Existing home sales explained

What existing home sales measure

NAR’s Existing Home Sales report counts completed transactions on single-family homes, townhouses, condos, and co-ops where the property was occupied or previously sold — not brand-new units sold for the first time. The headline figure is reported as a seasonally adjusted annual rate (SAAR): if the current month’s closing pace continued for twelve months, how many homes would change hands? A print near 4.0 million SAAR means roughly 333,000 homes closed that month before seasonal adjustment.

The release is based on Multiple Listing Service (MLS) closings reported by local Realtor associations and NAR’s internal estimates. It is not the same as the Census Bureau’s new home sales series, which measures contracts signed on newly built units and is far smaller in volume. Confusing the two is one of the most common housing-data mistakes on release day.

What moves the headline number

• Mortgage rates and monthly payment affordability — the dominant cyclical driver for owner-occupiers financing with a 30-year fixed loan.
• Inventory for sale — buyers cannot close on homes that are not listed; low supply caps transaction volume even when demand is latent.
• Household balance sheets and employment — job security and down-payment savings determine who can qualify, especially for first-time buyers.
• Seasonal patterns — spring and summer traditionally see more listings and closings; NAR seasonally adjusts so December and June are comparable.

Existing home sales are a coincident-to-lagging demand indicator: a contract signed in March may not close until May or June after inspection, appraisal, and underwriting. That lag matters when rates move quickly — the closings print can reflect offers made under older, lower rates.

Median price, inventory and months’ supply

Alongside the SAAR sales count, NAR publishes the median existing-home sales price — the midpoint transaction where half of homes sold for more and half for less. Unlike a repeat-sales index (such as Case-Shiller), the median is sensitive to mix shift: if fewer cheap condos trade and more expensive single-family homes close, the median can rise even when each individual property’s price is flat.

Months’ supply — the inventory tightness gauge

Months’ supply equals the number of homes for sale at the current month-end divided by the current monthly sales rate. Rough benchmarks:

• Below 4 months — historically tight; sellers often have pricing power; bidding wars more common in desirable metros.
• 4–6 months — balanced market territory; price growth tends to moderate.
• Above 6 months — buyer-friendly; price cuts and longer days-on-market become widespread.

Inventory is the stock of active listings, not the flow of new construction. When months’ supply is under three but sales are depressed, the story is usually rate lock-in: owners with 3% mortgages refuse to sell and give up that payment, so listings stay scarce and turnover collapses without a price crash. That pattern distinguished 2023–2025 from prior housing downturns where both sales and prices fell together.

Days on market and list-to-sale ratio

NAR also reports average days on market and the share of homes sold above or below list price. Rising days on market with climbing months’ supply is an early sign that the market is shifting from seller to buyer control — often before year-over-year median price growth turns negative.

Pending home sales — the leading indicator

NAR publishes a separate Pending Home Sales Index (PHSI) based on contract signings, not closings. Because signings precede closings by one to three months, pending sales lead the headline existing home sales series at turning points. The index is set to 100 equal to the average contract activity in 2001; readings above 100 mean stronger signings than that baseline after seasonal adjustment.

Practical workflow: if pending sales inflect higher for two consecutive months while closings are still falling, expect existing home sales to stabilize within a quarter — assuming mortgage rates do not spike again and inventory does not dry up completely. Pair PHSI with weekly Mortgage Bankers Association purchase application data for a higher-frequency read between NAR releases.

Existing vs new home sales vs housing starts

Three housing series dominate macro dashboards; each answers a different question:

Existing sales dwarf new sales in unit volume but contribute differently to GDP: new construction feeds residential investment; resale turnover mainly drives broker commissions, legal fees, and moving-related spending in the consumption and services accounts. Weak existing sales can still coincide with firm shelter CPI because rents and owners’ equivalent rent lag turnover and listings.

Mortgage lock-in, affordability and first-time buyers

The mortgage rate lock-in effect became a defining feature of post-2022 housing. Millions of homeowners refinanced or purchased at sub-4% fixed rates. When the 30-year fixed rose above 6–7%, the monthly payment on a comparable home doubled for many buyers — while sellers who would need a new mortgage at market rates had little financial incentive to move. Result: transactions fell toward 4 million SAAR (levels last seen in the 1990s) without the forced selling typical of a credit bust.

NAR breaks out first-time buyer share (historically near 40%; often lower when rates rise and down-payment requirements bite) and all-cash share (rises when financed buyers are priced out). A falling first-time share with rising cash share signals an increasingly unequal market — investors and equity-rich move-up buyers dominate, which has political and banking implications for mortgage origination pipelines.

