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421 N Castle St
B- Composite 67.87
Why this score? — see what drove the B- grade

The composite is a weighted blend of 9 inputs, each scored 0–100. Each bar is that input's sub-score; the figure is the points it added to the 100-point composite (weight × sub-score).

  • Cash flow +30.0/30.0
  • 1% rule +10.0/10.0
  • DSCR +10.0/10.0
  • ARV discount +7.5/15.0
  • Livability +3.8/5.0
  • Rent growth +3.1/5.0
  • Condition / age +2.5/5.0
  • Schools +1.0/10.0
  • Appreciation +0.0/10.0

$69,900

421 N Castle St · Baltimore, MD 21231
2 bd · 1.5 ba · 1,212 sqft · Townhouse public records · 8 Days on market
Built 1900

🖨 Deal sheet (PDF) 📄 Offer letter ✓ Due diligence

Listing remarks

Walking distance to Johns Hopkins! NOT AN AUCTION, NOT A SHORT SALE, NOT A BANK OWNED, NOT A FORECLOSURE, NOT WHOLESALING---QUICK AND EASY. BUYER TO PAY ALL TRANSFER AND RECORDING FEES.

Key facts

  • Built 1900
  • Listed 8 days

Property features AI

Finance

  • Financial info: Land assessed separately from improvements; Improvement assessed value reported; Tax assessed value and 2018 tax information available

Exterior

  • Utilities: Public water; Public sewer; Hot water: other
  • Home design: Interior townhouse/rowhouse; Fee simple ownership; Property needs major rehabilitation
  • Construction: Brick construction; Brick/mortar foundation; Other structures above and below grade
  • Exterior features: Not in a federal flood zone; No tidal water

Interior

  • Bedrooms: Two bedrooms on the main level
  • Bathrooms: One full bathroom (one full on main level)
  • Interior features: Estimated living area; Basement present (other type)

Neighborhood map

Property Rental comp Retail Transit Schools Stadiums Fortune 500 · Circle radius: 3.0 mi
Loading POIs…

What this means for you Summary

Snapshot

  • This is a 2-bed/1.5-bath townhouse listed at $70k.

Deal economics

  • At list price, monthly cash flow is $842 ($10k/yr) — positive.
  • The deal already cash-flows at list — no discount required.
  • Meets the 1% rule at list price ($2k rent vs $70k).
  • Cap rate 20.7% vs local median 6.0% in Baltimore — top-decile yield for the area; either an underpriced asset or a hidden risk that comps aren't pricing in. Stress-test before assuming the spread holds.

Location & tenants

  • Location reads 76/100 on livability (#90 in MD, #3,396 nationally) — a middle-class / working-renter tenant base. Strengths: amenities A+, commute A+, housing A+; Watch: schools D, crime F.
  • Baltimore City Public Schools (urban): math 7% / reading 16% proficiency, ranked #24 of 24 in MD (top 100%) — low school quality limits family demand, transient renter base, plan for 1-2y turnover; 79% free/reduced lunch — lower-income household profile, screen leases tightly.
  • Market conditions: Rents rising (+2.3%/yr); 131 active listings in the ZIP; 40 comparable units currently listed for rent nearby; rentals lingering (median 44d on market — plan ~5-8 weeks vacancy on turnover, expect pricing pressure); 50% of comp listings sitting > 30 days — soft ceiling on asking rent; solid renter incomes; 1,273 units permitted in Baltimore city in 2024 (1,104 in 5+ unit buildings).

Forward outlook

  • Local home prices are declining (-3.0%/yr); year-one equity from $483 of loan paydown is wiped out by about $2k of value loss. Plan a longer hold.
  • Baltimore County population projected to shrink 4% by 2050 — rents likely to lag national; underwrite the cash flow, not the appreciation.
  • At projected returns (-3.0% appreciation + 2.3% rent growth), your $20k cash investment doubles in ~3 years — after that, you're playing with house money.

Negotiation context

  • Only 8 days on market — expect competitive offers; lowballing is unlikely to land.
  • 2 sale attempts since 8y ago with the ask held roughly flat each time — persistent listings suggest the price (not the market) is what's stuck; bring a comps-based counter.

