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
New-Home Mortgage Demand Slips Despite Widespread Builder Incentives

Applications fell 5.7% annually in July, while government-backed mortgages accounted for half of builder-affiliated loan volume

Aug 21, 2026
Fannie Mae Returns To Distressed-Loan Market With $214 Million Sale

The agency’s first nonperforming-loan offering in 13 months transfers 969 deeply delinquent mortgages to private buyers, including a small pool concentrated in Dallas-Fort Worth

Aug 20, 2026
Summer Rate Spike Knocks Pending Home Sales To Six-Month Low

Contract signings fell in every region during July, leaving purchase activity 30% below its 2019 level despite a larger workforce

Aug 19, 2026
Cash Sales Retreat, Giving Financed Buyers More Room To Compete

Cash transactions fell faster than the broader housing market in early 2026, but buyers without financing still accounted for nearly one-third of home sales

Aug 19, 2026
Mortgage Delinquencies Ease, But FHA Distress Keeps Deepening

Overall delinquencies dipped in the second quarter, but FHA serious delinquencies jumped 227 basis points from a year earlier as more troubled loans moved toward foreclosure

Aug 18, 2026
Credit-Score Choice Is Becoming Part Of The Mortgage Sales Pitch

One-third of consumers say they would consider switching lenders over older scoring models, making underwriting technology a potential borrower-retention issue

Aug 18, 2026