UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 12b-25

                         Commission File Number: 0-24600
                           NOTIFICATION OF LATE FILING

(Check One):      [X] Form 10-K    [_] Form 20-F    [_] Form 11-K
                  [_] Form 10-Q    [_] Form N-SAR    [_] Form N-CSR

                  For Period Ended:  December 31, 2006

         [_]      Transition Report on Form 10-K
         [_]      Transition Report on Form 20-F
         [_]      Transition Report on Form 11-K
         [_]      Transition Report on Form 10-Q
         [_]      Transition Report on Form N-SAR
                  For the Transition Period Ended:  _________________________

  Read Instruction (on back page) Before Preparing Form. Please print or type.

Nothing in this form shall be construed to imply that the Commission has
verified any information contained herein.

If the notification relates to a portion of the filing checked above, identify
the Item(s) to which the notification relates:

PART I - REGISTRANT INFORMATION

Secured Income L.P.
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Full Name of Registrant


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Former Name if Applicable

340 Pemberwick Road
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Address of Principal Executive Office (Street and Number)

Greenwich, CT  06831
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City, State and Zip Code

PART II - RULE 12b-25(b) AND (c)

         If the subject report could not be filed without unreasonable effort or
expense and the registrant seeks relief pursuant to Rule 12b-25(b), the
following should be completed. (Check box if appropriate.)

[X]   [ ]         (a)   The reasons  described in reasonable  detail in Part III
                        of  this   form   could   not  be   eliminated   without
                        unreasonable effort or expense;

[X]   [ ]         (b)   The   subject   annual   report,   semi-annual   report,
                        transition  report on Form 10-K,  Form 20-F,  Form 11-K,
                        Form N-SAR or Form  N-CSR,  or portion  thereof  will be
                        filed on or before the 15th  calendar day  following the
                        prescribed due date; or the subject  quarterly report or
                        transition  report on Form 10-Q or subject  distribution
                        report on Form 10-D, or portion thereof will be filed on
                        or  before  the  fifth   calendar  day   following   the
                        prescribed  due date;  and



[ ]   [ ]         (c)   The accountant's statement or other exhibit required by
                        Rule 12b-25(c) has been attached if applicable.

PART III - NARRATIVE

      State below in  reasonable  detail why the Form 10-K,  20-F,  11-K,  10-Q,
10-D,  N-SAR,  N-CSR,  or the transition  report or portion thereof could not be
filed within the prescribed time period. (Attach extra sheets if needed.)

      Additional  information is needed from the Operating Partnerships prior to
filing the Form 10-K for the period ended December 31, 2006.

      The  Registrant  believes  at this  time  that its Form 10-K will be filed
within the grace period provided for under Rule 12b-25.

PART IV - OTHER INFORMATION

(1)   Name  and  telephone  number  of  person  to  contact  in  regard  to this
      notification

      Neal Ludeke               203                   869-0900
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        (Name)               (Area Code)          (Telephone Number)

(2)   Have all other periodic  reports required under Section 13 or 15(d) of the
      Securities  Exchange Act of 1934 or Section 30 of the  Investment  Company
      Act of 1940 during the preceding 12 months or for such shorter period that
      the  registrant  was required to file such  report(s)  been filed?  If the
      answer is no, identify report(s). [X] Yes [ ] No

(3)   Is it  anticipated  that any  significant  change in results of operations
      from the  corresponding  period for the last fiscal year will be reflected
      by the earnings statements to be included in the subject report or portion
      thereof? [X] Yes [ ] No

         If so: attach an explanation of the anticipated change, both
narratively and quantitatively, and, if appropriate, state the reasons why a
reasonable estimate of the results cannot be made.

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                               Secured Income L.P.
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                  (Name of Registrant as Specified in Charter)

Has caused this notification to be signed on its behalf by the undersigned
thereunto duly authorized.

Date: April 2, 2007     By:   Neal Ludeke
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                        Name:   Neal Ludeke
                        Title:  Chief  Financial  Officer of Wilder Richman
                                Resources Corporation,  a General Partner
                                of the Registrant

INSTRUCTION: The form may be signed by an executive officer of the registrant or
by any other duly  authorized  representative.  The name and title of the person
signing  the form  shall  be typed or  printed  beneath  the  signature.  If the
statement is signed on behalf of the registrant by an authorized  representative
(other than an executive officer), evidence of the representative's authority to
sign on behalf of the registrant shall be filed with the form.

                                    ATTENTION

           Intentional misstatements or omissions of fact constitute
               Federal Criminal Violations (see 18 U.S.C. 1001).

                              GENERAL INSTRUCTIONS

         1. This form is required by Rule 12b-25 of the General Rules and
Regulations under the Securities Exchange Act of 1934.

         2. One signed original and four conformed copies of this form and
amendments thereto must be completed and filed with the Securities and Exchange
Commission, Washington, D.C. 20549, in accordance with Rule 0-3 of the General
Rules and Regulations under the Act. The information contained in or filed with
the form will be made a matter of public record in the Commission files.

         3. A manually signed copy of the form and amendments thereto shall be
filed with each national securities exchange on which any class of securities of
the registrant is registered.

         4. Amendments to the notifications must also be filed on Form 12b-25
but need not restate information that has been correctly furnished. The form
shall be clearly identified as an amended notification.

         5. ELECTRONIC FILERS. This form shall not be used by electronic filers
unable to timely file a report solely due to electronic difficulties. Filers
unable to submit a report within the time period prescribed due to difficulties
in electronic filing should comply with either Rule 201 or Rule 202 of
Regulation S-T (Section 232.201 or Section 232.202 of this chapter) or apply for
an adjustment in filing date pursuant to Rule 13(b) of Regulation S-T (Section
232.13(b) of this chapter) .

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                                  ATTACHMENT I

Based on data provided by the Operating Partnerships, the preliminary net income
of Registrant increased by approximately $57,700,000 for the year ended December
31, 2006 as compared to the year ended  December 31, 2005,  resulting  primarily
from the sale of The  Westmont,  the  operating  complex  owned by the  Columbia
Partnership  in  July  2006.  Such  sale  resulted  in a gain  of  approximately
$66,900,000,  of  which  approximately  $10,000,000  is being  allocated  to the
minority interest owners.


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