1. It is advisable to carry out your due diligence before signing such agreement
2. Take out a search from the registration department through a registered search clerk to know if the property you wish to buy has been sold to any other party by the investor seller
3. Issue public notice in two local newspapers, one English and another Marathi, informing public that you are buying this flat from so and so investor and thus if any person has any claim or objection against the same
4. Get the builder and investor titles verified by a competent lawyer
5. Include an indemnity clause in the agreement in your favour