100 Ocean Lane Dr Apt 303

Key Biscayne, FL 33149 · condos · For Sale · 1 days on market
Asking price$505,000
1 beds 2 baths 870 sqft
View on Realtor.com →
Listed by Nestor J Palacios · Luxe Properties
Typecondos
Built1973
Price / sqft$580
Est. value (own analysis)$626,635
Rent estimate (own analysis)$3,350/mo
HOA$1,065/mo
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Neighborhood

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Statusfor_sale
Listed date2026-09-01
Removed date
MLSMiamiMLS #A12081613
Coordinates25.69874, -80.16026
Address100 Ocean Lane Dr Apt 303
CityKey Biscayne
StateFL
Zip33149
Listing ID6155223741
Sourceus-real-estate-listings, cached 2026-09-02

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$505,000
Down payment (20.0%)$101,000
Loan amount$404,000
Closing costs (5.0%)$25,250
Total cash to close$126,250
Rent (comp-derived)$3,350$40,200
Vacancy loss (8.0%)

Vacancy Loss

Gross Scheduled Rent × Vacancy Rate

Gross scheduled rent (annual) comp$40,200
Vacancy rate (assumption) assumption8.0%

$40,200 × 8.0% = $3,216

Effective gross income$3,082$36,984
Property tax (placeholder 1.9% of price)$800$9,595
Insurance (placeholder 0.8% of price)$337$4,040
HOA dues$1,065$12,780
Management (0.0% of EGI)$0$0
Maintenance (5.0% of GSR)$168$2,010
Total operating expenses$2,369$28,425
Net operating income (NOI)

Net Operating Income (NOI)

Effective Gross Income − Total Operating Expenses

Effective gross income derived$36,984
Total operating expenses derived$28,425

$36,984 − $28,425 = $8,559

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$404,000
Interest rate (avg 30yr rate) comp6.7%
Term (assumption) assumption30 years

$404,000 amortized at 6.7% over 30 years = $2,596/mo

CapEx reserve (5.0% of GSR)$168$2,010
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$8,559
Annual debt service derived$31,155
Annual CapEx reserve assumption$2,010
Annual PMI assumption$0

($8,559 − $31,155 − $2,010 − $0) ÷ 12 = -$2,050

Cap rate

Cap Rate

NOI ÷ Purchase Price

NOI derived$8,559
Purchase price data$505,000

$8,559 ÷ $505,000 = 1.7%

Cash-on-cash

Cash-on-Cash Return

Annual Cash Flow ÷ Total Cash Invested

Annual cash flow derived-$24,606
Total cash to close derived$126,250

-$24,606 ÷ $126,250 = -19.5%

DSCR

Debt Service Coverage Ratio (DSCR)

NOI ÷ Annual Debt Service

NOI derived$8,559
Annual debt service derived$31,155

$8,559 ÷ $31,155 = 0.27

Rent-to-price (1% rule)

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

(Gross Scheduled Rent ÷ 12) ÷ Purchase Price

Gross scheduled rent (annual) comp$40,200
Purchase price data$505,000

($40,200 ÷ 12) ÷ $505,000 = 0.7%

Gross rent multiplier

Gross Rent Multiplier (GRM)

Purchase Price ÷ Gross Scheduled Rent

Purchase price data$505,000
Gross scheduled rent (annual) comp$40,200

$505,000 ÷ $40,200 = 12.6

Operating expense ratio

Operating Expense Ratio

Total Operating Expenses ÷ Effective Gross Income

Total operating expenses derived$28,425
Effective gross income derived$36,984

$28,425 ÷ $36,984 = 76.9%

Break-even occupancy

Break-Even Occupancy

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

Total operating expenses derived$28,425
Annual debt service derived$31,155
Annual PMI assumption$0
Gross scheduled rent (annual) comp$40,200

($28,425 + $31,155 + $0) ÷ $40,200 = 148.2%

Comparables

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

AddressTypeBedsBathsSqftAsking rentListedDays on market
condos11608$2,4002026-06-17
condos12725$3,0002026-08-05
condos12972$3,1502026-05-08
condos11676$3,2502026-08-25
condos121,103$4,3002026-07-29
condos121,059$5,0002026-04-30
condos12744$3,3502026-06-22
condos12895$4,0002026-07-02
apartment12725$3,2502026-04-17
condos12895$4,5002026-08-10
condos12895$5,0002026-08-20
condos12972$3,5502026-01-07
condos12875$3,3502026-06-03
condos12840$5,0002026-08-04
condos121,009$5,5002026-07-16
condos12875$3,350
condos11676$2,7992026-09-01

255 Sunrise Dr Apt 103

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 1 ba
Square footage608
Listed2026-06-17
Days on market