Risks & watch-outs

  • Watch-outs: property tax is 3.9% of price; built in 1900 — expect roof / HVAC / electrical / plumbing capex.
  • Climate carrying-cost: major wind risk, 27% chance of damaging wind over 30y; extreme-heat days projected 7→15/yr by 2055 (HVAC capex compounding) — expect insurance premiums to compound above CPI over the hold.
Recommended offer $69,900

Questions for the listing agent

  1. Built in 1900 — when were the roof, HVAC, electrical panel, plumbing, and water heater last replaced?
  2. Property tax is high relative to price — has the assessment been appealed recently, and will the sale trigger a re-assessment?
  3. Is there a deadline driving the sale (1031 exchange, divorce, estate, relocation)? That informs how much negotiation room exists.
  4. Schools are D-rated, which usually means shorter tenancies and higher turnover. Who's the typical renter profile here, and what's been the actual vacancy rate?
  5. Crime grade is F in this area — have there been break-ins, vandalism, or insurance claims at this property in the last 3 years? What carrier currently insures it and at what premium?
  6. What's the average days-on-market for RENTAL listings here right now (not sales)? A rising rental-DOM trend means longer vacancies and softer asking-rent achievability than the comps imply.
  7. What's the recent tenant-quality profile in this submarket — average credit score on applications, eviction rate, late-payment / NSF rate, and stable-employment percentage? A property-management company in the area should have these aggregated.
  8. How much new for-sale + rental construction is in the pipeline within 1–3 miles? Heavy new supply typically softens prices + rents 12–24 months out; constrained supply supports both.

Investment metrics

1% rule
2.65%
Cap rate
20.75%
Cash-on-cash
51.63%
DSCR
3.30
GRM
3.1

CMA / ARV

ARV (on-the-fly)
$193,920
Comps found
12
Show comp detail 12 sales within ~0.75 mi
Address Dist Beds/Ba Sqft Sold Price $/sf Match
410 N Chester St 0.03mi 2/1.5 1,260 (+4%) 1mo $180,000 $143 92
410 N Patterson Park Ave 0.17mi 3/1.0 (+1) 1,180 (-3%) 0mo $180,000 $153 80
2435 Jefferson St 0.31mi 3/1.0 (+1) 1,260 (+4%) 1mo $140,000 $111 71
325 S Castle St 0.61mi 2/1.5 1,196 (-1%) 0mo $275,000 $230 69
2317 E Fayette St E 0.26mi 3/1.5 (+1) 1,315 (+8%) 1mo $210,000 $160 68
145 N Milton Ave 0.38mi 2/2.0 1,353 (+12%) 1mo $260,000 $192 60
134 N Curley St 0.69mi 2/2.0 1,170 (-4%) 1mo $270,000 $231 59
2712 Ashland Ave 0.61mi 3/1.5 (+1) 1,164 (-4%) 1mo $175,000 $150 59
629 N Kenwood Ave 0.59mi 2/1.5 1,100 (-9%) 1mo $76,500 $70 56
220 N Luzerne Ave 0.41mi 3/1.0 (+1) 1,372 (+13%) 1mo $120,000 $87 51
1009 N Washington St N 0.46mi 2/2.5 1,386 (+14%) 0mo $235,000 $170 50
14 S Curley St 0.75mi 2/1.0 1,092 (-10%) 1mo $269,000 $246 46

Match score weights: distance 35% · size 25% · config 20% · recency 20%. Top-matched comps best support the ARV.

Projected returns pro-forma

-3.0% appreciation · 2.26% rent growth · sell at horizon

5-year hold
IRR
48.7%
Equity multiple
3.10×
Total profit
$41,046
Equity at exit
$10,422
10-year hold
IRR
53.9%
Equity multiple
6.10×
Total profit
$99,723
Equity at exit
$6,044

Cash invested: $19,572 (down + closing). Projections, not guarantees.

Landlord ↔ Tenant lean methodology

Overall (CITY)
12 Strongly Tenant-Friendly
State Maryland
27 Tenant-Leaning · D+14
County
— inherits STATE
City Baltimore
12 Strongly Tenant-Friendly · D+58
Just-cause for tenancies > 1 yr.

