$970,000
2 bd · 2 ba · 1,805 sqft
6423 Collins Ave # 309, Miami Beach, FL 33141
MAR DEL PLATA
Mar del Plata Building Guide
6423 Collins Ave, Miami Beach, FL 33141 · Miami Beach
Inside Mar del Plata
On 6423 Collins Ave in Miami Beach, Mar del Plata is a residential condominium. We follow this building unit by unit: each line, floor and exposure trades at its own level, so the listings below are sorted by status — available, under contract and recently closed — rather than blended into a single average.
The layouts seen in recent MLS activity run from 1-bedroom plans up to 2-bedroom residences. Shared facilities on record for the building include business center, doorman, exercise room, lobby secured, pool and sauna — worth confirming with the association which are covered by the monthly dues and which carry their own fees. For closed prices, rents and time-to-sell by bedroom count, scroll to the twelve-month market report for Mar del Plata further down.
Building Record
- Address
- 6423 Collins Ave, Miami Beach, FL 33141
- Median Price / SqFt
- $527
Shared Amenities at Mar del Plata
- Business Center
- Doorman
- Exercise Room
- Lobby Secured
- Pool
- Sauna
- Trash Chute
- Barbecue
- Bike/Jog Path
- Billiard Room
- Elevator Secure
- Elevator(s)
- Secured Garage/Parking
- TV Camera
In-Unit Features at Mar del Plata
- Dishwasher
- Dryer
- Electric Range
- Intracoastal View
- Microwave
- Ocean View
- Refrigerator
- Washer
- Carpet
- Ceramic Floor
- Clear Impact Glass
- Closet Cabinetry
- Elevator
- High Impact Windows
- Interior Hall
- Lobby
- Marble
- Open Balcony
- Parquet
Finishes differ from unit to unit; check any feature against the specific listing before relying on it.
Layouts & Floor Plans in Mar del Plata
Unit layouts recorded in Mar del Plata listings, active and recently closed:
| Residence | Size Range | For Sale | For Rent | Sale Pricing | Avg $/SqFt |
|---|---|---|---|---|---|
| 1 Bed / 2 Bath | 1,278–1,503 sqft | 2 | 1 | $705K – $820K | $525 |
| 2 Bed / 2 Bath | 1,503–1,994 sqft | 3 | 4 | $670K – $970K | $478 |
Compiled from MLS records. Ask for the official plan of a particular line and we will send the developer drawing.
Mar del Plata Listings
Mar del Plata — Units for Sale
Mar del Plata — Units for Lease
Mar del Plata — Sales Under Contract
Mar del Plata — Closed Sales, Past Year
Mar del Plata — Leases Signed, Past Year
$960,000
2 bd · 2 ba · 1,822 sqft
6423 Collins Ave # 203, Miami Beach, FL 33141
MAR DEL PLATA CONDO
$820,000New
1 bd · 2 ba · 1,412 sqft
6423 Collins Ave # 1602, Miami Beach, FL 33141
MAR DEL PLATA CONDO
$705,000
1 bd · 2 ba · 1,503 sqft
6423 Collins Ave # 401, Miami Beach, FL 33141
Mar Del Plata
$670,000
2 bd · 2 ba · 1,805 sqft
6423 Collins Ave # 809, Miami Beach, FL 33141
MAR DEL PLATA CONDO
Mar del Plata: Twelve-Month Condo Readout
A rolling year of recorded closings and signed leases for Mar del Plata, recalculated as new MLS closings post. Switch the metric or bedroom count below to isolate the part of the building stock you are shopping.
