CommonWealth REIT (NYSE: CWH) today announced that the characteristics of dividends for 2011 income tax reporting purposes are as follows:

Common Shares

                Dividend Allocation
Per Share
            Unrecaptured    
Declaration Record Paid/Payable Dividends Ordinary Qualified Capital Section 1250 Return of
Dates Dates Dates Per Share Income Dividend Gain Gain Capital
01/05/11 01/21/11 02/22/11 $0.50 $0.3295 $0.0000 $0.0161 $0.0367 $0.1177
04/05/11 04/21/11 05/24/11 $0.50 $0.3295 $0.0000 $0.0161 $0.0367 $0.1177
07/01/11 07/11/11 08/25/11 $0.50 $0.3295 $0.0000 $0.0161 $0.0367 $0.1177
10/05/11 10/21/11 11/22/11 $0.50 $0.3295 $0.0000 $0.0161 $0.0367 $0.1177
TOTALS: $2.00 $1.3180 $0.0000 $0.0644 $0.1468 $0.4708
100.00% 65.90% 0% 3.22% 7.34% 23.54%
 

The CWH common share CUSIP number is 203233101. This information represents final income allocations.

Preferred C Shares

                Dividend Allocation
Per Share
            Unrecaptured    
Declaration Record Paid/Payable Dividends Ordinary Qualified Capital Section 1250 Return of
Dates Dates Dates Per Share Income Dividend Gain Gain Capital
01/05/11 02/01/11 02/15/11 $0.4453 $0.3838 $0.0000 $0.0187 $0.0427 $0.0000
04/05/11 05/01/11 5/16/2011 $0.4453 $0.3838 $0.0000 $0.0187 $0.0427 $0.0000
07/01/11 08/01/11 08/15/11 $0.4453 $0.3838 $0.0000 $0.0187 $0.0427 $0.0000
10/05/11 11/01/11 11/15/11 $0.4453 $0.3838 $0.0000 $0.0187 $0.0427 $0.0000
TOTALS: $1.7812 $1.5352 $0.0000 $0.0748 $0.1708 $0.0000
100.00% 86.20% 0% 4.20% 9.60% 0%
 

The CWH Series C preferred share CUSIP number is 203233309. This information represents final income allocations.

Preferred D Shares

                Dividend Allocation
Per Share
            Unrecaptured    
Declaration Record Paid/Payable Dividends Ordinary Qualified Capital Section 1250 Return of
Dates Dates Dates Per Share Income Dividend Gain Gain Capital
01/05/11 02/01/11 02/15/11 $0.4063 $0.3502 $0.0000 $0.0171 $0.0390 $0.0000
04/05/11 05/01/11 05/16/11 $0.4063 $0.3502 $0.0000 $0.0171 $0.0390 $0.0000
07/01/11 08/01/11 08/15/11 $0.4063 $0.3502 $0.0000 $0.0171 $0.0390 $0.0000
10/05/11 11/01/11 11/15/11 $0.4063 $0.3502 $0.0000 $0.0171 $0.0390 $0.0000
TOTALS: $1.6252 $1.4008 $0.0000 $0.0684 $0.1560 $0.0000
100.00% 86.19% 0% 4.21% 9.60% 0%
 

The CWH Series D preferred share CUSIP number is 20323340810. This information represents final income allocations.

Preferred E Shares

                Dividend Allocation
Per Share
            Unrecaptured    
Declaration Record Paid/Payable Dividends Ordinary Qualified Capital Section 1250 Return of
Dates Dates Dates Per Share Income Dividend Gain Gain Capital
07/01/11 08/01/11 08/15/11 $0.3726 $0.3212 $0.0000 $0.0157 $0.0358 $0.0000
10/05/11 11/01/11 11/15/11 $0.4531 $0.3906 $0.0000 $0.0191 $0.0435 $0.0000
TOTALS: $0.8257 $0.7118 $0.0000 $0.0348 $0.0793 $0.0000
100.00% 86.20% 0% 4.20% 9.60% 0%
 

The CWH Series E preferred share CUSIP number is 203233606. This information represents final income allocations.

CommonWealth REIT is a real estate investment trust, or REIT, which primarily owns office and industrial properties located throughout the United States. CWH is headquartered in Newton, Massachusetts.

A Maryland Real Estate Investment Trust with transferable shares of beneficial interest listed on the New York Stock Exchange.

No shareholder, Trustee or officer is personally liable for any act or obligation of the Trust.

CommonWealth REIT
Timothy A. Bonang, 617-796-8222
Vice President, Investor Relations
or
Carlynn Finn, 617-796-8222
Senior Manager, Investor Relations
www.cwhreit.com