Based on the info in your post, my recommendation would be to turn these assets into well oiled machines and max out their NOI.

There is a free version that allows you to do the planning, analysis and estimating that I would recommend you try before deciding to purchase the full version to see if this meets your needs. 

Any book recommendations will be very much appreciated. :) Hi @David Gotsill, @Tom Wong, @Benjamin JonesI am in Kanto and investing in Hokkaido.Agree with the comments PR and language are barriers to entry.

Highly recommend (I require) collecting first month's rent prior to handing over keys.

@Jay Fayz for SFR (1-4 family) Classifications are mostly opinion-based.Not aware of anyone tracking eviction rates, except Evictions Lab nonprofit that doesn't like landlords.Here's some info that might helpt:---------------------------------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

My recommendation would be to engage an investment property focused realtor (not a general residential realtor) and let that person guide you through the process from pre-qualification to market/property valuation and selection. 

If you want to violate them thats your call. but since your asking sounds like you want to follow the laws which I support and would recommend.

Estoppel letters are definitely something I would recommend for commercial properties.

I recommend reaching out to 2-3 PMs and then using tools like Zillow and Rentometer to get a full picture.

Again, definitely consult with a CPA - our team has a few recommendations if you are interested and I can DM you as well.