nearby and having friends who currently invest there, detached homes are in limited supply and that supply has been pent up for some years now compared to demand, while sustained demand due to added competition from foreign investors, local investors, and sustained low rates compound the rate of increase.  

If you were to take the annual interest payment every year and not leave it in the CD to compound, you would be receiving $1,930 every year for 10 years, which is a 6.43% return.  

Even if you could find a way to deposit $100/mo now to get the compound interest started at your age, you in 10+ years wIll look back and decide it may be the best thIng you dId.

It is compounded by the home values being low (smaller depreciation) and the rents being high- and they tax on revenue not profit.

Time is the compounding factor in income. 5 years ago I bought a home to live in and turn into a rental and now the income is double the mortgage, income keeps increasing while costs remain relatively fixed.