paint the house家にペンキを塗る means “to paint the house.” The て-form 塗って often connects to another action or request, such as 家にペンキを塗ってください (“Please paint the house”).
JA: 家にペンキを塗って、見違えるほどきれいになった。
EN: We painted the house, and it became so beautiful that it looked completely different.