Key Biscayne New Construction for Sale

4 listings
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Looking at Key Biscayne New Construction?

Tell us what you're after — we'll send matching homes, off-market options and recent sales, and set up private showings.

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. Florida Lux Real Estate currently tracks 4 active listings here. MLS inventory updated October 11, 2026.

New Construction 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.

New construction in Key Biscayne means current building code, impact-rated glass, a fresh roof the insurers reward, and warranties in place of surprises. Known for a family island village between two state parks, fifteen minutes from Brickell, Key Biscayne only adds new supply where land and approvals allow — so the premium on a new build is really a discount on insurance and certainty, spread across years of ownership.

Key Biscayne Market Snapshot

227
Homes sold, last 12 months
$1.6M
Median sale price
61 days
Median time on market

Frequently Asked Questions

Why does new construction in Key Biscayne insure so much better?

Newer Florida code — and recent construction especially — brings impact protection, stronger roof-to-wall connections and higher elevations, and insurers price directly to that. The gap against an older home with an aging roof can be dramatic. We obtain quotes during diligence so you're comparing true carrying costs.

Should I bring my own agent to a Key Biscayne developer's sales center?

Yes. The on-site team represents the developer, not you. Your own representation costs you nothing and earns its keep on contract terms, deposit structure, delivery timelines and the final walkthrough. We've negotiated developer contracts throughout this market.

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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