Also found this in a "survey" of md law-- doesn't mention any signature requirement.
4. Financing and Commitment Agreements — Primary Residence Liens
Consumer loans secured by first liens on residential real property occupied by
the owner as his or her primary residence are subject to additional
requirements.
152 Only persons subject to licensing under the Mortgage Lender
Law must comply with these requirements.
A licensee who offers to make or procure such a loan must provide one and
perhaps another written agreement, depending on the circumstances.
A financing agreement must be signed by the licensee and provided to the
loan applicant within 10 days of application. The financing agreement must
include: the term of the loan; principal amount of the loan; an explanation of
the type of mortgage being offered; the rate of interest that will apply to the
loan and, if the rate is subject to change, or is a variable rate, or is subject to
final determination at a future date based on some objective standard, a
specified statement of those facts; the points, if any, to be paid to the lender by
the borrower or the seller, or both; and the term during which the financing
agreement is to remain in effect.
If none of the information required in the financing agreement is subject to
change or future determination during the term of the financing agreement,
that agreement will be a final and binding agreement between the parties (i.e.,
will be a contractually binding offer to make a loan and acceptance of that
loan on the terms stated in that agreement). However, if any provision of the
financing agreement is subject to change or future determination, a second
written agreement, called a commitment, must be provided by the licensee.
The commitment must be signed by the licensee and provided to the borrower
at least 72 hours before disbursement of the loan proceeds. The commitment
must include: the effective fixed interest rate, or the initial interest rate that
will be applied to the loan; and a restatement of all remaining unchanged
provisions of the financing agreement. The commitment will be a binding
agreement as to the terms of the loan being extended to the borrower.153