Know you were mentioning the Western Shore for your desired location but should you wish to try the other side of the Bay, Piney Narrows Yacht Haven on Kent Island offers a nice environment for living aboard.
First you get a designated parking spot with your slip. We loved that. Second, the heads are large and private, with AC and good heat. There are the typical fuel, pump out, pool setting amenities, but you also have a locked gate to help secure the grounds. If you don't want to go out, you can sit at the club house and watch the traffic go by the narrows. Depending on the insulation in your vessel, you may hear the bands at Red Eye's on weekends. (we did not) The staff is helpful and prompt. The harbor is a snug, weather protected setting.
The Narrows offers lots of places to eat, shop, West Marine store a half mile away, There is a wonderful bike and walking trail that crosses Kent Island, goes by the public library and places for ice cream. The Safe Way grocery is newer and huge with a wonderful selection.
There seemed to be a bus service that collects folks under the bridge at Kent Narrows so you can walk to catch the bus to DC.
Kent Narrows lets you depart North or South for many interesting sailing locations. Certainly, the narrows can silt in and dredging is key to living there and sailing out of there happily. If crossing the bay bridge (that did just have an increase in the toll) is a problem, this would not be a place to consider but if you can telecommute or are retired, it is well worth a look.
s/v Tango, Cabo Rico 34