The National Association of Realtors (NAR) estimates that when a home is sold in the US, it produces a multiplier effect that generates $57,543 in economic impact. Those economic contributions are derived from; Home construction, real estate brokerage, mortgage lending, title insurance, rental and leasing, home appraisal, moving and other related activities.
Please see Economic Impact of Real Estate Activity: United States By NAR Research August 2015