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12 Harbour Ln Unit 4A
D Composite 40.33
Why this score? — see what drove the D 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 +13.0/30.0
  • Schools +6.2/10.0
  • ARV discount +5.0/15.0
  • DSCR +3.9/10.0
  • 1% rule +3.7/10.0
  • Livability +3.5/5.0
  • Rent growth +2.5/5.0
  • Condition / age +2.5/5.0
  • Appreciation +0.0/10.0

$369,000

12 Harbour Ln Unit 4A · Oyster Bay, NY 11771
1 bd · 1.0 ba · 850 sqft · Condo · 118 Days on market
Built 1997 $434/sqft · 6% above area Est $350k · 6% over

🖨 Deal sheet 📄 Offer letter ✓ Due diligence

Listing remarks MLS

Move right into this rarely available first-floor 1-bedroom co-op in the highly sought-after Top of the Harbour waterfront community. This bright and beautifully maintained home features an updated kitchen with modern appliances, renovated bathroom with walk-in shower, carpeted bedroom, and attractive flooring throughout. Enjoy your own private patio with seasonal water views—perfect for morning coffee or evening relaxation. Ample closet space, updated electric, garage storage, and parking directly in front of the unit add to the convenience. Maintenance includes taxes, heat, water, exterior maintenance, parking, snow removal, and garbage collection, making this an exceptional value. Located just moments from the beach, restaurants, shops, parks, and transportation. First-floor units with water views and private outdoor space in this community are rarely available and highly desirable. Don’t miss this opportunity—schedule your private showing today before it’s gone.

Key facts

  • Renovated bathroom
  • First-floor co-op
  • Ample closet space

Tags

FIRST-FLOOR CO-OPUPDATED KITCHENRENOVATED BATHROOMPRIVATE PATIOSEASONAL WATER VIEWSAMPLE CLOSET SPACE

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 1-bed/1.0-bath condo listed at $369k.

Deal economics

  • At list price, monthly cash flow is $-19 ($-226/yr) — negative.
  • To cash-flow at today's rent, offer at most $366k (0.7% below list).
  • To meet the 1% rule (rent ≥ 1% of price), the offer needs to be $320k (13.2% below list).
  • Recommended offer: $320k (13.2% below list) — sets the bar for 1% rule.

Location & tenants

  • Location reads 70/100 on livability (#436 in NY) — a middle-class / working-renter tenant base. Strengths: schools A+, crime A+, employment A+; Watch: housing D+, commute F, cost of living F.
  • Oyster Bay-East Norwich Central School District (suburban): math 68% / reading 67% proficiency, ranked #120 of 590 in NY (top 20%) — acceptable for families but not a draw, mixed tenant base, ~2y average lease; only 15% free/reduced lunch — higher-income household profile.
  • Market conditions: 71 active listings in the ZIP; 7 comparable units currently listed for rent nearby; rentals at typical pace (median 22d on market — plan ~3-4 weeks tenant-placement turnaround); 824 units permitted in Nassau County in 2024 (153 in 5+ unit buildings).

Forward outlook

  • Local home prices are declining (-3.0%/yr); year-one equity from $3k of loan paydown is wiped out by about $11k of value loss. Plan a longer hold.
  • Nassau County population projected at +7% by 2050 — modest demand growth; plan on rents tracking national, not racing it.

Negotiation context

  • It's been on market 118 days — a 9% lower offer ($336k) is reasonable based on typical stale-listing flexibility.
  • 2 sale attempts since 9y 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.
  • Current owner paid $200k; list at $369k implies a 85% gain — meaningful room to come down on a strong offer.

Risks & watch-outs

  • Climate carrying-cost: major wind risk, 67% chance of damaging wind over 30y; extreme-heat days projected 7→16/yr by 2055 (HVAC capex compounding) — expect insurance premiums to compound above CPI over the hold.
Recommended offer $320,407 (13.2% below list)

Questions for the listing agent

  1. What do current leases actually rent for vs. the listed asking? Can we see a recent rent roll and the last 12 months of T-12 income?
  2. It's been on market 118 days. Have you received any prior offers? Is the seller open to a 13% concession, seller financing, or rate buy-down credit?
  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. Why hasn't it sold? Are there any deal-killer items the seller is aware of (foundation, flood, title, zoning, code violations)?
  5. Is there a deadline driving the sale (1031 exchange, divorce, estate, relocation)? That informs how much negotiation room exists.
  6. Schools are A-rated — typically a magnet for longer-tenancy family renters. What's the average tenant stay here, and is there a school-zone premium baked into asking?
  7. The area grade is low — what's the realistic commute time and amenity access for the typical tenant pool here? Any planned neighborhood developments (good or bad) we should know about?
  8. 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.
  9. 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.
  10. 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
0.87%
Cap rate
6.23%
Cash-on-cash
-0.22%
DSCR
0.99
GRM
9.6

CMA / ARV

ARV (median comp)
$349,670
List price
$369,000
Delta
5.53%
Verdict
FAIR
Comps
11 within 1.0 mi

Projected returns pro-forma

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

5-year hold
IRR
-16.7%
Equity multiple
0.41×
Total profit
$-60,947
Equity at exit
$55,019
10-year hold
IRR
-8.4%
Equity multiple
0.47×
Total profit
$-54,422
Equity at exit
$31,904

Cash invested: $103,320 (down + closing). Projections, not guarantees.

