6423 Collins Ave · Miami Beach, FL 33141 · North Beach
18-story tower, completed 1976, 150 residences in North Beach. 5 for sale and 6 for rent on Nov 2, 2026.
At a glance Mar del Plata (6423 Collins Ave, North Beach) is an 18-story, 150-unit building completed in 1976. As of Nov 2, 2026, 5 units are for sale and 6 are for rent; the median closed price was $496 per square foot over 5 sales in the last 12 months. FEMA flood zone X. Source: Miami Assoc. of REALTORS® MLS via Bridge IDX, Miami-Dade Property Appraiser records and the FEMA flood map.
Photo · MLS listing in this building
MLS via Bridge IDX · as of Nov 2, 2026 · How these numbers are made
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.
Unit 309$970,000$537/SF2 bd · 2 ba · 1,805 sf427 days listed · $1,900/mo HOA · listed by Alicia Eiroa Portella, BrokerFull listing →
Unit 203$960,000$527/SF2 bd · 2 ba · 1,822 sf99 days listed · $1,800/mo HOA · listed by Douglas EllimanFull listing →
Unit 1602$820,000$581/SF1 bd · 2 ba · 1,412 sf1 day listed · $1,417/mo HOA · listed by Douglas EllimanFull listing →
Unit 401$705,000$469/SF1 bd · 2 ba · 1,503 sf27 days listed · $1,403/mo HOA · listed by Cruz International Realty CorpFull listing →
Unit 809$670,000$371/SF2 bd · 2 ba · 1,805 sf99 days listed · $1,784/mo HOA · listed by RE/MAX FIRSTFull listing →
Unit 306$6,500/mo$3.26/SF2 bd · 2 ba · 1,994 sf21 days listed · listed by Coldwell Banker RealtyFull listing →
Unit 203$4,700/mo$2.58/SF2 bd · 2 ba · 1,822 sf37 days listed · listed by Douglas EllimanFull listing →
Unit 309$4,700/mo$2.60/SF2 bd · 2 ba · 1,805 sf157 days listed · listed by Alicia Eiroa Portella, BrokerFull listing →
Unit 703$4,500/mo$2.47/SF2 bd · 2 ba · 1,822 sflisted today · listed by InterConnect Realty LLCFull listing →
Unit 1501$4,490/mo$2.99/SF2 bd · 2 ba · 1,503 sf31 days listed · listed by Charles Rutenberg Realty FTLFull listing →
Unit 1201$4,150/mo$2.76/SF1 bd · 2 ba · 1,503 sflisted today · listed by Douglas EllimanFull listing →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 33141
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.
Tap a unit to read its record here. Amber and white units open their listing page.
Closed $/SF figures use the 11 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.
The largest typical unit is line 06, a median 1,994 sf over 3 units seen, recorded with 2 bedrooms.
| Line | Units seen | Typical size | Beds | On the market | Closed $/SF · 24 mo |
|---|---|---|---|---|---|
| Line 01 | 9 | 1,503 sf | 1 | 4 | – |
| Line 02 | 6 | 1,412 sf | 1 | 1 | 1 sale, too few |
| Line 03 | 3 | 1,822 sf | 2 | 2 | – |
| Line 04 | 8 | 1,278 sf | 1 | – | 2 sales, too few |
| Line 05 | 2 | 1,994 sf | 2 | – | 2 sales, too few |
| Line 06 | 3 | 1,994 sf | 2 | 1 | 1 sale, too few |
| Line 07 | 6 | 1,371 sf | 1 | – | 1 sale, too few |
| Line 08 | 4 | 1,351 sf | 1 | – | 1 sale, too few |
| Line 09 | 9 | 1,805 sf | 2 | 2 | 1 sale, too few |
| Line 10 | 3 | 1,955 sf | 2 | – | 2 sales, too few |
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
Completed in 1976, Mar del Plata stands 18 stories at 6423 Collins Ave in North Beach. County folio records count 150 residences, averaging 1,702 SF of living area.
Five units were for sale on November 2, 2026, asking $670K to $970K (median ask $527/SF across 5 listings). One more was under contract. Five sales closed between November 2, 2025 and November 2, 2026, from $525K to $1.1M, a median $496/SF, after a median 117 days on the market. In the 12 months before that, six sales closed at a median $511/SF, so the median fell 3%. Across 42 recorded sales since 2020, the best year by median price per square foot was 2025, at $522 over 5 sales. That 12-month median ranks 19th of the 45 North Beach buildings with at least three sales in the same window. Two-bedrooms made up six of the 11 sales in the last 24 months, at a median $1,022,500.
Six units were offered for rent at $4,150 to $6,500 a month. Six leases were signed over the same 12 months, at a median $3,850 a month (range $2,400 to $5,500).
