Organization and Nature of Business	12 Months Ended
Dec. 31, 2012
Organization, Consolidation and Presentation Of Financial Statements [Abstract]
Nature of Operations [Text Block]	Note 1 – Organization and Nature of Business Bluerock Multifamily Growth REIT, Inc. (the “Company”) was incorporated on July 25, 2008 under the laws of the state of Maryland. The Company has elected to be treated, and currently qualifies, as a real estate investment trust or REIT for Federal income tax purposes. The Company was incorporated to raise capital and acquire a diverse portfolio of residential real estate assets. Our day-to-day operations are managed by Bluerock Multifamily Advisor, LLC (our “Advisor”), under an advisory agreement. The advisory agreement has a one-year term expiring October 14, 2013, and may be renewed for an unlimited number of successive one-year periods upon the mutual consent of our Advisor and us. The use of the words “we,” “us” or “our” refers to Bluerock Multifamily Growth REIT, Inc. and its subsidiary Bluerock Multifamily Holdings, L.P., or our operating partnership, except where the context otherwise requires. On February 22, 2013, we changed the name of the Company from Bluerock Enhanced Multifamily Trust, Inc. to Bluerock Multifamily Growth REIT, Inc. On August 22, 2008, the Company filed a registration statement on Form S-11 with the Securities and Exchange Commission (the “SEC”) to offer a maximum of $1,000,000,000 in shares of its common stock in a primary offering, at an offering price of $10.00 per share, with discounts available for certain categories of purchasers and up to $285,000,000 in shares pursuant to its distribution reinvestment plan at $9.50 per share (the “Initial Public Offering”). The SEC declared the Company’s registration statement effective on October 15, 2009. As of May 20, 2010, the Company had received gross offering proceeds sufficient to satisfy the minimum offering amount for the Initial Public Offering. Accordingly, the Company broke escrow with respect to subscriptions received from all states in which the shares are currently being offered. As of December 31, 2012, the Company had accepted aggregate gross offering proceeds of $21,111,894. Also as of December 31, 2012, the Company had redeemed a total of 35,850 shares sold in the Initial Public Offering for $335,110. The Initial Public Offering was suspended from November 17, 2010 until March 2, 2011 in connection with the Company’s determination to restate certain of its financial statements. These restatements, which were filed on January 19, 2011, resulted in unanticipated costs in the form of accounting, legal fees, and similar professional fees, in addition to the time and attention of the Company’s Chief Financial Officer and members of its accounting team in preparing the restatements. The Company’s current corporate operating expenses exceed the cash flow received from its investments in real estate joint ventures. If the rate at which the Company raises offering proceeds does not continue to improve significantly, its general and administrative costs will remain higher relative to the size of the Company’s portfolio, its portfolio may not be as diversified as it would be otherwise and the Company may need to seek additional sources of funding to address short and long term liquidity requirements. To the extent cash on hand is not sufficient to meet the Company’s short-term liquidity requirements, it expects to utilize credit facilities obtained from affiliates or unaffiliated third parties. The Company’s Sponsor has also agreed to defer payment by the Company as needed of asset management fees, acquisition fees and organizational and offering costs incurred by the Company and has also agreed to defer current year reimbursable operating expenses as well as to fund any cash shortfall, as necessary, through March 12, 2014. On July 5, 2011, the Company provided its former dealer manager, Select Capital Corporation (“Select Capital”), with notice that it considers the Dealer Manager Agreement with Select Capital entered into on October 15, 2009 to have been terminated, effective immediately. In addition, on July 5, 2011, the Company entered into a dealer manager agreement with Bluerock Capital Markets, LLC (“Bluerock Capital Markets”), the Company’s affiliate, pursuant to which it assumed dealer manager responsibilities for the remainder of the Initial Public Offering. The dealer manager is responsible for marketing the Company’s shares in the Initial Public Offering and is expected to provide the same services for our Follow-On Offering, which is described below. On September 20, 2012, the Company filed a registration statement on Form S-11 with the SEC, to register $500.0 million in shares of its common stock (exclusive of shares to be sold pursuant to the Company’s distribution reinvestment program) at a price of $10.00 per share (subject to certain volume discounts described in the prospectus), and $50.0 million in shares of its common stock to be sold pursuant to the Company’s distribution reinvestment plan at $9.50 per share, pursuant to a follow-on offering to the Initial Public Offering (the “Follow-On Offering”). As permitted by Rule 415 under the Securities Act, we will now continue the Initial Public Offering until the earlier of April 13, 2013 or the date the SEC declares the registration statement for the Follow-On Offering effective. To the extent the Company cannot sell shares of common stock to raise capital by means of the Follow-On Offering after the Initial Public Offering ends, the Company would need to seek alternative financing arrangements to continue our operations and investment activities. The Company can make no assurances that it will be able to secure alternative financing arrangements if that becomes necessary.

