You may want to consider doing something other than yellow letters since many investors are using that letter style.  

That gets questionable when there are only a few homes that have sold in the area in the past year, and the sizes, styles, conditions, and prices are all over the place.Regarding the area, even though Frederick is relatively close to DC & Baltimore, many people around here consider Frederick County & Washington County (Hagerstown) to be fairly rural... even considering the cities to be more like towns, at least compared to the the immediate DC/Baltimore suburbs.  

You have no obligation and neither does the environmental company have, unless it is obvious that there is the scent and oily appearance, then I think the company has the obligation to report.  

The average listing price for this size in this area is $130,000 for the same size same style.

Of course, this all depends on one's learning style.

Woodcroft is always a safe bet but many of the houses are a dark/rustic style that is hard to update. 

I had an agent yell at me because the "studio front unit" was appraised as a commercial "diner-style" storefront, instead of calling the property a triplex as she wanted.

I know of a local that rents out an apt in a hard hard area where we live but the tenants are more afraid of him than vice versa.... not my style.  

Difference is I only have to satisfy myself, no investors.Right now I am his only option so I have that advantage and I intend to make him pay for his mismanagement style or walk away.

If you can't afford a duplex then your next choice would be larger style 3 br home and rent out a room or 2, and still live in the house yourself.