1644 SW 9th St

Miami, FL 33135 · single_family · For Sale · 19 days on market
Asking price$1,395,000
6 beds 4 baths 2,078 sqft
Suggested offer$971,633$423,367 above the est. market value of $971,633.
View on Realtor.com →
Listed by Mario Kroeff · Douglas Elliman
Typesingle_family
Built1925
Price / sqft$671
Est. value (own analysis)$971,633
Rent estimate (own analysis)$25,000/mo
HOANone
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Neighborhood

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Statusfor_sale
Listed date2026-08-14
Removed date
MLSMiamiMLS #A12061110
Coordinates25.76463, -80.22143
Address1644 SW 9th St
CityMiami
StateFL
Zip33135
Listing ID5024913068
Sourceus-real-estate-listings, cached 2026-08-30

ZIP market snapshot (33135)

Typical home value (ZHVI)$531,790
Typical rent (ZORI)$2,051/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$1,395,000
Down payment (20.0%)$279,000
Loan amount$1,116,000
Closing costs (5.0%)$69,750
Total cash to close$348,750
Rent (comp-derived)$25,000$300,000
Vacancy loss (8.0%)

Vacancy Loss

Gross Scheduled Rent × Vacancy Rate

Gross scheduled rent (annual) comp$300,000
Vacancy rate (assumption) assumption8.0%

$300,000 × 8.0% = $24,000

Effective gross income$23,000$276,000
Property tax (placeholder 1.9% of price)$2,209$26,505
Insurance (placeholder 0.8% of price)$930$11,160
HOA dues$0$0
Management (0.0% of EGI)$0$0
Maintenance (5.0% of GSR)$1,250$15,000
Total operating expenses$4,389$52,665
Net operating income (NOI)

Net Operating Income (NOI)

Effective Gross Income − Total Operating Expenses

Effective gross income derived$276,000
Total operating expenses derived$52,665

$276,000 − $52,665 = $223,335

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$1,116,000
Interest rate (avg 30yr rate) comp6.7%
Term (assumption) assumption30 years

$1,116,000 amortized at 6.7% over 30 years = $7,172/mo

CapEx reserve (5.0% of GSR)$1,250$15,000
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$223,335
Annual debt service derived$86,061
Annual CapEx reserve assumption$15,000
Annual PMI assumption$0

($223,335 − $86,061 − $15,000 − $0) ÷ 12 = $10,190

Cap rate

Cap Rate

NOI ÷ Purchase Price

NOI derived$223,335
Purchase price data$1,395,000

$223,335 ÷ $1,395,000 = 16.0%

Cash-on-cash

Cash-on-Cash Return

Annual Cash Flow ÷ Total Cash Invested

Annual cash flow derived$122,274
Total cash to close derived$348,750

$122,274 ÷ $348,750 = 35.1%

DSCR

Debt Service Coverage Ratio (DSCR)

NOI ÷ Annual Debt Service

NOI derived$223,335
Annual debt service derived$86,061

$223,335 ÷ $86,061 = 2.60

Rent-to-price (1% rule)

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

(Gross Scheduled Rent ÷ 12) ÷ Purchase Price

Gross scheduled rent (annual) comp$300,000
Purchase price data$1,395,000

($300,000 ÷ 12) ÷ $1,395,000 = 1.8%

Gross rent multiplier

Gross Rent Multiplier (GRM)

Purchase Price ÷ Gross Scheduled Rent

Purchase price data$1,395,000
Gross scheduled rent (annual) comp$300,000

$1,395,000 ÷ $300,000 = 4.7

Operating expense ratio

Operating Expense Ratio

Total Operating Expenses ÷ Effective Gross Income

Total operating expenses derived$52,665
Effective gross income derived$276,000

$52,665 ÷ $276,000 = 19.1%

Break-even occupancy

Break-Even Occupancy

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

Total operating expenses derived$52,665
Annual debt service derived$86,061
Annual PMI assumption$0
Gross scheduled rent (annual) comp$300,000

($52,665 + $86,061 + $0) ÷ $300,000 = 46.2%

Comparables

Widened to city-wide. Real active rental listings, used to derive the rent estimate above.

