Contacting a owner of vacant property near my home

[Ricardo Murph II]

I wanted some advice as a newbie. There is a home in my neighborhood that has been vacant for years. I have lived on my street for 7 years. I creeped me out because it was always maintained but I never saw anyone.  Thought some hermit lived in it. The guy that lived next door to it told me an old guy owned it and was saving it for his kids. A couple years ago the daughter (looked about 40ish) moved in for a few months then moved out again.  

The numbers:

• SFH ~1000 sqft it is probably 3/1/1 or 2/1/1 - this set up is common in my neighborhood
• Zillow shows home purchased 1994 $47K and ARV $114K. I just refi my home it appraised around that price. Mine is ~1100 sqft 2/2/2 so it is close.
• It could rent $1300 -1400/ month - my floor plan is on the zillow now for $1395

Gross Schedule

• Gross Schedule income $15600
• Vacancy allowance (3%) $468
• Tax $2200/year
• Insurance $2300/ year mandatory windstorm coverage
• HOA $175/year
• Lawn service $600/year
• Maintenance $500 year

Total Operating expense: $5775    38%

Net Operating income: $9357

The house is pretty well maintained the appraiser site says a canopy was added on the patio in 2015.  Foundation issues are common in this neighborhood which take 5-10K to fix. 

I think if I can offer $90K or lower or get him to owner finance at a higher price. It would be an awesome rental and easy to manage for newbie since it is close to home. I have access to about $20K cash pretty quick between 401K loan and savings. 

I live in Pearland, TX a suburb of Houston, TX. There is tons of growth and business investment in my area. 

His name, address and number is on yellowpages.com 

 On our personal finance we have gone frugal to pay off debt in about a year.  I can stop accelerated payments at any time and free up a good bit of cash. Should I contact him? If so how should I approach it?  Do you think I should wait?