- Closed sales:
- 5
- Median closed:
- $670K
- Per sqft:
- $496
- Median days to sell:
- 117
- Year over year:
- −5%
- Leases signed:
- 6
- Median rent:
- $3,850/mo ($2.56/sqft)
$670K
Median (12 mo)
5
Sales (12 mo)
117 days
Median DOM
Last 12 Months by Bedroom Count
| Residence | Sales | Median Sold | Sold $/SqFt | DOM | Leases | Median Rent | Rent $/SqFt |
|---|---|---|---|---|---|---|---|
| 1 Bed | 2 | $700K | $524 | 117 | 2 | $3,400 | $2.26 |
| 2 Bed | 3 | $530K | $294 | 207 | 4 | $4,650 | $2.58 |
Month-by-month table — All
| Month | Sales | Median Sold | Sold $/SqFt | DOM | Leases | Median Rent | Rent $/SqFt |
|---|---|---|---|---|---|---|---|
| Dec 2025 | — | — | — | — | — | — | — |
| Jan 2026 | — | — | — | — | — | — | — |
| Feb 2026 | — | — | — | — | 1 | $2,400 | $1.75 |
| Mar 2026 | — | — | — | — | 1 | $3,400 | $2.26 |
| Apr 2026 | — | — | — | — | 1 | $5,500 | $2.76 |
| May 2026 | — | — | — | — | — | — | — |
| Jun 2026 | 2 | $530K | $294 | 209 | — | — | — |
| Jul 2026 | — | — | — | — | 1 | $4,650 | $2.58 |
| Aug 2026 | — | — | — | — | — | — | — |
| Sep 2026 | 2 | $1.1M | $564 | 207 | — | — | — |
| Oct 2026 | 1 | $670K | $524 | 117 | 2 | $3,850 | $2.56 |
| Nov 2026 | — | — | — | — | — | — | — |
Where Mar del Plata Sits
Towers to Compare With Mar del Plata
Comparable Miami Beach buildings whose current listings overlap the Mar del Plata price band — worth touring side by side:
Questions Buyers Ask About Mar del Plata
Which association documents should I review before buying at Mar del Plata?
Request the current budget, the reserve study, at least a year of board minutes, the rules and regulations, and a written statement of any special assessment that is approved or under discussion. Florida's condo-safety laws now require milestone structural inspections and structural integrity reserve studies for buildings of three or more stories, so ask where Mar del Plata stands on both.
Does Mar del Plata allow pets?
Pet policy is set by the Mar del Plata association and can limit the number, size or type of animals — and a board vote can change it. Get the current rule in writing before you make an offer; we request it as a standard step on every condo purchase we handle.
What leasing rules apply to owners at Mar del Plata?
Minimum lease length, how many times a year a unit may be leased, tenant approval and any waiting period for new owners are association decisions. If you plan to rent the unit out, verify the current policy first; the rental and leased tabs on this page show the lease activity recorded here.
How do view lines and floor height affect value at Mar del Plata?
Inside one tower, price follows the stack: exposure, view corridor, floor height and whether the line is a corner unit all matter. Compare closed prices by bedroom count in the market report, then ask us which lines in Mar del Plata face which direction before you build a shortlist.
Does a unit at Mar del Plata come with parking?
Parking arrangements differ by building and sometimes by unit — assigned spaces, valet, or spaces conveyed as limited common elements. Confirm how many spaces transfer with the specific residence and whether guest parking or storage costs extra.
How does Gromadzki Real Estate price a unit in Mar del Plata?
Building first: closings in the same line and bedroom count, then nearby floors, then comparable towers in Miami Beach. The association's health — reserves, assessments and insurance — gets equal weight, because it shapes the monthly cost of ownership as much as the purchase price does.
What is the street address of Mar del Plata?
The building's address is 6423 Collins Ave, Miami Beach, FL 33141 — part of Miami Beach. The map lower on this page pins its exact location.
Mar del Plata: Building Notes
Building file: Mar del Plata, Miami Beach, Miami Beach, Florida 33141 (Miami-Dade County). Before any offer here we pull the association's current budget, reserve funding, recent board minutes, any approved or proposed special assessment and the building's milestone-inspection status, then price the unit against closings in its own line before looking at neighboring towers. Buyers weighing Mar del Plata usually tour Imperial House, Nautica and Peloro as well. To see a specific unit or ask which lines face which direction, call Matthew Gromadzki at +1 786-370-8570.