400 Alton Rd · Miami Beach, FL 33139 · South Beach

Murano Grande at Portofino

38-story tower, completed 2003, 265 residences in South Beach. 11 for sale and 5 for rent on Nov 2, 2026.

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At a glance Murano Grande at Portofino (400 Alton Rd, South Beach) is a 38-story, 265-unit building completed in 2003. As of Nov 2, 2026, 11 units are for sale and 5 are for rent; the median closed price was $1,278 per square foot over 10 sales in the last 12 months. FEMA flood zone AE. Source: Miami Assoc. of REALTORS® MLS via Bridge IDX, Miami-Dade Property Appraiser records and the FEMA flood map.

6 photos from my condo archive

For sale
11
For rent
5
Median $/SF
$1,27810 sales · 12 mo
Sold
10last 12 months
Built
2003
Floors
38
Residences
265county
Flood zone
AEFEMA
Owner-occupied
50%
Avg. unit
2,084sq ft

MLS via Bridge IDX · as of Nov 2, 2026 · How these numbers are made

On the market at Murano Grande at Portofino.

The weekly MLS snapshot, newest asks first. Each unit opens its full listing: photos, taxes, history. Or check the live feed for today's inventory.

Snapshot as of Nov 2, 2026.

For sale 11 listings · Nov 2, 2026

Unit 2101$8,750,000$2,199/SF4 bd · 5.5 ba · 3,979 sf1 day listed · $18,270/mo HOA · listed by Compass Florida, LLCFull listing →Unit 2703$6,299,000$2,060/SF3 bd · 3 ba · 3,058 sf3 days listed · $14,771/mo HOA · listed by Blackstone Intern'l Realty LLCFull listing →Unit PH11$3,650,000$2,213/SF2 bd · 2 ba · 1,649 sf115 days listed · $8,500/mo HOA · listed by Keller Williams Capital RealtyFull listing →Unit 1106$3,350,000$1,655/SF3 bd · 3 ba · 2,024 sf45 days listed · $3,136/mo HOA · listed by One Sotheby's International RealtyFull listing →Unit 1404$2,600,000$1,825/SF2 bd · 2.5 ba · 1,425 sf1 day listed · listed by One Sotheby's International RealtyFull listing →Unit 1804$2,600,000$1,825/SF2 bd · 2.5 ba · 1,425 sf49 days listed · $2,230/mo HOA · listed by Gary Hennes RealtorsFull listing →Unit 901$2,500,000$1,248/SF2 bd · 2.5 ba · 2,003 sf5 days listed · $3,018/mo HOA · listed by Realty Mark AssociatesFull listing →Unit 1704$2,495,000$1,751/SF2 bd · 2.5 ba · 1,425 sf6 days listed · $2,230/mo HOA · listed by United Realty Group IncFull listing →Unit 811$2,400,000$1,455/SF2 bd · 2 ba · 1,649 sf24 days listed · $5,000/mo HOA · listed by One Sotheby's International RealtyFull listing →Unit TH-1A$1,750,000$939/SF2 bd · 3 ba · 1,864 sf173 days listed · $2,333/mo HOA · listed by One Sotheby's International RealtyFull listing →Unit 610$1,695,000$1,095/SF2 bd · 2.5 ba · 1,548 sf14 days listed · $7,249/mo HOA · listed by One Sotheby's International RealtyFull listing →

Under contract 6

  • Unit 1709$1,575,000 · 2 bd
  • Unit 1506$22,995/mo · 3 bd
  • Unit 706$16,500/mo · 3 bd
  • Unit 1106$16,000/mo · 3 bd
  • Unit 1505$11,000/mo · 2 bd
  • Unit 907$9,200/mo · 2 bd

Listings matched to this building's recorded addresses. I don't have to be the listing agent to show you any unit or to negotiate for you. Search condos in 33139

Murano Grande at Portofino, floor by floor.

Every unit the MLS has recorded here, placed by its unit number: floors up, lines across, each column as wide as the units in it. Amber is for sale today (a unit listed both for sale and for rent is amber). Hover or tap a unit to read its record.

