Well, recently I've been accelerating the process.  

If a market appreciates taking on debt and acquiring more properties accelerates the strategy.  

I use the market to accelerate savings and putting parked capital to work while saving for the next investment. 

And for a third the reinvestment of net income is assured to really accelerate things for you.Get a multi year sheet going and figure your starting asset balance and the rates of each investment to arrive at a blended portfolio rate of return. 

They called it redlining and it accelerated the RE bubble.If a person approaches you with a lease option alternative and they weren't able to explain it to so that you understood it, don't do it!

If you have Student Loans or other household debt - develop a plan to accelerate paying them off. 3.

Plan is to replace all toilets and shower heads with low flow during tenant turnover but we might accelerate that process. 

It was on MLS as well and honestly, I think a big portion of our numbers was due to the acceleration of the market and having got in the house when we did.

Of course because of the engineering work and on site survey involved the cost of a study is high, but the tax benefits of accelerated depreciation far outweigh the cost of the study for most properties.

I'm at 83 in 4.5 years but it is accelerating now (I was at 40 units at the 3.5 year mark).