If you have more than one house and are filing your tax return, do not commit the common mistake of choosing the wrong ITR form. If you own several houses, you are not eligible for the ITR 1 form. The number of houses you have will determine the ITR form you should fill.\r\r\rYou might have to file ITR 2, 3, or 4, as the situation may be. Furthermore, you will have to present the details of each of your houses, including address, return of income, ownership percentage, and PAN details of co-owners.