    <SEC-DOCUMENT>0000915912-19-000002-index.html : 20190205
    <SEC-HEADER>0000915912-19-000002.hdr.sgml : 20190205
    <ACCEPTANCE-DATETIME>20190205074246
    ACCESSION NUMBER:		0000915912-19-000002
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		5
    CONFORMED PERIOD OF REPORT:	20190204
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20190205
    DATE AS OF CHANGE:		20190205

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			AVALONBAY COMMUNITIES INC
    		CENTRAL INDEX KEY:			0000915912
    		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
    		IRS NUMBER:				770404318
    		STATE OF INCORPORATION:			MD
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-12672
    		FILM NUMBER:		19566235

    	BUSINESS ADDRESS:
    		STREET 1:		671 N. GLEBE ROAD
    		STREET 2:		SUITE 800
    		CITY:			ARLINGTON
    		STATE:			VA
    		ZIP:			22203
    		BUSINESS PHONE:		7033296300

    	MAIL ADDRESS:
    		STREET 1:		671 N. GLEBE ROAD
    		STREET 2:		STE 800
    		CITY:			ARLINGTON
    		STATE:			VA
    		ZIP:			22203

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	AVALON BAY COMMUNITIES INC
    		DATE OF NAME CHANGE:	19980618

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BAY APARTMENT COMMUNITIES INC
    		DATE OF NAME CHANGE:	19931208
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>q42018earningsrelease8-k.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: q42018earningsrelease8-k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>q42018earningsrelease991.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: q42018earningsrelease991.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>q42018earningsrelease992.htm
    <DESCRIPTION>EXHIBIT 99.2
    <TEXT>
    Document 3 - file: q42018earningsrelease992.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>avbpressreleaseheader1a12.jpg
    <TEXT>
    Document 4 - file: avbpressreleaseheader1a12.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>erq42018.jpg
    <TEXT>
    Document 5 - file: erq42018.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>