Affordability math investors actually use

Traders shorthand affordability as payment-to-income: median home price times prevailing mortgage rate, divided by median household income. When that ratio exceeds prior-cycle peaks, expect existing sales to stay weak until rates fall, prices adjust, or incomes catch up. Home prices are sticky downward because lock-in reduces listing supply — so volume adjusts before median price in many cycles.

How investors use NAR release day

Existing Home Sales typically publish around the 20th–22nd of each month at 10:00 a.m. ET for the prior month’s closings — confirm on the economic calendar. Markets compare SAAR sales, median price, and months’ supply to consensus estimates.

Typical asset reactions

• Homebuilder equities (XHB, ITB) — more sensitive to new-home sales and starts; existing sales matter for sentiment and land prices.
• Mortgage REITs and originators — volume-driven; weak closings pressure gain-on-sale margins.
• Banks — purchase mortgage pipelines correlate with pending sales more than same-month closings.
• Treasuries — weak sales plus falling median price growth can support bonds (growth scare); hot prices with low supply can worry inflation hawks.
• Home improvement retailers — turnover drives remodeling; stagnant existing sales slow big-ticket projects even when new construction is firm.

Unlike payrolls, existing home sales rarely move Fed policy in isolation — but persistent weakness alongside rising unemployment feeds recession narratives. Strong sales with tight months’ supply can keep shelter inflation sticky in CPI even when the Fed wants faster disinflation.

Worked example: Harbor Realty release-day read

Harbor Realty operates twelve brokerage offices across the Southeast. Each month the regional economist runs a fifteen-minute NAR release review before the branch managers’ call:

1. Read SAAR closings vs three-month average — if existing sales print below 4.1M and the three-month average is still declining, Harbor cuts Q3 agent recruiting targets by 10%.
2. Check months’ supply and median price YoY — supply at 3.2 months with median price up 4% YoY means sellers retain leverage; Harbor advises listing clients to price within 2% of comps, not chase 2021-style premiums.
3. Pull last pending home sales index — if PHSI rose 2% month-over-month while closings fell, Harbor tells managers closings should stabilize in 60–90 days unless rates spike.
4. Compare to MBA purchase apps and 30-year rate — if apps are flat and rates are 6.8%, Harbor does not expect a V-shaped sales recovery; focus marketing on move-down cash buyers.
5. Log one paragraph for the board — e.g. “EHS 4.05M SAAR (-2.1% m/m). Months’ supply 3.4. Median $412k (+3.8% YoY). PHSI inflected up last month — expect flat closings near term. Maintain agent headcount; defer new office lease.”

Harbor does not trade the release — they use NAR data to set commission forecasts, marketing spend, and hiring before quarterly earnings from national brokerages confirm the trend.

Indicator decision table

Common pitfalls

• Confusing existing and new home sales — different agencies, methodologies, and economic meaning.
• Treating median price as a pure appreciation index — mix shift between regions and property types distorts the median.
• Ignoring months’ supply — low sales with sub-4 months supply is a lock-in story, not necessarily weak demand.
• Expecting closings to react instantly to rate cuts — contract-to-close lag means PHSI and MBA apps lead by weeks or months.
• Equating weak sales with falling home prices — sticky supply can suppress volume before prices decline nationally.
• Overweighting one month — use three-month averages; weather and closing delays add noise.
• Assuming housing weakness guarantees recession — 2023–2024 showed record-low turnover coexisting with strong payrolls.
• Using existing sales to forecast shelter CPI next quarter — shelter CPI follows rents with long lags unrelated to monthly closings.

Investor checklist

• On release day (~21st of month, 10:00 a.m. ET), read SAAR sales, median price YoY, and months’ supply.
• Compare to consensus; note whether the surprise is volume- or price-driven.
• Check prior month pending home sales index for forward direction.
• Cross-reference 30-year mortgage rate and MBA purchase applications from the same week.
• Separate national headline from your regional exposure if you hold homebuilders, banks, or REITs.
• Pair weak existing sales with labor data before assuming broad recession — jobs matter more for NBER dating.
• Log three-month moving average of closings — inflection points beat single prints.

Key takeaways

• Existing home sales count resale closings at SAAR — the bulk of U.S. housing turnover.
• Months’ supply and median price tell you whether the market is tight, balanced, or buyer-friendly.
• Pending home sales and MBA purchase apps lead closings; rate lock-in can depress volume without crashing prices.
• Do not confuse NAR existing sales with Census new home sales or housing starts — each measures a different pipeline stage.
• Weak turnover can coexist with sticky shelter CPI and strong employment — read housing in context, not in isolation.

Related reading

• Housing starts explained — permits, new construction, and the supply side of housing
• Mortgages explained — rates, down payments, and affordability math
• GDP explained — residential investment vs consumption from housing services
• Recession explained — cyclical downturns and when housing weakness matters