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704 Marlin Ln Duplex
C- Composite 53.53
Why this score? — see what drove the C- 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 +21.2/30.0
  • ARV discount +7.5/15.0
  • DSCR +6.8/10.0
  • 1% rule +4.7/10.0
  • Schools +4.3/10.0
  • Livability +3.5/5.0
  • Rent growth +3.0/5.0
  • Condition / age +2.5/5.0
  • Appreciation +0.0/10.0

$600,000

704 Marlin Ln · James Island, SC 29412
3 bd · 2.0 ba · 2,080 sqft · MultiFamily public records · 16 Days on market
Built 1975 0.40 ac lot

🖨 Deal sheet 📄 Offer letter ✓ Due diligence

Multi-family units

County records classify this as Multi-Family (2-4 Unit). Listing-text estimate: 2 units. confirmed

Listing remarks

Excellent investment opportunity in the highly desirable Clearview neighborhood on James Island. Located at 704 Marlin Lane, this well-positioned duplex offers strong rental income with both sides currently tenant occupied. Each unit features 3 bedrooms, 1 full bath, and approximately 1,100 square feet of living space, providing spacious layouts that appeal to long-term renters. Situated on a large . 4-acre lot, the property offers generous yard space, ample parking, and future upside in one of Charleston's most sought-after areas. Investors will love the unbeatable location -- just minutes to Downtown Charleston, MUSC, Folly Beach, shopping, dining, and everything James Island has to offer

Key facts

  • Ample parking
  • Large lot
  • Generous yard space

Tags

CLEARVIEW NEIGHBORHOODLARGE LOTGENEROUS YARD SPACEAMPLE PARKINGUNBEATABLE LOCATIONNO HOA

Property features AI

Finance

  • Financial info: 2 total units; Property marketed as residential income

Exterior

  • Parking: Open parking; 2 parking spaces (2-car)
  • Utilities: Public sewer; Electric service by Dominion Energy; Water service by James Island PSD
  • Home design: Duplex (residential income); Ground-level entry; Located in the Clearview subdivision; James Island area
  • Construction: Duplex structure
  • Exterior features: Asphalt roof; No additional structures noted

Interior

  • Kitchen: Dishwasher; Disposal; Electric cooktop
  • Bedrooms: 6 bedrooms
  • Bathrooms: 2 bathrooms
  • Heating & cooling: Central heating (electric); Central air conditioning
  • Interior features: Ceiling fans
  • Laundry & utility: Tenants pay all utilities

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 × 3-bed/1.0-bath units multifamily listed at $600k.

Deal economics

  • At list price, monthly cash flow is $866 ($10k/yr) — positive. Per door: $433/mo.
  • The deal already cash-flows at list — no discount required.
  • To meet the 1% rule (rent ≥ 1% of price), the offer needs to be $584k (2.7% below list).
  • Recommended offer: $584k (2.7% below list) — sets the bar for 1% rule.
  • Cap rate 8.0% vs local median 2.4% in James Island — 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 70/100 on livability (#64 in SC) — a middle-class / working-renter tenant base. Strengths: employment A+, housing A+, crime A; Watch: amenities F, commute F, cost of living F.
  • Charleston 01 (urban): math 48% / reading 53% proficiency, ranked #7 of 80 in SC (top 9%) — acceptable for families but not a draw, mixed tenant base, ~2y average lease.
  • Zoned schools: Stiles Point Elementary (math 74% / reading 71%, grade A, #24 of 597 statewide, top 4%, 817 students, 16% FRL); Camp Road Middle (math 50% / reading 57%, grade C+, #29 of 229 statewide, top 13%, 864 students, 38% FRL); James Island Charter High (math 73% / reading 89%, grade A, #21 of 196 statewide, top 11%, 1,589 students, 36% FRL, charter).
  • Zoned-school proficiency averages 69% at this address vs 50% district-wide (+18 pts) — the actual schools serving this property are materially stronger than the Charleston 01 average implies; a family-tenant draw the district grade alone would hide.
  • Market conditions: Rents rising (+2.1%/yr); 301 active listings in the ZIP; 4 comparable units currently listed for rent nearby; rentals at typical pace (median 21d on market — plan ~3-4 weeks tenant-placement turnaround); solid renter incomes; 4,156 units permitted in Charleston County in 2024 (857 in 5+ unit buildings).
  • At $5,838/mo this rent would consume 69% of the median local household income ($102k/yr) (locally 1006% of renters already pay >50% of income on rent) — very limited rent-growth headroom before tenants either downsize or default.

