Buy in a neighborhood of owner-occupied homes. The highest possible market value is typically obtained in a market of homes where homeowners reside. That's because homeowners will pay a premium to live among other owners.
Sometimes you can easily pick out the rental house on a street where mostly other homeowners live. Tenants don't always maintain the yards in the same condition, with the identical meticulous attention to detail afforded by homeowners. The home might show deferred maintenance, because tenants sometimes don't report problems to the owners for fear any repair costs could cause an owner to raise the rent.