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21 Park Charles Blvd S Unit B
B- Composite 69.49
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 +24.5/30.0
  • ARV discount +15.0/15.0
  • 1% rule +8.7/10.0
  • DSCR +7.9/10.0
  • Schools +5.2/10.0
  • Rent growth +3.2/5.0
  • Livability +2.5/5.0
  • Condition / age +2.5/5.0
  • Appreciation +0.0/10.0

$135,000

21 Park Charles Blvd S Unit B · St. Peters, MO 63376
2 bd · 1.5 ba · 1,200 sqft · Condo public records · 45 Days on market
Built 1982 $112/sqft · 21% below area Est $172k · 21% under $260/mo HOA · 14% of rent

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

Listing remarks

Spacious townhouse opportunity ready for your vision! This fixer upper offers a solid layout with generously sized bedrooms and multiple large storage closets throughout. Main floor features include convenient laundry, an eat-in kitchen, and a comfortable living space with fireplace. Upstairs, you’ll find two oversized bedrooms with great natural light. Recent updates include newer insulated windows, helping improve efficiency and comfort. Enjoy a private fenced patio—perfect for relaxing or entertaining. Property includes 2 assigned parking spaces plus ample visitor parking. Located in a well-maintained community with exterior maintenance and common areas covered by the HOA. No

Key facts

  • $260 HOA
  • Built 1982
  • Listed 44 days

Property features AI

Finance

  • Other: Living area reported as 1,200 (source: Assessor)
  • HOA & community: Community managed by Sentry Management; Monthly HOA fee of $260; HOA covers grounds maintenance, parking/road maintenance, common area maintenance and trash; Outside management; 40 units in the community

Exterior

  • Parking: Assigned parking and guest parking in a parking lot; No driveway and no garage
  • Utilities: Public water; Public sewer; Electric service with 220 volts; Cable available; Natural gas available; Phone available; Sewer connected; Water available
  • Home design: Attached townhouse; Two levels; Private ownership; Fixer condition
  • Construction: Brick, concrete and vinyl siding construction; Architectural shingle roof; Slab foundation; Built (year source: Assessor)
  • Exterior features: Patio; Fenced yard (wood privacy fence); Shed on property; Adjoins wooded area; Level lot; Concrete road frontage (city street)

Interior

  • Kitchen: Free-standing electric range; Eat-in layout with kitchen island
  • Bedrooms: Two bedrooms on the upper level
  • Flooring: Carpet; Vinyl
  • Bathrooms: One full bathroom; One half bathroom (main level)
  • Heating & cooling: Forced air heating (natural gas); Central air conditioning; Ceiling fans; Electric cooling
  • Interior features: Ceiling fans; Eat-in kitchen; Kitchen island; Insulated windows; Storm windows; Wood-burning fireplace
  • Laundry & utility: Main-level laundry

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 condo listed at $135k.

Deal economics

  • At list price, monthly cash flow is $277 ($3k/yr) — positive.
  • The deal already cash-flows at list — no discount required.
  • Meets the 1% rule at list price ($2k rent vs $135k).
  • Recommended offer: $131k (3.0% below list) — sets the bar for market timing.
  • Cap rate 8.8% vs local median 4.2% in St. Peters — 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: area grade B — affects rentability + tenant quality, not the cash-flow math above.
  • Francis Howell R-III (suburban): math 53% / reading 63% proficiency, ranked #11 of 324 in MO (top 3%) — acceptable for families but not a draw, mixed tenant base, ~2y average lease; only 15% free/reduced lunch — higher-income household profile.
  • Zoned schools: Fairmount Elem. (math 43% / reading 56%, grade D, #284 of 1,115 statewide, top 30%, 1,013 students, 18% FRL); Saeger Middle (math 56% / reading 61%, grade B, #24 of 391 statewide, top 6%, 701 students, 12% FRL); Francis Howell Central High (math 36% / reading 74%, grade C, #65 of 521 statewide, top 13%, 1,805 students, 18% FRL) — zoned schools at 16% FRL track the district average.
  • Market conditions: Rents rising (+2.7%/yr); 297 active listings in the ZIP; 11 comparable units currently listed for rent nearby; rentals leasing fast (median 5d on market — plan ~1-2 weeks tenant-placement turnaround); solid renter incomes; 2,021 units permitted in St. Charles County in 2024 (568 in 5+ unit buildings).

Forward outlook

  • Local home prices are declining (-3.0%/yr); year-one equity from $933 of loan paydown is wiped out by about $4k of value loss. Plan a longer hold.
  • St. Charles County population projected at +22% by 2050 — long-run rental-demand tailwind backs the buy-and-hold thesis.

Negotiation context

  • It's been on market 45 days — a 3% lower offer ($131k) is reasonable based on typical stale-listing flexibility.
  • Current owner paid $20k; list at $135k implies a 589% gain — meaningful room to come down on a strong offer.