Forward outlook

  • Local home prices are declining (-3.0%/yr); year-one equity from $4k of loan paydown is wiped out by about $18k of value loss. Plan a longer hold.
  • Charleston County population projected at +44% by 2050 — long-run rental-demand tailwind backs the buy-and-hold thesis.

Negotiation context

  • It's been on market 16 days — a 2% lower offer ($591k) is reasonable based on typical stale-listing flexibility.
  • Current owner paid $105k; list at $600k implies a 471% gain — meaningful room to come down on a strong offer.

Risks & watch-outs

  • Climate carrying-cost: severe wind risk, 99% chance of damaging wind over 30y; extreme-heat days projected 7→19/yr by 2055 (HVAC capex compounding) — expect insurance premiums to compound above CPI over the hold.
Recommended offer $583,800 (2.7% below list)

Questions for the listing agent

  1. Can we see the unit-by-unit rent roll, current vacancy, and any below-market leases? What's the average tenancy length?
  2. What capital expenditures (roof, boiler, parking lot, exteriors) have been made in the last 5 years, and what's planned in the next 2?
  3. Built in 1975 — when were the roof, HVAC, electrical panel, plumbing, and water heater last replaced?
  4. Is there a deadline driving the sale (1031 exchange, divorce, estate, relocation)? That informs how much negotiation room exists.
  5. 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?
  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 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
0.97%
Cap rate
8.03%
Cash-on-cash
6.19%
DSCR
1.28
GRM
8.6

CMA / ARV

No comps found within radius.

Projected returns pro-forma

-3.0% appreciation · 2.06% rent growth · sell at horizon

5-year hold
IRR
-7.8%
Equity multiple
0.72×
Total profit
$-47,677
Equity at exit
$89,462
10-year hold
IRR
0.6%
Equity multiple
1.04×
Total profit
$6,864
Equity at exit
$51,877

Cash invested: $168,000 (down + closing). Projections, not guarantees.

Landlord ↔ Tenant lean methodology

Overall (STATE)
90 Strongly Landlord-Friendly
State South Carolina
90 Strongly Landlord-Friendly · R+6
County
— inherits STATE
City
— inherits STATE
5-day notice; preempted; landlord-favorable.

ZIP-level market 29412

Rents YoY
2.1%
Active inventory
301
Price-to-rent
17.1×

Monthly cashflow live

Estimated rent
$5,838 high interval (Pro) →
Mortgage (P&I)
$3,146
Tax from tax record
$349 /mo · $4,191/yr
Insurance
$250
HOA
$0
Vacancy / Maint / Mgmt
$1,226
Net cashflow
$866

Break-even live

Break-even rent $4,741
Max offer price $600,000
Occupancy floor 80%

2-unit breakdown (identical units grouped — click to expand)

UnitsBedsBathsEst. rent
Total (2 units) $5,838

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
$150,000
Closing costs
$18,000
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 4 comps

AddressBedsBaths SqftRent$/sqft DOM Units Dist
838 Fred St Charleston, SC 3.0 2.0 1534 $2,800 $1.83 21d 1 0.16mi
729 Harbor View Rd Charleston, SC 3.0 2.0 1500 $3,021 $2.01 21d 1 0.24mi
1129 Quail Dr Charleston, SC 4.0 3.0 1475 $5,200 $3.53 23d 1 1.17mi
1213 Captain Rivers Dr Charleston, SC 4.0 4.0 2954 $5,500 $1.86 18d 1 1.42mi

