If the economic situation in the area is unstable or worsening selling is your answer.

In fact, if not “righted” your situation could easily worsen.

Do I try to sell this house and property before building activity takes place across the road and traffic continues to worsen OR would my property be worth more if I wait till more development and commercial buildings to be put in?

Austin is also facing ever worsening mobility challenges without the added stress to the transportation system associated with HQ2. 

Maybe it will spark some idea and/or discussions.http://www.bloomberg.com/news/2014-05-28/homeseller-reluctance-worsens-u-s-inventory-shortage.html

If the market worsens, so what?

It's been feeling like this for a while but now the "experts" at BOA (probably from the Countrywide division) are weighing inBANK OF AMERICA: The most important segment of the housing market has peakedBusiness InsiderAkin Oyedele,Business Insider•September 24, 2018manhattan real estate housingmanhattan real estate housingMoreSpencer Platt/GettyThe top is in for existing-home sales, which make up 90% of transactions in the US, according to economists at Bank of America Merrill Lynch.They cite worsening affordability, higher mortgage rates, and price cuts as reasons sales are unlikely to bounce back after peaking in November.They no longer expect existing-home sales to contribute to the economy's growth.The largest segment of the housing market has peaked and will no longer contribute to the US economy's growth, according to US economists at Bank of America Merrill Lynch."

Logic tells me to fix them both since the leak will eventually exacerbate the problem...not a matter of if, but when.If I fix only the plumbing, the slab may react and worsen possibly since I am removing the source of the moisture that caused the issue. 

Ceterus paribus, Texas with no income tax, lower minimum wage, food, etc. could have lots of runway in housing prices in desirable locations especially if traffic continues to worsen making "another 2 miles" an extra 30-40 minutes of commute.

I slid a small plastic flower pot over them, but I ended up taking it off because I didn't know if plastic over them can worsen a fire risk, even though the wires are coated in plastic themselves?