1233 102nd St

Bay Harbor Islands, FL 33154 · single_family · For Sale · 302 days on market
Asking price$6,000,000
5 beds 5 baths 4,126 sqft
View on Realtor.com →
Listed by Michael Martirena · COMPASS
Typesingle_family
Built1966
Price / sqft$1454
Est. value (own analysis)$6,400,271
Rent estimate (own analysis)$28,950/mo
HOANone
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Neighborhood

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Statusfor_sale
Listed date2025-11-04
Removed date
MLSMiamiMLS #A11905092
Coordinates25.89178, -80.13583
Address1233 102nd St
CityBay Harbor Islands
StateFL
Zip33154
Listing ID5501765439
Sourceus-real-estate-listings, cached 2026-08-31

ZIP market snapshot (33154)

Typical home value (ZHVI)$1,230,561
Typical rent (ZORI)$4,738/mo
Zillow Research's ZHVI (home value index) and ZORI (rent index) for this ZIP, as of 2026-07 — free published data, refreshed monthly, no RentCast quota spent. "Typical value/rent" is a smoothed index, not a literal median of active listings.

Underwriting (buy-and-hold, default assumptions)

Purchase price$6,000,000
Down payment (20.0%)$1,200,000
Loan amount$4,800,000
Closing costs (5.0%)$300,000
Total cash to close$1,500,000
Rent (comp-derived)$28,950$347,400
Vacancy loss (8.0%)

Vacancy Loss

Gross Scheduled Rent × Vacancy Rate

Gross scheduled rent (annual) comp$347,400
Vacancy rate (assumption) assumption8.0%

$347,400 × 8.0% = $27,792

Effective gross income$26,634$319,608
Property tax (placeholder 1.9% of price)$9,500$114,000
Insurance (placeholder 0.8% of price)$4,000$48,000
HOA dues$0$0
Management (0.0% of EGI)$0$0
Maintenance (5.0% of GSR)$1,448$17,370
Total operating expenses$14,948$179,370
Net operating income (NOI)

Net Operating Income (NOI)

Effective Gross Income − Total Operating Expenses

Effective gross income derived$319,608
Total operating expenses derived$179,370

$319,608 − $179,370 = $140,238

Debt service (6.66%, avg 30yr rate as of 2026-08-27, 30yr amortizing)

Monthly Principal & Interest

Standard amortization on the loan amount, at the effective rate and term

Loan amount derived$4,800,000
Interest rate (avg 30yr rate) comp6.7%
Term (assumption) assumption30 years

$4,800,000 amortized at 6.7% over 30 years = $30,846/mo

CapEx reserve (5.0% of GSR)$1,448$17,370
Mortgage insurance (PMI) (0.0% of loan, not required — down payment ≥ 20%)$0$0
Cash flow

Monthly Cash Flow

(NOI − Annual Debt Service − Annual CapEx Reserve − Annual PMI) ÷ 12

NOI derived$140,238
Annual debt service derived$370,153
Annual CapEx reserve assumption$17,370
Annual PMI assumption$0

($140,238 − $370,153 − $17,370 − $0) ÷ 12 = -$20,607

Cap rate

Cap Rate

NOI ÷ Purchase Price

NOI derived$140,238
Purchase price data$6,000,000

$140,238 ÷ $6,000,000 = 2.3%

Cash-on-cash

Cash-on-Cash Return

Annual Cash Flow ÷ Total Cash Invested

Annual cash flow derived-$247,285
Total cash to close derived$1,500,000

-$247,285 ÷ $1,500,000 = -16.5%

DSCR

Debt Service Coverage Ratio (DSCR)

NOI ÷ Annual Debt Service

NOI derived$140,238
Annual debt service derived$370,153

$140,238 ÷ $370,153 = 0.38

Rent-to-price (1% rule)

Rent-to-Price (the "1% rule")

(Gross Scheduled Rent ÷ 12) ÷ Purchase Price

Gross scheduled rent (annual) comp$347,400
Purchase price data$6,000,000

($347,400 ÷ 12) ÷ $6,000,000 = 0.5%

Gross rent multiplier

Gross Rent Multiplier (GRM)

Purchase Price ÷ Gross Scheduled Rent

Purchase price data$6,000,000
Gross scheduled rent (annual) comp$347,400

$6,000,000 ÷ $347,400 = 17.3

Operating expense ratio

Operating Expense Ratio

Total Operating Expenses ÷ Effective Gross Income

Total operating expenses derived$179,370
Effective gross income derived$319,608

$179,370 ÷ $319,608 = 56.1%

Break-even occupancy

Break-Even Occupancy

(Total OpEx + Annual Debt Service + Annual PMI) ÷ Gross Scheduled Rent

Total operating expenses derived$179,370
Annual debt service derived$370,153
Annual PMI assumption$0
Gross scheduled rent (annual) comp$347,400

($179,370 + $370,153 + $0) ÷ $347,400 = 158.2%

Comparables

Same ZIP. Real active rental listings, used to derive the rent estimate above.

