Key Biscayne Multi-Family Homes for Sale

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Matthew Gromadzki, Real Estate Broker
Matthew Gromadzki
Real Estate Broker
(786) 370-8570
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Live MLS inventory in Key Biscayne, updated continuously.

Multi-Family Homes for Sale in Key Biscayne: What to Know Before You Search

Beyond the Rickenbacker tollgate, tucked between two state parks, Key Biscayne functions as Miami's island village — a K-8 school and streets where children pedal to the beach. Ordinance limits the condo count and no new building has opened since 2014, which means the scarcity driving prices here is entirely real.

Multi-family property in Key Biscayne is where owner-occupants and investors overlap — duplexes up to small apartment buildings where rental income helps cover the mortgage. A market known for a family island village between two state parks, fifteen minutes from Brickell keeps tenant demand steady, and for many buyers the smartest opening move here is living in one unit while the others carry the loan.

Key Biscayne Market Snapshot

223
Homes sold, last 12 months
$1.6M
Median sale price
61 days
Median time on market

Frequently Asked Questions

Can I house-hack a duplex in Key Biscayne?

Yes. Owner-occupied multi-family qualifies for residential financing — some programs allow a low single-digit down payment — and lenders will credit part of the other units' rent toward your qualification. It's the classic first-investment route, and we'll model the numbers on any listing on this page.

What should I verify before buying a rental building in Key Biscayne?

Actual rents against market, which leases convey at closing, insurance on any older roof, and whether the municipality requires a rental license. Pulling the rent roll and confirming licensing is part of our standard diligence, not an afterthought.

How do I arrange a showing in Key Biscayne?

Each listing on this page carries an inquiry form that goes straight to our brokerage — or reach us at +1 786-370-8570. We schedule private tours to fit your calendar and run live video walkthroughs for buyers relocating from out of state, with no obligation attached.

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