ZIP CODE 21234 // BALTIMORE-COLUMBIA-TOWSON, MD // DATA AS OF 2026-09-30
Parkville, MD (21234) Rental Property Cap Rate & Cash Flow Report
Located in Baltimore County (Parkville, MD), Zip Code 21234 ranks #122 of 500 within this selected sample (76th percentile) with a Zillow ZHVI typical home-value index of $300,360 (-0.7% YoY) and a ZORI observed market rent of $1,621/mo (+3.3% YoY). Requires at least 45.1% down payment at 6.5% interest to reach $0/mo break-even cash flow. This model combines different housing populations; it is not an observed average property return. Costs assume state-average tax, 0.5% annual insurance, 13% reserves and no HOA or management. Figures below follow your edits; this headline describes the original benchmark.
Net Monthly Cash Flow
-$476/mo
Annual: -$5,717/yr
Modeled Cap Rate
4.16%
NOI: $12,508/yr
Cash-on-Cash Return
-8.28%
Cash Needed: $69,083
1% Rule Ratio
0.54%
Gross Yield: 6.48%
Break-Even Rent
$2,169/mo
State Tax: 0.97%/yr
INTERACTIVE PRO-FORMA STATEMENT (ZIP 21234 BENCHMARK)
Edit any value
Purchase Price (ZHVI proxy)
Monthly Gross Rent (ZORI proxy)
Down Payment (%)
Interest Rate (30Y Fixed %)
Annual Property Tax (MD Avg 0.97%)
Annual Home Insurance ($)
Monthly HOA Fee ($)
Monthly Debt Service (P&I)
-$1,519/mo
Monthly Operating Expenses (Tax + Ins + 13% Reserves)
-$579/mo
HISTORICAL ZHVI PRICE VS. ZORI RENT TRAJECTORY (21234)
| Year | ZHVI Value | ZORI Rent | Gross Yield |
|---|---|---|---|
| 2021 | $263,335 | $1,330/mo | 6.06% |
| 2022 | $278,866 | $1,414/mo | 6.08% |
| 2023 | $285,760 | $1,436/mo | 6.03% |
| 2024 | $294,582 | $1,482/mo | 6.04% |
| 2025 | $302,459 | $1,569/mo | 6.22% |
| 2026 | $300,360 | $1,621/mo | 6.48% |
COMPARABLE U.S. RENTAL MARKETS
| Zip / City | Price | Rent | Cap Rate | Cash Flow |
|---|---|---|---|---|
| 21122 Pasadena, MD | $450,783 | $2,538/mo | 4.41% | -$624/mo |
| 21117 Owings Mills, MD | $384,367 | $1,877/mo | 3.63% | -$781/mo |
| 20874 Germantown, MD | $408,788 | $1,994/mo | 3.62% | -$833/mo |
| 21740 Hagerstown, MD | $288,533 | $1,328/mo | 3.33% | -$657/mo |
| 20906 Silver Spring, MD | $436,799 | $1,979/mo | 3.26% | -$1,022/mo |
| 20878 Gaithersburg, MD | $680,693 | $2,384/mo | 2.19% | -$2,202/mo |