521 NEPTUNE AVENUE, LONGBOAT KEY, FL, 34228
Active57 days on marketListed Jun 8, 2026MLS #A4695436
About this home
521 NEPTUNE AVENUE
It's all about location! Rare south end longboat key (Sarasota County) vacant lot situated steps from your own private deeded beach access. Spectacular water views from this oversized lot that's ready to build the home of your dreams. There is nothing else like this piece of property on the market. Close to some of the best dining, shopping, schools, entertainment and world class beaches! In the heart of the awesome Longboat Key one of the best islands in the United States there is truly nothing better then the amazing beach, beautiful blue waters and charming lifestyle of LBK!
Facts & features
The home at a glance
0.31 ac
Lot size
Inside
Outside & construction
Community & fees
Utilities & systems
The numbers
What it really costs
Built from this home's actual numbers — the most recent property-tax bill on record — not generic estimates.
$6,513 /mo · 10% down Conventional, 30-yr fixed at 6%
The assumptions
Above the FHA loan limit for our service areas, so Conventional is the default. VA buyers: switch below — $0 down.
These numbers assume a generic buyer — your credit, down payment and loan program change them. Get the real quote in minutes:
Andrew Acosta
Acosta Home Loans with PRMG · NMLS #1468866
Run your own numbers
FHA isn’t available at this price — the loan would exceed the $541,287 FHA limit for our service areas.
Estimated payment
$6,513/mo
Includes estimated PMI — it drops off once you reach 20% equity. Taxes reflect the most recent bill on record; insurance is a typical-Florida estimate. Your lender’s numbers will differ. CENTURY 21 Edge partners with Florida’s best lenders.
Where it sits
Inside Longboat Key
Get to know Longboat Key. See the full Longboat Key guide →
LONGBOAT KEY 34228 — neighborhood snapshot
Population
7,512
Median age
71.5
Median income
$143,365
Median home value
$959,200
Avg household
1.8
Households w/ children
51%
For the school run
Sarasota County School District
School assignments and ratings via edgeAI — always verify with the district.
The numbers that matter
The Longboat Key market
$820K → $882K
Longboat Key median sold, yr/yr
93.1%
Sale-to-list ratio (12 mo)
Median sold price, Longboat Key, trailing 36 months (3-month rolling) · live MLS data.
This home is listed 55% above the LONGBOAT KEY 34228 median. See the full Longboat Key market guide →
Paper trail
This home's history
Reality check
What actually sold near 521 NEPTUNE AVENUE
Asking prices are opinions — closed sales are facts. The most comparable homes that actually changed hands nearby in the last twelve months.
Sold · Sep ’25$410,000
1417 W CURLEW PLACE · same community
3 bd · 2 ba · 1,683 sqft · $244/sqft · 123 DOM
Sold · Aug ’25$635,000
1117 S FLORIDA AVENUE · same community
3 bd · 2 ba · 2,444 sqft · $260/sqft · 41 DOM
Sold · Jul ’26$3,125,000
2945 PYRULA DRIVE · same community
5 bd · 5 ba · 4,340 sqft · $720/sqft · 46 DOM
Closed-sale data from the MLS, last 12 months, selected for similarity in size and location. No two homes are identical — ask us for a full comparative analysis.
Your home team
The pros in your corner
Buying a home is two conversations — the home and the money. Here’s who handles each, side by side, already working together.
Your agent
David Ramirez
Real Estate Agent · CENTURY 21 Edge
Tours, negotiation, and every question about 521 NEPTUNE AVENUE — start here.
Your lender
Andrew Acosta
Acosta Home Loans with PRMG · NMLS #1468866
Pre-approval, rates, and the real monthly number for 521 NEPTUNE AVENUE — before you fall in love.
See it in person
Schedule a tour
Pick a day that works — this goes straight to David's phone and CRM.
Straight answers
521 NEPTUNE AVENUE FAQs
What would the monthly payment be for 521 NEPTUNE AVENUE?+
With 10% down on a 30-year Conventional loan at 6%, the all-in payment lands around $6,513/mo — principal and interest, the actual property-tax bill and typical Florida insurance. The payment calculator on this page lets you switch loan type (FHA, Conventional, VA) and adjust the down payment, rate and term.
What are the property taxes on 521 NEPTUNE AVENUE?+
The most recent tax bill on record (2025) was $7,330. A new owner's bill can differ once the sale price resets the assessed value — we can walk you through what to expect.
How does the price compare to other homes in Longboat Key?+
At $995,000, this home is listed about 5% above the Longboat Key median of $949,900. The market section on this page shows how the area is trending.
Which schools are assigned to 521 NEPTUNE AVENUE?+
Booker High School (high), Southside Elementary School (elementary), Booker Middle School (middle) — Sarasota County School District. Always verify school assignments with the district before relying on them.
Keep looking
Similar homes nearby
Listing courtesy of W.I.T. REALTY LLC · Nathan Dunham. MLS #A4695436.
IDX information is provided exclusively for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed accurate by Stellar MLS.
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