Is there a standard lien document in Singapore and if so, can I get a copy?

The creation of security interest over the borrower’s parcel(s) is covered under the User Agreement. With the borrower agreeing to the User Agreement, a security interest over the parcel(s) will be created in favor of the lender one there is a loan match. Please note that the borrower's parcel(s) is, and for the entire tenor of the loan will be, under our custody and will therefore result in a perfected security interest over these parcel(s).

No other form is necessary to enforce this security interest over the parcel(s).