Parc Vista bought @ 410k in 2002 and sold @ 660k in 2009 = 61% in 7 years = 7% CAGR (compounded annual growth rate) = no big deal
Botannia bought @ 930k in 2010 and sold @ 1,650k in 2014 = 77% in 4 years = 15% CAGR = no bad but no big deal
Panorama bought @ 1,212k in 2014 and sold @ 1,310k in 2017 = 8.1% in 3 years = 2.6% CAGR = pitifully low!
Above figures DO NOT take into account stamp duty, lawyer's fees, renovations, maintenance, etc which will reduce the returns.
Just like in the stock market, timing is the most important - Botannia was 77% in 4 years whereas Panorama was only 8.1% in 3 years.
For real estate, you can use leverage aka DEBT to improve your returns, but if you read the market wrongly, DEBT can also make you bankrupt FASTER.