Exhibit (a)(4)





July 6, 2007

TO:                  UNIT HOLDERS OF SECURED INCOME, LP

SUBJECT:             EXTENDED AND INCREASED OFFER TO PURCHASE UNITS


Dear Unit Holder:

We are amending the Offer to Purchase and related Letters of Transmittal sent to
you on June 1, 2007, (the "Offer"), which was made by the Purchasers identified
in the Offer. The Purchasers are offering to purchase up to 196,873.8 Units of
limited partnership interest (the "Units") in SECURED INCOME, LP (the
"Partnership") at the increased Offer Price of:

                                 $9.00 per Unit
                                 --------------

The Offer will provide you with an opportunity to liquidate all, or a portion
of, your investment in SECURED INCOME, LP without the usual transaction costs
associated with market sales or partnership transfer fees. Reasons you may wish
to sell your Units include:

     o    The contract for the sale of the Fieldpointe Apartments was terminated
          (AGAIN),  and the general partner is currently  trying to remarket the
          property.  This may take quite some time. The general partner has been
          trying to market  the  property  for at least 20 months and has yet to
          complete the sale.  We do not know why sellers keep backing out of the
          purchase.

     o    If you sell your Units to us, you will  receive  the entire  $9.00 per
          Unit, less any distributions (and none is expected).  Limited partners
          who were not  residents of New York had  approximately  $4 per Unit of
          the recent distribution withheld for New York state taxes. If and when
          the Fieldpoint  property sells,  the  Partnership  will be required to
          withhold taxes from non-residents of Maryland, reducing the net amount
          of any potential distribution. Thus, selling to us eliminates the need
          for you to file a Maryland  tax return for 2007 if the sole reason you
          would is because of your investment in the Partnership.

     o    The relative  illiquidity of the Units resulting from the absence of a
          formal trading market makes the Units difficult to sell.

     o    If you sell your Units to us this year,  the 2007 tax year will be the
          final  year  for  which  you will be  obligated  to file a K-1 for the
          Partnership  with your tax  return  and for  which you incur  fees for
          having this investment in your IRA or retirement account.

After carefully reading the enclosed Offer, if you elect to tender your Units,
mail (using the enclosed pre-addressed, postage paid envelope) or fax (then
mail) a duly completed and executed copy of the Letter of Transmittal (printed
on purple paper) and change of address forms, your certificate (this is REQUIRED
FOR TRANSFER), and any other documents required by the Letter of Transmittal, to
the Depositary for the Offer at:

                         MacKenzie Patterson Fuller, LP
                               1640 School Street
                            Moraga, California 94556
                            Facsimile: (925) 631-9119

If you have any questions or need assistance, please call the Depositary at
800-854-8357. If you have already tendered your Units, you do NOT need to send
in another Letter of Transmittal; you will automatically receive the higher
price.

This Offer expires (unless extended) July 26, 2007.