I am looking for a data source that will tell me the lender, mortgage
product, rate, close date, and identify the property for recent
residential mortgages transactions in the United States.

There are commercial data sources available that describe mortgage
transactions but I have been unable to locate product or an actual (as
opposed to an estimated) value for rate, e.g. www.dataquick.com.

One promising source is data used to value a large loan portfolio. 
Third party data brokers may collect data about individual borrower?s
loans from large servicers, pool it together, and sell it back to
these large financial institutions to manage their loan portfolios. 
This data is essential for predicting repayment rates and other
borrower behavior that impacts the value of the servicer?s portfolio.

Here is the data that I?m interested in:

Lender:  the bank that funded the loan.

Mortgage product:  30 year fixed, 5/1 ARM, 3/1 Interest Only, Pay
Option ARM, etc.  (Note:  product is different than type which
typically denotes only if the mortgage is fixed or variable.)

Mortgage rate:  4.5%, 9%, etc.  The interest rate on the loan.

Closed date:  The date the loan was closed or funded.

Identification:  First choice:  property address.  Second choice:
borrower name.  Third choice: some very small piece of geography like
census tract.