The eleventh house is the 11th from ascendant when counted anti-clockwise. If the master of 11th house is present in exaltation or in own house, specially if in center (1,4,7,10) or in trine (1,5,9), it will give native good results. The 11th house is also called the Labh Sthan (the house of your gains/earnings). The eleventh house signifies profit, income, wealth. It represents the native's projects, his friends, and his protectors. It describes the nature of his friends, his group activities, and the place he occupies within the group.
The 11th house mostly signifies the following:
1. Gains in general
2. Income, profit, wealth earned through job.
3. Success in undertakings, prosperity.
4. Elder siblings
5. Dawn of fortune
6. Abundance, possession of desired objects
7. Legs, left ear, ankles, alternate location of a disease (6th from 6th) and recovery from illness.
During the dasa, antardasa of the Lord of 11th house, you will see the above significations of 11th house, taking prominence in your life. All the planets, when placed in 11th house, tend to give good results to the native related to the house they rule.