224 Sea View Dr Unit 104

Key Biscayne, FL 33149 · townhomes · For Sale · 34 days on market
Asking price$1,175,000
2 beds 3 baths 1,340 sqft
View on Realtor.com →
Listed by Maureen Jauregui · Coldwell Banker Realty
Typetownhomes
Built1977
Price / sqft$877
Est. value (Zillow ZIP avg)$1,692,135
Rent estimate (own analysis)$7,150/mo
HOANone
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Neighborhood

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Statusfor_sale
Listed date2026-07-30
Removed date
MLSMiamiMLS #A12061913
Coordinates25.68561, -80.15985
Address224 Sea View Dr Unit 104
CityKey Biscayne
StateFL
Zip33149
Listing ID6509049861
Sourceus-real-estate-listings, cached 2026-08-31

ZIP market snapshot (33149)

Typical home value (ZHVI)$1,692,135
Typical rent (ZORI)$7,910/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$1,175,000
Down payment (20.0%)$235,000
Loan amount$940,000
Closing costs (5.0%)$58,750
Total cash to close$293,750
Rent (comp-derived)$7,150$85,800
Vacancy loss (8.0%)

Vacancy Loss

Gross Scheduled Rent × Vacancy Rate

Gross scheduled rent (annual) comp$85,800
Vacancy rate (assumption) assumption8.0%

$85,800 × 8.0% = $6,864

Effective gross income$6,578$78,936
Property tax (placeholder 1.9% of price)$1,860$22,325
Insurance (placeholder 0.8% of price)$783$9,400
HOA dues$0$0
Management (0.0% of EGI)$0$0
Maintenance (5.0% of GSR)$358$4,290
Total operating expenses$3,001$36,015
Net operating income (NOI)

Net Operating Income (NOI)

Effective Gross Income − Total Operating Expenses

Effective gross income derived$78,936
Total operating expenses derived$36,015

$78,936 − $36,015 = $42,921

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$940,000
Interest rate (avg 30yr rate) comp6.7%
Term (assumption) assumption30 years

$940,000 amortized at 6.7% over 30 years = $6,041/mo

CapEx reserve (5.0% of GSR)$358$4,290
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$42,921
Annual debt service derived$72,488
Annual CapEx reserve assumption$4,290
Annual PMI assumption$0

($42,921 − $72,488 − $4,290 − $0) ÷ 12 = -$2,821

Cap rate

Cap Rate

NOI ÷ Purchase Price

NOI derived$42,921
Purchase price data$1,175,000

$42,921 ÷ $1,175,000 = 3.7%

Cash-on-cash

Cash-on-Cash Return

Annual Cash Flow ÷ Total Cash Invested

Annual cash flow derived-$33,857
Total cash to close derived$293,750

-$33,857 ÷ $293,750 = -11.5%

DSCR

Debt Service Coverage Ratio (DSCR)

NOI ÷ Annual Debt Service

NOI derived$42,921
Annual debt service derived$72,488

$42,921 ÷ $72,488 = 0.59

Rent-to-price (1% rule)

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

(Gross Scheduled Rent ÷ 12) ÷ Purchase Price

Gross scheduled rent (annual) comp$85,800
Purchase price data$1,175,000

($85,800 ÷ 12) ÷ $1,175,000 = 0.6%

Gross rent multiplier

Gross Rent Multiplier (GRM)

Purchase Price ÷ Gross Scheduled Rent

Purchase price data$1,175,000
Gross scheduled rent (annual) comp$85,800

$1,175,000 ÷ $85,800 = 13.7

Operating expense ratio

Operating Expense Ratio

Total Operating Expenses ÷ Effective Gross Income

Total operating expenses derived$36,015
Effective gross income derived$78,936

$36,015 ÷ $78,936 = 45.6%

Break-even occupancy

Break-Even Occupancy

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

Total operating expenses derived$36,015
Annual debt service derived$72,488
Annual PMI assumption$0
Gross scheduled rent (annual) comp$85,800

($36,015 + $72,488 + $0) ÷ $85,800 = 126.5%

Comparables

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

AddressTypeBedsBathsSqftAsking rentListedDays on market
townhomes22875$3,7002026-08-27
townhomes231,460$8,5002026-07-31
townhomes221,042$6,5002026-01-14
townhomes231,340$7,8002026-08-28

798 Crandon Blvd Unit 34C

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms2 bd / 2 ba
Square footage875
Listed2026-08-27
Days on market

Asking rent: $3,700

View on Zillow →

253 E Enid Dr Unit 57

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms2 bd / 3 ba
Square footage1,460
Listed2026-07-31
Days on market

Asking rent: $8,500

View on Zillow →

881 Ocean Dr Apt TH15

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms2 bd / 2 ba
Square footage1,042
Listed2026-01-14
Days on market

Asking rent: $6,500

View on Zillow →

226 Sea View Dr Unit 105

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms2 bd / 3 ba
Square footage1,340
Listed2026-08-28
Days on market

Asking rent: $7,800

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.

No recent recorded sales cached yet for this ZIP.

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
881 Ocean Dr Apt 16Fcondos221,875$2,400,000
737 Crandon Blvd Ph 1condos232,060$2,250,000
177 Ocean Lane Dr Apt 208condos221,260$1,125,000
201 Crandon Blvd Apt 707condos221,880$2,100,000
170 Ocean Lane Dr Apt 310condos221,335$769,900
101 Crandon Blvd Apt 265condos221,790$1,495,000
613 Ocean Dr Apt 5Dcondos221,496$1,770,000
1111 Crandon Blvd Apt B506condos221,409$1,350,000

10-year hold projection

IRR2.5%
Equity multiple1.41x
Total return (10yr)$272,511
YearProperty valueNOICash flowLoan balanceEquity
1$1,210,250$42,921-$33,857$929,808$280,442
2$1,246,558$44,389-$32,497$918,917$327,641
3$1,283,954$45,905-$31,091$907,277$376,677
4$1,322,473$47,471-$29,637$894,839$427,634
5$1,362,147$49,089-$28,134$881,546$480,601
6$1,403,011$50,761-$26,581$867,340$535,671
7$1,445,102$52,487-$24,976$852,159$592,943
8$1,488,455$54,271-$23,317$835,935$652,520
9$1,533,108$56,113-$21,602$818,597$714,512
10$1,579,102$58,016-$19,830$800,068$779,033
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.