EXHIBIT 12.1
                                       
                         ALEXANDRIA REAL ESTATE EQUITIES, INC.

            COMPUTATION OF CONSOLIDATED RATIO OF EARNINGS TO COMBINED FIXED
                        CHARGES AND PREFERRED STOCK DIVIDENDS
                            (in thousands, except ratios)



                                                                                                        The Period
                                                                                                        October 27,
                                                                                                            1994
                                                                                                        (inception)
                                                                       Year Ended December 31,             though
                                                               ---------------------------------------  December 31,
                                                                 1998       1997       1996      1995       1994
                                                               -------    --------    ------    ------  ------------
                                                                                         
Earnings (Loss):............................................    19,403    $(2,797)    $2,175    $  866     $(648)
Add back:
    Interest Expense........................................    14,033      7,043      6,327     3,553       328
    Write-Off of Unamortized Loan Costs.....................       --       2,295        --        --        --
    Acquisition LLC Financing Costs.........................       --       6,973        --        --        --
                                                               -------    -------     ------    ------     ------
        Earnings Available for Fixed Charges................    33,436    $13,514     $8,502    $4,419     $(320)
                                                               -------    -------     ------    ------     ------
Combined Fixed Charges:
    Interest Incurred.......................................    16,232    $ 7,139     $6,327    $3,553     $ 328
    Write-Off of Unamortized Loan Costs(a)..................       --       2,295        --        --        --
    Acquisition LLC Financing Costs(b)......................       --       6,973        --        --        --
    Preferred Dividends.....................................       --       3,038      1,590       --        --
                                                               -------    -------     ------    ------     ------
        Fixed Charges.......................................    16,232    $19,445     $7,917    $3,553     $ 328
                                                               -------    -------     ------    ------     ------
Ratio of Earnings to Fixed Charges and Preferred
    Stock Dividends(c)......................................      2.06       0.69       1.07      1.24       --
Excess of Fixed Charges Over Earnings.......................   $   --     $ 5,931     $  --     $  --      $ 648


- ------------------------
(a)  This amount represents unamortized loan costs associated with debt retired 
     in connection with the IPO.

(b)  This amount represents the portion of the purchase price of the 
     membership interests in ARE Acquisitions, LLC (the "Acquisition LLC") paid 
     by the Company in excess of the cost incurred by the Acquisition LLC to 
     acquire the three Life Science Facilities owned by it.

(c)  For purposes of calculating the consolidated ratio of earnings to 
     combined fixed charges and preferred stock dividends, earnings consist 
     of earnings before income taxes and fixed charges. Fixed charges consist 
     of interest incurred (including amortization of deferred financing costs 
     and capitalized interest), write-off of unamortized loan costs, 
     Acquisition LLC Financing Costs (see Note (b)), and preferred stock 
     dividends.