Which of the following is an indication of moisture issues in a building?

All of the listed indications—crumbling caulk, excessive paint peeling, and visible mold growth—point to moisture issues in a building.

Crumbling caulk indicates that the seal around windows, doors, or joints is failing. This failure can occur when moisture seeps behind the caulk, leading to deterioration and compromising its ability to prevent water entry.

Excessive paint peeling is also a sign of moisture problems. When there is too much moisture in the walls, it can cause the paint to lose its adhesion and peel away. Paint typically adheres best to dry surfaces, so when moisture is trapped under the paint, it leads to a breakdown of the paint film.

Visible mold growth is one of the most apparent indicators of moisture problems. Mold thrives in damp environments, so its presence suggests prolonged moisture exposure, which can be harmful to both the structure and the health of the inhabitants.

Since all these factors are signs of moisture-related issues, the correct answer encompasses them all, highlighting the importance of monitoring these indicators during a home inspection to ensure the integrity of the building.