If your monthly take home salary is around Rs 40,000, and your age is between 35 and 40, then you are eligible to pay EMI of up to 50 per cent of your net take home salary or Rs 25,000 per month for a period of 20 to 25 years. Since the current home loan interest rate is at the most 7.1 per cent p.a., you are eligible for a home loan between Rs 25 lakhs and Rs 28 lakhs. Hence, you will be able to buy a property worth Rs 28 lakhs and Rs 31 lakhs. 3BHK apartments in Joka, Kolkata is an example of such property. Its price starts from Rs 26.57 lakhs.