dang ONLY $160 for the building permit ! That'd just cover the 13% TAXES I'd have to pay for the permit up here.
I got around that by building 9by12 sheds ( max without permit,plans, engstamp, etc...)
		
		
	 
Wow!  What part of the country do you hail from? 
Actually a bit of story as to the 160. I am not very happy about it but understand the reasoning.  
My county's permit fee for what they call a accessory building the size of what I am putting up is $125.   Because I have no other structure suitable for living they require I sign a affidavit that says I will not sleep, cook, or other activities considered living in this building. Even sleeping for a weekend is not allowed. The affidavit is then notarized and recorded along with my deed. 
The additional expense is for the recording of this affidavit. 
I know that the reason for this is to keep all of our properties values stable. The zoning office person told me I would be surprised how many people put up a building like mine and before you know it a family is living full time in the building. 
On the plus side my permit was approved this morning which seemed pretty quick considering I was at the courthouse on Monday. 
And a quick picture that represents a sizable portion of my retirement savings, considering the price of lumber! LOLOL