Prior to these neighbors, the unit above was occupied, and we never experienced any problems.We’ve spoken to management multiple times, but they’ve been completely unhelpful and have taken no meaningful action and even told us that we are making the noise up, inspite security having been to our apartment numerous times wittnessing the noise. 

If you've got a higher price rental deal (multiple units), with a LOT of equity in it (I like 50% and above for deals I'm gonna sweat over), and after refinancing my return on the equity position in the property is going to be 20% or above I'll consider it. 

Fixing and flipping, wholesaling, and working with cash lenders and contractors is a powerful combination, and it’s clear you’re creating value from multiple angles.I’d love to connect and explore potential collaboration opportunities.

To qualify, taxpayers must meet specific criteria demonstrating that they are real estate professionals who materially participate in their rental activities.How to Navigate the Rules:Step 1: Identify your real property trades or businessesHere is a list of activities that are considered to be a real property trade or business:RedevelopmentLeasingConversionConstructionReal property developmentReconstructionOperationRentalBrokerageManagementAcquisitionIf you participate in multiple of these activities, you may be able to combine them making it easier to meet the material participation hour requirements.Step 2: Demonstrate material participation in real property trades or businessesThere are seven tests to determine if you demonstrate material participation.

Quote from @Bruce Woodruff: I agree with having multiple options.

Revisiting this post, I would strongly recommend any service-based business where you can buy in at a low EBITDA multiple.

My goal is to spread my funds across multiple investments to grow my portfolio while keeping my down payments as low as possible.

This doesn't pass the sniff test.

SF's market is still very nuanced and strong due to the low inventory and demand here, homes still going above ask with multiple offers. 

There is also multiple crypto currencies, which increases supply and guarantees some winners and some losers.