199 Ocean Lane Dr Apt 401

Key Biscayne, FL 33149 · condos · For Sale · 188 days on market
Asking price$4,500,000
4 beds 4 baths 2,825 sqft
Suggested offer$2,973,143$1,526,857 above the est. market value of $2,973,143.
View on Realtor.com →
Listed by Florencia Yagodnik · Swann Realty Partners, LLC.
Typecondos
Built1974
Price / sqft$1593
Est. value (own analysis)$2,973,143
Rent estimate (own analysis)$15,000/mo
HOA$2,893/mo
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Neighborhood

Show every detail
Statusfor_sale
Listed date2026-02-26
Removed date
MLSMiamiMLS #A11970482
Coordinates25.69931, -80.15710
Address199 Ocean Lane Dr Apt 401
CityKey Biscayne
StateFL
Zip33149
Listing ID6124293009
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$4,500,000
Down payment (20.0%)$900,000
Loan amount$3,600,000
Closing costs (5.0%)$225,000
Total cash to close$1,125,000
Rent (comp-derived)$15,000$180,000
Vacancy loss (8.0%)

Vacancy Loss

Gross Scheduled Rent × Vacancy Rate

Gross scheduled rent (annual) comp$180,000
Vacancy rate (assumption) assumption8.0%

$180,000 × 8.0% = $14,400

Effective gross income$13,800$165,600
Property tax (placeholder 1.9% of price)$7,125$85,500
Insurance (placeholder 0.8% of price)$3,000$36,000
HOA dues$2,893$34,716
Management (0.0% of EGI)$0$0
Maintenance (5.0% of GSR)$750$9,000
Total operating expenses$13,768$165,216
Net operating income (NOI)

Net Operating Income (NOI)

Effective Gross Income − Total Operating Expenses

Effective gross income derived$165,600
Total operating expenses derived$165,216

$165,600 − $165,216 = $384

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$3,600,000
Interest rate (avg 30yr rate) comp6.7%
Term (assumption) assumption30 years

$3,600,000 amortized at 6.7% over 30 years = $23,135/mo

CapEx reserve (5.0% of GSR)$750$9,000
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$384
Annual debt service derived$277,615
Annual CapEx reserve assumption$9,000
Annual PMI assumption$0

($384 − $277,615 − $9,000 − $0) ÷ 12 = -$23,853

Cap rate

Cap Rate

NOI ÷ Purchase Price

NOI derived$384
Purchase price data$4,500,000

$384 ÷ $4,500,000 = 0.0%

Cash-on-cash

Cash-on-Cash Return

Annual Cash Flow ÷ Total Cash Invested

Annual cash flow derived-$286,231
Total cash to close derived$1,125,000

-$286,231 ÷ $1,125,000 = -25.4%

DSCR

Debt Service Coverage Ratio (DSCR)

NOI ÷ Annual Debt Service

NOI derived$384
Annual debt service derived$277,615

$384 ÷ $277,615 = 0.00

Rent-to-price (1% rule)

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

(Gross Scheduled Rent ÷ 12) ÷ Purchase Price

Gross scheduled rent (annual) comp$180,000
Purchase price data$4,500,000

($180,000 ÷ 12) ÷ $4,500,000 = 0.3%

Gross rent multiplier

Gross Rent Multiplier (GRM)

Purchase Price ÷ Gross Scheduled Rent

Purchase price data$4,500,000
Gross scheduled rent (annual) comp$180,000

$4,500,000 ÷ $180,000 = 25.0

Operating expense ratio

Operating Expense Ratio

Total Operating Expenses ÷ Effective Gross Income

Total operating expenses derived$165,216
Effective gross income derived$165,600

$165,216 ÷ $165,600 = 99.8%

Break-even occupancy

Break-Even Occupancy

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

Total operating expenses derived$165,216
Annual debt service derived$277,615
Annual PMI assumption$0
Gross scheduled rent (annual) comp$180,000

($165,216 + $277,615 + $0) ÷ $180,000 = 246.0%

Comparables

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

AddressTypeBedsBathsSqftAsking rentListedDays on market
condos431,650$12,0002026-07-17
condos452,957$15,0002026-04-20
condos432,174$18,0002026-03-20

200 Ocean Lane Dr Apt 108

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms4 bd / 3 ba
Square footage1,650
Listed2026-07-17
Days on market

Asking rent: $12,000

View on Zillow →

151 Crandon Blvd Apt 500

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms4 bd / 5 ba
Square footage2,957
Listed2026-04-20
Days on market

Asking rent: $15,000

View on Zillow →

725 Crandon Blvd Apt 203

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms4 bd / 3 ba
Square footage2,174
Listed2026-03-20
Days on market

Asking rent: $18,000

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
50 Ocean Lane Dr Apt 601condos431,730$1,500,0002026-08-20
791 Crandon Blvd Apt 1408condos465,207$9,400,0002026-06-26
200 Sunrise Dr Unit 200Ccondos441,750$1,800,0002026-04-20
151 Crandon Blvd Apt 1226condos443,127$2,100,0002026-04-10
765 Crandon Blvd Apt 102condos453,368$3,625,0002026-04-08
791 Crandon Blvd Apt 507condos463,581$6,400,0002026-03-31
202 Sunrise Dr Unit 202Ccondos441,750$1,750,0002026-01-22
200 Sunrise Dr Unit 200Acondos441,750$2,000,0002025-12-03

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
200 Ocean Lane Dr Apt 501condos441,880$3,850,000
201 Crandon Blvd Apt 174townhomes463,254$5,100,000
255 Ridgewood Rdsingle_family432,177$3,550,000
100 Cape Florida Drsingle_family498,240$19,800,000
161 Cape Florida Drsingle_family466,661$14,990,000
640 S Mashta Drsingle_family443,620$16,800,000
631 N Mashta Drsingle_family452,255$18,500,000
445 Grand Bay Dr Apt 303condos453,480$3,850,000

10-year hold projection

IRR-7.0%
Equity multiple-0.19x
Total return (10yr)-$746,004
YearProperty valueNOICash flowLoan balanceEquity
1$4,635,000$384-$286,231$3,560,968$1,074,032
2$4,774,050$1,222-$285,618$3,519,256$1,254,794
3$4,917,272$2,105-$284,965$3,474,679$1,442,593
4$5,064,790$3,036-$284,271$3,427,041$1,637,749
5$5,216,733$4,017-$283,532$3,376,132$1,840,602
6$5,373,235$5,049-$282,748$3,321,726$2,051,509
7$5,534,432$6,135-$281,917$3,263,585$2,270,847
8$5,700,465$7,277-$281,036$3,201,451$2,499,014
9$5,871,479$8,477-$280,103$3,135,050$2,736,429
10$6,047,624$9,738-$279,116$3,064,090$2,983,534
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.