350 Ocean Dr Unit 701N

Key Biscayne, FL 33149 · condos · For Sale · 209 days on market
Asking price$11,495,000
4 beds 6 baths 3,787 sqft
Suggested offer$3,985,590$7,509,410 above the est. market value of $3,985,590.
View on Realtor.com →
Listed by Lucia Marin · One Sotheby's International Realty
Typecondos
Built2014
Price / sqft$3035
Est. value (own analysis)$3,985,590
Rent estimate (own analysis)$15,000/mo
HOANone
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Neighborhood

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Statusfor_sale
Listed date2026-02-05
Removed date
MLSMiamiMLS #A11958326
Coordinates25.69459, -80.15772
Address350 Ocean Dr Unit 701N
CityKey Biscayne
StateFL
Zip33149
Listing ID5963581138
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$11,495,000
Down payment (20.0%)$2,299,000
Loan amount$9,196,000
Closing costs (5.0%)$574,750
Total cash to close$2,873,750
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)$18,200$218,405
Insurance (placeholder 0.8% of price)$7,663$91,960
HOA dues$0$0
Management (0.0% of EGI)$0$0
Maintenance (5.0% of GSR)$750$9,000
Total operating expenses$26,614$319,365
Net operating income (NOI)

Net Operating Income (NOI)

Effective Gross Income − Total Operating Expenses

Effective gross income derived$165,600
Total operating expenses derived$319,365

$165,600 − $319,365 = -$153,765

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$9,196,000
Interest rate (avg 30yr rate) comp6.7%
Term (assumption) assumption30 years

$9,196,000 amortized at 6.7% over 30 years = $59,096/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-$153,765
Annual debt service derived$709,152
Annual CapEx reserve assumption$9,000
Annual PMI assumption$0

(-$153,765 − $709,152 − $9,000 − $0) ÷ 12 = -$72,660

Cap rate

Cap Rate

NOI ÷ Purchase Price

NOI derived-$153,765
Purchase price data$11,495,000

-$153,765 ÷ $11,495,000 = -1.3%

Cash-on-cash

Cash-on-Cash Return

Annual Cash Flow ÷ Total Cash Invested

Annual cash flow derived-$871,917
Total cash to close derived$2,873,750

-$871,917 ÷ $2,873,750 = -30.3%

DSCR

Debt Service Coverage Ratio (DSCR)

NOI ÷ Annual Debt Service

NOI derived-$153,765
Annual debt service derived$709,152

-$153,765 ÷ $709,152 = -0.22

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$11,495,000

($180,000 ÷ 12) ÷ $11,495,000 = 0.1%

Gross rent multiplier

Gross Rent Multiplier (GRM)

Purchase Price ÷ Gross Scheduled Rent

Purchase price data$11,495,000
Gross scheduled rent (annual) comp$180,000

$11,495,000 ÷ $180,000 = 63.9

Operating expense ratio

Operating Expense Ratio

Total Operating Expenses ÷ Effective Gross Income

Total operating expenses derived$319,365
Effective gross income derived$165,600

$319,365 ÷ $165,600 = 192.9%

Break-even occupancy

Break-Even Occupancy

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

Total operating expenses derived$319,365
Annual debt service derived$709,152
Annual PMI assumption$0
Gross scheduled rent (annual) comp$180,000

($319,365 + $709,152 + $0) ÷ $180,000 = 571.4%

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-10.3%
Equity multiple-0.76x
Total return (10yr)-$3,549,625
YearProperty valueNOICash flowLoan balanceEquity
1$11,839,850-$153,765-$871,917$9,096,295$2,743,555
2$12,195,046-$156,781-$875,158$8,989,743$3,205,302
3$12,560,897-$159,848-$878,455$8,875,874$3,685,023
4$12,937,724-$162,966-$881,809$8,754,186$4,183,538
5$13,325,855-$166,135-$885,221$8,624,141$4,701,715
6$13,725,631-$169,356-$888,691$8,485,166$5,240,466
7$14,137,400-$172,630-$892,219$8,336,647$5,800,753
8$14,561,522-$175,958-$895,807$8,177,929$6,383,593
9$14,998,368-$179,338-$899,455$8,008,312$6,990,056
10$15,448,319-$182,773-$903,164$7,827,047$7,621,272
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.