You are still in your window where you can sell the property and exclude it from federal and CA capital gains taxes as your primary residence. 

We started with these goals:Business partner wants to retire in ~6 years.I want to retire in ~20 years.We want to have $120k in cash flow by year 6 and $600k in cash flow by year 20.After buying and improving each business or property we want to outsource management.With these goals in mind we came up with a plan to invest $220k per year for the next 5 years ($1.1m total excluding capex), purchasing one passive income business (apartment building, storage units, ???)

Because I've seen quite a few calculators or articles excluding the potential tax saving on the interest payment, which obviously would have a big impact on the profitability of the operationsWhat's your view on that?

I was checking their website yesterday and you are right it didnt exclude condos for non owner occupied HELOCs.

He priced out the job at 20K, excluding any inspection fees and permits.

Note that only single-family homes were included in this study, and that communities with less than five transactions were excluded.

I determined the rent by averaging results within 1.0 miles as reported on rentometer.com (excluding the really highest).

So if I excluded them, then I'd also be about +$500 per month.

Right now there are 46 2-4-plexes for sale in Plymouth County at $680 or less, excluding short sales.There are 151 in Bristol County, the vast majority being in Fall River and New Bedford. 

I have been pivoting from value to cash flow plays (while always adding value).If we are not selling properties, it is the same as buying them at today's prices (excluding the impact of mortgage rate changes).