Key Biscayne, FL 33149

Part of Key Colony · 7 buildings

Key Colony No 4 · 121 Crandon Blvd

4-story low-rise, completed 1981, 62 residences in Key Biscayne. 2 for rent on Nov 2, 2026.

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At a glance Key Colony No 4 (121 Crandon Blvd, Key Biscayne) is a 4-story, 62-unit building completed in 1981. As of Nov 2, 2026, no unit is for sale and 2 are for rent; the median rent was $6,800 a month over 6 leases in the last 24 months. FEMA flood zone AE. 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

For sale
0
For rent
2
Median rent
$6,800/mo6 leases · 24 mo
Sales on record
18since 2020
Part of
Key Colony
Built
1981
Floors
4
Residences
62county
Flood zone
AEFEMA

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

On the market at 121 Crandon Blvd.

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.

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 33149

Key Colony No 4, 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.

28 units seen · MLS via Bridge IDX · as of Nov 2, 2026
  • Under contract 1
  • For rent 2
  • Sold or leased, last 12 months 1
  • Seen in the MLS before that 24
  • No MLS record seen 16
484950515253545658596241484950515253545658596241

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

Units seen28of 62 residences on record
Floors with units4floors 1 to 4
Lines11stacks of units, by number

Closed $/SF figures use the 2 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 59, a median 1,820 sf over 3 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 4831,600 sf31–
Line 4921,790 sf2––
Line 5022,173 sf3––
Line 5141,600 sf3–1 sale, too few
Line 5221,720 sf3––
Line 5331,720 sf3––
Line 5421,600 sf2––
Line 5622,254 sf3–1 sale, too few
Line 5821,720 sf31–
Line 5931,820 sf31–
Line 6231,600 sf3––

4 units in the record sit outside this grid (157, 163, 255, 261): 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 121 Crandon Blvd.

Activity as of Nov 2, 2026
  • One of the 7 buildings of Key Colony. Its own condominium, 62 residences at this address (Miami-Dade Property Appraiser). The complex page adds up the sales and listings of every building.
  • Resale +64%. The median closed price moved from $352/SF in 2020 (3 sales) to $576/SF in 2022 (3 sales), the first and last years with three or more recorded sales.
Read the full record 3 paragraphs and 8 facts, every figure from the MLS and county record

Key Colony No 4 is a low-rise condominium of four floors at 121 Crandon Blvd in Key Biscayne, built in 1981. County folio records count 62 residences. It is one of five buildings recorded under the Key Colony No 4 name.

Nothing was listed for sale on November 2, 2026. No sale closed between November 2, 2025 and November 2, 2026; two closed in the 12 months before. Across 18 recorded sales since 2020, the best year by median price per square foot was 2022, at $576 over 3 sales.

Two units were offered for rent at $6,990 to $8,900 a month. Two leases were signed over the same 12 months, at $6,100 and $7,600 a month.

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.

The record

Address
121 Crandon Blvd, Key Biscayne 33149
Neighborhood
Key Biscayne
Year built
1981
Floors
4
Residences (county-verified)
62
County condo folios
62
Recorded MLS listings
57
Also recorded as
121 Crandon Bl

The numbers at 121 Crandon Blvd.

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, 2020 to 2026. Count in the tooltip.

$355$709$3522020$4992021$5762022$7092023$6072024$6532025$355$709$3522020$4992021$5762022$7092023$6072024$6532025

Pale bars: fewer than three sales that year, so the bar is the sale itself or the average of two, too few for a median.

Year by year, every recorded closing
YearSalesMedian $/SFLeasesMedian rent
2026 (to date)––2$6,850/mo*
20252$653*3$6,900/mo
20242$607*5$6,800/mo
20231$709*5$6,800/mo
20223$5765$7,000/mo
20217$49911$5,900/mo
20203$3524$5,500/mo

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

Show all closings 18 sales · 35 leases on record since 2020

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

UnitBDBASFAskedClosed$/SFClose dateDOM
256321,955$1,350,000$1,210,000$619Jun 23, 202529
451321,600$1,200,000$1,100,000$688Jan 22, 202551

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

UnitBDBASFAsked/moLeased/mo$/SF/moLease dateDOM
248321,600$6,200/mo$6,100/mo$3.81May 7, 202696
163321,720$7,600/mo$7,600/mo$4.42Mar 15, 202648

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 121 Crandon Blvd.

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 9 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

Turned 30 in 2011

The statute's first deadline for a building this age was December 31, 2024, then every 10 years.

What the deadline means
  • Based on year built 1981 (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 121 Crandon Blvd

5 more nearby

Compare with the two nearest →Every Key Biscayne 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?

Get your unit's value

Tell me your unit and I'll prepare its value myself, from Key Colony No 4's closed sales and what is listed now. Then we talk it through.

Phone or email. One is enough.

Thinking about

Goes to Enrique only. No mailing list.

Looking here?

Get alerts when a unit lists or sells

When a unit at Key Colony No 4 lists or sells, I'll let you know. I send these myself, not a robot.

Phone or email. One is enough.

Alerts for

Goes to Enrique only. No mailing list.

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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