133 units seen · MLS via Bridge IDX · as of Nov 2, 2026
  • For sale 10
  • Under contract 5
  • For rent 2
  • Sold or leased, last 12 months 20
  • Seen in the MLS before that 96
  • No MLS record seen 305
0102030405060708091011AM361302520151050102030405060708091011AM36130252015105Floors 37 to 38: no unit seen in the MLSFloors 37 to 38: no unit seen in the MLS

Tap a unit to read its record here. Amber and white units open their listing page.

Units seen133of 265 residences on record
Floors with units34floors 1 to 36
Lines13stacks of units, by number

Closed $/SF by height sales in the 24 months to Nov 2, 2026

Upper floorsfloors 26 to 361 sale, too few for a median
Middle floorsfloors 14 to 25$1,541/SF · 10 sales
Lower floorsfloors 1 to 12$1,376/SF · 9 sales

Closed $/SF figures use the 20 recorded sales of these units in the 24 months to Nov 2, 2026; a median needs three. Floor, line and size are the record's. Views and orientation are not in it and are not shown.

Line 04 closed highest per square foot: a median $1,632/SF over 3 sales in 24 months. The largest typical unit is line 03, a median 3,058 sf over 11 units seen, recorded with 3 bedrooms.

The lines what the MLS record holds for each stack of units
LineUnits seenTypical sizeBedsOn the marketClosed $/SF · 24 mo
Line 01162,003 sf22$1,398 3 sales
Line 0261,874 sf2––
Line 03113,058 sf312 sales, too few
Line 04161,425 sf23$1,632 3 sales
Line 05131,400 sf211 sale, too few
Line 0662,024 sf332 sales, too few
Line 07171,658 sf211 sale, too few
Line 0851,600 sf2–$1,625 3 sales
Line 09131,437 sf222 sales, too few
Line 10101,548 sf212 sales, too few
Line 11131,649 sf22–
Line A41,912 sf21–
Line M31,310 sf1–1 sale, too few

6 units in the record sit outside this grid (1510/1511, LPH3, PH-B, PH07, PH11, PHA): penthouse, townhouse or ground-level numbers, or lines seen only once or twice.

How this is drawn: a unit's floor and line come from its MLS unit number alone (5614 is floor 56, line 14). A cell exists only where the MLS has recorded a listing, a closing or a lease; a blank means no record was seen, not that no unit exists. Column widths follow each line's median recorded living area. Pre-construction towers and buildings with a thin record have no drawing.

Floor and line from the MLS unit number; a blank cell means no record was seen. How these numbers are made

The read on Murano Grande at Portofino.

Activity as of Nov 2, 2026
  • Resale +36%. The median closed price moved from $943/SF in 2019 (4 sales) to $1,278/SF in 2026 (8 sales), the first and last years with three or more recorded sales.
  • Gross rental yield 6.3%. A year of rent at the median $6.67/SF/mo (15 leases) against the median $1,278/SF sale (10 sales), both over 12 months, before HOA, taxes and vacancy.
  • Asks run +37% against closings. Sellers ask a median $1,751/SF (11 listings) against $1,278/SF closed (10 sales, 12 months). That gap is negotiation room. Bring the comps.
  • Sells in a median 253 days. Days on market across the 10 sales closed in the last 12 months.

Where it ranks citywide, condo buildings in 17 Miami neighborhoods

  • #88 of 345 · biggest $/sf change since 2021+40.7% median $/SF since 2021 ($1,067 to $1,501) · n 50 · Calendar 2021 vs Oct 2025 to Sep 2026

See the full rankings · How rankings are made

Read the full record 4 paragraphs and 14 facts, every figure from the MLS and county record

Murano Grande at Portofino rises 38 floors at 400 Alton Rd in South Beach and was completed in 2003. County folio records count 265 residences, averaging 2,084 SF of living area. Sieger Suarez Architects designed it for Related Group. The condo archive records it as waterfront (bay).

11 units were for sale on November 2, 2026, asking $1.7M to $8.8M (median ask $1,751/SF across 11 listings). One more was under contract. 10 sales closed between November 2, 2025 and November 2, 2026, from $1.5M to $13M, a median $1,278/SF, after a median 253 days on the market. In the 12 months before that, 11 sales closed at a median $1,438/SF, so the median fell 11%. Across 112 recorded sales since 2019, the best year by median price per square foot was 2025, at $1,453 over 12 sales. That 12-month median ranks 18th of the 83 South Beach buildings with at least three sales in the same window. Two-bedrooms made up 14 of the 21 sales in the last 24 months, at a median $2,312,500.

