For some, time is money, and if that's true, the Time Value of Money principle quantifies things, and personally I think it's one of the best ways to quantify your personal time, especially for a quant-nerd like myself. 

.#5 Practice, Practice, PracticeWalkthrough potential rehab properties (or find properties virtually online) and practice creating detailed scopes of work, quantifying repairs and estimating rehab costs for the projects.Please let me know if you have any other questions.

Get one owner to allow you to inspect one building (do it for free), and achieve quantifiable results, and you'd be off and running.

One potential advantage that I am trying to decide to quantify for the passive is refinancing out and redeploying that cash later.

For me to hire someone at $15/hr, they'd need to be bringing at least $45/hr of quantifiable benefit to my business.

So it might be worth running the numbers with these scenarios in mind.Also it may be worth trying to quantify the Irr and CoC returns for prospective investors.

Most important risk to understand is the unknown, which is difficult to qualify or quantify.

Quantify how much it will be. 

Numbers, Numbers, NumbersOne of the most difficult shifts in perspective is in looking at potential investment properties in terms of the numbers, and not in terms of emotional attachment or other non-quantifiable criteria.

@Russell Brazil How do you quantify what you spend your time doing while on BP?