Asking rent: $2,400

View on Zillow →

240 Galen Dr Apt 302

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage725
Listed2026-08-05
Days on market

Asking rent: $3,000

View on Zillow →

55 Ocean Lane Dr Apt 3030

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage972
Listed2026-05-08
Days on market

Asking rent: $3,150

View on Zillow →

195 Sunrise Dr Apt 8

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 1 ba
Square footage676
Listed2026-08-25
Days on market

Asking rent: $3,250

View on Zillow →

151 Crandon Blvd Apt 127

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage1,103
Listed2026-07-29
Days on market

Asking rent: $4,300

View on Zillow →

201 Crandon Blvd Apt 505

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage1,059
Listed2026-04-30
Days on market

Asking rent: $5,000

View on Zillow →

77 Crandon Blvd Apt 2B

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage744
Listed2026-06-22
Days on market

Asking rent: $3,350

View on Zillow →

199 Ocean Lane Dr Apt 903

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage895
Listed2026-07-02
Days on market

Asking rent: $4,000

View on Zillow →

240 Galen Dr Apt 112

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage725
Listed2026-04-17
Days on market

Asking rent: $3,250

View on Zillow →

155 Ocean Lane Dr Apt 702

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage895
Listed2026-08-10
Days on market

Asking rent: $4,500

View on Zillow →

199 Ocean Lane Dr Apt 902

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage895
Listed2026-08-20
Days on market

Asking rent: $5,000

View on Zillow →

55 Ocean Lane Dr Apt 1030

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage972
Listed2026-01-07
Days on market

Asking rent: $3,550

View on Zillow →

210 Sea View Dr Apt 207

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage875
Listed2026-06-03
Days on market

Asking rent: $3,350

View on Zillow →

177 Ocean Lane Dr Apt 1203

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage840
Listed2026-08-04
Days on market

Asking rent: $5,000

View on Zillow →

201 Crandon Blvd Apt 220

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage1,009
Listed2026-07-16
Days on market

Asking rent: $5,500

View on Zillow →

210 Sea View Dr # CU207

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 2 ba
Square footage875
Listed
Days on market

Asking rent: $3,350

View on Zillow →

255 Sunrise Dr Apt 307

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms1 bd / 1 ba
Square footage676
Listed2026-09-01
Days on market

Asking rent: $2,799

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
255 Sunrise Dr Apt 207condos11676$480,0002026-08-03
155 Ocean Lane Dr Apt 707condos12895$635,0002026-07-30
100 Ocean Lane Dr Apt 202condos12870$512,5002026-07-24
300 Sunrise Dr Apt 1Bcondos11590$430,0002026-07-10
455 Grand Bay Dr Unit 618-19condos11791$1,605,0002026-07-01
177 Ocean Lane Dr Apt 302condos12840$780,0002026-06-05
177 Ocean Lane Dr Apt 703condos12840$854,0002026-05-28
77 Crandon Blvd Apt 5Bcondos12744$480,0002026-05-26
101 Ocean Lane Dr Apt 205condos12972$530,0002026-04-16
290 Sunrise Dr Unit 2Lcondos11610$490,0002026-04-08
325 Fernwood Rd Apt 5condos11474$395,0002026-02-02
155 Ocean Lane Dr Apt 706condos12895$637,0002026-01-20
55 Ocean Lane Dr Apt 1026condos12972$550,0002025-10-31
200 Ocean Lane Dr Apt 305condos121,259$920,0002025-09-11

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 Galen Dr Apt 202condos12730$399,000
255 Sunrise Dr Apt 107condos11608$459,000
condos12895$845,000
55 Ocean Lane Dr Apt 3030condos12972$580,000
155 Ocean Lane Dr Apt 302condos12895$749,000
210 Sea View Dr Apt 207condos12875$579,000
200 Ocean Lane Dr Apt PB4condos111,217$1,400,000
251 Galen Dr Apt 302condos12854$480,000

10-year hold projection

IRR-2.9%
Equity multiple0.52x
Total return (10yr)$5,278
YearProperty valueNOICash flowLoan balanceEquity
1$520,150$8,559-$24,606$399,620$120,530
2$535,755$8,958-$24,257$394,939$140,816
3$551,827$9,372-$23,894$389,936$161,891
4$568,382$9,803-$23,516$384,590$183,792
5$585,433$10,250-$23,123$378,877$206,556
6$602,996$10,714-$22,714$372,772$230,225
7$621,086$11,197-$22,289$366,247$254,839
8$639,719$11,697-$21,847$359,274$280,445
9$658,910$12,217-$21,386$351,823$307,088
10$678,678$12,757-$20,908$343,859$334,818
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.