Related Party Transactions	9 Months Ended
Sep. 30, 2017
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS During the three and nine months ended September 30, 2017 and 2016, the Company had related party transactions through the normal course of business. These transactions include the following: In 2012, we formed Centre Living Homes, LLC (“Centre Living”), a builder that focuses on a limited number of homes and luxury townhomes each year in the Dallas, Texas market. Trevor Brickman, the son of Green Brick’s Chief Executive Officer, is the President of Centre Living. Effective as of January 1, 2015, Centre Living’s operating agreement was amended and restated to the same general terms as with our other builders, such that Green Brick's ownership interest in Centre Living is 50% and Trevor Brickman's ownership interest is 50% for future operations beginning January 1, 2015. Subsequent to this amendment, Green Brick has 51% voting control over the operations of Centre Living. As such, 100% of Centre Living’s operations are included within our condensed consolidated financial statements. The noncontrolling interest attributable to Centre Living was $57,535 and $0.3 million as of September 30, 2017 and December 31, 2016, respectively. In June 2016, the Company sold one developed lot to Trevor Brickman for $0.4 million, of which $0.3 million was included in the cost of land and lots. In September 2016, Trevor Brickman entered into an agreement with Centre Living to construct a home on the developed lot. In accordance with the Company's employee discount policy, the contract price results in a 13% margin. As of September 30, 2017, the Company has incurred $0.6 million in costs to construct the home. In September 2015, the Company purchased 11 lots from an entity affiliated with the president of The Providence Group of Georgia L.L.C. (“TPG”), one of its controlled builders. The lots are part of a 19-home community, The Parc at Cogburn in Atlanta. The total paid for the lots in 2015 was $1.8 million. Under the option agreement in place, the Company purchased $0.3 million in lots during 2016, and $1.0 million during the six months ended June 30, 2017, respectively. The Company purchased all 19 lots as of June 30, 2017. In November 2015, the Company purchased 12 lots from an entity affiliated with the president of TPG. The lots are part of a 92-unit townhome community, Glens at Sugarloaf in Atlanta. No deposits were paid by the Company in contracting for the lots. The total paid for the lots in 2015 was $1.0 million. During March 2016, the Company purchased the remaining 80 townhome lots within the community at a price of $4.8 million from the affiliated entity. During March 2016, the Company purchased undeveloped land for an eventual 83 lot community, Academy Street in Atlanta. Simultaneously, the Company entered into a partnership agreement with an entity affiliated with the president of TPG to develop the community for sale of the lots to TPG under GRBK Academy LLC. Contributions and profits will be 80% for the Company and 20% for the affiliated entity. Total capital contributions are estimated at $11.8 million, of which $9.4 million was contributed by the Company. The total contributions paid in 2016 were $11.2 million, of which $9.0 million was paid by the Company. The total contributions paid during the three and nine months ended September 30, 2017 was $0.0 million and $0.5 million, of which $0.0 million and $0.4 million, respectively, was paid by the Company. The Company has 80% ownership in GRBK Academy, LLC and has consolidated the entity’s results of operation and financial condition into its financial statements. During March 2016, the Company purchased undeveloped land for an eventual 73-unit townhome community, Suwanee Station in Atlanta. Simultaneously, the Company entered into a partnership agreement with an entity affiliated with the president of TPG to develop the community for sale of the lots to TPG under GRBK Suwanee Station LLC. Contributions and profits will be 50% for the Company and 50% for the affiliated entity. Total capital contributions are estimated at $3.4 million, of which $1.7 million will be contributed by the Company. The total contributions paid in 2016 were $1.8 million, of which $0.9 million was paid by the Company. The total contributions paid during the three and nine months ended September 30, 2017 was $0.3 million and $0.7 million, of which $0.2 million and $0.4 million, respectively, was paid by the Company. The Company holds two of the three board seats and is able to exercise control over the operations of GRBK Suwanee Station LLC, and therefore has consolidated the entity’s results of operation and financial condition into its financial statements. In June 2016, the Company purchased 14 lots from an entity affiliated with the president of TPG. The lots are part of a 40-unit townhome community, Dunwoody Towneship. No deposits were paid by the Company related to these lots. The total paid for the lots during the three and nine months ended September 30, 2017, and in all of 2016 was $1.0 million and $2.3 million, and $1.8 million, respectively. The total expected to be paid for the remaining lots is $1.2 million during 2017. In February 2017, Richard A. Costello paid a $110,000 deposit to Centre Living Homes, LLC on a townhome he expects to purchase for a value of approximately $525,000. In accordance with the Company's employee discount policy, the contract price results in a 13% margin. In February 2017, Jed Dolson paid a $110,000 deposit to Centre Living Homes, LLC on a townhome he expects to purchase for a value of approximately $475,000. In accordance with the Company's employee discount policy, the contract price results in a 13% margin.

