As for historic data you can upload that into Quickbooks so you don’t lose it and it will give you the ability to track year over year profit.

@Logan Jorns , if you're making fairly low profit, then no it isn't worth it.

A family friend is financing a twin home building project and will receive a percent of the profits when the homes sell.

You can walk away after all selling fees with a nice profit, but I would not sell it right now.

Ideally I would like to use the profit to pay off some of my principal on current primary residence mortgage and use the rest for investing in a townhome that I can rent out...Thank you for your inputs!

Buuut, there has to be a set of criteria that make this setup a reasonable/profitable situation.

Thank you everyoneA few things to remember about Rentometer:1) The average and median prices they report also usually include a margin of error.

I am already way over budget and the bid number could eat all if not most of my profit at this point. 

I will promise the owners $1000 a month for 5 years and have permission to sub-lease and am keeping whatever profit I can make (say if rented for $1500). 

Then save the difference so that you can buy when you are living in a different market with better returns later or when you have researched another market well enough that you can buy a rental out of state and make a profit.