ZIP-level market 21231

Rents YoY
2.3%
Active inventory
131
Price-to-rent
3.1×

Monthly cashflow live

Estimated rent
$1,851 high interval (Pro) →
Mortgage (P&I)
$367
Tax from tax record
$224 /mo · $2,692/yr
Insurance
$29
HOA
$0
Vacancy / Maint / Mgmt
$389
Net cashflow
$842

Break-even live

Break-even rent $785
Max offer price $69,900
Occupancy floor 50%

Sensitivity live

Price -10% $882 -5% $862 +0% $842 +5% $822 +10% $802
Rent -10% $696 -5% $769 +0% $842 +5% $915 +10% $988
Rate -1.0pp $877 -0.5pp $860 base $842 +0.5pp $824 +1.0pp $805

UW: 25.0% down · 7.5% · 30yr · 1.5% tax · 5.0% vac · 8.0% maint · 8.0% mgmt

Financing live

Cash to close

Down payment
$17,475
Closing costs
$2,097
Reserves months
Total cash needed

Loan-product check · same deal, 3 products live

Conventional

25% down · 7.5% · 30yr

Down + closing
Monthly P&I
Monthly cashflow
DSCR
Eligible?

Personal DTI + credit; lowest rate.

DSCR

20% down · 8.5% · 30yr

Down + closing
Monthly P&I
Monthly cashflow
DSCR
Eligible?

No personal income docs; deal must DSCR.

Hard money

10% down · 12.0% · 12mo

Down + closing
Monthly P&I
Monthly cashflow
DSCR
Eligible?

Short-term bridge; refi at stabilization.

Rent comps 40 comps

AddressBedsBaths SqftRent$/sqft DOM Units Dist
406 N Collington Ave Baltimore, MD 2.0 2.5 1216 $1,875 $1.54 44d 1 0.07mi
2208 Orleans St Baltimore, MD 3.0 1.0 1310 $1,775 $1.35 44d 1 0.11mi
2308 Jefferson St Baltimore, MD 3.0 1.0 907 $1,450 $1.60 44d 1 0.20mi
108 N Madeira St Baltimore, MD 2.0 2.0 1098 $1,900 $1.73 44d 1 0.22mi
2212 E Monument St Unit 2 Baltimore, MD 2.0 1.0 1200 $1,550 $1.29 18d 1 0.22mi
32 N Chester St Unit 30-B Baltimore, MD 1.0 1.0 1300 $1,850 $1.42 18d 1 0.22mi
712 N Duncan St Baltimore, MD 2.0 1.5 1000 $2,000 $2.00 44d 1 0.23mi
420 N Montford Ave Baltimore, MD 3.0 1.0 1350 $1,450 $1.07 44d 1 0.23mi
2015 E Fairmount Ave Baltimore, MD 3.0 3.5 1402 $2,500 $1.78 44d 1 0.23mi
2317 E Fayette St Baltimore, MD 3.0 1.5 1315 $2,000 $1.52 13d 1 0.24mi
437 N Montford Ave Baltimore, MD 3.0 1.5 1100 $1,450 $1.32 44d 1 0.25mi
2242 E Fairmount Ave Baltimore, MD 3.0 2.0 1345 $2,850 $2.12 44d 1 0.25mi
618 N Montford Ave Baltimore, MD 3.0 1.0 1050 $1,468 $1.40 44d 1 0.27mi
618 N Montford Ave Baltimore, MD 3.0 1.0 1050 $1,468 $1.40 15d 1 0.27mi
2410 E Fayette St Baltimore, MD 3.0 1.0 1224 $1,800 $1.47 44d 1 0.28mi
821 N Collington Ave Baltimore, MD 3.0 2.0 1150 $1,950 $1.70 44d 1 0.30mi
402 N Milton Ave Unit 402B Baltimore, MD 2.0 1.0 950 $1,290 $1.36 44d 1 0.30mi
16 N Bradford St Baltimore, MD 2.0 3.5 930 $2,400 $2.58 5d 1 0.31mi
425 N Milton Ave Baltimore, MD 3.0 1.0 1200 $1,525 $1.27 15d 1 0.33mi
1923 Ashland Ave Baltimore, MD 2.0 2.0 862 $1,770 $2.05 20d 2 0.33mi
1923 Ashland Ave Unit 401 Baltimore, MD 2.0 2.0 850 $1,795 $2.11 21d 1 0.33mi
107 N Port St Baltimore, MD 2.0 2.0 870 $1,995 $2.29 24d 1 0.34mi
720 N Port St Baltimore, MD 2.0 1.0 950 $1,300 $1.37 44d 1 0.35mi
230 N Rose St Baltimore, MD 2.0 1.5 1200 $1,545 $1.29 44d 1 0.35mi
224 N Rose St Baltimore, MD 2.0 2.5 1120 $1,875 $1.67 18d 1 0.35mi
233 N Rose St Baltimore, MD 2.0 2.5 934 $1,750 $1.87 18d 1 0.36mi
227 N Rose St Baltimore, MD 2.0 4.0 1420 $1,600 $1.13 24d 1 0.37mi
517 N Rose St Baltimore, MD 3.0 1.0 845 $1,400 $1.66 5d 1 0.37mi
16 S Wolfe St Unit B Baltimore, MD 2.0 2.0 1014 $1,800 $1.78 18d 1 0.38mi
104 N Rose St Baltimore, MD 3.0 2.0 936 $2,500 $2.67 44d 1 0.39mi
1901 E Lombard St Baltimore, MD 1.0 1.0 702 $1,750 $2.49 44d 1 0.41mi
225 N Luzerne Ave Baltimore, MD 3.0 1.0 1198 $1,350 $1.13 19d 1 0.41mi
502 N Glover St Baltimore, MD 2.0 1.5 827 $1,250 $1.51 21d 1 0.42mi
218 N Glover St Baltimore, MD 2.0 2.0 1360 $1,750 $1.29 44d 1 0.43mi
2608 McElderry St Baltimore, MD 3.0 1.0 1144 $1,550 $1.35 24d 1 0.43mi
802 N Broadway Unit B Baltimore, MD 1.0 1.0 910 $1,800 $1.98 44d 1 0.43mi
802 N Broadway #1 Baltimore, MD 2.0 1.0 1120 $1,800 $1.61 18d 1 0.43mi
415 N Glover St Baltimore, MD 2.0 2.5 1092 $1,600 $1.47 24d 1 0.44mi
2608 E Fayette St Unit 1 Baltimore, MD 2.0 1.0 900 $1,700 $1.89 15d 1 0.44mi
108 S Durham St Baltimore, MD 1.0 1.0 1000 $1,600 $1.60 44d 1 0.44mi