Landlord ↔ Tenant lean methodology

Overall (STATE)
15 Strongly Tenant-Friendly
State New York
15 Strongly Tenant-Friendly · D+10
County
— inherits STATE
City
— inherits STATE
NYC rent stabilization (~1M units); 2019 HSTPA strengthened tenant rights; courts deeply backlogged.

ZIP-level market 11771

Home prices YoY
-28.8%
Active inventory
71
Price-to-rent
9.6×

Monthly cashflow live

Estimated rent
$3,204 high interval (Pro) →
Mortgage (P&I)
$1,935
Tax est. 1.5%
$461 /mo · $5,535/yr
Insurance
$154
HOA
$0
Vacancy / Maint / Mgmt
$673
Net cashflow
$-19

Break-even live

Break-even rent $3,228
Max offer price $366,271
Occupancy floor 96%

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
$92,250
Closing costs
$11,070
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 7 comps

AddressBedsBaths SqftRent$/sqft DOM Units Dist
75 Maxwell Ave Apt B Oyster Bay, NY 2.0 1.0 836 $3,000 $3.59 43d 1 0.37mi
46 Maxwell Ave Oyster Bay, NY 2.0 1.5 850 $3,300 $3.88 43d 1 0.41mi
21 Audrey Ave Unit D Oyster Bay, NY 1.0 1.0 600 $2,400 $4.00 22d 1 0.45mi
108 South St Oyster Bay, NY 2.0 1.0 855 $4,150 $4.85 1d 1 0.45mi
108 South St Unit D Oyster Bay, NY 1.0 1.0 663 $3,150 $4.75 22d 1 0.45mi
75 South St Oyster Bay, NY 2.0 1.0 800 $2,975 $3.72 24d 1 0.51mi
600 Pine Hollow Rd East Norwich, NY 1.0–2.0 1.0–2.0 1000 $3,204 $3.20 1d 27 0.93mi

HOA detail condo

Monthly dues
$0 · $0/yr
Likely covers
watertrashelectricsnow removalexterior maint.
Assessments
None detected in remarks — confirm with the listing agent.

Listing history 18 events

  1. 2026-06-18
    days on market $369,000 Active 118 DOM
  2. 2026-06-17
    days on market $369,000 Active 117 DOM
  3. 2026-06-16
    days on market $369,000 Active 116 DOM
  4. 2026-06-15
    days on market $369,000 Active 115 DOM
  5. 2026-06-13
    days on market $369,000 Active 113 DOM
  6. 2026-06-13
    days on market $369,000 Active 112 DOM
  7. 2026-06-09
    days on market $369,000 Active 109 DOM
  8. 2026-06-08
    days on market $369,000 Active 108 DOM
  9. 2026-06-07
    days on market $369,000 Active 107 DOM
  10. 2026-06-04
    days on market $369,000 Active 104 DOM
  11. 2026-06-03
    days on market $369,000 Active 103 DOM
  12. 2026-06-02
    days on market $369,000 Active 102 DOM
  13. 2026-06-01
    days on market $369,000 Active 101 DOM
  14. 2026-05-31
    days on market $369,000 Active 100 DOM
  15. 2026-02-20
    listed $369,000 Active 1007-char remark
    Show marketing remark (1007 chars)

    Move right into this rarely available first-floor 1-bedroom co-op in the highly sought-after Top of the Harbour waterfront community. This bright and beautifully maintained home features an updated kitchen with modern appliances, renovated bathroom with walk-in shower, carpeted bedroom, and attractive flooring throughout. Enjoy your own private patio with seasonal water views—perfect for morning coffee or evening relaxation. Ample closet space, updated electric, garage storage, and parking directly in front of the unit add to the convenience. Maintenance includes taxes, heat, water, exterior maintenance, parking, snow removal, and garbage collection, making this an exceptional value. Located just moments from the beach, restaurants, shops, parks, and transportation. First-floor units with water views and private outdoor space in this community are rarely available and highly desirable. Don’t miss this opportunity—schedule your private showing today before it’s gone.

