340 Cocoanut Ave, Grassy Key, FL 33050
OFF MARKET

340 Cocoanut Ave
Grassy Key, FL 33050

  • 3 Beds
  • 2 Baths
  • 960 sqft

$578,200

Trulia Estimate
as of Aug 9, 2026
Est. Refi. Payment $3,394/mo*
Refinance Your Home

$578,200

Trulia Estimate
as of Aug 9, 2026
Est. Refi. Payment $3,394/mo*
Refinance Your Home
3 Beds
2 Baths
960 sqft

Local Information

  • Map ViewExplore the area around 340 Cocoanut Ave.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1989
Living Area
960 sqft
Price/Sqft
$602

About this House

This single-family home is located at 340 Cocoanut Ave, Grassy Key, FL. 340 Cocoanut Ave is in Grassy Key, FL and in ZIP code 33050. This property has 3 bedrooms, 2 bathrooms and approximately 960 sqft of floor space. This property has a lot size of 7500 sqft and was built in 1989.
340 Cocoanut Ave, Grassy Key, FL 33050 is a 3 bedroom, 2 bathroom, 960 sqft single-family home built in 1989. It is currently off market. The Trulia Estimate is $578,200, with a rent estimate of $3,603/month.

Home Details for 340 Cocoanut Ave

Interior Features

Heating & Cooling
Heating: Forced AirHeating Fuel: Forced Air
Levels, Entrance, & Accessibility
Stories: 2Floors: Other

Exterior Features

Exterior Home Features
Roof: MetalExterior: WoodFoundation Type: Piling
Parking & Garage
Parking: Carport

Property Information

Year Built
Year Built: 1989Year Updated: 2000
Property Type / Style
Property Type: Single Family Home

Community

Units in Building: 1

Lot Information

Lot Area: 7500 sqft

Market trends in Marathon

Last updated June 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$723K
$19.17KMoM
Sale-to-List Price
94.6%
Price per sq ft
$628
$22MoM
Available listings
251
17MoM
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Property Tax and Assessment

Year2025
Tax$5,346
Assessment$490,311
Home facts updated by county records

Comparable Sales for 340 Cocoanut Ave

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
370 Cocoanut Ave, Grassy Key, FL
0.02
Single-Family Home
$500,000
10/29/25
2
2
864
347 Guava Ave, Grassy Key, FL
0.03
Single-Family Home
$390,000
12/30/25
3
1
1,008
254 Orange Ave, Grassy Key, FL
0.16
Single-Family Home
$525,000
12/17/25
3
1
912
57485 Gibson St, Grassy Key, FL
0.76
Single-Family Home
$550,000
06/17/26
3
2
1,056
58121 Morton St, Grassy Key, FL
0.17
Single-Family Home
$2,700,000
05/29/26
4
2.5
1,464
57453 Goodley St, Grassy Key, FL
0.81
Single-Family Home
$580,000
05/20/26
3
2
1,147
58704 Overseas Hwy, Grassy Key, FL
0.58
Single-Family Home
$550,000
03/16/26
2
1
1,160
58213 Morton St, Grassy Key, FL
0.11
Single-Family Home
$3,800,000
06/08/26
3
4.5
4,000
58618 Overseas Hwy, Grassy Key, FL
0.54
Single-Family Home
$2,200,000
12/17/25
4
4.5
2,433
57538 Bailey St, Grassy Key, FL
0.72
Single-Family Home
$440,000
12/01/25
2
1
874

Nearby homes

Get a sense of prices in the area by checking nearby homes.
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Assigned Schools

These are the assigned schools for 340 Cocoanut Ave.
View nearby schools on GreatSchools
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

What Locals Say about Marathon

At least 61 Trulia users voted on each feature.

