30% is pretty standard unfortunately.

@Carlos Enriquez  cost of litigating this vs fixing probably is not worth it. and since you did fsbo ... what sales agreement did you use.. if its standard WA form there will be mandatory mediation in these events.. if you used a Stevens ness form maybe not. 

CLICK HERE These are professionals that voluntarily hold themselves to a higher standard.

We have been in construction our whole life so estimating isn't an issue, its just that we haven't built from scratch yet.Our main issue is that I hear people saying $180+ for a cost for a standard skinny home...which seems steep to me....so I am looking for any information that I could before getting started.

Typically comercial loans have an interest rate 1% higher then a standard mortgage.  

This would not be a standard add as a lot of homes in our markets do not have rain gutters, actually I would say 1/2 of the older builds do not.  

Andrey, there are standard form purchase agreements vetted by the NYS bar association that are commonly used.  

It seems as though they hold themselves to a higher standard by going through the certifications to get his endorsement.

My tenants just deposit into my bank account or they just ACH.Hmm, I'm beginning to see how all landlords stick to standard rules when it comes to these things.

In our county, we have a standard purchase contract that is generally recognized and accepted.