3D Render of Home - 640 LYONS LN, LONGBOAT KEY
3D Rendering of Living Room - 640 LYONS LN, LONGBOAT KEY
3D Rendering of Kitchen / Dining area - 640 LYONS LN, LONGBOAT KEY
3D Rendering of Bedroom - 640 LYONS LN, LONGBOAT KEY
Cleared Lot Pool andCage Remain - 640 LYONS LN, LONGBOAT KEY
Cleared Lot Pool andCage Remain - 640 LYONS LN, LONGBOAT KEY
Perfect canal Location with views to the front - 640 LYONS LN, LONGBOAT KEY
Perfect canal Location with views to the front - 640 LYONS LN, LONGBOAT KEY
Lot - 640 LYONS LN, LONGBOAT KEY
Lot from Canal directAccess to bay no fixed bridges - 640 LYONS LN, LONGBOAT KEY
Existing Pool - 640 LYONS LN, LONGBOAT KEY
Existing Pool - 640 LYONS LN, LONGBOAT KEY
Existing Pool - 640 LYONS LN, LONGBOAT KEY
13 photos

$2,850,000

640 LYONS LN
LONGBOAT KEY, FL 34228
Listed by Adrian Johnson · SEA BREEZE REAL ESTATE LLC
Bedrooms
4
Bathrooms
4.5
Living area
3,030 sqft
Year built
2026

About this home

Virtually Staged. Under Construction. Under Construction. Pre-Construction | Custom Build | Water to Front & Rear A once-in-a-generation opportunity on one of Longboat Key's most extraordinary streets. Lyons Lane is a truly singular address — a quiet, private enclave in North Longboat Key where homes enjoy an exceptionally rare double-water setting, with sparkling canal frontage to the rear and serene, protected wetland and mangrove views to the front. This is island living at its most private and unspoiled. Design Your Dream Home The vision is still yours to shape. The buyer has the rare opportunity to work directly with the architect to customize the layout, finishes, and features of this brand-new custom home before it's complete. From floor plan adjustments to material selections, this is your chance to create a residence that is uniquely and entirely your own without the years of planning that a true ground-up build typically demands. The property sits on a prime lot with water on both sides; the property includes an existing pool ready to be incorporated into your design, along with a private boat dock and lift with direct access to Millar and Sarasota Bays and no fixed bridges to the Gulf of Mexico. For the boating enthusiast, it simply does not get better than this deep water access, protected dockage, and open water within minutes. Lyons Lane — Longboat's Best-Kept Secret Unlike any other street on the island, Lyons Lane offers homes on one side only, with lush native mangroves lining the opposite side — ensuring that your views, privacy, and natural surroundings will never be compromised. It is one of the few locations on Longboat Key where you can wake up to undisturbed natural beauty in every direction while remaining just moments from the finest dining, boutique shopping, and white-sand Gulf beaches the island has to offer. Longboat Key — Florida's Premier Barrier Island. Stretching 11 miles along Florida's Gulf Coast with over 25 miles of combined waterfront between the Gulf of Mexico and Sarasota Bay, Longboat Key is consistently ranked among the most desirable addresses in the country. The island attracts discerning buyers who demand privacy, natural beauty, and world-class amenities — including the legendary Longboat Key Club, with 45 holes of championship golf, a full-service deep-water marina, spa, and beach club. Opportunities like this — a custom home, double waterfront, dock and lift, and the freedom to personalize are extraordinarily rare on Longboat Key. Don't miss your chance to build exactly the island life you've always envisioned

Highlights

WaterfrontPrivate poolNew construction

Property details

MLS
Stellar MLS
MLS #
MFRA4674925
Property type
Single Family Residence
Subdivision
SLEEPY LAGOON PARK 2
Status
Active
Days on market
216
On market date
December 21, 2025
Stories
N/A
Total bathrooms
4.5
Garage spaces
5
Parking spaces
N/A
Lot size
0.23 acres
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Nearby schools

Within 10 miles. School directory data from the National Center for Education Statistics (NCES), accessed via the Urban Institute Education Data API. Local Score is calculated by INNOVATE Real Estate; where a state rating is shown, it comes from that state's own official school report card.

Elementary
SEA BREEZE ELEMENTARY SCHOOL
3.83 mi away · Grades -1-5
Nearest school -- attendance-zone data not available here
4.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
533
Student:teacher ratio
14.4:1
District
MANATEE
Middle
W. D. SUGG MIDDLE SCHOOL
4.33 mi away · Grades 6-8
Nearest school -- attendance-zone data not available here
3.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
1,016
Student:teacher ratio
17.2:1
District
MANATEE
High
BAYSHORE HIGH SCHOOL
5.01 mi away · Grades 9-12
Nearest school -- attendance-zone data not available here
2.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
1,385
Student:teacher ratio
19.2:1
District
MANATEE

Walkability

Blended score for LONGBOAT KEY's center, calculated by INNOVATE Real Estate from two sources: the EPA's National Walkability Index (street network, transit, land-use mix) and Google Places amenity data (what's actually reachable on foot from this point). 60% EPA National Walkability Index + 40% nearby-amenity density (Google Places).

45
Somewhat walkable
out of 100
EPA National Walkability Index
10.2 / 20 -- Below average walkable
Google Places amenity density
35 / 100
Restaurants & cafes6
Grocery stores0
Parks4
Schools1
Transit stops0
Pharmacies0

Market position

How this listing compares to current activity in LONGBOAT KEY, from live MLS data.

On the market 216 days -- 46 fewer days than LONGBOAT KEY's current average of 262 days.
For reference, the median list price across 528 active listings in LONGBOAT KEY right now is $624,950.

Mortgage calculator

Estimate only - actual rate and payment depend on your lender, credit, and loan program.

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Est. monthly payment
$17,313/mo
$570,000 down
$2,280,000 loan
Principal & interest$14,788
Property tax (est.)$2,375
Home insurance (est.)$150

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Data source: Listing information provided by Stellar MLS (mfrmls) via Trestle/CoreLogic. Last updated August 27, 2026.

Information herein deemed reliable but not guaranteed; all measurements, school assignments, HOA fees, taxes, and feature lists are approximate and should be independently verified. Equal Housing Opportunity.