Many homes back up to commercial fringe areas. Not all buyers are interested in homes in that border commercial areas, schools, etc. but savvy buyers will weigh all their options. Typically there are natural barriers or fences installed to separate commercial properties from residential neighborhoods. Planting additional shrubbery along your property line could definitely provide more privacy and even absorb noise from the neighboring site. You are not alone...Lynndale also is a neighborhood with homes backing up to commercial sites. Many factors are influencing today's market....not just location. Doesn't sound like you are ready to sell so keep your finger on the pulse of the local market by talking with a real estate agent periodically to find out what's happening so you can prepare properly to sell when you are ready.