Commercial doesn't affect real estate. Types of crime, availability of high paying jobs, and social calm all effect sale price. Not all dollar generals are put in poor parts of town. If it is a high traffic road I would have to say otherwise. Step outside. If your neighbors are more apt to stare, yell, shout, cry, criticize, slack off, nit pick rather than wave, giggle, garden, with quiet and peace. You can kiss your home value goodbye.