RELATED PARTY TRANSACTIONS

During the three and nine months ended September 30, 2017 and 2016, the Company had related party transactions through the normal course of business. These transactions include the following:

In 2012, we formed Centre Living Homes, LLC (“Centre Living”), a builder that focuses on a limited number of homes and luxury townhomes each year in the Dallas, Texas market. Trevor Brickman, the son of Green Brick’s Chief Executive Officer, is the President of Centre Living. Effective as of January 1, 2015, Centre Living’s operating agreement was amended and restated to the same general terms as with our other builders, such that Green Brick's ownership interest in Centre Living is 50% and Trevor Brickman's ownership interest is 50% for future operations beginning January 1, 2015. Subsequent to this amendment, Green Brick has 51% voting control over the operations of Centre Living. As such, 100% of Centre Living’s operations are included within our condensed consolidated financial statements. The noncontrolling interest attributable to Centre Living was $57,535 and $0.3 million as of September 30, 2017 and December 31, 2016, respectively. In June 2016, the Company sold one developed lot to Trevor Brickman for $0.4 million, of which $0.3 million was included in the cost of land and lots. In September 2016, Trevor Brickman entered into an agreement with Centre Living to construct a home on the developed lot. In accordance with the Company's employee discount policy, the contract price results in a 13% margin. As of September 30, 2017, the Company has incurred $0.6 million in costs to construct the home.

In September 2015, the Company purchased 11 lots from an entity affiliated with the president of The Providence Group of Georgia L.L.C. (“TPG”), one of its controlled builders. The lots are part of a 19-home community, The Parc at Cogburn in Atlanta. The total paid for the lots in 2015 was $1.8 million. Under the option agreement in place, the Company purchased $0.3 million in lots during 2016, and $1.0 million during the six months ended June 30, 2017, respectively. The Company purchased all 19 lots as of June 30, 2017.

In November 2015, the Company purchased 12 lots from an entity affiliated with the president of TPG. The lots are part of a 92-unit townhome community, Glens at Sugarloaf in Atlanta. No deposits were paid by the Company in contracting for the lots. The total paid for the lots in 2015 was $1.0 million. During March 2016, the Company purchased the remaining 80 townhome lots within the community at a price of $4.8 million from the affiliated entity.

During March 2016, the Company purchased undeveloped land for an eventual 83 lot community, Academy Street in Atlanta. Simultaneously, the Company entered into a partnership agreement with an entity affiliated with the president of TPG to develop the community for sale of the lots to TPG under GRBK Academy LLC. Contributions and profits will be 80% for the Company and 20% for the affiliated entity. Total capital contributions are estimated at $11.8 million, of which $9.4 million was contributed by the Company. The total contributions paid in 2016 were $11.2 million, of which $9.0 million was paid by the Company. The total contributions paid during the three and nine months ended September 30, 2017 was $0.0 million and $0.5 million, of which $0.0 million and $0.4 million, respectively, was paid by the Company. The Company has 80% ownership in GRBK Academy, LLC and has consolidated the entity’s results of operation and financial condition into its financial statements.

During March 2016, the Company purchased undeveloped land for an eventual 73-unit townhome community, Suwanee Station in Atlanta. Simultaneously, the Company entered into a partnership agreement with an entity affiliated with the president of TPG to develop the community for sale of the lots to TPG under GRBK Suwanee Station LLC. Contributions and profits will be 50% for the Company and 50% for the affiliated entity. Total capital contributions are estimated at $3.4 million, of which $1.7 million will be contributed by the Company. The total contributions paid in 2016 were $1.8 million, of which $0.9 million was paid by the Company. The total contributions paid during the three and nine months ended September 30, 2017 was $0.3 million and $0.7 million, of which $0.2 million and $0.4 million, respectively, was paid by the Company. The Company holds two of the three board seats and is able to exercise control over the operations of GRBK Suwanee Station LLC, and therefore has consolidated the entity’s results of operation and financial condition into its financial statements.

In June 2016, the Company purchased 14 lots from an entity affiliated with the president of TPG. The lots are part of a 40-unit townhome community, Dunwoody Towneship. No deposits were paid by the Company related to these lots. The total paid for the lots during the three and nine months ended September 30, 2017, and in all of 2016 was $1.0 million and $2.3 million, and $1.8 million, respectively. The total expected to be paid for the remaining lots is $1.2 million during 2017.

In February 2017, Richard A. Costello paid a $110,000 deposit to Centre Living Homes, LLC on a townhome he expects to purchase for a value of approximately $525,000. In accordance with the Company's employee discount policy, the contract price results in a 13% margin.

In February 2017, Jed Dolson paid a $110,000 deposit to Centre Living Homes, LLC on a townhome he expects to purchase for a value of approximately $475,000. In accordance with the Company's employee discount policy, the contract price results in a 13% margin.