Gaithersburg 20879

Montgomery County, MD · 8,531 properties · updated 7/5/2026

Should you buy here?buyer-timing lens

58affordability /100

Buyer leverage is seller slight; weigh payment burden and the 3-lens valuation before bidding.

Payment burden
25.8%
affordable
Days on market
30
daily
Price cuts
18.7%
of active
Valuation
-9.8%
vs assessor
Look up an address
64
/100
stable
stable · seller slight · prices easing year-over-year.

Verdict grades housing conditions; buyer-timing, investor cash-flow, supply-tightness and county macro scores answer different questions — each in its own section.

Buyer / sellerbuyer-timing lens

36/ 100SellerBalancedBuyer
Seller's Market
DOM: 51d (rising) · Market Dynamics rolling median · hourly
Score Components
Payment Burden (25%)25
Valuation Gap (25%)10
Supply & Demand (20%)85
Buy vs Rent (15%)50
Cancellation Rate (10%)0
Days on Market (5%)60

Seller-favored market in 20879. Expect to pay at or near list price. Payment burden: 25.8% of median income. Median days on market: 51. Renting is approximately 34% cheaper than buying (price-to-rent ratio: 16.1).

Buyer Caution

Seller's market. Be prepared to pay near list price.

Competitive market similar to 2021-2022 — limited inventory driving prices above fundamentals.
STABLESELLER SLIGHT

Market is holding steady with balanced conditions. Sellers hold a slight edge. Prices down 1.7% YoY.

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Market snapshoteach number, once

Median price
$447,161
▾ 1.7% YoY
Days on market
30
daily · zip_data
Median rent
$2,315
ZORI
Investor score
62/100
cash-flow lens
Active listings
43
90-day

Valuation3 lenses, different anchors

vs assessor
-9.8%
Market vs assessed value — a tax-roll lag, not a deal signal.
Avg assessor$403,500
county CAMA · properties_v
vs income
—
Fair-value model not available for this market.
fair_value_scores · 10-state coverage
vs county comps
+36.8%
County-wide market — the widest, slowest signal.
Montgomery+36.8%
Lotvox comps · mv_valuation_gap
Read together: Above county comps but sustainable on local incomes.
Pricing detail
Price / sqft$453
Price-to-income4.3×

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How 20879 ranks in MD
percentile vs all MD ZIPs
Comparative ranking not available for this ZIP.

Affordability, supply & momentum

35SUPPLY
BalancedSupply Tightness

Supply and demand are roughly even — standard negotiation dynamics.

Months of Supply10.0 mo
Days on Market30d
Inv vs History+18.9%
Listing Density--
Market dynamics
Price cut %18.7%
Momentumstable
LeverageSELLER SLIGHT
Months of supply10
Sales (90d)0
Investment analysis
Median rent$2,315
Price-to-rent16.1
Est. cap rate4.0%
Buy vs rentneutral

Livability

Walk score3
Transit score20
Bike score—

Historical trends

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Montgomery County contextmacro · jobs · debt · migration

ZIP score grades housing; county score adds macro distress (jobs, debt, poverty). They answer different questions.

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Washington DC Metro·Overpriced ZIPs·Investor ZIPs·View on Map·Montgomery County