<ARTICLE>                     5
<LEGEND>
         This schedule contains summary financial information extracted from the
financial statements of Realmark Property Investors Limited Partnership VI-B for
the three months ended March 31, 1999, and is qualified in its entirety by
reference to such financial statements.
</LEGEND>
<MULTIPLIER>                                    1

                                            
<PERIOD-TYPE>                                3-MOS
<FISCAL-YEAR-END>                      DEC-31-1999
<PERIOD-START>                         JAN-01-1999
<PERIOD-END>                           MAR-31-1999
<CASH>                                     739,545
<SECURITIES>                                     0
<RECEIVABLES>                              122,257
<ALLOWANCES>                                     0
<INVENTORY>                                      0
<CURRENT-ASSETS>                         1,194,685
<PP&E>                                   7,064,582
<DEPRECIATION>                           1,935,963
<TOTAL-ASSETS>                           6,838,175
<CURRENT-LIABILITIES>                      331,811
<BONDS>                                  5,277,930
<PREFERRED-MANDATORY>                            0
<PREFERRED>                                      0
<COMMON>                                         0
<OTHER-SE>                                       0
<TOTAL-LIABILITY-AND-EQUITY>             6,838,175
<SALES>                                          0
<TOTAL-REVENUES>                           462,188
<CGS>                                            0
<TOTAL-COSTS>                              612,544
<OTHER-EXPENSES>                            34,226
<LOSS-PROVISION>                                 0
<INTEREST-EXPENSE>                         112,597
<INCOME-PRETAX>                           (184,582)
<INCOME-TAX>                                     0
<INCOME-CONTINUING>                              0
<DISCONTINUED>                                   0
<EXTRAORDINARY>                                  0
<CHANGES>                                        0
<NET-INCOME>                              (184,582)
<EPS-BASIC>                                (2.28)
<EPS-DILUTED>                                    0