Segment Reporting and Revenue - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 597,346	$ 268,319
Cost of revenue	524,808	225,961
Gross profit	72,538	42,358
Operating expenses	157,658	76,871
Loss from operations	(85,120)	(34,513)
Interest income	220	159
Interest expense	(3,861)	(1,338)
Income tax expense	(134)	0
Other expense, net	(1,911)	(92)
Net loss	(90,806)	(35,784)
Real estate segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gross profit	23,703	40,393
Properties segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gross profit	20,887	1,596
Real estate and properties segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expenses	109,781	76,871
Rentals segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gross profit	30,851	0
Operating expenses	47,877	0
Mortgage Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gross profit	(2,600)	(158)
Operating Segments | Real estate segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Cost of revenue	153,784	128,216
Operating Segments | Properties segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	379,753	92,726
Cost of revenue	358,866	91,130
Operating Segments | Rentals segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	38,044	0
Cost of revenue	7,193	0
Operating Segments | Mortgage Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	2,917	5,711
Cost of revenue	5,517	5,869
Other revenue
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	4,368	3,646
Cost of revenue	4,671	3,119
Gross profit	(303)	527
Intercompany eliminations
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	(5,223)	(2,373)
Cost of revenue	(5,223)	(2,373)
Brokerage revenue | Operating Segments | Real estate segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	167,872	156,447
Partner revenue | Operating Segments | Real estate segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 9,615	$ 12,162