As a foreign investor, I can get financing up to 80% for the purchase of real estate, so the biggest problem for a more serious project is down payment if you have a solution for down payment, please suggest me. 

I had specifically asked for numbers including mortgage payments and they emailed to me.

Quote from @Yaroslav Shtogun: Hello Community,I am seeking advice on the following real estate situation:I’m in the process of purchasing a double lot property (100x100 in an RS-50 zone) that includes a 1,200 sqft wood-frame house and a 640 sqft detached garage.

I currently have a client looking to purchase their first investment properties here this year as well as in other Midwest markets that are also showing some of these same factors coming to light.Another thing to consider is that OKC is home to nearly 20,000 military / government workers with Tinker Air Force Base and the Army and Air National Guard posts there. 

That should really be the deciding factor...is it necessary and a large enough project to include the permit process?

Yes, there are definitely 15% down options available for investment property purchases!

When I am looking for a new investment property and am strapped for cash, I typically look off-market and try and find something that can a seller is looking to sell that needs minimal repairs to be rent ready and the purchase price is 80% of the ARV this way I can use private money to buy in cash, do the repairs needed then refinance on a DSCR loan and pay off the private money loan. 

I have 2 SFH, both purchased using house hacking.

Can you give more details on your numbers, purchase prices, rehab costs, time to complete rehab, ARV, monthly rent?

You want an investment that pays for itself, including mortgage, taxes, insurance, maintenance, and even some money set aside for a reserve to cover vacancies and capital expenditures.