When buying a mobile home, purchasing land provides ownership but can be more expensive, while leasing land in a mobile home park is cheaper upfront but the land is not owned. Some key factors to consider for a mobile home park include monthly homeowner's association fees, amenities like gated security and common areas, adequate land area and privacy, and securing a minimum three-year land lease to qualify for certain mortgages. Buying in a mobile home park can lower monthly costs and provide more funds for other expenses compared to purchasing land.