If you are getting financing for your home from a financial lender, you will be required to purchase mortgage insurance. If you are affluent enough to escape having to deal with a lender, you can avoid paying for title insurance. You can rely on your real estate attorney to check for claims of title or liens against the building site. The big downfall is claims can be made on your property after your house is erected.
For example, you have investigated the property. You are sure there are no liens or claims made on it. You build. Years later, a relative of a former owner claims fraud. Perhaps there was a deed signed and later fraud is charged.