How Do Interest Rates Affect the Housing Market?

Interest rates and the housing market

Most prospective home buyers work with a mortgage lender to finance a home purchase. In fact, according to a U.S. Census statistic in 2020, 64.8% of current homeowners used a mortgage loan to buy their homes.

The mortgage interest rate plays a vital role in most home purchases, often the most significant single investment individuals will ever make.

Why Are Mortgage Interest Rates Important?

To understand the impact of mortgage rates on home buying trends, consider the age-old Economics 101 Supply and Demand relationship. Higher demand and lower supply tend to drive prices higher. Conversely, low demand and higher supply can cause prices to drop.

Consistent with the supply-demand theory, mortgage interest rate changes play a significant role in housing market prices and even the home construction industry.

Interest Rates Impact How Much Individuals Can Afford to Pay for a Home

Interest rates are the cost of borrowing money.

Mortgage loans must be paid back to the lender in preset, usually monthly, amortized increments that include a principal amount and interest calculated over the length of the loan.

During the mortgage loan application process, the lender’s underwriters will assess each prospective borrower’s credit history and calculate affordability statistics like debt-to-income ratio (DTI) to determine the borrower’s ability to manage the monthly debt burden based on their projected income.

When combined with a down payment, the lender’s assessment will calculate a borrowing limit that effectively dictates the maximum amount the prospective borrower can afford.

Impact on Buyer Affordability

Here are two scenarios to demonstrate how affordability changes as mortgage interest rates rise by 2%:

Example 1:

  • Interest Rate: Fixed 30-year: 3.0%
  • Home Value: $250,000
  • Down Payment: 20% = $50,000
  • Borrowed Principal = $200,000
  • Monthly Principal & Interest Payment at 3.0% = $ 21

Example 2:

  • Interest Rate: Fixed 30-year: 5.0%
  • Home Value: $250,000
  • Down Payment: 20% = $50,000
  • Borrowed Principal = $200,000
  • Monthly Principal & Interest Payment at 5.0% = $ 1,073.64

An interest rate change of 2% caused the monthly principal and interest payment to increase by $230.43 per month or $2,765.16 per year.

This difference will disqualify some borrowers and reduce the demand for homes on the market. Over an extended time, the demand reduction can cause a drop in the average selling price of homes.

The differential becomes significantly greater for buyers paying less than a 20% down payment.

Falling Interest Rates Can Increase Demand and Drive Prices Up

An increase in buyers tends to drive market prices up in any market. In other words, as demand increases and outpaces supply, prices rise.

In a low-interest rate environment, more buyers qualify to buy a home, eventually driving higher demand, resulting in higher prices.

Rising Interest Rates Can Decrease Demand and Drive Prices Lower

When interest rates rise substantially, fewer qualified buyers become available to buy a home resulting in lower demand and lower prices.


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DaVodis Bowman

Real Estate

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