If you want to see where the corridor’s supply piled up this fall, look at Herndon’s townhomes — the most inventory the tier has carried in eleven years, meeting the thinnest demand on record. The price held. The terms didn’t.
Data Source: BrightMLS (closed sales & inventory) · Freddie Mac (mortgage rates) · Hud’s Compass proprietary behavioral market intelligence.
Herndon is a workforce-and-first-rung market — a deep townhome and condo middle under a smaller, steadier detached tier, all of it close to the tech corridor. That attached middle is exactly where a wave of new listings, stacked on a long townhome development pipeline, met the most rate-exposed buyer on the corridor this September.
Thirty-year mortgage rates opened 2026 near 6.1%, held around 6.5% through spring, drifted to 6.6% into the fall, then ran from 6.7% to 7.3% inside September. Herndon’s September wasn’t a price story — it was a supply story, concentrated in the attached market, and it moved the terms, not the sign. The homes came to market; the rate-stunned buyer didn’t come with them.
Herndon supply (active) vs. demand (pending) by structure, September 2026. Source: BrightMLS.
The force this month was supply, and it landed on the townhome tier. Active townhome inventory hit 71 — the highest in the eleven-year record, up 92% in a year — while demand per unit of supply fell to its lowest September ever. When the listings surge and the buyers don’t, the price can hold while the terms quietly break. That is precisely what Herndon did: the median barely moved, but 56% of townhome sellers paid a concession to close.
The listings came to Herndon first.
The buyers will too — the only question is the terms.
THE TOWNHOME TIER SET AN ELEVEN-YEAR INVENTORY RECORD
The clearest demand gauge is the contract ratio — pending sales divided by active listings. Above 1.0 is a seller’s market; below it, supply outruns demand.
In Herndon the townhome ratio fell to 0.32, the lowest September in the eleven-year record — demand per unit of supply down 57% in a single year — as active inventory hit 71 and months of supply climbed to 2.81. The condo ratio fell just as hard, to 0.23, another record low. Detached held up better but still softened, its ratio cut roughly in half from a year ago.
Herndon Contract Ratio by structure, a year ago vs. now. Gold line = balance (1.0). Source: BrightMLS.
The split is one of degree, not direction: every tier lost demand, but the attached tiers lost it to records while detached merely cooled.
HUDS COMPASS
NORTHERN VIRGINIA’S
ONLY MARKET INTELLIGENCE INDEX
Conditions data tells you what is coming — supply, demand, the direction of pressure. Anyone with an MLS login can pull it. The Compass tells you why — it reads the behavior behind the closings, scoring four needles from every closed sale. And the read tells you how to act. This month’s Herndon report reads the closed side: the sign price held while more than half of townhome sellers paid at the table.
One teaching point unlocks the rest. Most people watch sale-to-list price — but a list price is just an asking number a seller can type at will. Watch sale-to-assessed instead: the county’s assessed value is a fixed anchor that doesn’t move with a seller’s optimism. When a home clears above assessed with no concession, real demand paid up. When it holds its list price but closes with money back at the table, the asking number was a wish the terms quietly corrected.
Detached — the anchor held
Detached held its value. Resale is up about 1.3% for the year — roughly a third over six years — and the per-foot figure held right alongside it. For an existing owner, the equity from the run is intact.
But read the behavior under the price. The contract ratio fell from 0.98 a year ago to 0.45, demand per unit of supply down 54%; the typical sale slipped just below list for the first time in years; days on market more than doubled; and about a third of sellers paid a concession. The value held — the ease of the sale did not.
Herndon detached supply vs. demand, September 2026. Source: BrightMLS.
Your Herndon detached equity is intact — the quick, clean sale that came with it isn’t.
Townhome — the center of the wave
This is where the fall landed. Active inventory hit 71, the most in eleven years and up 92% from a year ago; months of supply reached 2.81, also a record; and the contract ratio fell to 0.32, the lowest September ever recorded. The published median reads $630,000, but that figure carries new construction — the resale median an existing owner should use is $600,000, essentially flat for the year.
The terms are where the pressure showed. In September 2026, 55.6% of townhome sellers paid a buyer concession — the highest rate in the seven-year record, up from 10.5% a year ago. The price held on the sign; the discount moved to the closing table.
Herndon townhome supply vs. demand, September 2026. Source: BrightMLS.
The price held near ask. The leverage moved to the buyer — at closing.
Condominium — frozen on thin volume
The condo tier nearly stopped. Just six closings in September — the lowest in the eleven-year record — against 43 active listings, pushing months of supply to a record 4.49 and the contract ratio to 0.23, another record low. Six closings is too few to trust a monthly median, so read the year: the resale median sits near $335,000, off about 4% for the year but up 0.4% per square foot.
The takeaway isn’t a price collapse — it’s a demand freeze. Buyers who need a condo have time and leverage they haven’t had in years; sellers who must move will do it on the buyer’s terms.