County records show 53% 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. Blanks mean the record doesn't state it; nothing here is estimated.
Every sale and lease the MLS has recorded at this address, sales first.
Every recorded sale at this address, 2020 to 2026. Count in the tooltip.
| Year | Sales | Median $/SF | Leases | Median rent |
|---|---|---|---|---|
| 2026 (to date) | 5 | $496 | 6 | $3,850/mo |
| 2025 | 5 | $522 | 4 | $4,025/mo |
| 2024 | 6 | $497 | 3 | $3,600/mo |
| 2023 | 7 | $456 | 4 | $3,995/mo |
| 2022 | 4 | $398 | 4 | $3,600/mo |
| 2021 | 10 | $322 | 7 | $3,550/mo |
| 2020 | 5 | $321 | 11 | $3,000/mo |
| 2019 | – | – | 1 | $4,900/mo* |
* Fewer than three closings that year: the figure is the closing itself or the average of two, too few for a median.
Median $/SF of the sales in the 12 months to Nov 2, 2026, with the count beside each bar.
Medians need three or more sales. How these numbers are made
Median closed $/SF in 2020: $321 (5 sales). In the last 12 months: $496 (5 sales). Change: +55%.
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 →| Unit | BD | BA | SF | Asked | Closed | $/SF | Close date | DOM |
|---|---|---|---|---|---|---|---|---|
| 1204 | 1 | 2 | 1,278 | $725,000 | $670,000 | $524 | Oct 9, 2026 | 117 |
| 1702 | 1 | 1.5 | 1,412 | $725,000 | $700,000 | $496 | Sep 24, 2026 | 26 |
| 1005 | 2 | 2 | 1,994 | $1,199,999 | $1,125,000 | $564 | Sep 11, 2026 | 207 |
| 310 | 2 | 2 | 1,955 | $629,000 | $525,000 | $269 | Jun 15, 2026 | 209 |
| 409 | 2 | 2 | 1,805 | $625,000 | $530,000 | $294 | Jun 5, 2026 | 10 |
| 1605 | 2 | 2 | 1,994 | $1,330,000 | $1,325,000 | $664 | Sep 25, 2025 | 10 |
| 1608 | 1 | 2 | 1,351 | $755,000 | $705,000 | $522 | Sep 15, 2025 | 28 |
| 1607 | 1 | 2 | 1,371 | $745,000 | $630,000 | $460 | Sep 11, 2025 | 138 |
| 1504 | 1 | 2 | 1,278 | $699,000 | $640,000 | $501 | Aug 15, 2025 | 255 |
| 1006 | 2 | 2 | 1,994 | $1,450,000 | $1,350,000 | $677 | May 16, 2025 | 22 |
| 910 | 2 | 2 | 1,955 | $935,000 | $920,000 | $471 | Nov 21, 2024 | 13 |
| Unit | BD | BA | SF | Asked/mo | Leased/mo | $/SF/mo | Lease date | DOM |
|---|---|---|---|---|---|---|---|---|
| 901 | 2 | 2 | 1,503 | $4,000/mo | $3,850/mo | $2.56 | Oct 14, 2026 | 19 |
| 901 | 2 | 2 | 1,503 | $3,850/mo | $3,850/mo | $2.56 | Oct 14, 2026 | 19 |
| 409 | 2 | 2 | 1,805 | $4,700/mo | $4,650/mo | $2.58 | Jul 10, 2026 | 25 |
| 1605 | 2 | 2 | 1,994 | $6,000/mo | $5,500/mo | $2.76 | Apr 10, 2026 | 7 |
| 1101 | 1 | 2 | 1,503 | $3,500/mo | $3,400/mo | $2.26 | Mar 30, 2026 | 55 |
| 207 | 1 | 2 | 1,371 | $2,500/mo | $2,400/mo | $1.75 | Feb 13, 2026 | 64 |
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 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
Outside FEMA's Special Flood Hazard Area. Flood insurance is optional, and still worth pricing.
FEMA National Flood Hazard Layer, checked at the building's mapped location on Oct 12, 2026. Open the official map ↗
Milestone structural inspection
The statute's first deadline for a building this age was December 31, 2024, then every 10 years.
Fla. Stat. § 553.899(3) ↗ and Miami-Dade recertification ↗, read Oct 9, 2026. What the deadline means for buyers
Nearby
Ocean Park130 m away · Built 1968 · 15 floors5 for sale · 0 for lease
Belo Horizonte130 m away · Built 1980 · 5 floorsNothing listed now
The Casablanca150 m away · Built 1948 · 10 floorsNothing listed now
Casablanca Villas160 m away · Built 2008 · 6 floors0 for sale · 2 for leaseSmaller buildings close by: Capri XII (150 m)
Compare with the two nearest →Every North 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.
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.
