Registering a house and plot involves legal and financial processes to ensure that the ownership is properly transferred and recorded. To make the registration secure, here are some steps you should consider:

1. Title Search: Before purchasing a house or plot, conduct a thorough title search to verify the property's ownership history. Ensure that the seller has the legal right to sell the property, and there are no disputes or pending legal issues related to it.

2. Engage a Lawyer: Hire a qualified real estate lawyer to handle the legal aspects of the transaction. A lawyer can help review the documents, draft or review the sale agreement, and ensure all legal requirements are met during the registration process.

3. Sale Agreement: Prepare a comprehensive sale agreement that includes all the terms and conditions of the sale. This agreement should be drafted with the help of a lawyer and signed by both parties (buyer and seller) to avoid any future misunderstandings.

4. Payment Safety: Use secure payment methods for the transaction, such as bank transfers or checks. Avoid making cash payments, as they may not be traceable and can lead to complications.

5. No Objection Certificate (NOC): Obtain an NOC from the relevant authorities, ensuring there are no dues or violations associated with the property, like outstanding taxes or non-compliance with building regulations.

6. Encumbrance Certificate: Request an encumbrance certificate to verify that the property is free from any financial liabilities or pending mortgages.

7. Verification of Building Approvals: If it is a constructed house, ensure that all necessary building approvals and permits have been obtained.

8. Physical Inspection: Conduct a physical inspection of the property to check for any structural issues or discrepancies with the property's description.

9. Registration Process: Complete the registration process at the local sub-registrar office, following all legal requirements and paying the necessary fees. Make sure to obtain all the relevant documents and receipts.

10. Transfer of Utilities: After registration, ensure the transfer of utility connections (electricity, water, gas) to your name to avoid future complications.

11. Insurance: Consider getting property insurance to protect your investment from unforeseen events like fire, natural disasters, or theft.

12. Community Verification: If it's a plot in a housing society, verify the credibility and legitimacy of the community or housing society to ensure there are no issues or disputes related to the land.

Remember, real estate transactions can be complex, so it's essential to seek advice from legal and financial experts to make the registration process secure and hassle-free.