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Miami Investment Property Analysis: How to Run the Numbers in 10 Minutes (2026)

2026-04-29 · 9 min read

The 5 Numbers That Make or Break a Miami Deal

Most investors who lose money in Miami real estate didn't fail because the market was bad. They failed because they skipped the math. Here are the five metrics that determine whether a property is an investment or an expense:

1.
Monthly Cash Flow — Rent minus ALL expenses including mortgage, taxes, insurance, maintenance, and vacancy. This is the number. Everything else is context.
2.
Cap Rate — NOI ÷ Purchase Price × 100. Measures return independent of financing. In Miami, 5-7% is solid; below 4% is an appreciation-only play.
3.
Cash-on-Cash Return — Annual cash flow ÷ cash invested. Shows how hard your down payment is working.
4.
Gross Rent Multiplier — Price ÷ Annual Gross Rent. Quick filter: anything above 20 in Miami deserves close scrutiny.
5.
Rent-to-Price Ratio — Monthly rent ÷ purchase price. The 1% rule is nearly impossible in Miami — 0.5-0.7% is realistic for deals that still pencil out.

Know Your All-In Monthly Expenses

This is where most rookie investors blow the analysis. They calculate mortgage + taxes and call it a day. Here's the full picture for a Miami investment property:

Example: $380,000 3bd/2ba in Hialeah (25% down, 7.25% rate)
Mortgage (P&I)$1,946/mo
Property Tax (Miami-Dade ~1.1%)$348/mo
Insurance (FL crisis pricing)$280/mo
Maintenance reserve (1%/yr)$317/mo
Property management (8-10%)$180/mo
Total Monthly Expenses$3,071/mo

Miami-specific warning: FL insurance averages $2,500–$4,000/year for a $380K property. Coastal zones can be double. Always call three agents for quotes — don't use Zillow's estimate. Miami-Dade property taxes reset to non-homestead rate at purchase; never use the seller's tax bill if they had homestead exemption.

2026 Rent Ranges by Miami Neighborhood

Area 2bd/1ba 3bd/2ba Duplex/unit
Hialeah $1,700–$1,950 $2,100–$2,400 $1,600–$1,900
Homestead $1,600–$1,850 $1,900–$2,200 $1,400–$1,700
Little Havana $1,800–$2,100 $2,200–$2,600 $1,700–$2,000
Opa-locka $1,500–$1,750 $1,850–$2,150 $1,400–$1,650
Kendall $2,000–$2,300 $2,400–$2,800 $1,900–$2,200
Brickell/Edgewater $2,800–$3,500 $3,500–$4,500 Poor CoC

Source: Active Zillow/Apartments.com listings April 2026. Use the 50th percentile for conservative underwriting, not the top of the range.

Cash Flow Examples: F-Grade vs A-Grade Miami Deal

Back to the Hialeah example. A 3bd/2ba at $380,000 renting at the median ($2,250/month):

SFH @ $380K F
Rent+$2,250
Expenses−$3,071
Cash Flow−$821/mo
Duplex @ $420K B
Rent (2 units)+$3,600
Expenses−$3,495
Cash Flow+$105/mo

Same Hialeah neighborhood, very different outcome. An A-grade deal looks like: the same duplex but distressed — priced at $340,000. Same rents, cash flow jumps to $580+/month, cap rate hits 6.1%. That is the deal SpillDeals surfaces and grades A automatically.

SpillDeals Grade Rubric

A$500+/mo cash flow & 7%+ cap rate — Rare. Buy immediately.
B$200–$499/mo & 5.5–7% cap rate — Strong deal. Move fast.
C$0–$199/mo — Breakeven, mostly appreciation play.
FNegative cash flow — Do not buy without an airtight appreciation thesis.

Miami Markets That Actually Cash Flow in 2026

Not all of Miami-Dade produces investable returns. Here's the honest breakdown:

Best cash flow submarkets

Hialeah — High density of duplexes, strongest price-to-rent ratio in the county. Homestead — Lower prices, growing fast, FHA house hacks work well. Opa-locka — Highest cap rates in Miami-Dade; higher risk tolerance required. West Little Havana — Emerging, still affordable small multifamily.

Appreciation plays — not cash flow

Brickell / Edgewater / Wynwood — Terrible price-to-rent ratios. Buy for appreciation only. Miami Beach / Coconut Grove — Beautiful, expensive, doesn't pencil for rental income. Coral Gables — High-quality rentals, but prices make positive cash flow nearly impossible.

Every morning, SpillDeals analyzes every active FL listing and grades each one A through F using this exact math — real insurance estimates, non-homestead tax rates, and HUD Fair Market Rents. Filter for A/B in Miami and you'll see the 8% that actually cash flow, without building a single spreadsheet.

Alejandro Gonzalez is a Florida real estate investor and founder of SpillDeals — the only platform that grades every FL investment property A–F using live MLS data. Learn more →

Run any FL deal free at spilldeals.com →

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Alejandro Gonzalez is a Florida real estate investor and founder of SpillDeals — the only platform that grades every FL investment property A–F using live MLS data. Learn more →

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