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            <rptOwnerStreet2>SUITE 800</rptOwnerStreet2>
            <rptOwnerCity>ROCKVILLE</rptOwnerCity>
            <rptOwnerState>MD</rptOwnerState>
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    <derivativeTable>
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    <footnotes></footnotes>

    <ownerSignature>
        <signatureName>By: Laura M. Franklin</signatureName>
        <signatureDate>2004-12-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0202
4
2004-12-09
0
0000104894
WASHINGTON REAL ESTATE INVESTMENT TRUST
WRE
0001182628
CRONIN EDMUND B JR
6110 EXECUTIVE BOULEVARD
SUITE 800
ROCKVILLE
MD
20852
0
1
0
0
Chairman, President & CEO
Common Stock
2004-12-09
4
M
0
13333
14.6250
A
144845.8735
D
Common Stock
2004-12-09
4
M
0
20473
16.1875
A
165318.8735
D
Common Stock
2004-12-09
4
M
0
93089
14.4688
A
258407.8735
D
Common Stock
2004-12-09
4
S
0
28000
33.4902
D
230407.8735
D
Common Stock
2004-12-10
4
S
0
60000
33.5895
D
170407.8735
D
Common Stock
2004-12-13
4
S
0
38895
33.5770
D
131512.8735
D
NQO - 1995 Officer
14.63
2004-12-09
4
M
0
13333
14.63
D
1996-12-19
2005-12-19
Common Stock
13333.00
0.00
D
NQO - 1996 Officer
16.19
2004-12-09
4
M
0
20473
16.19
D
1997-12-17
2006-12-17
Common Stock
20473.00
0.00
D
NQO - 1999 Officer
14.47
2004-12-09
4
M
0
93089
14.47
D
2000-12-17
2009-12-17
Common Stock
93089.00
0.00
D
By: Laura M. Franklin
2004-12-13