I am considering buying a house in Baltimore county that likely has a bathroom built without permit,it is advertised as 2 bath but in the county records it shows as 1 bath.Is this common in Baltimore county?

Your area may not permit you to do both.  

Rent Breakeven Horizon: Full Weight (~5.33 Points)Note: The “breakeven horizon” is defined by Zillow as the point, in years, at which buying a home becomes less expensive than renting the same home.Share of Young Homes: Full Weight (~5.33 Points)Note: “Young Homes” refer to housing units built between 2010 and 2016.Building-Permit Activity: Full Weight (~5.33 Points)Note: This metric measures the number of unit permits pulled per 1,000 residents.Affordability & Economic Environment – Total Points: 20Housing Affordability: Double Weight (~5.00 Points)Note: This metric measures home price as a percentage of income.Maintenance Affordability: Full Weight (~2.50 Points)Note: This metric measures maintenance costs as a percentage of income.Population Growth Rate: Full Weight (~2.50 Points)Job Growth Rate: Full Weight (~2.50 Points)Unemployment Rate: Full Weight (~2.50 Points)Underemployment Rate: Full Weight (~2.50 Points)Median Credit Score: Full Weight (~2.50 Points)

are you referring to permits you need for demolition?

Palm Desert stopped issuing new permits and will sunset all existing permits on non-owner occupied rentals in 2019.

in a town with no building permits or codes and  after 1 voice message same day?

The appraiser has indicated to me that he not only plans on writing his report to illustrate a 2 BR, but also that he will reduce the square footage by 30% due to the non-permitted additions.

were permits pulled converting a 3/1 to a 5/1I've heard horror stories of people having to convert a house they bought back before they could get permits to do additional workyou say turnkey, but with section 8, it usually isn't turnkey. if you don't want to share publicly, PM me an address and i'll let you know what i'd pay and expect as ARV based on the location, comps, and images. 

They run about 30k a unit and then there are other various park and permit fees. 

I went before the town board for permits and am by the book.