I wish I got started when I was your age.

My gut feeling is it's going to cost around $4,000 to repair and has been there for ages.

I started at age 20, dead broke with no experience but hungry with lots of time on my hands. 

I think another factor here in determining whether its a good investment is your age and your goals. 

In my eyes, everyone is truly soon-to-be accredited, my goal after meeting Dave at age 22 was to be accredited by the age of 30 (income and net worth) and if I stay on track I will be!

For a rule of thumb, replacing a commercial boiler can range anywhere from $20k to $150k, depending on the size, age, and efficiency.

Quote from @Dennis Bragg: Hey Josh, thanks for jumping in with such a bold approach.. it’s not every day you see someone your age pushing for a luxury twist on a single family rental.

My main goal is it be able to retire at age 40 from my main job and work entirely on my real estate portfolio.

BTW there is a free trial and the Starter monthly plan is $119.It also allows you to search through consumer information such as property owner "credit worthiness," Credit card usage, buying power, age, language, family members in the house, and many other fields that are above and beyond property characteristics, which is unique.

The biggest factors, from what I can tell, are age and rebuild cost.