Housing Affordability Slumps in May, Says First American Real House Price Index – NMP Skip to main content

Housing Affordability Slumps in May, Says First American Real House Price Index

Jul 31, 2023
Home affordability
News Director

Mortgage rates reduce buying power by 0.7%

Housing affordability in the U.S. fell in May, driven by a reduction in house-buying power as a result of increased nominal house prices and mortgage rates, according to the May 2023 First American Real House Price Index (RHPI) released today.

The RHPI, which measures the price changes of single-family properties throughout the U.S., showed that real house prices increased by 1.3% between April and May 2023, and 11.7% year over year. Meanwhile, consumer house-buying power decreased 0.7% over the month and 9% year over year.

According to Mark Fleming, chief economist at First American, nominal house price growth ticked up 0.6% compared with April, and the average 30-year, fixed mortgage rate increased by 0.08 percentage points. The median household income rose 0.2% compared with April, but it was not enough to offset the decrease in affordability.

Boom-Bust? 

The RHPI breaks down the top 50 U.S. markets into four categories: boom-bust; boom-no bust; no boom-bust; and no boom-no bust.

Boom-Bust: Phoenix and Austin are prime examples, with house prices having increased 65% from February 2020 to the peak in May 2022 before declining 9.5%.

Boom-No Bust: Miami and Tampa fall into this category, with house prices yet to decline in Miami and only down 1% in Tampa.

No Boom-Bust: Concentrated on the West Coast, including San Jose, San Francisco, and Seattle. These markets saw less than the average growth rate of 44% across top markets putting them in the ‘no boom’ category.

No Boom-No Bust: New York, Boston, and Chicago experienced muted pre-pandemic-to-peak growth. “House prices have not yet declined in New York, in part because there was less of a boom during the pandemic, as many residents flocked to the suburbs from the density of the city,” Fleming said.  

May 2023 Highlights

Real house prices are 36.6% more expensive than in January 2000. Unadjusted house prices are now 51.2% above the housing boom peak in 2006. Five states with the greatest year-over-year increase in RHPI: Illinois (+19.4%), New Hampshire (+18.9%), New Jersey (+18.8%), Wisconsin (+18.5%), and Maryland (+17.6%).

Recent data hints that house prices may be past the trough, but Fleming cautioned, “It’s too soon to make the call that house prices have bottomed.” Higher mortgage rates continue to pressure affordability, and further adjustments to house prices may be needed.

The May 2023 RHPI paints a complex picture of the housing market. Although some markets continue to thrive, others face challenges as increased house prices and mortgage rates affect affordability. The index underscores the nuanced nature of real estate trends, with significant variation by market.

About the author
Christine Stuart is the news director at NMP.
Published
Jul 31, 2023
Higher Mortgage Rates Shrink Purchase Demand, Expand Buyer Leverage

Pending sales fell to their lowest level since early April, but lower asking prices and reduced competition give originators more options to structure deals for qualified borrowers

Jul 31, 2026
Even Stable Public-Service Careers No Longer Guarantee Homeownership

Younger teachers, health care workers, first responders, and military households can afford median-priced homes in only a fraction of major metros

Jul 31, 2026
Buyers Gain Negotiating Power In 41 Major Housing Markets

Price cuts and longer listing times are creating opportunities for loan officers to help borrowers negotiate seller concessions, but leverage varies sharply by metro

Jul 30, 2026
Fannie Mae Purchase Volume Jumps 33% In Second Quarter

The GSE financed 201,000 home purchases, while appraisal alternatives pushed estimated borrower closing-cost savings to $3 billion

Jul 29, 2026
Second-Home Lending Grows Faster Than Primary-Home Market

Vacation-home mortgages rose 4.1% in 2025, led overwhelmingly by affluent borrowers

Jul 28, 2026
Credit Score Battle Picks Up Speed With FICO, VantageScore Gains

FICO 10T enrollment tops 70 lenders while VantageScore 4.0’s presence in TransUnion mortgage credit pulls jumps from less than 5% to roughly 30%

Jul 28, 2026