400 Alton Rd

Miami Beach, FL 33139

$3,650,000

$2,213/ft²

2Beds

2Baths

1,649Sq ft

2003Year built

CondoType

About this home

Completely reimagined penthouse at the iconic Murano Grande — like nothing you’ve ever seen before! Featuring over $500,000 in renovations with all assessments paid, this contemporary masterpiece is stunning and unlike any other residence in the building. Never before offered on the market, this is a rare opportunity for the buyer seeking something truly impossible to find. Designed for those who want what no one else has, this one-of-one penthouse delivers the ultimate South of Fifth lifestyle. Extensive custom renovations include premium designer finishes, upgraded infrastructure, imported Calacatta Macchia Vecchia stone surfaces, and major structural modifications, including a fully opened kitchen concept designed for entertaining. The state-of-the-art marble kitchen features integrated Sub-Zero appliances and a built-in wine chiller which anchors expansive living spaces highlighted by floor-to-ceiling glass and oversized balconies overlooking the water. Dramatic 11-foot ceilings create a loft-like atmosphere filled with natural light. The residence also features the line’s largest primary balcony, offering expansive outdoor living and entertaining space. Wide-plank white oak engineered flooring runs throughout, and the home is fully pre-wired for a whole-home AV and entertainment system. Enjoy panoramic bay and ocean views from every room. Just steps from the beach, shopping, and dining. Hard to find, impossible to duplicate, and unforgettable in every way.

Features

Waterfront

Property details

Listing

MLS #: A12021384
Status: For sale
Listed on: May 24, 2026
Days on market: 77 days
Listing data updated: Jul 22, 2026

Interior

Beds: 2
Baths: 2
Living area: 1,649 ft²
Price per ft²: $2,213/ft²
Unit: PH11

Building & community

Type: Condo
Year built: 2003
HOA fee: $2,833/mo
County: Miami-Dade

Lot & exterior

Waterfront: Yes

Days on market, price per ft² and the monthly HOA amount are calculated by this site from the MLS data shown; the association fee is normalized to a monthly figure.

True monthly cost

Mortgage (principal & interest): $18,456
Property taxes (est.): $3,346
Home insurance (est.): $600
Flood insurance (est.): —
HOA fee: $2,833

Estimated total$25,235*/mo

* Some cost lines aren't available yet for this listing; the total shown is incomplete.

Based on 20% down, a 6.5% rate and a 30-year loan, plus this home's estimated Florida carrying costs. All figures are illustrative estimates — not quotes, not financial or insurance advice.

Sources: flood zone — FEMA National Flood Hazard Layer; mortgage, taxes and insurance figures — this site's own estimates; HOA / CDD — as reported for this listing.

What will this home really cost you?

Building structural health (SIRS)

No filing record found

We couldn't find a SIRS filing record for this building in Florida's public DBPR database. That is not a red flag by itself: buildings under three stories are exempt, recent or mailed-in filings may not appear yet, and the name or address on file may differ from this listing.

Questions about this

What is a SIRS and why does it matter?

Since the Surfside collapse, Florida requires condo and co-op buildings three stories or taller to complete a Structural Integrity Reserve Study: an inspection-based plan that forces the association to fund structural repairs (roof, load-bearing walls, plumbing, electrical) instead of deferring them. It matters because underfunded buildings are the ones that surprise owners with large special assessments.

Has this building filed its SIRS?

We didn't find a filing record for this building in the DBPR's public database. Absence of a record does not mean the building is out of compliance — it may be exempt (under three stories), the filing may be recent or on paper, or the recorded name/address may differ. It IS the right question to ask before offering.

What is a special assessment?

A one-off charge the association levies on every owner when reserves don't cover a needed repair — in older coastal buildings they have ranged from a few thousand to over $100,000 per unit. The SIRS exists precisely to make these predictable and funded in advance. Always review the building's budget, reserves and meeting minutes before buying.

What should I check before buying in this building?

Florida law gives buyers the right to review the association's SIRS, milestone inspection reports, budget and reserves — the full study is available from the association by written request. Nilyan requests and walks through these documents with her buyers as part of the offer process.

Source: Florida DBPR public SIRS reporting database. Filing status is self-reported by the association; this is not an audit, inspection or safety certification, and absence of a record does not mean non-compliance. Data as of July 30, 2026.

Want the full structural picture of this building before you offer?