9280 Byron Ave

Surfside, FL 33154 · single_family · For Sale · 118 days on market
Asking price$4,999,000
6 beds 6 baths 4,077 sqft
View on Realtor.com →
Listed by Shneur Shapiro · The Brokerage South Florida Real Estate, LLC.
Typesingle_family
Built2025
Price / sqft$1226
Est. value (own analysis)$8,150,981
Rent estimate (Zillow ZIP avg)$4,738/mo
HOANone
Show every detail
Statusfor_sale
Listed date2026-05-07
Removed date
MLSMiamiMLS #A12014317
Coordinates
Address9280 Byron Ave
CitySurfside
StateFL
Zip33154
Listing ID9583825837
Sourceus-real-estate-listings, cached 2026-08-31

ZIP market snapshot (33154)

Typical home value (ZHVI)$1,230,561
Typical rent (ZORI)$4,738/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$4,999,000
Down payment (20.0%)$999,800
Loan amount$3,999,200
Closing costs (5.0%)$249,950
Total cash to close$1,249,750
Rent (ZIP avg, ZORI — not bedroom-specific)$4,738$56,861
Vacancy loss (8.0%)

Vacancy Loss

Gross Scheduled Rent × Vacancy Rate

Gross scheduled rent (annual) comp$56,861
Vacancy rate (assumption) assumption8.0%

$56,861 × 8.0% = $4,549

Effective gross income$4,359$52,312
Property tax (placeholder 1.9% of price)$7,915$94,981
Insurance (placeholder 0.8% of price)$3,333$39,992
HOA dues$0$0
Management (0.0% of EGI)$0$0
Maintenance (5.0% of GSR)$237$2,843
Total operating expenses$11,485$137,816
Net operating income (NOI)

Net Operating Income (NOI)

Effective Gross Income − Total Operating Expenses

Effective gross income derived$52,312
Total operating expenses derived$137,816

$52,312 − $137,816 = -$85,504

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$3,999,200
Interest rate (avg 30yr rate) comp6.7%
Term (assumption) assumption30 years

$3,999,200 amortized at 6.7% over 30 years = $25,700/mo

CapEx reserve (5.0% of GSR)$237$2,843
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-$85,504
Annual debt service derived$308,399
Annual CapEx reserve assumption$2,843
Annual PMI assumption$0

(-$85,504 − $308,399 − $2,843 − $0) ÷ 12 = -$33,062

Cap rate

Cap Rate

NOI ÷ Purchase Price

NOI derived-$85,504
Purchase price data$4,999,000

-$85,504 ÷ $4,999,000 = -1.7%

Cash-on-cash

Cash-on-Cash Return

Annual Cash Flow ÷ Total Cash Invested

Annual cash flow derived-$396,747
Total cash to close derived$1,249,750

-$396,747 ÷ $1,249,750 = -31.7%

DSCR

Debt Service Coverage Ratio (DSCR)

NOI ÷ Annual Debt Service

NOI derived-$85,504
Annual debt service derived$308,399

-$85,504 ÷ $308,399 = -0.28

Rent-to-price (1% rule)

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

(Gross Scheduled Rent ÷ 12) ÷ Purchase Price

Gross scheduled rent (annual) comp$56,861
Purchase price data$4,999,000

($56,861 ÷ 12) ÷ $4,999,000 = 0.1%

Gross rent multiplier

Gross Rent Multiplier (GRM)

Purchase Price ÷ Gross Scheduled Rent

Purchase price data$4,999,000
Gross scheduled rent (annual) comp$56,861

$4,999,000 ÷ $56,861 = 87.9

Operating expense ratio

Operating Expense Ratio

Total Operating Expenses ÷ Effective Gross Income

Total operating expenses derived$137,816
Effective gross income derived$52,312

$137,816 ÷ $52,312 = 263.5%

Break-even occupancy

Break-Even Occupancy

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

Total operating expenses derived$137,816
Annual debt service derived$308,399
Annual PMI assumption$0
Gross scheduled rent (annual) comp$56,861

($137,816 + $308,399 + $0) ÷ $56,861 = 784.8%

Comparables

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

No active rental listings cached yet for this bedroom count.

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
9045 Hawthorne Avesingle_family676,222$8,750,0002026-06-26
8900 Bay Drsingle_family655,485$14,300,0002026-04-14
9264 Dickens Avesingle_family643,692$4,350,0002026-03-25
217 Bal Cross Drsingle_family675,402$10,800,0002026-03-05
10241 E Broadview Drsingle_family665,888$12,800,0002025-10-24

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
1360 98th Stsingle_family673,724$6,499,000
10203 Collins Ave Unit 2801condos688,993$69,500,000
919 92nd Stsingle_family67$16,150,000
9424 9432 Carlyle Avesingle_family64$4,250,000
1251 99th Stsingle_family675,538$7,490,000
9705 Collins Ave Units 1701N & 1702Ncondos68$20,000,000
96 Bal Cross Drsingle_family68$7,800,000
9407 E Broadview Drsingle_family686,906$24,700,000

10-year hold projection

IRR-11.2%
Equity multiple-0.92x
Total return (10yr)-$1,745,579
YearProperty valueNOICash flowLoan balanceEquity
1$5,148,970-$85,504-$396,747$3,955,840$1,193,130
2$5,303,439-$87,380-$398,694$3,909,502$1,393,937
3$5,462,542-$89,295-$400,682$3,859,982$1,602,560
4$5,626,419-$91,250-$402,711$3,807,061$1,819,357
5$5,795,211-$93,246-$404,783$3,750,507$2,044,704
6$5,969,067-$95,283-$406,898$3,690,069$2,278,999
7$6,148,139-$97,361-$409,058$3,625,480$2,522,660
8$6,332,584-$99,483-$411,262$3,556,456$2,776,128
9$6,522,561-$101,649-$413,512$3,482,692$3,039,869
10$6,718,238-$103,858-$415,808$3,403,863$3,314,375
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.