Risks & watch-outs

  • Climate carrying-cost: extreme-heat days projected 7→20/yr by 2055 (HVAC capex compounding) — expect insurance premiums to compound above CPI over the hold.
Recommended offer $130,950 (3.0% below list)

Questions for the listing agent

  1. It's been on market 45 days. Have you received any prior offers? Is the seller open to a 3% concession, seller financing, or rate buy-down credit?
  2. What does the HOA fee cover, when was the last increase, and are there any pending special assessments or reserve-fund shortfalls?
  3. Any open or pending special assessments — roof, HVAC, plumbing, elevator, façade? What's the per-unit balance and payoff schedule, and is the seller paying it off at close or rolling it to the buyer?
  4. Is there a deadline driving the sale (1031 exchange, divorce, estate, relocation)? That informs how much negotiation room exists.
  5. 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.
  6. 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.
  7. How much new apartment / multifamily construction is in the pipeline within 1–3 miles? Heavy new supply (>2% of stock underway) typically softens rents 12–24 months out; light construction supports rent growth.

Investment metrics

1% rule
1.37%
Cap rate
8.76%
Cash-on-cash
8.79%
DSCR
1.39
GRM
6.1

CMA / ARV

ARV (median comp)
$171,861
List price
$135,000
Delta
-21.45%
Verdict
UNDERPRICED
Comps
20 within 1.0 mi

Projected returns pro-forma

-3.0% appreciation · 2.69% rent growth · sell at horizon

5-year hold
IRR
-3.3%
Equity multiple
0.88×
Total profit
$-4,625
Equity at exit
$20,129
10-year hold
IRR
6.1%
Equity multiple
1.45×
Total profit
$17,084
Equity at exit
$11,672

Cash invested: $37,800 (down + closing). Projections, not guarantees.

Landlord ↔ Tenant lean methodology

Overall (STATE)
81 Strongly Landlord-Friendly
State Missouri
81 Strongly Landlord-Friendly · R+10
County
— inherits STATE
City
— inherits STATE
Generally landlord-friendly; St Louis has some habitability requirements.

ZIP-level market 63376

Rents YoY
2.7%
Active inventory
297
Price-to-rent
6.1×

Monthly cashflow live

Estimated rent
$1,845 high interval (Pro) →
Mortgage (P&I)
$708
Tax from tax record
$156 /mo · $1,874/yr
Insurance
$56
HOA
$260
Vacancy / Maint / Mgmt
$387
Net cashflow
$277

Break-even live

Break-even rent $1,494
Max offer price $135,000
Occupancy floor 80%

Sensitivity live

Price -10% $353 -5% $315 +0% $277 +5% $239 +10% $201
Rent -10% $131 -5% $204 +0% $277 +5% $350 +10% $423
Rate -1.0pp $345 -0.5pp $311 base $277 +0.5pp $242 +1.0pp $206

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
$33,750
Closing costs
$4,050
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 11 comps

AddressBedsBaths SqftRent$/sqft DOM Units Dist
31 Park Charles Blvd N Saint Peters, MO 2.0 1.5 1280 $1,650 $1.29 18d 1 0.32mi
4153 McClay Rd Saint Charles, MO 3.0 2.0 1096 $2,100 $1.92 45d 1 0.65mi
634 Watkins Glen Dr Saint Charles, MO 3.0 2.0 1498 $2,621 $1.75 0d 1 0.75mi
18 Brooker Ct Saint Peters, MO 3.0 2.0 1104 $1,895 $1.72 5d 1 0.92mi
1360 Park Ashwood Dr St Charles, MO 2.0 2.0 936 $1,515 $1.62 0d 3 1.11mi
1400 Britain Way St Charles, MO 1.0–2.0 1.0 762 $1,484 $1.95 0d 7 1.19mi
4507 Cambrook Dr Saint Charles, MO 3.0 2.0 1279 $2,300 $1.80 13d 1 1.26mi
100 Grenache Blanc Dr St Peters, MO 1.0–3.0 1.0–2.0 1203 $1,806 $1.50 0d 29 1.27mi
1248 Mendoza Dr Saint Peters, MO 3.0 2.0 1300 $2,031 $1.56 16d 1 1.44mi
121 Shirley Ridge Dr St Charles, MO 2.0 1.0 1020 $1,475 $1.45 45d 1 1.46mi
1601 Cottleville Pkwy Saint Peters, MO 1.0–2.0 1.0–2.0 1062 $1,880 $1.77 0d 22 1.50mi

HOA detail condo

Monthly dues
$260 · $3,120/yr
Likely covers
exterior maint.parking
Assessments
None detected in remarks — confirm with the listing agent.

