Exhibit (a)(3)











March 23, 2005



TO:          UNIT HOLDERS OF NATIONAL PROPERTY INVESTORS 4

SUBJECT:     OFFER TO PURCHASE UNITS

Dear Unit Holder:

As described in the enclosed Offer to Purchase and related Letters of
Transmittal (the "Offer"), MP FALCON FUND, MP VALUE FUND 6, LLC, MPF ACQUISITION
CO. 3, LLC, STEVEN GOLD, MORAGA GOLD, LLC, MPF NY 2005, LLC, MPF SPECIAL FUND 8,
LLC, AHY INSTITUTIONAL INVESTORS, AHY INSTITUTIONAL FUND, MACKENZIE PATTERSON
SPECIAL FUND 7, LLC, MPF DEWAAY FUND 3, LLC, MP VALUE FUND 8, LLC, and MACKENZIE
PATTERSON FULLER, INC. (collectively the "Purchasers") are offering to purchase
up to 12,000 Units of limited partnership interest (the "Units") in NATIONAL
PROPERTY INVESTORS 4, a California limited partnership (the "Partnership") at a
purchase price equal to:

                                $210.00 per Unit
                                ----------------

The Offer will provide you with an opportunity to liquidate all, or a portion
of, your investment in NATIONAL PROPERTY INVESTORS 4 without the usual
transaction costs associated with market sales or partnership transfer fees.

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

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

If you have any questions or need assistance, please call the Depository at
800-854-8357.

This Offer expires (unless extended) May 6, 2005