Just like the folks on BP encourage partners without money to apply a skilled trade to get into deals, you're offering the same thing with development.  

I generally hear it's very hard to calculate Capex but can be done in a itemized/life expectancy method.

I'm looking to execute the Brrrr method around the Newmarket, Ontario and surrounding area where finding any deal under 500k is difficult, along with rehab costs, I certainly do not have the amount needed to close a deal without borrowing additional funds.

Using that method, you are never paying in advance. 

Ideally, though, regardless of buying with cash or not, I’d like to finance the home through more traditional methods — buying with a mortgage, paying cash and then mortgaging, paying cash and then getting a home equity loan, etc.My question is, do I stand a chance financing the house with no verifiable income?

the income approach is a better, more appropriate method and should be used along with comps if comps are used at all.do you know your projected noi and the prevailing cap rates for the area? 

I'm looking for agents to work with to buy my first real estate property using BRRR method. 

The trade off, in this market in particular, is most good deals are going quick, all cash, no contingencies.  

Here is a trade secret for situations just like yours. 

Purchase price: $275,000 Sale price: $465,000 Was able to refinance the condo I previously purchased (using the BRRRR method), in the same building, and do a private deal with an owner down the hall from my unit.