How much value does a shared driveway take off a house?

Shared driveways typically get discounted by buyers because of the added maintenance coordination, liability questions, and reduced privacy compared to a private driveway, and that discount shows up in what similar homes with shared access actually sell for nearby. Appraisers and agents building a comparative market analysis account for it by pulling comparable sales that also have shared access, rather than applying a flat adjustment. The exact impact varies by street and by how the shared-use agreement is written.