Listing history 12 events

  1. 2026-06-18
    days on market $600,000 Active 16 DOM
  2. 2026-06-17
    days on market $600,000 Active 15 DOM
  3. 2026-06-16
    days on market $600,000 Active 14 DOM
  4. 2026-06-15
    statusdays on market $600,000 Active 13 DOM
  5. 2026-06-10
    days on market $600,000 Active Under Contract 8 DOM
  6. 2026-06-09
    days on market $600,000 Active Under Contract 7 DOM
  7. 2026-06-08
    days on market $600,000 Active Under Contract 6 DOM
  8. 2026-06-07
    days on market $600,000 Active Under Contract 5 DOM
  9. 2026-06-05
    days on market $600,000 Active Under Contract 2 DOM
  10. 2026-06-03
    status $600,000 Active Under Contract 1 DOM
  11. 2026-06-03
    remarks 699-char remark
  12. 2026-06-03
    listed $600,000 Active 1 DOM

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

Tax reassessment forecast SC · Resets to sale price

Current annual tax
$4,191 · $349/mo
Projected year-2 tax
$4,191 · $349/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 4/10 Moderate FEMA zone X (unshaded) · 13% chance over 30 yrs
  • 🔥 Wildfire 1/10 Low
  • 🌡 Heat 10/10 Extreme 7 d/yr ≥104°F today · 19 d/yr by 30 yrs out
  • 💨 Wind 9/10 Extreme 99% chance of damaging wind over 30 yrs
  • 🫁 Air quality 3/10 Moderate 2 unhealthy d/yr today · 3 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
$70,056
− Mortgage interest
−$33,609
− Property taxes
−$4,191
− Insurance
−$3,000
− Repairs & maintenance
−$5,604
− Management
−$5,604
− Depreciation
−$17,455
Taxable income
$593
combined federal + state — saved on this device
Est. tax owed @ 24.0%
−$142
After-tax cash flow
$10,254/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
Charleston 01
NCES district ID
4501440
Math proficiency
48% ▼ -2.00%
Reading proficiency
53% ▬ 0.00%
Median HH income
$52,376
Composite
43.41/100
National rank
#3018
State rank
#7 of 80 in SC

Livability — James Island

Score
70/100
State rank
#64
US rank
#7731

Category grades

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

Schools grade is shown separately in the Schools card above.

Census & demographics

Census place
James Island, SC
County
Charleston County · 366,793 people
Metro
Charleston-North Charleston, SC
Population (ZIP)
39,256
Household income
$101,509
Rent vs Own
27.3% rent · 72.7% own
Severe rent burden
1006.0

Population outlook (Charleston County) Hauer SSP2

Today (2025)
480,562 people
By 2030
525,921 · +9.4%
By 2040
612,189 · +27.4%
By 2050
691,627 · +43.9%
By 2075
847,979 · +76.5%
By 2100
926,482 · +92.8%

Race, ethnicity, and origin ACS 2023

Neighborhood character
Predominantly White (74%)
Race & ethnicity
White 74% Black 16% Hispanic / Latino 5% Two or more races 4% Asian 2%
Common ancestry
Slovak 3% Italian 3% Lithuanian 2%
Foreign-born
5% · Canada, China
Languages at home
94% English-only · Spanish 3% French/Haitian/Cajun 1% Other Indo-European 1%

Political lean MEDSL · Charleston

2024 margin
Lean D (+5.7) · D 51.9% · R 46.3% · Other 1.8%
2008→2024 swing
-2.7pp toward R · 2008: 8.3pp · 2024: 5.7pp
All cycles
2024: D+5.7 2020: D+12.9 2016: D+7.9 2012: D+2.4 2008: D+8.3

Not yet ingested

Civics

Market trends

HPI YoY
▼ -564.80%
Current HPI
400.0617
Rent YoY
▲ 2.06%
Metro
Charleston-North Charleston, SC
State GDP YoY
▲ 4.51%
F500 in state
2

Industry mix (Fortune 500 HQ in SC)

Industry F500 HQs Revenue

Price history

+638.7% since first listed
3 events — show timeline
  • 2026-06-02 Listed $600,000 Charleston Trident MLS
  • 1996-10-25 Sold (Public Records) $105,000 Public Records
  • 1989-08-21 Sold (Public Records) $81,220 Public Records

Property tax history

+2.7%/yr

Latest (2022): $4,191 · +0.4% YoY. Source: county tax records.

Cash-flow waterfall

monthly

Sold comps — $/sqft

last 12 mo · ≤1 mi

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