Ecological Succession — Definition & Diagrams

Imagine two situations. In the first, a person goes out to an empty plot of land. They bring in lumber and other supplies. Eventually, they build a house, or environment, that they can live in.

In the second situation, a person moves into an old house. The house is kind of broken down, but the person fixes it up and it soon becomes a house, or environment, that they can live in.

Which situation matches with which kind of ecological succession?