Fairfax County's housing market crossed a milestone in July, with total sales volume hitting $1.031 billion for the first time as the county's two-tier split deepened: wealthy buyers in McLean kept writing seven-figure checks while rising mortgage rates squeezed first-time buyers countywide.

The 1,148 homes that closed in July were up just 0.4% from a year earlier, but total dollar volume rose 1.8%, according to Bright MLS data reported Tuesday, Aug. 11. The countywide average sale price climbed 2.1% to $898,670, while the median fell 1.2% to $755,448, according to the Bright MLS monthly report. That divergence signals high-end transactions pulling the average up while moderate-priced homes stalled.

"The resilient Washington, D.C. area housing market has been fueled by active high-end buyers who are less rate and price sensitive," Bright MLS chief economist Lisa Sturtevant said in the Aug. 11 data release. "More moderate-income and first-time buyers are feeling the pinch from rising mortgage rates and economic uncertainty."

McLean's $2 million average

McLean sits at the extreme end of that divide. The average house price in McLean reached $2.08 million as of early August, up 38.3% year over year, with homes averaging 19 days on market and regularly drawing multiple offers, according to TysonsToday's August market wrap.

In the second quarter, McLean's 22101 ZIP code led the entire Mid-Atlantic in luxury sales. Seventy-six of 144 transactions exceeded Bright MLS's $1.9 million luxury threshold, and the priciest sale in the region closed at 1169 Crest Lane for $12.845 million on April 14, FFXnow reported.

Great Falls buyers face a different pace. Median prices there hover around $1.67 million, but homes sit 40 to 75 days on market, with the buyer pool skewing heavily toward cash and large down payments, according to TysonsToday.

Rates hit 2026 high

The headwind for everyone else: the 30-year fixed mortgage rate climbed to 6.69% for the week ending Aug. 6, a new 2026 high and the first time in 44 weeks that rates exceeded year-ago levels, according to Freddie Mac data reported by Realtor.com. The Federal Reserve held its benchmark rate steady at its July meeting in a 9-3 vote, with three regional presidents dissenting in favor of a hike.

Sturtevant warned that rates could climb further into the fall, potentially slowing third-quarter sales activity.

Inventory rising, but slowly

Sellers are listing more homes.

Active inventory countywide stood at 2,035 at the end of July, up 20% from a year earlier, representing about two months of supply. New listings totaled 1,144 in July, up 9.3% year over year.

Single-family homes averaged $1,208,722, up 3.2%. Attached homes (townhouses and condos combined) averaged $569,659, down 0.2%. Condos alone averaged $435,353, up 2%, though the broader DC metro condo segment showed stress with days on market rising to 30 and active listings surging 23.7%.

Homes that closed in July sold for 99.1% of list price, up from 98.7% a year earlier, and spent an average of 20 days on market. All July figures are preliminary and subject to revision.

The next monthly Bright MLS data release, covering August 2026 transactions, is expected in mid-September.