Yes, Buying a flat in Mumbai is a good investment. There is no greater investment on earth than earth.2. There are many builders and brokers, who might be offering you a good deal, price, amenities, payment scheme, etc, but keep your focus on the location, floor plan, infrastructure, nearby environment, and public conveniences available. Buying a home with Cash, Loan, or Partial loan. Based on the following factors, there can be 6 scenarios (Probability) 1.Home for Stay with Cash.Stop procrastinating, go buy your home. This will bind you for your next 20/30 years to the loan repayment.