Taxes are complicated. The answer to your question will be different depending on your answers to these questions:
1. Did you sell at a gain or loss?
2. Was a form 1099-S issued?
3. How was the house used (rental; other person's home, vacation home, your home etc)?
4, What was the purpose of your ownership (help friend/relative get a house or as an investment)?
5. How is the other person related to you?
