Market Economics
Housing Affordability: Understanding the Crisis and Its Impact
Housing affordability measures whether typical households can afford typical homes in their market. When affordability erodes — as it has dramatically since 2020 — it reshapes who can buy, where they live, and how real estate professionals must structure their advice.
How Affordability Is Measured
NAR Affordability Index
Measures whether a median-income family can qualify for a mortgage on a median-priced home. Index of 100 = exactly affordable. Above 100 = more affordable; below 100 = less affordable. The index fell below 100 for the first time in decades in 2022.
Housing Cost Burden
Households spending 30%+ of gross income on housing are 'cost-burdened.' Those spending 50%+ are 'severely cost-burdened.' HUD and the Census track this by metro area. Agents should know the burden rate in their market.
Price-to-Income Ratio
Median home price ÷ median household income. Historically 3–4×. By 2022–2023, national ratios reached 5–7× in many metros. San Francisco, NYC, and LA exceed 10–15×. Higher ratios mean longer time to save for a down payment.
What Caused the Affordability Crisis
The 2020–2023 affordability collapse was caused by a once-in-a-generation convergence: pandemic-era remote work drove urban buyers to suburban and sunbelt markets simultaneously, pandemic stimulus increased buyer purchasing power, and the Fed held rates near zero through mid-2022. Home prices rose 40–50% nationally in 2–3 years.
Then the Fed raised rates from near zero to over 5% in 18 months — the fastest tightening cycle in 40 years. This doubled monthly mortgage payments. A $400,000 home at 3% = $1,686/month P&I. The same home at 7.5% = $2,797/month. Monthly cost rose 66% while incomes grew perhaps 15% over the same period.
Solutions Agents Use to Help Buyers
Seller-paid rate buydowns: seller pays 1–3 points to reduce buyer's rate
Down payment assistance programs (state and local HFAs, FHA, USDA)
Adjustable-rate mortgages for buyers who plan to refinance or move in 5–7 years
Expanding the search radius to adjacent, more affordable submarkets
Exploring emerging markets where price-to-income ratios are lower
Shared equity programs (city/county down payment matching)
Accessory dwelling unit strategies to offset carrying costs with rental income
New construction with builder incentives (often more negotiable than resale)
Affordability FAQ
What percentage of income should go to housing?
The traditional guideline is 28% of gross monthly income for housing costs (PITI: principal, interest, taxes, insurance). Total debt (including student loans, car, credit cards) should be under 43% for most conventional loans — this is the debt-to-income (DTI) ratio limit most lenders use.
Which cities are most and least affordable?
Least affordable: San Jose, San Francisco, Los Angeles, New York, Honolulu — all with price-to-income ratios exceeding 10×. Most affordable for median incomes: Detroit, Cleveland, Pittsburgh, Indianapolis, Memphis — ratios of 3–4×. The Sun Belt metros (Austin, Phoenix, Nashville) moved from affordable to borderline unaffordable during 2020–2022.
How does affordability affect agent business?
Low affordability reduces transaction volume as potential buyers are priced out. Agents pivot to rentals, investors, luxury clients (who are rate-insensitive), and relocation buyers moving from high-cost to lower-cost markets. Markets with affordability challenges also see demand for ADU and co-living property types.
Will affordability improve?
Affordability improves when incomes rise, home prices fall, or mortgage rates decline — or some combination. Historically, affordability cycles improve slowly through income growth and gradual price resets rather than sharp price crashes, which are relatively rare absent a recession or credit crisis.