Charlie Munger emphasized the importance of investing in landscaping over interior renovations to increase home value. He referred to neglecting landscaping as building malpractice and cited his own success story from the 1960s, where an investment in landscaping contributed to a 400% return on apartment investments near Caltech. Studies support Munger's belief, showing that landscaping can raise home values by up to 30%. Munger's partner, Warren Buffet, acknowledged Munger's preference for investing in landscaping.