439 CAUSEWAY BOULEVARD, Dunedin, FL, 34698 | $3,750,000

Poised along the iconic Dunedin Causeway, this irreplaceable waterfront estate represents a level of exclusivity rarely seen—standing as the only single-family residence on this world-renowned stretch. Uninterrupted Intracoastal panoramas, refined architectural character, and extraordinary mixed-use potential converge in a setting that is both prestigious and enduring. Zoned FX-M/Short Terms Rentals Approved, the property offers remarkable versatility, allowing for private residential living, boutique hospitality, or future redevelopment. The estate thoughtfully comprises a meticulously renovated main residence paired with an adjacent, income-producing triplex—creating an exceptional opportunity to generate immediate revenue while preserving long-term upside for a boutique hotel concept or curated commercial venture. This is a truly singular offering on the causeway. Beyond a galvanized gate and private pavered drive, the estate reveals itself with a commanding presence overlooking the Intracoastal Waterway. Across the water lies Marker 1 Marina, one of Tampa Bay’s premier marinas, neighboring restaurants and shops are within walking distance and the Pinellas Trail is only a block away, enhancing both the lifestyle appeal and long-term value of this location. The West Indies–inspired main residence has been masterfully reimagined with a focus on coastal sophistication and structural integrity, featuring high-impact windows and doors throughout. Interiors are curated with elevated design elements and bespoke finishes, beginning with an inviting entry level accented by exposed brick and a custom tempered-glass under-stair pet retreat. The GORGEOUSLY RENOVATED lower level unfolds into a private guest suite, complemented by a spa-caliber bath with a walk-in rain shower. A statement media and lounge space anchors the level, complete with custom wall treatments, a dramatic waterfall island, wet bar, and a specialty refrigeration system designed to craft perfectly formed bourbon ice spheres—an entertainer’s indulgence.
An architectural staircase ascends to the primary living level, elevated at 16. 35 feet, where natural light pours into an open-concept living and dining space framed by sweeping water views. The striking designer kitchen, featuring a custom pantry and seamless visual connection to the Intracoastal. The primary suite is a serene retreat, offering abundant light and a spa-inspired bath highlighted by a custom poured concrete vanity and generous wardrobe space. An expansive secondary suite provides flexibility for lounging or guest accommodations, complete with a renovated en-suite bath and walk-in closet. Outdoors, the estate transforms into a private coastal sanctuary. A HEATED SALTWATER pool and spa, complete with sun shelf and bubbler, overlook the Intracoastal, evoking a true resort. The expansive pavered entertaining terrace, enhanced by a cabana, offers ample space for curated outdoor living, while an upper-level balcony captures breathtaking western sunsets over the water. The NEW PRIVATE DOCK is equally impressive, featuring three deep-water slips accommodating vessels exceeding 40 feet, a BRAND NEW 10, 000 lb boat lift, and dual jet ski lifts—delivering seamless access. This is more than a residence—it is a landmark waterfront estate on one of Dunedin’s most coveted stretches, where refined living, income-producing potential, and an elite boating lifestyle are brought together in one extraordinary offering.

Features

  • Rooms: 15
  • Bedrooms: 9
  • Baths: 8 full / 1 half
  • Lot Size: 194 x 78
  • Laundry: Inside, Laundry Room
  • Style: Key West
  • Year Built: 1981
  • Garage: 3-car Boat, Driveway, Electric Vehicle Charging Station(s), Garage Door Opener, Golf Cart Garage, Golf Cart Parking, Ground Level, Oversized, RV Parking
  • Heating: Central, Natural Gas
  • Cooling: Central Air
  • Approx Sq. Feet: 6,437
  • Acreage: 0.36
  • Lot Size: 194 x 78
  • Est. Taxes: $22,535
  • Lot Desc: City Lot, Landscaped, Near Golf Course, Near Marina, Near Public Transit, Oversized Lot, Private, Sidewalk
  • View: Pool, Water
  • Water Front: Yes
  • Elem. School: Dunedin Elementary-PN
  • Middle School: Dunedin Highland Middle-PN
  • High School: Dunedin High-PN
  • Pool: Heated, In Ground, Infinity, Lighting, Outside Bath Access, Salt Water
  • Pet Policy: Yes
  • Appliances: Bar Fridge, Dishwasher, Disposal, Exhaust Fan, Microwave, Refrigerator, Water Filtration System, Water Purifier, Water Softener, Wine Refrigerator
  • MLS#: TB8498731
  • Days on Market: 1 day
  • Website: https://www.raveis.com
    /eprop/TB8498731/439causewayboulevard_dunedin_fl?source=qrflyer
This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this Site comes in part from the IDX Program of MFRMLS (My Florida Regional MLS DBA Stellar MLS). The information being provided is 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. (last updated 5/1/2026 8:21:34 AM)
Listing courtesy of SMITH & ASSOCIATES REAL ESTATE   Phone: 727-282-1788

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NMLS Mortgage Loan Originator ID 16953

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439 CAUSEWAY BOULEVARD, Dunedin, FL, 34698

$3,750,000

Customer Service

William Raveis Real Estate

Phone: 888.699.8876

Contact@raveis.com

Melissa Cohn

RVP, Mortgage Banker

William Raveis Mortgage, LLC

Phone: 917.838.7300

Melissa.Cohn@raveis.com

NMLS Mortgage Loan Originator ID 16953

5/6 (30 Yr)
Adjustable Rate Jumbo*
30 Year
Fixed-Rate Jumbo
15 Year
Fixed-Rate Jumbo
Loan Amount $3,000,000 $3,000,000 $3,000,000
Term 360 months 360 months 180 months
Initial Interest Rate** 5.875% 6.125% 6.000%
Interest Rate based on Index + Margin 8.125%
Annual Percentage Rate 6.312% 6.259% 6.183%
Monthly Tax Payment $1,878 $1,878 $1,878
H/O Insurance Payment $125 $125 $125
Initial Principal & Interest Pmt $17,746 $18,228 $25,316
Total Monthly Payment $19,749 $20,231 $27,319

* The Initial Interest Rate and Initial Principal & Interest Payment are fixed for the first and adjust every six months thereafter for the remainder of the loan term. The Interest Rate and annual percentage rate may increase after consummation. The Index for this product is the SOFR. The margin for this adjustable rate mortgage may vary with your unique credit history, and terms of your loan.

** Mortgage Rates are subject to change, loan amount and product restrictions and may not be available for your specific transaction at commitment or closing. Rates, and the margin for adjustable rate mortgages [if applicable], are subject to change without prior notice.

The rates and Annual Percentage Rate (APR) cited above may be only samples for the purpose of calculating payments and are based upon the following assumptions: minimum credit score of 740, 20% down payment (e.g. $20,000 down on a $100,000 purchase price), $1,950 in finance charges, and 30 days prepaid interest, 1 point, 30 day rate lock. The rates and APR will vary depending upon your unique credit history and the terms of your loan, e.g. the actual down payment percentages, points and fees for your transaction. Property taxes and homeowner's insurance are estimates and subject to change.