4430 Nautilus Dr
Miami Beach, FL 33140 · single_family · For Sale · 76 days on market
Asking price$7,295,000
7 beds 7 baths 4,501 sqft
Listed by Mendel Fellig · COMPASS
Typesingle_family
Built2026
Price / sqft$1621
Est. value (own analysis)$17,376,828
Rent estimate (own analysis)$75,000/mo
HOANone
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Statusfor_sale
Listed date2026-06-18
Removed date—
MLSMiamiMLS #A12037891
Coordinates25.81828, -80.13556
Address4430 Nautilus Dr
CityMiami Beach
StateFL
Zip33140
Listing ID6397225623
Sourceus-real-estate-listings, cached 2026-08-31
ZIP market snapshot (33140)
Typical home value (ZHVI)$684,558
Typical rent (ZORI)$3,694/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)
| Acquisition (one-time, not monthly/yearly) | |
| Purchase price | $7,295,000 |
| Down payment (20.0%) | $1,459,000 |
| Loan amount | $5,836,000 |
| Closing costs (5.0%) | $364,750 |
| Total cash to close | $1,823,750 |
| Income | |
| Rent (comp-derived) | $75,000$900,000 |
| Vacancy loss (8.0%) | |
| Effective gross income | $69,000$828,000 |
| Operating expenses | |
| Property tax (placeholder 1.9% of price) | $11,550$138,605 |
| Insurance (placeholder 0.8% of price) | $4,863$58,360 |
| HOA dues | $0$0 |
| Management (0.0% of EGI) | $0$0 |
| Maintenance (5.0% of GSR) | $3,750$45,000 |
| Total operating expenses | $20,164$241,965 |
| Net operating income (NOI) | |
| Debt service & reserves | |
| Debt service (6.66%, avg 30yr rate as of 2026-08-27, 30yr amortizing) | |
| CapEx reserve (5.0% of GSR) | $3,750$45,000 |
| Mortgage insurance (PMI) (0.0% of loan, not required — down payment ≥ 20%) | $0$0 |
| Cash flow |
Cap rate
Cash-on-cash
DSCR
Rent-to-price (1% rule)
Gross rent multiplier
Operating expense ratio
Break-even occupancy
Comparables
Widened to city-wide. Real active rental listings, used to derive the rent estimate above.
| Address | Type | Beds | Baths | Sqft | Asking rent | Listed | Days on market |
|---|---|---|---|---|---|---|---|
| single_family | 7 | 9 | 8,324 | $95,000 | 2026-08-13 | — | |
| single_family | 7 | 9 | 7,356 | $215,000 | 2026-03-11 | — | |
| single_family | 7 | 8 | 8,110 | $145,000 | 2026-02-02 | — | |
| single_family | 7 | 7 | 4,530 | $20,000 | 2026-05-19 | — | |
| single_family | 7 | 7 | 4,822 | $40,000 | 2026-04-10 | — | |
| single_family | 7 | 8 | 6,637 | $55,000 | 2026-06-18 | — |
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.
| Address | Type | Beds | Baths | Living sqft | Sale price | Sale date |
|---|---|---|---|---|---|---|
| 5515 Pine Tree Dr | single_family | 7 | 9 | 6,997 | $23,750,000 | 2026-04-16 |
| 5077 N Bay Rd | single_family | 7 | 7 | 7,034 | $8,750,000 | 2026-02-06 |
| 1821 W 27th St | single_family | 7 | 7 | 6,860 | $34,000,000 | 2025-10-14 |
| 4774 N Bay Rd | single_family | 7 | 6 | 5,983 | $25,407,000 | 2025-10-08 |
| 2288 Sunset Dr | single_family | 7 | 10 | 6,581 | $25,407,000 | 2025-10-03 |
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.
| Address | Type | Beds | Baths | Sqft | Asking price | Days on market |
|---|---|---|---|---|---|---|
| 3100 N Bay Rd | single_family | 7 | 10 | 10,250 | $100,000,000 | — |
| 5812 Alton Rd | single_family | 7 | 7 | 4,822 | $5,250,000 | — |
| 5680 Pine Tree Dr | single_family | 7 | 6 | 4,691 | $3,850,000 | — |
10-year hold projection
IRR15.0%
Equity multiple3.30x
Total return (10yr)$5,154,309
| Year | Property value | NOI | Cash flow | Loan balance | Equity |
|---|---|---|---|---|---|
| 1 | $7,513,850 | $586,035 | $90,990 | $5,772,725 | $1,741,125 |
| 2 | $7,739,266 | $604,826 | $108,656 | $5,705,104 | $2,034,161 |
| 3 | $7,971,443 | $624,211 | $126,888 | $5,632,840 | $2,338,603 |
| 4 | $8,210,587 | $644,208 | $145,704 | $5,555,614 | $2,654,973 |
| 5 | $8,456,904 | $664,837 | $165,121 | $5,473,084 | $2,983,820 |
| 6 | $8,710,612 | $686,118 | $185,160 | $5,384,887 | $3,325,724 |
| 7 | $8,971,930 | $708,070 | $205,839 | $5,290,634 | $3,681,296 |
| 8 | $9,241,088 | $730,715 | $227,180 | $5,189,908 | $4,051,180 |
| 9 | $9,518,320 | $754,075 | $249,202 | $5,082,264 | $4,436,056 |
| 10 | $9,803,870 | $778,171 | $271,928 | $4,967,229 | $4,836,641 |
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.