Marriottsville 21104
Howard County, MD · 2,370 properties · updated 7/5/2026
Should you buy here?buyer-timing lens
64affordability /100
Buyer leverage is seller advantage; weigh payment burden and the 3-lens valuation before bidding.
Payment burden
22.1%
affordable
Days on market
5
daily
Price cuts
0.0%
of active
Valuation
-36.9%
vs assessor
71
/100
stable
stable · seller advantage · prices rising 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
Seller's Market
DOM: 64d (falling) · Market Dynamics rolling median · hourly
Score Components
Payment Burden (25%)0
Valuation Gap (25%)40
Supply & Demand (20%)20
Cancellation Rate (10%)0
Days on Market (5%)75
Seller-favored market in 21104. Expect to pay at or near list price. Payment burden: 22.2% of median income. Median days on market: 64.
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 ADVANTAGE
Market is holding steady with balanced conditions. Sellers are firmly in control.
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Market snapshoteach number, once
Median price
$729,934
▴ 0.5% YoY
Days on market
5
daily · zip_data
Median rent
$1,920
county avg
Investor score
31/100
cash-flow lens
Active listings
8
90-day
Valuation3 lenses, different anchors
vs assessor
-36.9%
Market vs assessed value — a tax-roll lag, not a deal signal.
Avg assessor$460,500
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%
Carroll+49.7%
Lotvox comps · mv_valuation_gap
Read together: Above county comps but sustainable on local incomes.
Pricing detail
Price / sqft$235
Price-to-income3.6×
How 21104 ranks in MD
percentile vs all MD ZIPs
Comparative ranking not available for this ZIP.
Affordability, supply & momentum
82SUPPLY
Severe TightnessSupply Tightness
Very tight supply — well-priced homes attract multiple offers within days.
Months of Supply3.0 mo
Days on Market5d
Inv vs History+1.9%
Listing Density--
Market dynamics
Price cut %0.0%
Momentumstable
LeverageSELLER ADVANTAGE
Months of supply3
Sales (90d)0
Investment analysis
Median rent$1,920
Price-to-rent31.7
Est. cap rate1.9%
Buy vs rentfavors renting
Livability
Walk score1
Transit score1
Bike score—
Historical trends
Howard County contextmacro · jobs · debt · migration
ZIP score grades housing; county score adds macro distress (jobs, debt, poverty). They answer different questions.