Listing history 22 events

  1. 2026-06-21
    days on market $135,000 Active 45 DOM
  2. 2026-06-18
    days on market $135,000 Active 42 DOM
  3. 2026-06-17
    days on market $135,000 Active 41 DOM
  4. 2026-06-16
    days on market $135,000 Active 40 DOM
  5. 2026-06-15
    days on market $135,000 Active 39 DOM
  6. 2026-06-13
    days on market $135,000 Active 37 DOM
  7. 2026-06-13
    days on market $135,000 Active 36 DOM
  8. 2026-06-09
    days on market $135,000 Active 33 DOM
  9. 2026-06-08
    days on market $135,000 Active 32 DOM
  10. 2026-06-07
    days on market $135,000 Active 31 DOM
  11. 2026-06-05
    days on market $135,000 Active 28 DOM
  12. 2026-06-03
    days on market $135,000 Active 27 DOM
  13. 2026-06-02
    days on market $135,000 Active 26 DOM
  14. 2026-06-01
    days on market $135,000 Active 25 DOM
  15. 2026-05-31
    days on market $135,000 Active 24 DOM
  16. 2026-05-16
    price $135,000 1046-char remark
  17. 2026-05-08
    listed $140,000 Active 1046-char remark
  18. 2026-05-04
    historical $140,000 1046-char remark
  19. 1994-04-01
    soldstatus
  20. 1992-07-01
    soldstatus $19,600
  21. 1991-10-01
    soldstatus
  22. 1982-06-01
    soldstatus

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

Tax reassessment forecast MO · Resets to sale price

Current annual tax
$1,874 · $156/mo
Projected year-2 tax
$1,874 · $156/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 5/10 Major 7 d/yr ≥107°F today · 20 d/yr by 30 yrs out
  • 💨 Wind 2/10 Low 100% chance of damaging wind over 30 yrs
  • 🫁 Air quality 2/10 Low 2 unhealthy d/yr today · 2 by 30 yrs out

Nearby sold comps map

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Walkable amenities ~0.75 mi

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Taxation est. · year 1

Rental income
$22,138
− Mortgage interest
−$7,562
− Property taxes
−$1,874
− Insurance
−$675
− Repairs & maintenance
−$1,771
− Management
−$1,771
− HOA
−$3,120
− Depreciation
−$3,927
Taxable income
$1,437
combined federal + state — saved on this device
Est. tax owed @ 24.0%
−$345
After-tax cash flow
$2,979/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
Francis Howell R-III
NCES district ID
2928950
Math proficiency
53% ▼ -12.00%
Reading proficiency
63% ▼ -5.00%
Median HH income
$79,768
Composite
52.23/100
National rank
#1602
State rank
#11 of 324 in MO

Livability — St. Peters

No livability data for this city. (Only ~50 U.S. cities are tracked.)

Census & demographics

County
Saint Charles County · 399,703 people
City population
74,876
Metro
St. Louis, MO-IL
Population (ZIP)
74,962
Household income
$96,393
Rent vs Own
18.7% rent · 81.3% own
Severe rent burden
964.0

Population outlook (St. Charles County) Hauer SSP2

Today (2025)
437,857 people
By 2030
461,707 · +5.4%
By 2040
503,222 · +14.9%
By 2050
534,684 · +22.1%
By 2075
597,047 · +36.4%
By 2100
609,682 · +39.2%

Race, ethnicity, and origin ACS 2023

Neighborhood character
Predominantly White (86%)
Race & ethnicity
White 86% Two or more races 6% Black 5% Hispanic / Latino 2% Asian 2%
Common ancestry
Lithuanian 3% Romanian 3% Italian 2%
Foreign-born
3% · China, Canada
Languages at home
96% English-only · Spanish 1% Chinese 1% Other Asian/Pacific 1%

Political lean MEDSL · St. Charles

2024 margin
R (+17.0) · D 40.8% · R 57.8% · Other 1.4%
2008→2024 swing
-7.2pp toward R · 2008: -9.7pp · 2024: -17.0pp
All cycles
2024: R+17.0 2020: R+17.5 2016: R+26.4 2012: R+21.0 2008: R+9.7

Not yet ingested

Civics

Market trends

HPI YoY
▼ -315.50%
Current HPI
230.3362
Rent YoY
▲ 2.69%
Metro
St. Louis, MO-IL
State GDP YoY
▲ 1.84%
F500 in state
20

Industry mix (Fortune 500 HQ in MO)

Industry F500 HQs Revenue

Price history

+588.8% since first listed
7 events — show timeline
  • 2026-05-16 Price Changed $135,000 MARIS as Distributed by MLS Grid
  • 2026-05-08 Listed $140,000 MARIS as Distributed by MLS Grid
  • 2026-05-04 Coming Soon $140,000 MARIS as Distributed by MLS Grid
  • 1994-04-01 Sold (Public Records) Public Records
  • 1992-07-01 Sold (Public Records) $19,600 Public Records
  • 1991-10-01 Sold (Public Records) Public Records
  • 1982-06-01 Sold (Public Records) Public Records

Property tax history

+4.4%/yr

Latest (2025): $1,874 · +5.7% YoY. Source: county tax records.

Cash-flow waterfall

monthly

Sold comps — $/sqft

last 12 mo · ≤1 mi

Loading sold comps…