Upgrade light fixtures, get a nice mirror and distract the eye with some bold staging items (towels, rug, maybe a faux plant). 

you can buy compression fittings at lowe's or home deport for this purpose.http://www.lowes.com/Pipe-Fittings/PEX-Pipe-Fittin...you can use them with all different pipe and tubing types, as long as the diameters match up.My recommendation could be to use PEX, it's more resilient, and easier to install (bendy, hooray).  

There are only two times in life to plant a tree.

@David WaddletonHi David, just outside of Pittsburgh....the Tri-State area just recently figured out that there is more natural gas there than in the Middle East, and Shell Oil Co just opened a HUGE cracking plant.

Maybe it helped that they were taking care of the house while they were staying (mowing lawn, watering plants and trees, etc.)

And quite frankly, now I'm scared.John Taylor Gatto, a retired school teacher and activist critical of compulsory schooling, asserts, "We could encourage the best qualities of youthfulness – curiosity, adventure, resilience, the capacity for surprising insight simply by being more flexible about time, texts, and tests, by introducing kids into truly competent adults, and by giving each student what autonomy he or she needs in order to take a risk every now and then.

You go down to the big box store and in the garden department, they will have big rolls of different grades of black plastic ground cover.Buy something with UV protection and lay that on the ground and cover with the rock you want, or with bark chips.Plain rock is pretty ugly, so you might want to add a few small beds of drought tolerant plants or cactus.Rock isn't cheap and it's hard work to get it spread without destroying your plastic ground cover.

The shrubs and wooden plants I see are bare.

I know landscaping can add some nice curb appeal, but what good is it if the plants die or they are under snow when it hits the market in late January/early February?

It used to be an old shop that sold plants, here are the details I have received.. -11,250 Sq ft lot-2130 Sq ft building-built in 1946-1 green house he made into a 2 story building the other green house has broken glass and hail damage.