AddressTypeBedsBathsSqftAsking rentListedDays on market
single_family643,500$17,0002026-08-13
single_family642,763$6,5002026-08-18
single_family643,218$7,9002026-07-24
single_family675,850$25,0002026-07-21
single_family675,712$65,0002026-07-01
single_family631,854$5,3002026-08-26
single_family665,322$28,0002026-06-17
single_family654,432$29,5002026-06-17
single_family664,181$18,0002026-08-03
single_family685,568$58,5002026-04-15
single_family653,446$30,0002023-02-13
single_family646,112$30,000
single_family643,078$3,5002026-08-28

1230 NE 89th St

Miami, 33138 · rent comp

Bedrooms / bathrooms6 bd / 4 ba
Square footage3,500
Listed2026-08-13
Days on market

Asking rent: $17,000

View on Zillow →

1435 SW 82nd Pl

Miami, 33144 · rent comp

Bedrooms / bathrooms6 bd / 4 ba
Square footage2,763
Listed2026-08-18
Days on market

Asking rent: $6,500

View on Zillow →

6610 SW 104th Ct

Miami, 33173 · rent comp

Bedrooms / bathrooms6 bd / 4 ba
Square footage3,218
Listed2026-07-24
Days on market

Asking rent: $7,900

View on Zillow →

10005 SW 66th St

Miami, 33173 · rent comp

Bedrooms / bathrooms6 bd / 7 ba
Square footage5,850
Listed2026-07-21
Days on market

Asking rent: $25,000

View on Zillow →

980 Belle Meade Island Dr

Miami, 33138 · rent comp

Bedrooms / bathrooms6 bd / 7 ba
Square footage5,712
Listed2026-07-01
Days on market

Asking rent: $65,000

View on Zillow →

7537 NW 3rd Ave

Miami, 33150 · rent comp

Bedrooms / bathrooms6 bd / 3 ba
Square footage1,854
Listed2026-08-26
Days on market

Asking rent: $5,300

View on Zillow →

6220 SW 86th St

Miami, 33143 · rent comp

Bedrooms / bathrooms6 bd / 6 ba
Square footage5,322
Listed2026-06-17
Days on market

Asking rent: $28,000

View on Zillow →

1076 NE Little River Dr

Miami, 33138 · rent comp

Bedrooms / bathrooms6 bd / 5 ba
Square footage4,432
Listed2026-06-17
Days on market

Asking rent: $29,500

View on Zillow →

6200 SW 97th Ave

Miami, 33173 · rent comp

Bedrooms / bathrooms6 bd / 6 ba
Square footage4,181
Listed2026-08-03
Days on market

Asking rent: $18,000

View on Zillow →

707 NE 77th St

Miami, 33138 · rent comp

Bedrooms / bathrooms6 bd / 8 ba
Square footage5,568
Listed2026-04-15
Days on market

Asking rent: $58,500

View on Zillow →

9101 N Bayshore Dr

Miami, 33138 · rent comp

Bedrooms / bathrooms6 bd / 5 ba
Square footage3,446
Listed2023-02-13
Days on market

Asking rent: $30,000

View on Zillow →

10506 SW 89th Pl

Miami, 33176 · rent comp

Bedrooms / bathrooms6 bd / 4 ba
Square footage6,112
Listed
Days on market

Asking rent: $30,000

View on Zillow →

8880 SW 25th St Unit 8880

Miami, 33165 · rent comp

Bedrooms / bathrooms6 bd / 4 ba
Square footage3,078
Listed2026-08-28
Days on market

