H.R.3725 - Federal Government - To amend the Real Estate Settlement Procedures Act of 1974 to require the submission to each borrower under a federally related mortgage loan of a one-page description of the essential terms of the loan.

Mortgage Disclosure Simplification Act of 2007 - Amends the Real Estate Settlement Procedures Act of 1974 to instruct the Secretary of Housing and Urban Development to develop and prescribe standard written forms stating the essential terms of a federally related mortgage loan, which lenders or mortgage brokers shall provide to prospective mortgagors.

Requires such disclosures to include: (1) a statement of terms regarding a federally related mortgage loan; and (2) a statement of basic easy-to-understand definitions or explanations of such terms.