Let us break this down 1. You buy a property (for rental income) 2. After some time the property value goes up 3. You decide to sell the property 4. Your property makes you some money #moneyface 5. You look and identify other investment properties within 45 days 6. You use the money to buy a new property within 135 days after that (Total 180) 7. Finally exchanging the two properties - Now lets piece...