LandmarkLandscapes

If you do go the pressure washer route, use  low pressure, maybe below 700 psi. Also, use wide spray, because narrow high-pressure sprays might damage the surface. Good luck! 

I am planning to put in bamboo along my driveway to block a rather plain wall in my back yard. Before you freak out, remember that there are dozens of varieties of bamboo. They grow to various heights, from 10-12 feet to over 50 feet (these might be good for the 3 story townhomes). You can get "clumping" or "non-clumping" varieties. The non-clumping bamboos are the ones that do not go crazy. The shoots come out of a rootball and do not put out runners. You can keep it in a fairly small place.

Here is a website to give you an idea what you can do.

http://www.bamboohq.com/clumping-non-invasive-bamboos-1/

Bamboo will give your yard a somewhat tropical look and feel, but since this is Houston, there is not a thing wrong with that. Plus, it grows quickly, so the townhomes will be hidden fairly quickly.

Agreed. Bamboo is a beautiful choice.