The Ultimate Keys Compound: A Shelter Bay Masterpiece Welcome to your dream home in Key Colony Beach. Perched on a premier 0.39-acre point lot, 781 9th Street offers an unparalleled 276 feet of deep-water frontage, making it a crown jewel for serious offshore anglers and sunset seekers alike. Step inside to an airy, open-concept sanctuary where the line between indoors and outdoors disappears. Take the elevator to the gourmet kitchen which serves as the heart of the home, featuring premium appliances, island, and abundant cabinetry space, perfect for hosting après-sea gatherings. The master suite is a private retreat with direct access to the wraparound balcony with amazing westward views and a spa-like ensuite bathroom featuring a jetted tub and a separate walk-in shower. The exterior is designed for the ''Keys Life'' at its most vibrant. Whether you're launching a world-class fishing expedition from your 55-foot cut-in slip or enjoying a ''staycation'' by the resort-style pool, the amenities are endless. Kids and adults alike will love the 9-foot deep pool with its own waterslide and splash pad. As the sun sets over Shelter Bay, move to the outdoor kitchen and bar to grill your fresh catch while catching the game on the outdoor TV and enjoying a beautiful Keys Sunset within view to the west. Located in the prestigious Key Colony Beach community, you are just a short boat ride (5 miles) from the iconic Sombrero Light and world-class diving. Enjoy the amenities of KCB, a marina, parks, shops, restaurants, tennis courts, and nearby golf, all while maintaining the seclusion of a private gated, point-lot estate. Large vessels are no problem here with a deep water 55x24 protected slip, and additional boat lift and all the seawall you could want for multiple water toys! Draft is no problem for larger vessels.
Single-familyProperty Type
1977Year Built
0.36 acresLot Size
$1,237Est. Price/Sq.Ft.
Listed by Mark Gable• Engel & Völkers Marathon
Bought with Samuel Williams• Coldwell Banker Schmitt Real Estate Co.
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Refinance
$0
Est. cash available
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Rent
$4,127/mo
Redfin rental estimate
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Market trends in Key Colony Beach, FL
Last updated October 2026
Buyer's Market
Seller's Market
Buyer's market
Sale-to-list price
94.5%
+0.4% MoM
Median sale price
$1.3M
$10K MoM
Avg. days on market
230d
27 days MoM
Recently sold homes
14
3 MoM
Provided by Redfin
Sale history for 781 9Th St
Date
Event
Price
FLKMLS #618752
Apr 9, 2026
Sold
$3,250,000
$1,250/sq ft
Feb 20, 2026
Listed
$3,250,000
$1,250/sq ft
FLKMLS #603186
Sep 26, 2023
Sold
$3,005,000
$1,156/sq ft
Sep 19, 2023
Contingent
—
May 30, 2023
Price Changed
$3,250,000
$1,250/sq ft
May 30, 2023
Relisted
—
Mar 10, 2023
Listing Removed
—
Feb 2, 2023
Price Changed
$3,450,000
$1,327/sq ft
Nov 22, 2022
Listed
$3,674,900
$1,413/sq ft
+66
Point lot on Shelter Bay with 276 ft of useable frontage, 55ft cut in slip, 150 ft of covered porch overlooking Shelter bay, Large 9 ft deep Pool with SLIDE, SPLASHPAD, and water feature, POOL TABLE, Ice Maker, All the makings of your favorite Happy Hour spot overlooking the turquoise water of Shelter Bay, Garage, Storage, Elevator, Concrete structure, Not enough can be said here, Downstairs enclosure has garage and utility area enclosure, Ample parking, Garage access's upstairs of home via elevator. The space here is a must see. 7540 sf under roof between covered porches, interior, garage, utility area, storage, outdoor entertainment area, you've got an entire Keys experience without having to leave property, Access to both ocean and gulf, 5 miles to sombrero light with easy access via a straight shot to and from your dock. The measurements are approx. and based on property data card.
Public Records
Apr 15, 2003
Sold
$1,040,000
$400/sq ft
FLKMLS #409055
Sep 15, 1998
Sold
$765,000
$294/sq ft
Feb 2, 1998
Listed
$799,000
$307/sq ft
MAGNIFICEN GATED HOME AT THE END OF 9TH ST. KCB 400' SEAWALL/60' CUT IN BOAT SLIP PROTECTED DOCKAGE FOR BIG BOAT/LOVELY VIEW ON OPEN WATER BAY/3 BD/4 BA/ELEVATOR/GARAGE/SAUNA/ GOURMET KITCHEN/HUGE POOL/BEAUTIFUL COVERED LANAI AREA UNDER ROOF/THIS HOME HAS A GATED ENTRANCE AND IS TOTALLY PRIVATE. HAS A SEP.
Public Records
Feb 1, 1975
Sold
$32,500
$13/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$25,484 (+5.9%)
$1,590,692 + $1,179,233
$2,769,925
2025
$24,065 (−0.7%)
$1,438,266 + $1,105,457
$2,543,723
2024
$24,225 (+59.0%)
$1,566,220 + $922,449
$2,488,669
2023
$15,235 (+6.4%)
2022
$14,314 (+5.3%)
2021
$13,591 (+5.4%)
2020
$12,897 (+2.1%)
2019
$12,629 (+3.9%)
2018
$12,152 (+3.9%)
2017
$11,694 (−4.8%)
2015
$12,284 (+1.1%)
2014
$12,148
Tax history for 781 9Th St
Year
Property tax
Land + Additions
Assessment*
2026
$25,484 (+5.9%)
$1,590,692 + $1,179,233
$2,769,925
2025
$24,065 (−0.7%)
$1,438,266 + $1,105,457
$2,543,723
2024
$24,225 (+59.0%)
$1,566,220 + $922,449
$2,488,669
2023
$15,235 (+6.4%)
2022
$14,314 (+5.3%)
2021
$13,591 (+5.4%)
2020
$12,897 (+2.1%)
2019
$12,629 (+3.9%)
2018
$12,152 (+3.9%)
2017
$11,694 (−4.8%)
2015
$12,284 (+1.1%)
2014
$12,148
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Public record
Permits
Beds
3
Baths
3
Stories
2
Lot width
—
Lot depth
—
Lot size
0.39 Acres
Year renovated
2017
Sq. Ft.
2,600
Year built
1977
Style
Single Family Residential
County
Monroe County
APN
0566 33 00075800000000
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Nov 12, 2026.
Oct 24, 2027 • Active
Building
Pool and hot tub
Sep 12, 2027 • Active
Building
Remove and replace existing windows and doors with impact-resistant models.
Remodel
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Parking
Parking / Garage Information
Vehicle Storage: Garage, Off Street Parking, Attached