Herndon condominium supply vs. demand, September 2026. Source: BrightMLS.
The condo didn’t lose its value. It lost its buyers — and the few who are shopping set the terms.
FOR SELLERS
Price to this fall’s Herndon, not last spring’s — and plan to compete on terms.
DETACHED: Your equity is intact, but the premium no longer carries a weak listing. Show well, price to list, and expect to help at settlement.
TOWNHOME: You are listing into record inventory. Build the concession in from the start, and consider leading with a rate buydown over a price cut — it moves a rate-stunned buyer faster.
CONDOMINIUM: This is the thinnest demand on the corridor. Price to the market as it is, expect to give at the table, and don’t read a quiet first week as a pricing mistake — there are simply fewer buyers.
FOR BUYERS
This is the most room attached buyers have had in Herndon in a decade.
DETACHED: Still the firmest tier — compete on price where you must, then ask for help at settlement, because sellers are already giving it.
TOWNHOME: Record inventory, record-low demand, a flat sign price. Ask for the concession — more than half of sellers are already paying one.
CONDOMINIUM: Time is on your side — months of supply at a record. Watch sale-to-assessed, not just sale-to-list, and negotiate the terms hard.
And the rate math: a seller-paid buydown at 7.3% beats an equal price cut on your monthly payment — and if rates ease, you refinance and keep the Herndon home you bought on soft terms.
WHAT’S NEXT
Herndon is where the corridor’s supply wave is clearest — a record of listings meeting a record low of buyers.
CONTRACT RATIO — the demand gauge — fell to eleven-year lows in both attached tiers while detached cooled by half.
Herndon Contract Ratio history by structure. Gold line = balance. Source: BrightMLS.
MONTHS OF SUPPLY — the supply gauge — climbed to records in townhomes (2.81) and condos (4.49) as inventory surged and closings thinned.
Herndon Months of Supply history by structure. Source: BrightMLS.
So how much did prices move this year? Barely. Detached resale held about +1.3% for the year and the townhome median was flat near $600,000; the condo median reads down about 4%, but on six September closings — the per-foot figure (+0.4%) is the truer read. This was a supply wave the price absorbed, not a price decline.
Herndon resale price change by structure, 2026 YTD – median vs. price per square foot. Source: BrightMLS.
In Herndon this September, the listings arrived ahead of the buyers. The sign price held the line — so read the terms, because that is where this market is moving.
COMMON QUESTIONS
Are Herndon home prices going down? Mostly they held. Detached resale value is up about 1.3% for the year, the townhome median is essentially flat near $600,000, and the condo median reads off about 4% — but on very thin volume, and condos are up slightly per square foot. September 2026 was about terms, not price.
Is Herndon a buyer’s or seller’s market right now? It is shifting toward buyers in the attached tiers. Townhome and condo demand per unit of supply both hit eleven-year lows in September 2026, and townhome inventory is up 92% in a year.
Why are Herndon townhomes not selling? Active townhome inventory hit 71 — the most in the eleven-year record — while demand fell to a record low, so months of supply climbed to 2.81. The sign price held, but 56% of sellers paid a buyer concession to close.
Are Herndon townhomes a good buy right now? For a buyer, yes — record inventory, record-low demand, and a sign price that barely moved mean real room to negotiate, most of it at the closing table rather than on the asking price.
Is Herndon detached real estate still strong? The value held — resale is up about 1.3% for the year — but it is no longer effortless. Demand per unit of supply fell 54% in a year, days on market more than doubled, and about a third of sellers paid a concession.
How much are Herndon condos selling for? The resale median is about $335,000, off roughly 4% year to date — though that is on just six September closings, and condos are up slightly per square foot. Months of supply hit a record 4.49.
Want the read on your Herndon home?
Detached, townhome, or condo — each tier is telling a different story this fall, and the real movement is in the terms, not the sign. If you want to know what yours is worth and what the terms really look like, let’s talk.
Michele Hudnall
Real Estate of Northern Virginia | Equity-First Real Estate Strategy
Life Long Northern Virginia Native | 25-Year Reston Resident | HOA Board President, Whitney Park East | South Lakes Drive
[email protected] | 703.867.3436 | RealEstateofNVA.com | @realestateofnva
I help Northern Virginia buyers and sellers make smarter decisions with local market analysis, strategic guidance, and real-world context, not hype headlines.
Disclosure: Michele Hudnall is a licensed real estate agent in Virginia. This post represents her personal analysis and good-faith opinion as a Reston resident and does not constitute legal or financial advice. Full disclosure at RealEstateofNVA.com. All analysis and opinion are my own and based upon local, real-time data. Please consult with a financial or legal professional as required.
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About the data: Sales data from BrightMLS. Mortgage rates from Freddie Mac (FRED series MORTGAGE30US). Compass behavioral scoring methodology from Michele Hudnall’s proprietary intelligence. Price and exit figures exclude new construction; inventory and contract-ratio figures include it.
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