Five units were offered for rent at $12,000 to $30,000 a month. 15 leases were signed over the same 12 months, at a median $11,000 a month (range $7,500 to $23,000).

County records show 50% of residences as owner-occupied.

Sources: Miami Assoc. of REALTORS® MLS via Bridge IDX (activity as of November 2, 2026), Miami-Dade Property Appraiser records and my condo archive. Blanks mean the record doesn't state it; nothing here is estimated.

The record

Address
400 Alton Rd, Miami Beach 33139
Neighborhood
South Beach
Developer
Related Group
Architect
Sieger Suarez Architects
Front desk / mgmt
(305) 604-5200
Year built
2003
Floors
38
Residences (county-verified)
265
Owner-occupied
50% of residences
Avg. unit size
2,084 sq ft
Total living area
552,373 sq ft
County condo folios
265
Waterfront
Yes / Bay
Recorded MLS listings
276

The numbers at Murano Grande at Portofino.

Every sale and lease the MLS has recorded at this address, sales first.

MLS via Bridge IDX · as of Nov 2, 2026

Median $/SF by year closed

Every recorded sale at this address, 2019 to 2026. Count in the tooltip.

$727$1,453$9432019$8072020$1,0672021$1,2732022$1,2442023$1,1432024$1,4532025$1,2782026$727$1,453$943'19'20$1,067'21'22$1,244'23'24$1,453'25'26
Year by year, every recorded closing
YearSalesMedian $/SFLeasesMedian rent
2026 (to date)8$1,27813$11,000/mo
202512$1,45319$10,000/mo
20249$1,14317$10,000/mo
20239$1,24424$9,250/mo
202217$1,27324$8,500/mo
202140$1,06722$7,625/mo
202013$80725$6,500/mo
20194$9432$6,250/mo*

* Fewer than three closings that year: the figure is the closing itself or the average of two, too few for a median.

Closed $/SF by unit size

Median $/SF of the sales in the 12 months to Nov 2, 2026, with the count beside each bar.

2 bedrooms$1,164/SF · 6 sales
3+ bedrooms$1,564/SF · 4 sales

Medians need three or more sales. How these numbers are made

Own here? See how the building moved since you bought.

Median closed $/SF in 2019: $943 (4 sales). In the last 12 months: $1,278 (10 sales). Change: +36%.

This is the building's movement, not your unit's value. Floor, view, line and condition move a unit's price more than the building does. Only years with three or more recorded sales are listed.

Get your unit's value →
Show all closings 112 sales · 146 leases on record since 2019

Closed sales Nov 2, 2024 to Nov 2, 2026 · 21

UnitBDBASFAskedClosed$/SFClose dateDOM
2309221,437$1,574,000$1,500,000$1,044Oct 30, 2026283
1405221,400$1,699,000$1,600,000$1,143Jul 15, 2026271
350333.53,284$6,150,000$5,750,000$1,751May 14, 2026145
180822.51,600$2,700,000$2,600,000$1,625May 8, 2026354
150822.51,600$2,800,000$2,625,000$1,641Apr 21, 2026246
706332,024$2,999,000$2,785,550$1,376Apr 9, 2026151
221022.51,548$1,900,000$1,825,000$1,179Mar 30, 202624
110122.52,003$2,550,000$2,300,000$1,148Feb 25, 2026260
PHA33.55,305$14,850,000$13,095,000$2,468Nov 25, 2025158
50933.52,643$3,495,000$2,799,999$1,059Nov 5, 2025297
110422.51,425$2,500,000$2,325,000$1,632Oct 30, 202515
200722.51,658$1,589,000$1,550,000$935Aug 11, 2025230
1110221,548$1,550,000$1,525,000$985Aug 8, 202585
120122.52,003$3,175,000$2,880,000$1,438Jul 29, 2025161
200422.51,425$2,550,000$2,500,000$1,754Jun 25, 2025168
220822.51,600$2,590,000$2,350,000$1,469Jun 23, 202598
TH-4M11.51,310$1,599,000$1,440,000$1,099Jun 23, 202513
100333.53,058$4,350,000$4,300,000$1,406May 16, 20256
160422.51,425$2,550,000$2,300,000$1,614Feb 18, 202538
2406332,024$4,100,000$3,900,000$1,927Feb 12, 2025119
100122.52,003$2,995,000$2,800,000$1,398Nov 8, 202441