  16. 2017-06-29
    soldstatus $199,900 Closed 286-char remark
    Show marketing remark (286 chars)

    Eik Front To Back Lr Dr Open Floor Plan King Size Master Covered Patio Newly Painted And Carpeted Near Beach Train And Town First Floor Unit With Yard Bright And Sunny Maint Includes Taxes Heat Gas Water And Ground Care, Additional information: Appearance:Mint,Interior Features:Lr/Dr

  17. 2017-04-19
    status Under Contract 286-char remark
    Show marketing remark (286 chars)

    Eik Front To Back Lr Dr Open Floor Plan King Size Master Covered Patio Newly Painted And Carpeted Near Beach Train And Town First Floor Unit With Yard Bright And Sunny Maint Includes Taxes Heat Gas Water And Ground Care, Additional information: Appearance:Mint,Interior Features:Lr/Dr

  18. 2017-03-24
    listed $199,900 New 286-char remark
    Show marketing remark (286 chars)

    Eik Front To Back Lr Dr Open Floor Plan King Size Master Covered Patio Newly Painted And Carpeted Near Beach Train And Town First Floor Unit With Yard Bright And Sunny Maint Includes Taxes Heat Gas Water And Ground Care, Additional information: Appearance:Mint,Interior Features:Lr/Dr

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

Climate risk First Street

  • 🌊 Flood 1/10 Low FEMA zone X (unshaded) · 0% chance over 30 yrs
  • 🔥 Wildfire 2/10 Low
  • 🌡 Heat 5/10 Major 7 d/yr ≥97°F today · 16 d/yr by 30 yrs out
  • 💨 Wind 6/10 Major 67% chance of damaging wind over 30 yrs
  • 🫁 Air quality 4/10 Moderate 4 unhealthy d/yr today · 6 by 30 yrs out

Nearby sold comps map

Loading sold comps map…

Walkable amenities ~0.75 mi

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Taxation est. · year 1

Rental income
$38,449
− Mortgage interest
−$20,670
− Property taxes
−$5,535
− Insurance
−$1,845
− Repairs & maintenance
−$3,076
− Management
−$3,076
− Depreciation
−$10,735
Taxable loss
−$6,487
combined federal + state — saved on this device
Est. tax savings @ 24.0%
+$1,557
After-tax cash flow
$1,331/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
Oyster Bay-East Norwich Central School District
NCES district ID
3622290
Math proficiency
68% ▼ -2.00%
Reading proficiency
67% ▼ -4.00%
Median HH income
$100,262
Composite
62.11/100
National rank
#710
State rank
#120 of 590 in NY

Livability — Oyster Bay

Score
70/100
State rank
#436
US rank
#7650

Category grades

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

Schools grade is shown separately in the Schools card above.

Census & demographics

Census place
Oyster Bay, NY
City population
10,173
Population (ZIP)
10,173

Population outlook (Nassau County) Hauer SSP2

Today (2025)
1,409,302 people
By 2030
1,431,482 · +1.6%
By 2040
1,471,607 · +4.4%
By 2050
1,502,845 · +6.6%
By 2075
1,575,403 · +11.8%
By 2100
1,554,356 · +10.3%

Race, ethnicity, and origin ACS 2023

Neighborhood character
Predominantly White (66%)
Race & ethnicity
White 66% Hispanic / Latino 21% Two or more races 9% Asian 5% Black 2%
Hispanic origin (detail)
Mexican 3%
Common ancestry
Romanian 3% Scotch-Irish 3% Italian 2%
Foreign-born
14% · Canada, China
Languages at home
77% English-only · Spanish 13% Other Indo-European 5% German/W. Germanic 1%

Political lean MEDSL · Nassau

2024 margin
Toss-up / Even · D 47.9% · R 52.1%
2008→2024 swing
-12.6pp toward R · 2008: 8.4pp · 2024: -4.2pp
All cycles
2024: R+4.2 2020: D+9.5 2016: D+5.3 2012: D+6.7 2008: D+8.4

Not yet ingested

Civics

Market trends

HPI YoY
▼ -103.23%
Current HPI
255.4961
Rent YoY
Metro
State GDP YoY
▲ 2.60%
F500 in state
92

Industry mix (Fortune 500 HQ in NY)

Industry F500 HQs Revenue

Price history

+84.6% since first listed
4 events — show timeline
  • 2026-02-20 Listed $369,000 OneKey® MLS as Distributed by MLS Grid
  • 2017-06-29 Sold (MLS) $199,900 OneKey® MLS as Distributed by MLS Grid
  • 2017-04-19 Pending OneKey® MLS as Distributed by MLS Grid
  • 2017-03-24 Listed $199,900 OneKey® MLS as Distributed by MLS Grid

Cash-flow waterfall

monthly

Sold comps — $/sqft

last 12 mo · ≤1 mi

Loading sold comps…