    <SEC-DOCUMENT>0001558370-24-001709-index.html : 20240226
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    <ACCEPTANCE-DATETIME>20240226162547
    ACCESSION NUMBER:		0001558370-24-001709
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		24
    CONFORMED PERIOD OF REPORT:	20240226
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20240226
    DATE AS OF CHANGE:		20240226

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			FRANKLIN STREET PROPERTIES CORP /MA/
    		CENTRAL INDEX KEY:			0001031316
    		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
    		ORGANIZATION NAME:           	05 Real Estate & Construction
    		IRS NUMBER:				042724223
    		STATE OF INCORPORATION:			MA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-32470
    		FILM NUMBER:		24679303

    	BUSINESS ADDRESS:
    		STREET 1:		401 EDGEWATER PLACE
    		STREET 2:		STE 200
    		CITY:			WAKEFIELD
    		STATE:			MA
    		ZIP:			01880
    		BUSINESS PHONE:		7815571300

    	MAIL ADDRESS:
    		STREET 1:		401 EDGEWATER PLACE
    		STREET 2:		STE 200
    		CITY:			WAKEFIELD
    		STATE:			MA
    		ZIP:			01880

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	FRANKLIN STREET PARTNERS LP
    		DATE OF NAME CHANGE:	20010301
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>fsp-20240226x8k.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: fsp-20240226x8k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>fsp-20240226xex99d1.htm
    <DESCRIPTION>EX-99.1
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    Document 2 - file: fsp-20240226xex99d1.htm

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    <SEQUENCE>3
    <FILENAME>fsp-20240226xex99d2.htm
    <DESCRIPTION>EX-99.2
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    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>12
    <FILENAME>fsp-20240226.xsd
    <DESCRIPTION>EX-101.SCH
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    Document 12 - file: fsp-20240226.xsd

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    <DOCUMENT>
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    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>14
    <FILENAME>fsp-20240226_pre.xml
    <DESCRIPTION>EX-101.PRE
    <TEXT>
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    <TYPE>XML
    <SEQUENCE>15
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    <TEXT>
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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>17
    <FILENAME>Financial_Report.xlsx
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    <TEXT>
    Document 17 - file: Financial_Report.xlsx

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    <TYPE>XML
    <SEQUENCE>18
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    <TYPE>XML
    <SEQUENCE>19
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    <TEXT>
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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>21
    <FILENAME>FilingSummary.xml
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    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>23
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    <TEXT>
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    <SEQUENCE>24
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