545 Sabal Palm Dr

Key Biscayne, FL 33149 · single_family · For Sale · 390 days on market
Asking price$7,950,000
5 beds 5 baths 4,166 sqft
Suggested offer$5,960,487$1,989,513 above the est. market value of $5,960,487.
View on Realtor.com →
Listed by Brigitte De Langeron · DLS International Realty
Typesingle_family
Built2012
Price / sqft$1908
Est. value (own analysis)$5,960,487
Rent estimate (own analysis)$28,000/mo
HOANone
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Neighborhood

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Statusfor_sale
Listed date2025-08-08
Removed date
MLSMiamiMLS #A11855412
Coordinates25.69145, -80.17122
Address545 Sabal Palm Dr
CityKey Biscayne
StateFL
Zip33149
Listing ID5929070769
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$7,950,000
Down payment (20.0%)$1,590,000
Loan amount$6,360,000
Closing costs (5.0%)$397,500
Total cash to close$1,987,500
Rent (comp-derived)$28,000$336,000
Vacancy loss (8.0%)

Vacancy Loss

Gross Scheduled Rent × Vacancy Rate

Gross scheduled rent (annual) comp$336,000
Vacancy rate (assumption) assumption8.0%

$336,000 × 8.0% = $26,880

Effective gross income$25,760$309,120
Property tax (placeholder 1.9% of price)$12,588$151,050
Insurance (placeholder 0.8% of price)$5,300$63,600
HOA dues$0$0
Management (0.0% of EGI)$0$0
Maintenance (5.0% of GSR)$1,400$16,800
Total operating expenses$19,288$231,450
Net operating income (NOI)

Net Operating Income (NOI)

Effective Gross Income − Total Operating Expenses

Effective gross income derived$309,120
Total operating expenses derived$231,450

$309,120 − $231,450 = $77,670

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$6,360,000
Interest rate (avg 30yr rate) comp6.7%
Term (assumption) assumption30 years

$6,360,000 amortized at 6.7% over 30 years = $40,871/mo

CapEx reserve (5.0% of GSR)$1,400$16,800
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$77,670
Annual debt service derived$490,453
Annual CapEx reserve assumption$16,800
Annual PMI assumption$0

($77,670 − $490,453 − $16,800 − $0) ÷ 12 = -$35,799

Cap rate

Cap Rate

NOI ÷ Purchase Price

NOI derived$77,670
Purchase price data$7,950,000

$77,670 ÷ $7,950,000 = 1.0%

Cash-on-cash

Cash-on-Cash Return

Annual Cash Flow ÷ Total Cash Invested

Annual cash flow derived-$429,583
Total cash to close derived$1,987,500

-$429,583 ÷ $1,987,500 = -21.6%

DSCR

Debt Service Coverage Ratio (DSCR)

NOI ÷ Annual Debt Service

NOI derived$77,670
Annual debt service derived$490,453

$77,670 ÷ $490,453 = 0.16

Rent-to-price (1% rule)

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

(Gross Scheduled Rent ÷ 12) ÷ Purchase Price

Gross scheduled rent (annual) comp$336,000
Purchase price data$7,950,000

($336,000 ÷ 12) ÷ $7,950,000 = 0.4%

Gross rent multiplier

Gross Rent Multiplier (GRM)

Purchase Price ÷ Gross Scheduled Rent

Purchase price data$7,950,000
Gross scheduled rent (annual) comp$336,000

$7,950,000 ÷ $336,000 = 23.7

Operating expense ratio

Operating Expense Ratio

Total Operating Expenses ÷ Effective Gross Income

Total operating expenses derived$231,450
Effective gross income derived$309,120

$231,450 ÷ $309,120 = 74.9%

Break-even occupancy

Break-Even Occupancy

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

Total operating expenses derived$231,450
Annual debt service derived$490,453
Annual PMI assumption$0
Gross scheduled rent (annual) comp$336,000