Listing history 9 events

  1. 2026-05-20
    listed $69,900 Active
  2. 2024-02-16
    soldstatus $275,000
  3. 2019-08-12
    soldstatus $6,319
  4. 2018-11-15
    soldstatus $355,000
  5. 2018-11-03
    historical
  6. 2018-11-02
    listed $85,000
  7. 2018-11-01
    soldstatus $85,000
  8. 2006-07-25
    soldstatus $84,000
  9. 1985-07-25
    soldstatus $7,500

ⓘ Source: listings_history table (triggers on properties + properties_extension) + one-shot backfill from property_details.listing_events for pre-trigger history.

Tax reassessment forecast MD · Partial reset (capped growth)

Current annual tax
$2,692 · $224/mo
Projected year-2 tax
$2,692 · $224/mo
Expected delta
$0/yr ($0/mo · 0.0%)

ⓘ Screening estimate from a state-policy table — verify with the county assessor before closing.

Climate risk First Street

  • 🌊 Flood 1/10 Low FEMA zone X (unshaded) · 0% chance over 30 yrs
  • 🔥 Wildfire 1/10 Low
  • 🌡 Heat 8/10 Severe 7 d/yr ≥103°F today · 15 d/yr by 30 yrs out
  • 💨 Wind 6/10 Major 27% chance of damaging wind over 30 yrs
  • 🫁 Air quality 4/10 Moderate 6 unhealthy d/yr today · 7 by 30 yrs out