Leases signed Nov 2, 2025 to Nov 2, 2026 · 15

UnitBDBASFAsked/moLeased/mo$/SF/moLease dateDOM
80822.51,600$17,900/mo$18,000/mo$11.25Oct 20, 20260
1011221,649$10,000/mo$9,000/mo$5.46Sep 7, 202634
1206332,024$18,500/mo$19,000/mo$9.39Sep 1, 202642
1405221,400$10,000/mo$9,500/mo$6.79Sep 1, 20269
911221,649$12,000/mo$11,000/mo$6.67Jun 10, 202683
905221,400$7,500/mo$7,500/mo$5.36May 1, 202673
110222.51,874$13,000/mo$12,000/mo$6.40Apr 27, 202641
191022.51,548$10,500/mo$8,220/mo$5.31Apr 25, 202642
340333.53,284$25,000/mo$23,000/mo$7.00Apr 6, 202620
705221,400$8,200/mo$8,100/mo$5.79Mar 20, 202618
409221,437$12,000/mo$12,000/mo$8.35Mar 12, 202664
LPH-3007221,759$12,500/mo$11,450/mo$6.51Mar 2, 202624
1805221,400$7,950/mo$8,200/mo$5.86Mar 1, 202653
911221,649$12,700/mo$13,000/mo$7.88Dec 1, 2025187
1505221,400$11,000/mo$10,000/mo$7.14Nov 5, 202513

Data: Miami Assoc. of REALTORS® MLS via Bridge IDX, as of Nov 2, 2026. Listings matched to this building's recorded addresses; pending includes under-contract. Closed listings shown as records only, no photos. Blanks mean the record doesn't state it. How these numbers are made

The file on Murano Grande at Portofino.

The rules on record, the documents in my files, the two Florida checks every buyer should run, and the buildings around it. Each card opens.

FEMA flood zone

AE

Inside FEMA's Special Flood Hazard Area. A federally backed mortgage requires flood insurance here.

What the zone means
  • The 1% annual chance ("100-year") flood area, with a base flood elevation set.
  • Base flood elevation 8 ft (NGVD29).
  • The zone is a map line, not a premium. Ask the association for its master flood policy, and get a flood quote for the specific unit before you commit.

FEMA National Flood Hazard Layer, checked at the building's mapped location on Oct 12, 2026. Open the official map ↗

Milestone structural inspection

Due 2033

Due by statute by December 31, 2033, 30 years after 2003, then every 10 years.

What the deadline means
  • Miami-Dade sets 25 years for condo buildings within three miles of the coastline, which would be December 31, 2028.
  • Based on year built 2003 (county record). The statute counts from the certificate of occupancy date, which can differ.
  • The association must give every owner the inspector's summary. Ask for it, and for the structural integrity reserve study, before you commit.

Fla. Stat. § 553.899(3) ↗ and Miami-Dade recertification ↗, read Oct 9, 2026. What the deadline means for buyers

Nearby

Around Murano Grande at Portofino

5 more nearby

Smaller buildings close by: The Gramercy (280 m) · Riva (280 m) · The V (280 m) · The Manhattan (290 m) · Kellar Court (330 m) · Fountainhead Miami Beach (340 m)

Compare with the two nearest →Every South Beach building →Distances are straight-line. Building data from Miami Assoc. of REALTORS® MLS records via Bridge IDX.

Own here, or looking here

Owners: tell me your unit and I'll prepare its value myself. Buyers and renters: I'll tell you when a unit here lists or sells. Either way it starts a conversation with me, not a mailing list.

Own here?

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Tell me your unit and I'll prepare its value myself, from Murano Grande at Portofino's closed sales and what is listed now. Then we talk it through.

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Enrique Ponte Ojeda on a balcony overlooking the water in Miami
I read the building before you buy or sell a unit in it.Closed history, the association's rules, what is really for sale and what it should trade at. Then we talk.
Enrique Ponte Ojeda
Licensed Florida Real Estate Agent · Carmona Realty Group

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