Marriottsville 21163

Baltimore County, MD · 1,893 properties · updated 7/5/2026

Should you buy here?buyer-timing lens

50affordability /100

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

Payment burden
30.4%
stretched
Days on market
34
daily
Price cuts
0.0%
of active
Valuation
-52.5%
vs assessor
Look up an address
49
/100
mixed
stable · balanced · 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

38/ 100SellerBalancedBuyer
Seller's Market
DOM: 8d (stable) · Market Dynamics rolling median · hourly
Score Components
Payment Burden (25%)50
Valuation Gap (25%)40
Supply & Demand (20%)40
Buy vs Rent (15%)50
Cancellation Rate (10%)0
Days on Market (5%)0

Seller-favored market in 21163. Expect to pay at or near list price. Payment burden: 30.4% of median income. Median days on market: 8. Renting is approximately 28% cheaper than buying (price-to-rent ratio: 15.4).

Buyer Caution

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

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

Market is holding steady with balanced conditions. Conditions are balanced between buyers and sellers.

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Market snapshoteach number, once

Median price
$658,120
▾ 0.5% YoY
Days on market
34
daily · zip_data
Median rent
$3,550
ZORI
Investor score
67/100
cash-flow lens
Active listings
12
90-day

Valuation3 lenses, different anchors

vs assessor
-52.5%
Market vs assessed value — a tax-roll lag, not a deal signal.
Avg assessor$312,800
county CAMA · properties_v
vs income
—
Fair-value model not available for this market.
fair_value_scores · 10-state coverage
vs county comps
+43.7%
County-wide market — the widest, slowest signal.
Howard+43.7%
Lotvox comps · mv_valuation_gap
Read together: Above county comps but sustainable on local incomes.
Pricing detail
Price / sqft$223
Price-to-income5.0×

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How 21163 ranks in MD
percentile vs all MD ZIPs
Comparative ranking not available for this ZIP.

Affordability, supply & momentum

55SUPPLY
Tight MarketSupply Tightness

Supply is below normal — sellers are favored but buyers still have options.

Months of Supply5.5 mo
Days on Market34d
Inv vs History+13.7%
Listing Density--
Market dynamics
Price cut %0.0%
Momentumstable
LeverageBALANCED
Months of supply5.5
Sales (90d)0
Investment analysis
Median rent$3,550
Price-to-rent15.4
Est. cap rate4.2%
Buy vs rentneutral

Livability

Walk score5
Transit score7
Bike score—

Historical trends

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Baltimore 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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Nearby ZIP codes

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Baltimore Metro·Overpriced ZIPs·Investor ZIPs·View on Map·Baltimore County