@Eldar ManetshIf you're serious about finding a mentor, come up with a value proposition that is hard to refuse.

But, as experts have often said in the past, trying to time the market can also be a losing proposition for the average investor.  

A loan is non taxable yet all the responses keep referring to a taxable distribution with fed state and 10% penalty which makes a distribution a horrible idea.401k loan can be taken in two flavors 5 year term personal and or if you can document its a primary residence you can get a 15 year fixed which makes the cashflow deduction from your paystubs a bearable proposition since a 5 year term presents a much higher payment.You can borrow 50k or 50% whichever is less at rates around 1 + prime (3.25% since 2009).You end up paying yourself a 4.25% rate interest and in essence become your own private bank.The funds are paid back to yourself with after tax dollars deducted from your biweekly or no monthly pay.Hope that clarifies, I've had borrowers use 401k loans from a variety of administrators such as fidelity, vanguard, nationwide, ING, prudential, and etc and I've seen them bein used for purchase or refinance on primary residences.

The concept is somewhat similar to the Kelly criterion from probability theory, which defines the % of your total bankroll you should be investing/gambling in a given proposition to optimize your profit and minimize your risk of ruin.

It is a get wealthy slow proposition.  

For instance, here in Arizona we just passed Proposition 208 which will increase taxes for people earning more than $250k and $500k as married persons filing jointly.

In regard to the proposition that,“if I was betting I would bet that most of these parcels if not all are bare land.

For properties with rents that are well below 94% of current market value, the ceiling on rent increases detracts from the value proposition of the deal.I think this will also make it difficult for working (middle) class housing stock to grow.

It is a time value of money proposition, less taxes paid and more money in your pocket now is worth more to you now than in the future, and does that time benefit of money analysis outweigh the cost of doing the study.2) Any excess losses created by the cost segregation that cannot be taken are carried over to future years, and can offset you rental and other sources of passive income, including other rental properties (assuming not a qualified real estate professional). 

Therefore I have come to the conclusion I will forgo a certain amount of investment opportunity if I can buy an "experience" if that value proposition makes sense.