I am looking to cash out a duplex in SW Florida

[Ruth Ann Morris]

I own a duplex in SW Florida.  I owe about $15000 on an equity line.  The place is worth at least $100000 ( I was offered an all cash deal to sell it for that amount).  I am not interested in selling, but I would like to pull about $80000 out of the place ( pay off the equity line and net $65000) to use for additional properties.  I have read conflicting reports on how easy/hard that is to do as well as how much it could cost.  I have retirement income and own 3 duplexes and a single family home.  I have mortgages on all the other places ranging from 50% to 75% of value.  Rental income  is covering all expenses plus giving me some cash.  What is my best route to getting money out of the place to buy one or two more rental properties with minimal cost to me?