5309 Alton Rd

Miami Beach, FL 33140 · single_family · For Sale · 74 days on market
Asking price$4,695,000
6 beds 6 baths 6,011 sqft
View on Realtor.com →
Listed by Irina Nefedova · London Foster Realty
Typesingle_family
Built1991
Price / sqft$781
Est. value (own analysis)$10,342,252
Rent estimate (own analysis)$59,500/mo
HOANone
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Neighborhood

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Statusfor_sale
Listed date2026-06-20
Removed date
MLSMiamiMLS #A12040269
Coordinates25.83132, -80.12849
Address5309 Alton Rd
CityMiami Beach
StateFL
Zip33140
Listing ID6372220176
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)

Purchase price$4,695,000
Down payment (20.0%)$939,000
Loan amount$3,756,000
Closing costs (5.0%)$234,750
Total cash to close$1,173,750
Rent (comp-derived)$59,500$714,000
Vacancy loss (8.0%)

Vacancy Loss

Gross Scheduled Rent × Vacancy Rate

Gross scheduled rent (annual) comp$714,000
Vacancy rate (assumption) assumption8.0%

$714,000 × 8.0% = $57,120

Effective gross income$54,740$656,880
Property tax (placeholder 1.9% of price)$7,434$89,205
Insurance (placeholder 0.8% of price)$3,130$37,560
HOA dues$0$0
Management (0.0% of EGI)$0$0
Maintenance (5.0% of GSR)$2,975$35,700
Total operating expenses$13,539$162,465
Net operating income (NOI)

Net Operating Income (NOI)

Effective Gross Income − Total Operating Expenses

Effective gross income derived$656,880
Total operating expenses derived$162,465

$656,880 − $162,465 = $494,415

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$3,756,000
Interest rate (avg 30yr rate) comp6.7%
Term (assumption) assumption30 years

$3,756,000 amortized at 6.7% over 30 years = $24,137/mo

CapEx reserve (5.0% of GSR)$2,975$35,700
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$494,415
Annual debt service derived$289,645
Annual CapEx reserve assumption$35,700
Annual PMI assumption$0

($494,415 − $289,645 − $35,700 − $0) ÷ 12 = $14,089

Cap rate

Cap Rate

NOI ÷ Purchase Price

NOI derived$494,415
Purchase price data$4,695,000

$494,415 ÷ $4,695,000 = 10.5%

Cash-on-cash

Cash-on-Cash Return

Annual Cash Flow ÷ Total Cash Invested

Annual cash flow derived$169,070
Total cash to close derived$1,173,750

$169,070 ÷ $1,173,750 = 14.4%

DSCR

Debt Service Coverage Ratio (DSCR)

NOI ÷ Annual Debt Service

NOI derived$494,415
Annual debt service derived$289,645

$494,415 ÷ $289,645 = 1.71

Rent-to-price (1% rule)

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

(Gross Scheduled Rent ÷ 12) ÷ Purchase Price

Gross scheduled rent (annual) comp$714,000
Purchase price data$4,695,000

($714,000 ÷ 12) ÷ $4,695,000 = 1.3%

Gross rent multiplier

Gross Rent Multiplier (GRM)

Purchase Price ÷ Gross Scheduled Rent

Purchase price data$4,695,000
Gross scheduled rent (annual) comp$714,000

$4,695,000 ÷ $714,000 = 6.6

Operating expense ratio

Operating Expense Ratio

Total Operating Expenses ÷ Effective Gross Income

Total operating expenses derived$162,465
Effective gross income derived$656,880

$162,465 ÷ $656,880 = 24.7%

Break-even occupancy

Break-Even Occupancy

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

Total operating expenses derived$162,465
Annual debt service derived$289,645
Annual PMI assumption$0
Gross scheduled rent (annual) comp$714,000

($162,465 + $289,645 + $0) ÷ $714,000 = 63.3%

Comparables

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

AddressTypeBedsBathsSqftAsking rentListedDays on market
single_family686,296$69,0002026-08-22
single_family673,762$40,0002026-04-19
single_family61010,777$475,0002025-11-10
single_family675,181$50,0002026-04-13

1420 W 21st St

Miami Beach, 33140 · rent comp

Bedrooms / bathrooms6 bd / 8 ba
Square footage6,296
Listed2026-08-22
Days on market

Asking rent: $69,000

View on Zillow →

2143 N Bay Rd

Miami Beach, 33140 · rent comp

Bedrooms / bathrooms6 bd / 7 ba
Square footage3,762
Listed2026-04-19
Days on market

Asking rent: $40,000

View on Zillow →

1510 W 25th St

Miami Beach, 33140 · rent comp

Bedrooms / bathrooms6 bd / 10 ba
Square footage10,777
Listed2025-11-10
Days on market

Asking rent: $475,000

View on Zillow →

2887 Pine Tree Dr

Miami Beach, 33140 · rent comp

Bedrooms / bathrooms6 bd / 7 ba
Square footage5,181
Listed2026-04-13
Days on market

Asking rent: $50,000

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
5215 Pine Tree Drsingle_family654,535$9,550,0002026-09-01
5825 Alton Rdsingle_family653,378$4,700,0002026-05-22
2701 N Bay Rdsingle_family674,389$4,500,0002026-05-21
1745 W 24th Stsingle_family696,231$34,000,0002026-05-15
2300 Sunset Drsingle_family685,343$13,000,0002026-05-15
3500 Flamingo Drsingle_family686,132$8,600,0002026-05-14
4510 Prairie Avesingle_family675,633$11,500,0002026-05-07
2024 Alton Rdsingle_family633,032$1,900,0002026-03-27
4539 Pine Tree Drsingle_family645,818$15,600,0002026-03-27
4340 N Bay Rdsingle_family688,748$25,000,0002026-03-16
1818 W 23rd Stsingle_family676,316$26,000,0002026-01-15
5905 N Bay Rdsingle_family645,700$5,000,0002025-12-31
4425 Adams Avesingle_family675,331$7,175,0002025-12-17
2456 Prairie Avesingle_family664,330$7,450,0002025-11-24
800 W 47th Stsingle_family692,791$2,885,0002025-11-10
3605 Flamingo Drsingle_family645,266$11,000,0002025-11-05
2424 Prairie Avesingle_family653,785$2,830,0002025-10-20

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
2520 Shelter Avesingle_family675,768$19,750,000
528 Lakeview Ctsingle_family675,406$14,800,000
4442 Prairie Avesingle_family675,000$11,995,000
6015 N Bay Rdsingle_family684,590$9,700,000
3310 Garden Avesingle_family675,168$6,300,000
2887 Pine Tree Drsingle_family675,181$6,799,000
2499 N Meridian Avesingle_family675,151$12,450,000
5005 Lakeview Drsingle_family655,775$28,800,000

10-year hold projection

IRR22.8%
Equity multiple4.39x
Total return (10yr)$4,587,647
YearProperty valueNOICash flowLoan balanceEquity
1$4,835,850$494,415$169,070$3,715,277$1,120,573
2$4,980,926$510,060$183,822$3,671,757$1,309,169
3$5,130,353$526,194$199,042$3,625,248$1,505,105
4$5,284,264$542,833$214,744$3,575,546$1,708,718
5$5,442,792$559,993$230,942$3,522,431$1,920,361
6$5,606,076$577,690$247,654$3,465,668$2,140,408
7$5,774,258$595,939$264,894$3,405,007$2,369,251
8$5,947,486$614,760$282,679$3,340,180$2,607,305
9$6,125,910$634,168$301,026$3,270,902$2,855,008
10$6,309,687$654,183$319,954$3,196,867$3,112,821
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.