AddressTypeBedsBathsSqftAsking rentListedDays on market
single_family554,737$28,9502026-05-11
single_family564,566$35,0002026-04-16
single_family554,486$26,9002026-03-28

9380 Bay Dr

Surfside, 33154 · rent comp

Bedrooms / bathrooms5 bd / 5 ba
Square footage4,737
Listed2026-05-11
Days on market

Asking rent: $28,950

View on Zillow →

145 Biscay Dr

Bal Harbour, 33154 · rent comp

Bedrooms / bathrooms5 bd / 6 ba
Square footage4,566
Listed2026-04-16
Days on market

Asking rent: $35,000

View on Zillow →

1249 Biscaya Dr

Surfside, 33154 · rent comp

Bedrooms / bathrooms5 bd / 5 ba
Square footage4,486
Listed2026-03-28
Days on market

Asking rent: $26,900

View on Zillow →

Same ZIP & bedroom count. Closed sales from Realtor.com over the last 12 months, matched to this property's type — real transaction prices, not asking prices. Falls back to Miami-Dade County public records (property appraiser tax roll) when Realtor.com has no sales on file for the area.

AddressTypeBedsBathsLiving sqftSale priceSale date
145 Harbour Waysingle_family573,142$11,162,5002026-09-01
8826 Froude Avesingle_family553,124$3,400,0002026-08-04
500 94th Stsingle_family563,320$5,150,0002026-06-15
166 Bal Bay Drsingle_family566,323$26,000,0002026-06-15
1251 96th Stsingle_family565,009$3,850,0002026-06-08
1276 Biscaya Drsingle_family564,913$11,400,0002026-05-13
9400 E Broadview Drsingle_family544,205$4,570,0002026-05-06
9224 Bay Drsingle_family545,484$13,875,0002026-02-23
8851 Froude Avesingle_family553,141$2,875,0002026-01-14
26 Indian Creek Island Rdsingle_family5617,227$35,000,0002025-12-24
8858 Froude Avesingle_family532,507$2,595,0002025-10-16

Same ZIP. Other properties currently for sale nearby — asking prices, not closed sale prices. Not a price comp; see Sold comps for actual transaction history.

AddressTypeBedsBathsSqftAsking priceDays on market
10203 Collins Ave Unit LPH2701condos577,774$38,500,000
9001 Collins Ave Unit S201condos575,729$21,900,000
8777 Collins Ave Apt 702condos568,724$40,150,000
9349 Collins Ave Apt 1101condos576,726$24,995,000
10155 Collins Ave Apt 1210condos553,300$4,650,000
9324 Abbott Avesingle_family532,900$2,500,000
145 Harbour Waysingle_family573,142$13,500,000
9110 W Bay Harbor Dr Apt 5condos576,122$11,250,000

10-year hold projection

IRR-1.0%
Equity multiple0.83x
Total return (10yr)$536,308
YearProperty valueNOICash flowLoan balanceEquity
1$6,180,000$140,238-$247,285$4,747,957$1,432,043
2$6,365,400$145,342-$242,615$4,692,341$1,673,059
3$6,556,362$150,622-$237,781$4,632,905$1,923,457
4$6,753,053$156,082-$232,776$4,569,388$2,183,665
5$6,955,644$161,731-$227,596$4,501,509$2,454,135
6$7,164,314$167,573-$222,233$4,428,969$2,735,345
7$7,379,243$173,614-$216,682$4,351,447$3,027,796
8$7,600,620$179,863-$210,938$4,268,602$3,332,019
9$7,828,639$186,325-$204,992$4,180,067$3,648,572
10$8,063,498$193,007-$198,838$4,085,453$3,978,045
Assumes 3.0% annual rent growth, 2.5% expense growth, 3.0% appreciation, and a 6.0% selling cost at exit — all placeholder assumptions, not market-derived.
All figures are estimates for evaluation purposes only, not investment, tax, legal, or insurance advice. Property tax is estimated from a real matched tax bill or millage rate when available, a placeholder % of price otherwise; insurance is scaled by flood and wind risk where those are known and a flat percentage otherwise — never a real quote. Verify all of them, along with association restrictions and permit status, before committing capital. Rent estimates come from real comps or Zillow’s ZIP index, not appraisals.