Attractive landscaping can improve curb appeal and marketability, but the amount spent on landscaping does not automatically translate dollar-for-dollar into property value.
Cost is not the same as market contribution
Appraisers analyze how buyers respond to a feature in the relevant market. Elaborate gardens, water features, hardscaping, or highly personalized outdoor improvements may be valuable to some buyers while others may view them as maintenance-intensive.
What tends to matter
Condition, usability, overall site appeal, outdoor living functionality, privacy, and how the landscaping fits the property and neighborhood can all influence buyer reaction. The market may recognize some contribution without supporting the full installation cost.
The same principle applies to many home improvements: value is based on market evidence, not simply what an owner spent.