Nearby sold comps map

Loading sold comps map…

Walkable amenities ~0.75 mi

Loading nearby amenities…

Taxation est. · year 1

Rental income
$22,208
− Mortgage interest
−$3,915
− Property taxes
−$2,692
− Insurance
−$350
− Repairs & maintenance
−$1,777
− Management
−$1,777
− Depreciation
−$2,033
Taxable income
$9,664
combined federal + state — saved on this device
Est. tax owed @ 24.0%
−$2,319
After-tax cash flow
$7,785/yr

For passive investors: Depreciation is non-cash, so a rental often shows a tax loss while cash-flowing — sheltering income. Rental losses are passive: they offset passive income freely, and up to $25,000/yr can offset ordinary (W-2) income if you actively participate and your MAGI is under $100k (phasing out to $0 by $150k); unused losses carry forward. On sale, claimed depreciation is recaptured at up to 25%, and gains may owe capital-gains tax (a 1031 exchange can defer both). Figures are a year-1 estimate at your 24.0% rate — not tax advice; consult a CPA.

Schools (NCES district)

District
Baltimore City Public Schools
NCES district ID
2400090
Math proficiency
7% ▼ -9.00%
Reading proficiency
16% ▼ -5.00%
Median HH income
$42,108
Composite
10.08/100
National rank
#9805
State rank
#24 of 24 in MD

Livability — Baltimore

Score
76/100
State rank
#90
US rank
#3396

Category grades

Amenities A+ Commute A+ Cost of living A- Crime F Employment C Housing A+ Health & safety A+ User ratings D-

Schools grade is shown separately in the Schools card above.

Census & demographics

Census place
Baltimore, MD
County
Baltimore City · 558,601 people
City population
588,727
Metro
Baltimore-Columbia-Towson, MD
Population (ZIP)
14,969
Household income
$85,254
Rent vs Own
65.8% rent · 34.2% own
Severe rent burden
1147.0

Population outlook (Baltimore County) Hauer SSP2

Today (2025)
624,249 people
By 2030
621,541 · -0.4%
By 2040
609,756 · -2.3%
By 2050
597,249 · -4.3%
By 2075
552,236 · -11.5%
By 2100
513,934 · -17.7%

Race, ethnicity, and origin ACS 2023

Neighborhood character
Diverse neighborhood (Simpson 0.62)
Race & ethnicity
White 53% Black 29% Hispanic / Latino 9% Two or more races 7% Asian 4%
Hispanic origin (detail)
Mexican 3% Puerto Rican 1%
Common ancestry
Romanian 6% Slovak 2% Lithuanian 2%
Foreign-born
10% · Canada, China, South Korea
Languages at home
85% English-only · Spanish 6% Other Indo-European 2% Russian/Polish/Slavic 1%

Political lean MEDSL · Baltimore

2024 margin
Solid D (+73.0) · D 85.2% · R 12.2% · Other 2.6%
2008→2024 swing
-2.5pp toward R · 2008: 75.5pp · 2024: 73.0pp
All cycles
2024: D+73.0 2020: D+76.6 2016: D+74.6 2012: D+76.4 2008: D+75.5

Not yet ingested

Civics

Market trends

HPI YoY
▼ -545.26%
Current HPI
351.3778
Rent YoY
▲ 2.26%
Metro
Baltimore-Columbia-Towson, MD
State GDP YoY
▲ 2.97%
F500 in state
12

Industry mix (Fortune 500 HQ in MD)

Industry F500 HQs Revenue

Price history

+832.0% since first listed
9 events — show timeline
  • 2026-05-20 Listed $69,900 BRIGHT MLS
  • 2024-02-16 Sold (Public Records) $275,000 Public Records
  • 2019-08-12 Sold (Public Records) $6,319 Public Records
  • 2018-11-15 Sold (Public Records) $355,000 Public Records
  • 2018-11-03 Listing Removed BRIGHT MLS
  • 2018-11-02 Listed $85,000 BRIGHT MLS
  • 2018-11-01 Sold (MLS) $85,000 BRIGHT MLS
  • 2006-07-25 Sold (Public Records) $84,000 Public Records
  • 1985-07-25 Sold (Public Records) $7,500 Public Records

Property tax history

+4.5%/yr

Latest (2025): $2,692 · +4.2% YoY. Source: county tax records.

Cash-flow waterfall

monthly

Sold comps — $/sqft

last 12 mo · ≤1 mi

Loading sold comps…