Each address would generate a postcard to my mailbox.During the last year, I received four or five postcards/letters a week from wholesalers asking if I want to sell my rental properties.Over the last two months, I receive at least one phone call a week from wholesalers pestering me about if I want to sell my rental properties. 

We are about to close on our first sale (approx $7500 profit) & I've come across a landlord who's retiring.

That is your long term solution to generating quality inbound leads over time. 

I know which is very high, my property is listed as non residential as per water company since meter is 8in, currently I am paying as a landlord full monthly water bill and all my profits this bill is eating.I ask the water company my property has submeters if i make those active is the water bill going to reduce by making the property as residential?

Generally you want higher income two years before you apply for financing, so you could change your tax strategies depending on which years you need a loan.The most interesting real estate tax tactics to me are the 1031 and cost-segregation depreciation.Also, as a retail business owner, you can qualify for some SBA financing that will allow you to owner-operate commercial real estate to where you could run your store in a building while renting out some of it at the same time to generate that income.And for commercial you can use the income from the target property to help your income.

If you own a 2 flat or larger building you can make a great profit using Airbnb.

I would be profiting about 200-300 every month.

I've now sold off all of those at handsome profits. 

Also, they don't get as excited about REI loans, as they are more typically looking to help the Small Business Owner get off the ground (e.g. a Donut Shop, or Lavette's Account,...) at least that's what their rep told me.As for that as for that being a REI strategy, it's viable as long as your numbers are solid and you can profitably repay the loans. 

Tax free profit is sounding pretty good but that's obviously a 1 time thing and we already have cash sitting on the sidelines waiting for the next project.Thoughts and ideas would be much appreciated.