I agree though, if there is mold, the $300 is nothing compared to the remediation costs.Do you just always do a mold inspection no matter what?  

Single-hung usually next in line, then double-hung... casement/awning windows of comparable size are usually the most costly of the common window types.Be sure to pay attention to the egress needs - while a 2650 DH might meet egress, a 2650 casement may not (or it may need side pivot hardware).I could write a small novel on what to look for when buying windows... however, sleep beckons.

Mark Ferguson Haha, no, manufacturing is the very least you could compare it to.

I've got some ideas on how to compare this house with selling and putting a down payment on 2 other smaller houses as well.  

Maryland seems to have pretty low filing fees comparable to other states at $100.

I agree 70% rule is kind of simplification, but finally i see the main difference between flipping and building is that while flipping goes you earn money on buying with cheapest repairing, but while new development/deep rehab goes you earn money getting adding value for highest market price comparing of rounded properties in this location. 

I bought the house for $105k and many comparable homes in the area have gone for $120-135k the past 6 months.

At my purchase price, the GRM as well as $/unit (comparing apples to apples in terms of LL expenses) is right on par with the area, maybe about $5k below the norm. 

Any input anyone can give me I would appreciate, I know I'm in a small market but to me it's an advantage to help me find other investors as the buy in cost is so low compared to many areas. 

Since this is a numbers game, the only way you can answer the question is to do the following:Establish a relationship w/ a realtor winning to run some comparables for you showing the potential value if you convert from a 2 flat to a singleIf the values are not significantly hire than your mortgage then hold on to it as a 2 flatIf the values are significantly hire than your mortgage then get some estimates for converting from a 2 flat to a single.