Parents helping their children invest in their first home is certainly not a new idea. Some elect to co-sign on the mortgage with the children.
Give or lend money
Others either give or lend money for the down payment.
Title insurance is often required to protect the lender against loss if a flaw in title is not found by the title search made when the house is purchased.
Protect the lender
You may also get an owner's policy to protect yourself.