Asking rent: $3,500

View on Zillow →

Widened to any bedroom count in ZIP. 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
1121 SW 36th Avesingle_family431,386$600,0002026-08-31
3260 SW 2nd Stsingle_family321,554$590,0002026-08-20
2257 SW 11th Stsingle_family321,500$695,0002026-08-14
329 SW 15th Avesingle_family31804$500,0002026-08-13
3630 SW 3rd Stsingle_family321,179$630,0002026-08-03
2311 SW 2nd Stsingle_family421,976$750,0002026-07-30
3087 SW 5th Stsingle_family21996$525,0002026-07-28
2217 SW 11th Stsingle_family211,645$500,0002026-07-24
1737 SW 10th Stsingle_family321,828$1,385,0002026-07-22
3201 SW 3rd Stsingle_family321,872$590,0002026-07-15
1837 SW 11th Tersingle_family432,428$971,0002026-07-13
1601 SW 11th Tersingle_family321,992$1,425,0002026-07-08
3135 SW 7th Stsingle_family321,387$772,5002026-07-08
3631 SW 6th Stsingle_family321,808$550,0002026-06-30
3680 SW 9th Tersingle_family211,329$585,0002026-06-30
3625 SW 6th Stsingle_family321,282$550,0002026-06-25
1045 SW 20th Avesingle_family211,871$630,0002026-06-11
2006 SW 12th Stsingle_family432,460$1,250,0002026-06-03
2533 SW 5th Stsingle_family311,472$799,0002026-06-01
3075 SW 4th Stsingle_family211,017$310,0002026-05-28
1632 SW 12th Stsingle_family321,412$870,0002026-05-27
1746 SW 9th Stsingle_family311,595$550,0002026-05-26
1800 SW 3rd St Apt Dsingle_family21802$375,0002026-05-22
75 SW 32nd Court Rdsingle_family321,437$690,0002026-05-22
3194 SW 6th Stsingle_family221,481$573,0002026-05-21
927 SW 18th Avesingle_family321,934$1,000,0002026-05-20
1700 SW 11th Tersingle_family321,040$2,795,0002026-05-19
641 SW 35th Avesingle_family321,256$650,0002026-05-18
1755 SW 10th Stsingle_family343,630$1,897,8002026-05-13
2228 SW 2nd Stsingle_family321,397$500,0002026-05-11
1769 SW 9th Stsingle_family211,762$655,0002026-04-27
1720 SW 12th Stsingle_family431,949$1,050,0002026-04-15
960 SW 13th Ctsingle_family532,068$685,0002026-04-15
2363 SW 11th Tersingle_family421,426$840,0002026-04-13
2357 SW 11th Tersingle_family321,428$884,5002026-04-10
1200 SW 23rd Ctsingle_family442,673$1,740,0002026-04-10
248 SW 18th Ctsingle_family211,318$570,0002026-03-27
901 SW 19th Avesingle_family532,646$735,0002026-03-19
88 SW 29th Avesingle_family321,125$645,0002026-03-13
3026 SW 4th Stsingle_family211,218$565,0002026-03-13
300 SW 31st Ctsingle_family311,230$475,0002026-03-09
2290 SW 2nd Tersingle_family32$650,0002026-03-05
1776 SW 11th Tersingle_family321,870$945,0002026-02-27
1922 SW 3rd Stsingle_family211,124$480,0002026-02-23
1729 SW 12th Stsingle_family322,050$1,160,0002026-02-10
2271 SW 11th Stsingle_family211,103$625,0002026-02-02
2220 SW 12th Stsingle_family431,820$670,0002026-01-30
1785 SW 10th Stsingle_family431,965$925,0002026-01-29
125 SW 32nd Court Rdsingle_family211,100$540,0002026-01-28
420 SW 13th Avesingle_family311,040$400,0002026-01-09

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
244 SW 36th Avemulti_family631,847$639,000
2247 SW 9th Stmulti_family642,100$1,379,000
1801 SW 10th Stsingle_family633,994$1,475,000
620 SW 13th Avemulti_family641,980$1,500,000
244 SW 14th Avemulti_family631,938$1,150,000
2204 SW 11th Tersingle_family653,668$1,550,000
3438 SW 2nd Stmulti_family643,095$1,100,000
2818 SW 2nd Stmulti_family642,262$899,000

10-year hold projection

IRR41.1%
Equity multiple6.76x
Total return (10yr)$2,191,244
YearProperty valueNOICash flowLoan balanceEquity
1$1,436,850$223,335$122,274$1,103,900$332,950
2$1,479,956$230,298$128,863$1,090,969$388,986
3$1,524,354$237,477$135,657$1,077,150$447,204
4$1,570,085$244,878$142,664$1,062,382$507,702
5$1,617,187$252,508$149,890$1,046,601$570,587
6$1,665,703$260,374$157,342$1,029,735$635,968
7$1,715,674$268,483$165,027$1,011,711$703,963
8$1,767,144$276,843$172,952$992,449$774,695
9$1,820,159$285,461$181,125$971,865$848,294
10$1,874,763$294,346$189,552$949,867$924,896
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.