The real estate industry is most likely to be an example of Perfect Competition.
Perfect competition exists where there is no single big player in the industry (monopoly) and neither are there a small group of companies that control a large share of the market (oligopoly)
In the above example, with different kinds of local and regional companies, both big and small, it shows that the real estate industry is varied, with different kinds of services offered and no single company dominating the market.