He assumed BP was listing aggregator like zilow or redfin. 

Aggregation Election.You can elect to aggregate all of your real estate activities into a single activity for purposes of meeting the material participation requirements.

I've recently started building a software application that allows for behind the meter aggregation for both electrical and gas utilities.

(Most notably, they've gotten REPS aggregation all mixed up in the past.)Based on the regs seems that:- 1245 ordinary income recapture applies to some forms of property that qualify as "real estate" for 1031 exchange purposes- 1245 recapture on such "real estate" overrides 1031 deferral such that 1245 depreciation is recaptured to the extent there's a trade down in 1245 property in the exchange@Heidi Kenefick There are many additional mitigating considerations worth discussing in conjunction a real estate tax accountant.    

Though, I would consider tweaking your goal. 167 properties at $500/month is $83,500 a year in cash flow and much easier to do on larger deals than aggregating smaller ones.Instead of asking where you're going to find the money, I would be asking where you're going to find the deal(s).

Are there other SaaS platforms folks use to aggregate views for their own use?

You can make an election under IRC Section 469(c)(7)(A) to treat all your rental real estate interests as a single activity -- an election to aggregate them all.

You can end up in an odd spot where these previously disallowed losses are disallowed nearly permanently until either a) you are no longer a real estate professional and you un-aggregate your rentals or b) every single one of your rental activities is disposed of.I have one client right now with some material passive activity loss carryforwards, that the decision was made to wait to make the REPS related election until they utilize these loss carryforwards, so they don't become trapped. 

Comparing Stessa with other financial tools like Mint and Monarch Money, which also use third-party aggregators without glitches, Stessa's problems are more noticeable.

So these bridge loan is acquired through CLO with aggregated rate of 7% ; their profit spread is 1.7%; leaving 8.5-9.0% total interest to be paid by the GP/LP syndicators.