For sale

$5,500,000

Est. $33,653/mo —

•

1,847

sq ft

605 21st Ave S, Naples, FL 34102

About this home

The most coveted water in Naples runs behind this lot. In Aqualane Shores, value has always been measured in three things: land, water, and street. This site holds all three. Nearly a third of an acre, 14,810 square feet, on 21st Avenue South, the street Aqualane buyers name first and leave last. At the back of the lot, deep water: one of the canals that made this neighborhood the boating address of Naples, with Naples Bay, Gordon Pass, and the Gulf minutes beyond. The 1978 residence standing here has served its era. What you are buying is what comes next: the site for the home you have been planning in the back of your mind, at the address that justifies building it at full scale. Walk the lot lines. Pace the setbacks. Picture the second story and the water it frames. This is a purchase measured in decades, not finishes. Aqualane Shores was platted once and built out long ago. No one is making more of it, and no one is making more of 21st Avenue South. Opportunities here open when an owner lets go, and they close the same way: quietly, to the buyer who saw the future first.

Single-familyProperty Type

1978Year Built

0.34 acresLot Size

$2,978Price/Sq.Ft.

2 car garageParking

Listed by Jason Knox • Compass Florida LLC

Listed by Brian Knox • Compass Florida LLC

Listing updated: Aug 10, 2026 at 04:07pm

Redfin checked: a few seconds ago

•Source:NAPLESMLS #226028914

Payment calculator

$33,653 per month

Principal and interest$28,905

Property taxes

$578

HOA dues

Home insurance

$4,171

Utilities

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See this home in person

This home is unavailable to tour on this day.

Next available date: Thursday, September 10

Open houses

No upcoming open houses.

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Around this home

Schools

K - 12
Preschool & daycare

Lake Park Elementary School

Public PreK-5 • Assigned • 3.0mi

10/10

Gulfview Middle School

Public 6-8 • Assigned • 1.5mi

9/10

Naples High School

Public PreK-12 • Assigned • 3.5mi

6/10

Provided by GreatSchools

About Aqualane

Shores

Aqualane Shores, located between Naples Bay and the Gulf of Mexico, is a waterfront and residential Naples neighborhood with deep-water canals and palm-lined streets. The neighborhood’s character concentrates along 3rd Street S near 13th Avenue S, where gallery storefronts, chef-driven dining rooms, and polished patios set the tone. Low-slung midcentury homes mix with contemporary coastal builds, many oriented to docks and sunset-facing lanais. The Naples Pier frames evening walks, while Gordon Pass marks the working edge of the bay. Third Street South Farmers Market adds a weekly ritual of local produce and small-batch goods. The Naples Yacht Club and The Naples Players anchor the social calendar beyond the water.

Provided by Walk Score and Local Logic

Offer insights

605 21st Ave S · $5,500,000

Strong offer

$5.39M and above

75% chance or better to win

Why $5.39M+ is a strong offer

DAYS ON MARKET

The average home goes pending in 89 days.

SALE-TO-LIST

Most homes are selling 5% below list price.

About offer insights

Property details

Interior
Exterior
Finance

Interior features
High speed internet available
Smoke detectors
Great room floor plan
Den / study
Laundry in residence
Unfurnished

Bedrooms
3 bedrooms
Primary bedroom on ground level

Bathrooms
2 full bathrooms
Primary bathroom with shower only

Kitchen
Electric cooktop
Microwave
Dishwasher
Refrigerator/Freezer

Laundry & utility
Washer
Dryer
Auto garage door opener

Flooring
Carpet
Tile

Heating & cooling
Central electric heat
Central electric air conditioning
Ceiling fans

Sale and tax history for 605 21st Ave S

Sale History
Tax History

Public record

Public record
Zoning
Permits

Beds

—

Baths

—

Stories

—

Lot width

—

Lot depth

—

Lot size

0.34 Acres

Year renovated

1978

Finished Sq. Ft.

1,847

Unfinished Sq. Ft.

—

Total Sq. Ft.

1,847

Year built

1978

Style

Single Family Residential

County

Collier County

APN

01881680004

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 12, 2026.

Climate risks

10/10 Flood Factor

Estimated 80%+ chance of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

10/10 Heat Factor

7 days above 107° expected this year, 25 days in 30 years

10/10 Wind Factor

99% chance of strong winds in next 30 years

3/10 Air Factor

3 unhealthy days expected this year, 3 days in 30 years

Provided by First Street

Historical weather

Naples, FL • 34102

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

94/ 100

Exceptional sunlight

Sunscore

This home receives average direct sun exposure in Naples. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

9.2 hrs

7 hrs

JuneDecember

Provided by Shadowmap

Redfin Estimate for 605 21st Ave S

We cannot show automated home-value estimates for this home.

Nearby homes have recently sold between $1,137,000 and $6,100,000.

Nearby comparable homes

The Redfin Estimate uses 5 recent nearby sales, priced between $1.1M to $6.1M.

SOLD JUL 10, 2026
$6,100,000 Last sold price
4 beds3.5 baths3,925 sq ft
1942 Kingfish Rd, Naples, FL 34102
$1424/sq ft
smaller lot
23 years newer
SOLD MAR 24, 2026
$3,150,000 Last sold price
3 beds3 baths2,721 sq ft
2360 Snook Dr, Naples, FL 34102
$1820/sq ft
smaller lot
18 years newer
SOLD AUG 10, 2026
$5,850,000 Last sold price
4 beds3 baths2,297 sq ft
356 11th Ave S, Naples, FL 34102
$431/sq ft
smaller lot
48 years older
SOLD JUL 15, 2026
$5,087,500 Last sold price
4 beds4.5 baths3,607 sq ft
1456 Curlew Ave, Naples, FL 34102
$1568/sq ft
smaller lot
48 years newer
SOLD JUN 16, 2026
$1,137,000 Last sold price
3 beds2 baths2,345 sq ft
4451 Yacht Harbor Dr, Naples, FL 34112
$2493/sq ft
smaller lot
11 years newer

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