I know my comps and my markets very well, I have a great construction ability, and I sell well, so my comfort level is based on my personal experiences with real estate, and my personal expertise...

I do have experience with both flips and rentals for multi-family and single family so that should definitely be a plus going forward for my business partner and I as we take our business to the next level of investing.

So, it would help to know:- where you are- where you intend to invest- what your comfort level is investing here in the US, if that's your plan

Understanding the neighborhood and the level of upgrades it can sustain.

The carpet has been soiled and they hired a carpet cleaner, but some of the spots are coming back. the wood floor on the first level has also been scratched and their is a slight urine smell.

After that, I kept my expenses lower than my income, reduced my workload to human levels, took many small trips, several large trips and cared for my grandparents until their passing. 

If you don't ask for too many documents (lenient screening process) you can find a tenant way faster than if you ask for things like; credit score, employment verification, pay stubs, tax returns, bank statements, etc.

Building bigger faster is much easier to do with leverage, but it all depends on what your goals are as an investor.

I tell prospective renters, "The sound travels very easily between levels.

@A Xiong I don't know your experience level, but based on the fact you asked about "how to find renters", I'd say your first move is the read a real estate investing book such as 'the book on managing rental properties' by Brandon Turner.