    <SEC-DOCUMENT>0001656423-19-000003-index.html : 20190130
    <SEC-HEADER>0001656423-19-000003.hdr.sgml : 20190130
    <ACCEPTANCE-DATETIME>20190129183713
    ACCESSION NUMBER:		0001656423-19-000003
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		12
    CONFORMED PERIOD OF REPORT:	20190129
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20190130
    DATE AS OF CHANGE:		20190129

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BOSTON PROPERTIES INC
    		CENTRAL INDEX KEY:			0001037540
    		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
    		IRS NUMBER:				042473675
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13087
    		FILM NUMBER:		19549872

    	BUSINESS ADDRESS:
    		STREET 1:		800 BOYLSTON STREET
    		STREET 2:		SUITE 1900
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02199
    		BUSINESS PHONE:		6172363300

    	MAIL ADDRESS:
    		STREET 1:		800 BOYLSTON STREET
    		STREET 2:		SUITE 1900
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02199

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BOSTON PROPERTIES LTD PARTNERSHIP
    		CENTRAL INDEX KEY:			0001043121
    		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-50209
    		FILM NUMBER:		19549871

    	BUSINESS ADDRESS:
    		STREET 1:		800 BOYLSTON STREET
    		STREET 2:		SUITE 1900
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02199
    		BUSINESS PHONE:		6172363300

    	MAIL ADDRESS:
    		STREET 1:		800 BOYLSTON STREET
    		STREET 2:		SUITE 1900
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02199
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>bxpandbplpform8-k20181231.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: bxpandbplpform8-k20181231.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>q42018supplementaldocx.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: q42018supplementaldocx.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>q42018pressreleasedocx.htm
    <DESCRIPTION>EXHIBIT 99.2
    <TEXT>
    Document 3 - file: q42018pressreleasedocx.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>a20170504399parkcamera02300d.jpg
    <TEXT>
    Document 4 - file: a20170504399parkcamera02300d.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>bxplogohorizontalcolorrgba11.jpg
    <TEXT>
    Document 5 - file: bxplogohorizontalcolorrgba11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>bxplogosupplementalcovera02.jpg
    <TEXT>
    Document 6 - file: bxplogosupplementalcovera02.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>bxplogosupplementalheadera02.jpg
    <TEXT>
    Document 7 - file: bxplogosupplementalheadera02.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>chart-1a41e663209a53748f8.jpg
    <TEXT>
    Document 8 - file: chart-1a41e663209a53748f8.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>chart-5d0ba1ceb2045fe1b6d.jpg
    <TEXT>
    Document 9 - file: chart-5d0ba1ceb2045fe1b6d.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>chart-72bc850d1ed35b7abc2.jpg
    <TEXT>
    Document 10 - file: chart-72bc850d1ed35b7abc2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>chart-719d7d3210485f60bc1.jpg
    <TEXT>
    Document 11 - file: chart-719d7d3210485f60bc1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>chart-c3398705b21756d1a7e.jpg
    <TEXT>
    Document 12 - file: chart-c3398705b21756d1a7e.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>