The benefits and well-being associated with landscaping are numerous and capable of creating an overwhelming impact on the quality of human environment. Therefore, this study evaluated the impacts of landscape planning on environmental quality in Ibadan, Oyo State, Nigeria. Systematic sampling technique was used to select 97 residential houses accounting for 8% of the total houses in Old Bodija, while 67 residential houses representing 10% of the total houses in new Bodija estates were selected for questionnaire administration; therefore, 164 residents were sampled. The impact of landscape planning on the environment was categorized into physical, socio-cultural, psychological, economic and environmental component. Findings established that landscape planning has Impact on all the components of the environment, this was revealed by the result of the Relative impact Index (RII) producing the indicators that are mostly influenced by landscape planning (Physical components (parking facilities RII=5.80 and Dev +0.39), Socio-cultural (religion RII=5.09 and dev +0.09), psychological (interaction RII=5.89 and dev +0.43), economic (property value RII= 5.88 and dev. +0.50), environmental (air quality RII=5.78 and dev. +0.60). Therefore, the positive impacts of landscape planning on the environment outweighed the negative impacts and thus creating an aesthetic pleasing environment for human habitation.