($231,450 + $490,453 + $0) ÷ $336,000 = 214.9%

Comparables

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

AddressTypeBedsBathsSqftAsking rentListedDays on market
single_family563,650$28,5002026-05-19
single_family565,421$25,0002026-08-03
single_family563,495$20,0002026-06-10
single_family563,661$55,0002026-07-20
single_family553,202$40,0002026-03-28
single_family563,633$21,5002026-05-21
single_family565,341$70,0002025-05-26
single_family553,149$22,0002026-07-01
single_family573,475$27,5002026-05-21
single_family564,700$35,5002026-03-18

125 Hampton Ln

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms5 bd / 6 ba
Square footage3,650
Listed2026-05-19
Days on market

Asking rent: $28,500

View on Zillow →

685 Harbor Ln

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms5 bd / 6 ba
Square footage5,421
Listed2026-08-03
Days on market

Asking rent: $25,000

View on Zillow →

335 W Enid Dr

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms5 bd / 6 ba
Square footage3,495
Listed2026-06-10
Days on market

Asking rent: $20,000

View on Zillow →

270 Island Dr

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms5 bd / 6 ba
Square footage3,661
Listed2026-07-20
Days on market

Asking rent: $55,000

View on Zillow →

330 Gulf Rd

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms5 bd / 5 ba
Square footage3,202
Listed2026-03-28
Days on market

Asking rent: $40,000

View on Zillow →

350 Redwood Ln

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms5 bd / 6 ba
Square footage3,633
Listed2026-05-21
Days on market

Asking rent: $21,500

View on Zillow →

201 Knollwood Dr

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms5 bd / 6 ba
Square footage5,341
Listed2025-05-26
Days on market

Asking rent: $70,000

View on Zillow →

340 Atlantic Rd

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms5 bd / 5 ba
Square footage3,149
Listed2026-07-01
Days on market

Asking rent: $22,000

View on Zillow →

442 Ridgewood Rd

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms5 bd / 7 ba
Square footage3,475
Listed2026-05-21
Days on market

Asking rent: $27,500

View on Zillow →

530 Harbor Dr

Key Biscayne, 33149 · rent comp

Bedrooms / bathrooms5 bd / 6 ba
Square footage4,700
Listed2026-03-18
Days on market

Asking rent: $35,500

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
346 Gulf Rdsingle_family563,285$4,700,0002026-07-27
677 Hampton Lnsingle_family542,429$3,125,0002026-03-09
670 Allendale Rdsingle_family552,320$3,475,0002026-01-27
261 Greenwood Drsingle_family563,525$6,275,0002025-12-11
201 Buttonwood Drsingle_family553,791$5,265,0002025-12-09
100 Hampton Lnsingle_family563,584$6,200,0002025-12-04
220 Cypress Drsingle_family564,089$4,600,0002025-10-10

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
485 W Matheson Drsingle_family5911,528$237,000,000
501 Bay Lnsingle_family554,759$5,990,000
520 S Mashta Drsingle_family543,085$19,900,000
571 Glenridge Rdsingle_family573,768$7,490,000
24 Grand Bay Estates Cirsingle_family564,220$4,950,000
524 Warren Lnsingle_family542,700$3,730,000
445 Grand Bay Dr Ph 1Acondos568,435$18,900,000
445 Ridgewood Rdsingle_family563,688$6,685,000

10-year hold projection

IRR-4.5%
Equity multiple0.25x
Total return (10yr)-$461,144
YearProperty valueNOICash flowLoan balanceEquity
1$8,188,500$77,670-$429,583$6,291,043$1,897,457
2$8,434,155$81,157-$426,515$6,217,352$2,216,803
3$8,687,180$84,778-$423,325$6,138,599$2,548,580
4$8,947,795$88,537-$420,007$6,054,439$2,893,356
5$9,216,229$92,440-$416,557$5,964,499$3,251,729
6$9,492,716$96,490-$412,970$5,868,383$3,624,332
7$9,777,497$100,694-$409,241$5,765,667$4,011,830
8$10,070,822$105,057-$405,365$5,655,897$4,414,925
9$10,372,947$109,585-$401,337$5,538,589$4,834,358
10$10,684,135$114,282-$397,152$5,413,226$5,270,910
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.