  • 83 % Say car is needed

  • 79 % Say people would walk alone at night

  • 76 % Say parking is easy

  • 72 % Say it's quiet

  • 70 % Say it's dog friendly

  • 70 % Say yards are well-kept

  • 68 % Say there's holiday spirit

  • 61 % Say it's walkable to restaurants

  • 53 % Say there's wildlife

  • 53 % Say they plan to stay for at least 5 years

  • 51 % Say there are community events

  • 49 % Say kids play outside

  • 45 % Say neighbors are friendly

  • 37 % Say it's walkable to grocery stores

  • 36 % Say there are sidewalks

  • 29 % Say streets are well-lit

Sourced by Trulia users. Learn more about our methodology.
  • 4yrv5tc4qr
    "Seafood festival, theater, music festival, turtle releases, homecoming parade, 4th of July fireworks on the beach"
    1
    Flag
  • Ingridfox
    "people love walking dogs on the beach and dog dog park at Sombrero Beach. A lot of restaurants are dog friendly. This is a great place for dog owners. "
    1
    Flag
  • C E.
    "There is no place for kids to hang out really except for the skate park. There are no malls, no skating rinks, no places for kids to meet safely. "
    1
    Flag
  • Jan M.
    "We have basic public transportation. I’d take a taxi anywhere in town. .............................,,"
    0
    Flag
  • Erin F.
    "There’s plenty of grass, sidewalks and quiet roads to walk along.. plus the public beach is always a dogs favorite adventure.. just pick up after your dog!"
    2
    Flag
  • Thurmankolb
    "Yes! Dog park just down the street. Lots of neighbors know each other by our dogs. Great vets n Marathon and good groomer."
    6
    Flag
  • Thurmankolb
    "Lots of community events and activities. Fishing tournaments, seafood festival, school carnivals, etc... "
    2
    Flag
  • Jamie B.
    "Everyone gets together for the kids at Halloween. We have a community park with special events planned for the kids and the beach is the sight for a special 4th of July. "
    0
    Flag
  • Abiezer31
    "Of course ,the neighbors the owner and dog are very nice I’m very proud living in my house.and this neighborhood "
    3
    Flag
  • Darren S.
    "I live off the beaten path across the street from a golf course. It's very quiet and tranquil. throb marinas surrounding the property and can walk to All shops and stores."
    0
    Flag
  • Cyndiepalmer
    "We are a friendly neighborhood. You walk your street and say Hi anytime. It is a safe street to live "
    0
    Flag
  • Ksperkinson
    "Safe clean near ocean good police pet friendly hospital is coming along in the construction have contract here at hospital looking forward to finding a good place for 3 months"
    0
    Flag
  • Stephanie M.
    "A lot of kids and cars. A fire station that is noisey but nice. Lizards everywhere. There is one hotel on this small island. There are A lot of Vacation homes here and crab catchers. When it rains you can't see the road."
    0
    Flag
  • Lb2071
    "water front community , is a small island called Flamingo Island. We have a 9 hole golf course and just 5 minutes from Publix and Kmart. Sombrero beach is right at the outset of the canals on the Atlantic ocean and the people are very loving and friendly."
    0
    Flag
  • Gonzalez8834
    "Marathon is a great place to life and have a family, very safe, quiet and full of great people. ......"
    0
    Flag
  • Tom A. C. M.
    "I live here (14 years) and love the area. Close accessibility to shopping, schools, churches, golf, beach, walking, biking. "
    0
    Flag
  • Anne K.
    "Lived here for many years and is one of the best places to live in Marathon. Conveniently located near schools, parks, shopping and beach just minutes away."
    0
    Flag
  • Debra G.
    "Only 8 miles from Marathon. Away from the winter traffic, airport noise. Crystal clean, flow through canals. Great place to vacation and a great place to live. "
    0
    Flag

LGBTQ Local Legal Protections

Apartments for Rent

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Explore by feature - Pet Friendly

16 pet-friendly rentals in Grassy Key, FL

Explore by feature - Garage

7 rentals with a garage in Grassy Key, FL

Explore by feature - Air Conditioning

20 rentals with air conditioning in Grassy Key, FL

Explore by feature - Pool

19 rentals with a pool in Grassy Key, FL

Explore by feature - Washer/dryer

24 rentals with a washer/dryer in Grassy Key, FL

Homes for sale near 340 Cocoanut Ave

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Off Market Homes Near 340 Cocoanut Ave

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Frequently asked questions about 340 Cocoanut Ave

  • What is 340 Cocoanut Ave estimated to be worth?
    Trulia's estimated value for 340 Cocoanut Ave in Grassy Key, FL is $578,200.
  • Is Grassy Key a buyer's or seller's market?
    Grassy Key is currently a buyer's market, based on recent for-sale activity.
  • What's the median sale price in Grassy Key?
    The median sale price in Grassy Key is $723K. That is down $19.17K from the prior month.
  • What do residents say about Grassy Key?
    Residents describe Grassy Key, FL as easy to park in, quiet, and dog-friendly. Most residents say you need a car. See recently sold homes in Grassy Key, FL.
  • How big is the lot at 340 Cocoanut Ave?
    The lot at 340 Cocoanut Ave in Grassy Key, FL is about 0.17 acres (7,500 sq ft).
  • Does 340 Cocoanut Ave have parking?
    Yes, 340 Cocoanut Ave in Grassy Key, FL has on-site parking.