Organization and Nature of Business

12 Months Ended

Dec. 31, 2012

Organization, Consolidation and Presentation Of Financial Statements [Abstract]

Note 1 – Organization and Nature of Business

Bluerock Multifamily Growth REIT, Inc. (the “Company”) was incorporated on July 25, 2008 under the laws of the state of Maryland. The Company has elected to be treated, and currently qualifies, as a real estate investment trust or REIT for Federal income tax purposes. The Company was incorporated to raise capital and acquire a diverse portfolio of residential real estate assets. Our day-to-day operations are managed by Bluerock Multifamily Advisor, LLC (our “Advisor”), under an advisory agreement. The advisory agreement has a one-year term expiring October 14, 2013, and may be renewed for an unlimited number of successive one-year periods upon the mutual consent of our Advisor and us. The use of the words “we,” “us” or “our” refers to Bluerock Multifamily Growth REIT, Inc. and its subsidiary Bluerock Multifamily Holdings, L.P., or our operating partnership, except where the context otherwise requires. On February 22, 2013, we changed the name of the Company from Bluerock Enhanced Multifamily Trust, Inc. to Bluerock Multifamily Growth REIT, Inc.

On August 22, 2008, the Company filed a registration statement on Form S-11 with the Securities and Exchange Commission (the “SEC”) to offer a maximum of $1,000,000,000 in shares of its common stock in a primary offering, at an offering price of $10.00 per share, with discounts available for certain categories of purchasers and up to $285,000,000 in shares pursuant to its distribution reinvestment plan at $9.50 per share (the “Initial Public Offering”). The SEC declared the Company’s registration statement effective on October 15, 2009. As of May 20, 2010, the Company had received gross offering proceeds sufficient to satisfy the minimum offering amount for the Initial Public Offering. Accordingly, the Company broke escrow with respect to subscriptions received from all states in which the shares are currently being offered. As of December 31, 2012, the Company had accepted aggregate gross offering proceeds of $21,111,894. Also as of December 31, 2012, the Company had redeemed a total of 35,850 shares sold in the Initial Public Offering for $335,110.

The Initial Public Offering was suspended from November 17, 2010 until March 2, 2011 in connection with the Company’s determination to restate certain of its financial statements. These restatements, which were filed on January 19, 2011, resulted in unanticipated costs in the form of accounting, legal fees, and similar professional fees, in addition to the time and attention of the Company’s Chief Financial Officer and members of its accounting team in preparing the restatements. The Company’s current corporate operating expenses exceed the cash flow received from its investments in real estate joint ventures. If the rate at which the Company raises offering proceeds does not continue to improve significantly, its general and administrative costs will remain higher relative to the size of the Company’s portfolio, its portfolio may not be as diversified as it would be otherwise and the Company may need to seek additional sources of funding to address short and long term liquidity requirements. To the extent cash on hand is not sufficient to meet the Company’s short-term liquidity requirements, it expects to utilize credit facilities obtained from affiliates or unaffiliated third parties. The Company’s Sponsor has also agreed to defer payment by the Company as needed of asset management fees, acquisition fees and organizational and offering costs incurred by the Company and has also agreed to defer current year reimbursable operating expenses as well as to fund any cash shortfall, as necessary, through March 12, 2014.

On July 5, 2011, the Company provided its former dealer manager, Select Capital Corporation (“Select Capital”), with notice that it considers the Dealer Manager Agreement with Select Capital entered into on October 15, 2009 to have been terminated, effective immediately. In addition, on July 5, 2011, the Company entered into a dealer manager agreement with Bluerock Capital Markets, LLC (“Bluerock Capital Markets”), the Company’s affiliate, pursuant to which it assumed dealer manager responsibilities for the remainder of the Initial Public Offering. The dealer manager is responsible for marketing the Company’s shares in the Initial Public Offering and is expected to provide the same services for our Follow-On Offering, which is described below.

On September 20, 2012, the Company filed a registration statement on Form S-11 with the SEC, to register $500.0 million in shares of its common stock (exclusive of shares to be sold pursuant to the Company’s distribution reinvestment program) at a price of $10.00 per share (subject to certain volume discounts described in the prospectus), and $50.0 million in shares of its common stock to be sold pursuant to the Company’s distribution reinvestment plan at $9.50 per share, pursuant to a follow-on offering to the Initial Public Offering (the “Follow-On Offering”). As permitted by Rule 415 under the Securities Act, we will now continue the Initial Public Offering until the earlier of April 13, 2013 or the date the SEC declares the registration statement for the Follow-On Offering effective. To the extent the Company cannot sell shares of common stock to raise capital by means of the Follow-On Offering after the Initial Public Offering ends, the Company would need to seek alternative financing arrangements to continue our operations and investment activities. The Company can make no assurances that it will be able to secure alternative financing arrangements if that becomes necessary.