Cutting off the runs about a foot away from the stack and then turn it out of the cast part. 

Three of the tenants are around market rents however one unit, is paying about $300 - $400 below market a month (market rent being approximately $1,550).The tenants in the below market rented unit have been there for over 5 years and have a senior citizen (I believe) and young child living in the unit.I am considering offering them cash to vacate their unit in order for me to rent it out at market rents, after probably making about $2,000 - $3,000 worth of improvements to the unit.I am wondering what do you deem is the right offer in terms of the amount I should offer them considering how much they're paying now and the general apartment rental market in Los Angeles.  

Canada with my first child on the way and ready to learn all that I can about real estate investing!!

I also got burned once with an outstanding child support payment that I didn't catch before I bought the property.

I just bought this 3 bed 1.5 bath 1400 sq. foot house in Decatur - nicer end of Decatur.  

Or even two siblings and a friend or a parent/adult child and a friend.Unrelated people have no bond to tie them, making the relationship easy to dissolve.

Three of the tenants are around market rents however one unit, is paying about $300 - $400 below market a month (market rent being approximately $1,550).The tenants in the below market rented unit have been there for over 5 years and have a senior citizen (I believe) and young child living in the unit.I am considering offering them cash to vacate their unit in order for me to rent it out at market rents, after probably making about $2,000 - $3,000 worth of improvements to the unit.I am wondering what do you deem is the right offer in terms of the amount I should offer them considering how much they're paying now and the general apartment rental market in Los Angeles.

If you are so far apart on price, you'll likely not be shooting yourself in the foot to be honest with the seller.I like Account Closed's advice.

I am self-employed making approx 35k a year and I have a great lender, I currently house hack a duplex, with 35k a year income and 400 a month in child support income, I can have up to $1426.16 a month in debt and be within the 43% DTI limit, the duplex I live in, the mortgage is in my husbands name with his income, and he can only have 1 mortgage with his income.

My fear would be to lose a foot hold that i currently have in such a great area, in trade for a 4plex that might be a step back neighborhood wise.