Best of luck...
The only issue would be when the property is sold or refinanced. Then your parents would need to be removed from Title. With a refinance you would just put them back on after the transaction was recorded.
Happy funding, Rudi
1. A gift letter - must include the $ amount of the gift, the donor's name, address & telephone number, identify the property address (in most situations), the relationship of the donor to you, and indicate there is no expected or implied repayment of the gift.
2. Document the withdraw from the donor's account - copy of the wire confirmation or cancelled check is most common, sometimes a lender will want a 30 day account history leading up to the funds transfer from the donor
3. Document the deposit into your account - copy of your bank statement showing the amount showing up in your account as "available funds".
The donor's do not need to be U.S. Citizens or have even set foot in the U.S., however the funds do need to be verified in the above manner, in English or in the foreign language accompanied by an official U.S. English translation (the gift letter + documentation of funds going into your account must be in English, their bank statement may be in the foreign language with official translation).
Sometimes instead of both #2 & #3 - the funds can be wired directly from the donor to the escrow/title company at closing and then verification is taken care of by the wire confirmation the escrow/title company provides the mortgage lender's funder (the person who will fund your loan) - and none of the extra paperwork is needed (funds going into your account, etc.)