Let's say you have no 4-plexes comps in the area but there are duplex comps:1) 2000SF duplex #1 sold for $200,000 -> unit size: $1000SF2) 4000SF duplex #2 sold for $300,000-> unit size: $2000SF3) 1200SF duplex #3 sold for $150,000-> unit size: $600SFlet's assume to make things easier they are all the same grade of quality and they are all leased to tenants at market values.Duplex #1 sold for $100 per SF and $100K per unitDuplex #2 sold for $75 per SF and $150K per unitDuplex #3 sold for $125 per SF and $75K per unitNow you have numbers you can compare to your 4plex.

In an appreciating market like we have this might work for the right person as long as they do quality work and want to be the end buyer.

In many lower quality areas the prices have not increased much.  

It is still very important to make sure you have a quality contract and have hired someone capable of finishing the job.  

Nikolas Ferreira how do you figure who is the builder of a house , and where do you find information about the quality of each builder?

Chicago, Indianapolis, Kansas City.Based on reasons I list out in here (quality of market + quality of turnkey provider)-https://www.biggerpockets.com/renewsblog/2015/12/2...Those 3 are my favorites right now.

If not have them give formal notice now allowing you 3 full months to find good quality replacements that are able and willing to pay market rent.

I'm in the Denton market and depending on the quality and age of the homes those seem like fair prices. 

Week to week will appeal to a lower quality of tenant, AND will put you at risk of needing to find a tenant say during Thanksgiving or Christmas right when it is most difficult to find tenants.You will find out one of your biggest expenses will be turning over the property to a new tenant. 

But if you are looking at a larger than normal down payment or an all cash transaction, it is an area that you will be able to easily fill with quality tenants and have an asset that is likely to increase in value over time.