Data and Methods
To assess the economic contributions of the residential real estate industry in Northern Virginia, we use an input-output analysis reflecting interindustry transaction trends, jobs supported by those transactions, and then local spending associated with employee earnings for 2021. This is a comprehensive approach that incorporates a wide range of economic sectors that are impacted by the housing industry. Some elements, such as construction of single- or multifamily homes, are obvious. Other sectors include services that are less visible but are critical to the residential real estate industry, such as attorneys who work in residential real estate transactions, loan officers who review mortgage applications, maintenance services for apartment buildings, and a range of other industries.[5] We are also including the development and management of rental properties.
Figure TA1. Industries Included in the Contribution Analysis
- Construction: Single-family housing, multifamily housing, manufactured and mobile homes, as well as home renovation and repair.
- Finance: Banks, other lending institutions (real estate), mortgage brokers.
- Insurance: Property insurance carriers and brokers, title insurance.
- Transport: Household moving services.
- Agencies: Non-profit housing agencies and related groups, including Realtor® associations.
- Real Estate: Brokers, property managers, inspectors, appraisers, lawyers, and title companies.
- Retail Trade: Household furnishings, building materials, home centers (DIY only), appliances
- Services: Household services including design services, security systems, pest control, janitorial services, landscaping, waste collection, furniture and appliance repair, homeowners' associations, household domestic staff.
Sources of data used in this analysis include the Bureau of Labor Statistics, Bureau of Economic Analysis, IBIS World industry market database, and Chmura Economics. Contribution analyses estimate the direct, indirect, and induced effects of the subject industry. Direct effects are the economic consequences resulting from the spending by the housing industry itself. For example, a housing developer hires professional services providers architects, engineers, others) and trades contractors to build residential units. Indirect effects capture the business-to-business purchases representing the residential construction supply chain including the purchase of materials and leasing heavy equipment such as backhoes and earthmovers. The firm that leaves out heavy equipment buys the equipment, hires employees, purchases parts to keep the equipment operating, and hires professional services providers to support their business operations. These professional services providers, like accountants, temporary employment agencies and such, rent office space, hire employees purchase office supplies, and hires their own services providers, and so on. At each stage of spending, the economic input-output model adjusts the spending to only count business activities within the study area. For example, purchased fuel to run construction equipment is not refined in Northern Virginia, so little of that spending supports local economic activity – except for delivery and sellers. Induced effects capture the economic value of the spending of labor earnings by employees of all the direct and indirect businesses for goods and services in Northern Virginia. Even when adjusting for spending that leaves the study area, the sum of the direct, indirect, and induced effects is typically greater than the direct spending, which is the “multiplier effect.”
The analysis presented here is based on the IMPLAN economic input-output model, which is widely used in professional and academic research. The IMPLAN model provides estimates of total output (value of transactions), value added (gross regional product), labor income (salaries, wages, and benefits), and jobs (headcount). The model also estimates revenue to local taxing jurisdictions including sales and use taxes, fees for licenses and permits, and other sources of government revenue resulting from the economic activity. Local taxes, for this purpose, does not fully include property taxes based on the market value of the existing housing stock, except that supported by industry transactions.
The analysis presented in this report includes an important adjustment. When examining the simultaneous impacts of multiple industries, input-output modeling is susceptible to double counting. The employees and owners of a home builder are themselves consumers of housing and the many services that support residential real estate that is captured as Induced Effects. Therefore, we adjust the Induced Effects to avoid double counting industry employee spending. The approach taken in making these adjustments is conservative, meaning that our estimates of the total economic contributions of the housing industry in Northern Virginia are likely understated.
The methodology employed in this analysis follows our approach used in our 2021 report of the impacts of the housing industry in the Commonwealth of Virginia prepared for the Virginia Association of REALTORS®. That report includes a technical appendix detailing key methods and assumptions and can be found on the CRA or VAR websites.[6]
The Northern Virginia Association of REALTORS’ primary service area includes the City of Alexandria, Arlington County, Fairfax County, City of Fairfax, and the City of Falls Church. However, in understanding how the housing industry contributes to regional economic activity, it is important to consider the wider market of Northern Virginia including NVAR’s area plus Loudoun County, Prince William County, and the cities of Manassas and Manassas Park. The analysis presented below includes analyses at both levels of geography.
[5] There are two important economic elements that are not included in this analysis. In national product tables, which show estimates of all U.S. economic activity, there is an accounting entry for the “Imputed Value of Homeownership.” If a household owns a home outright, there is a recurring economic value to their home that is not captured by business transactions. The Imputed Value of Homeownership estimates the cost to the household if they were paying rent to themselves and this value is included in Gross Domestic Product. Since there is no actual transaction, this value is not included in this analysis. Also excluded is the economic value of Freddie Mac, even though that government enterprise is headquartered in Northern Virginia it was not possible to show how many employees at Freddie Mac are dedicated to serving loans for homes in the study area.
[6] www.cra.gmu.edu https://virginiarealtors.org