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$3,995,000

For Sale - Active
520 Harbor Cay Dr, Longboat Key, FL 34228
4 Beds
5 Baths
3,828 Square Feet
0.40 Acres Lot
Built in 1986
For Sale - Active
1 Units
Checked: 2 hours ago
Updated: Oct 02, 2025 at 10:26AM

Investment Summary


Monthly Cash Flow
-$19,184
Cap Rate
0.4%
Cash-on-Cash Return
-25.1%
Debt Coverage Ratio
0.06
Internal Rate of Return (5 years)
-20.2%

Property Description


0.40 Acres Lot
Built in 1986
For Sale - Active
1 Units

This exquisite two-story waterfront home located in the coveted Harbor section of Bay Isles has been meticulously renovated to embody modern elegance and luxurious coastal living. Surrounded by lush tropical landscaping, the home welcomes you through an elegant French door entrance into the grand foyer, where soaring ceilings, gleaming travertine flooring, and a striking wrought iron floating staircase with rich, dark wood steps set the tone for the refined elegance that unfolds throughout the home. The lower level boasts a bright and airy open space with hardwood floors throughout, creating a welcoming atmosphere that effortlessly combines sophistication with the timeless beauty of natural materials. The spacious family room is anchored by a stunning fireplace with decorative columns and an elegant mantel, complemented by French doors leading to the expansive waterfront lanai, reinforcing the home's seamless connection to its stunning natural surroundings. A culinary enthusiast’s dream, the generously sized kitchen features a large island with a waterfall granite countertop, custom cabinetry, ample storage space, and high-end stainless steel appliances, including a six-burner gas range and double ovens. Adjacent to the kitchen, the dining area and great room spaces flow seamlessly into each other. The great room is both grand and inviting, showcasing a dramatic wood-clad cathedral ceiling that adds warmth and character. A second stone fireplace enhances the ambiance, while three sets of French doors that open onto the lanai offer an effortless transition between indoor and outdoor living. Also on this level are two generous guest suites, each with a full bath, one with direct lanai access, and a den with full bath. Upstairs, the primary suite is a true retreat. Floor-to-ceiling windows illuminate the space, and French doors open to a spacious private balcony, offering captivating water views that create a peaceful escape. A cozy fireplace adds to the intimate atmosphere, while the spa-inspired en-suite bath indulges with marble flooring, soaking tub, dual vanities, frameless glass walk-in shower, and water closet, all overlooking the serene waterway. The outdoor living space is equally spectacular, designed for both relaxation and entertaining. The expansive lanai features multiple covered areas with a rich wood-clad ceiling and retractable screens, a sun-drenched open-air section, and a stunning saltwater pool with travertine decking framed by verdant tropical landscaping. Just beyond the pool, a private dock with a boat lift sits on a deep-water basin and wide canal with no bridges to Sarasota Bay, offering quick and direct access for boating enthusiasts. Bay Isles Beach Club membership is included. This extraordinary home seamlessly blends elegance, comfort, and the unparalleled beauty of waterfront living, creating a sanctuary that is as functional as it is breathtaking.

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Location


Property Details


Parking

  • Description: Garage Door Opener
  • Details: Circular Driveway, Driveway, Garage Door Opener, Off Street, Attached
  • Garage Spaces: 2
  • Spaces Total: 0

Bedroom Information

  • # of Bedrooms: 4

Bathroom Information

  • # of Baths (Full): 4
  • # of Baths (Partial): 1
  • # of Baths (Total): 5.0

Interior Features

  • # of Rooms: 9
  • # of Stories: 2
  • Fireplace: Yes

Exterior Features

  • Exterior Walls Materials: Wood Siding
  • Roof Type: Gable
  • Roof Material: Tile
  • Pool: Yes

HOA

  • Has HOA: Yes
  • Association: Ken Kanderfer
  • HOA Fee: $2,500/annually
  • Additional Association: Bay Isles, Advanced Mgmt, Inc. - Neil Fleet
  • Additional HOA Fee: $3,720/annually

Land Information

  • Land Use: Residential
  • Land Use Subtype: Single Family Residential

Lot Information

  • Parcel ID: 0008160010
  • Lot Size: 17535 sqft

Property Information

  • Property Type: Single Family Residence
  • Style: Custom, Florida
  • Year Built: 1986

Tax Information

  • Annual Tax: $29,765

Utilities

  • Water & Sewer: Public
  • Heating: Central, Electric
  • Cooling: Central Air

Location

  • County: Sarasota

Listing Details


Listed by:
Steve Walter
MICHAEL SAUNDERS & COMPANY
(941) 809-0907

Source:
Stellar MLS
MLS#: A4643565
Stellar MLS

Investment Summary


Monthly Cash Flow
-$19,184
Cap Rate
0.4%
Cash-on-Cash Return
-25.1%
Debt Coverage Ratio
0.06
Internal Rate of Return (5 years)
-20.2%

Purchase Details

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Purchase price:
$3,995,000
Amount financed:
-$3,196,000
Down payment:
$799,000
Closing costs:
$119,850
Rehab costs:
$0
Initial cash invested:
$918,850
Square feet:
3,828
Cost per square foot:
$1,044
Monthly rent per square foot:
$1.62

Financing Details

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Loan amount:
$3,196,000
Loan to value ratio:
80.0%
Loan type:
Amortizing
Term:
30 years
Interest rate:
6.625%
Principal & interest:
$20,464
Property tax:
$2,480
Insurance:
$434
Private mortgage insurance (PMI):
$0
Monthly payment:
$23,378

Operating Income

Find a Property Manager

% Rent Monthly Yearly
Gross rent:
$6,200 $74,400
Vacancy loss: (6%)
6% -$372 -$4,464
Operating income:
$5,828 $69,936

Operating Expenses


% Rent Monthly Yearly
Property taxes: (40%)
40%-$2,480-$29,765
Insurance: (7%)
7%-$434-$5,208
Property management: (8%)
8%-$496-$5,952
Repairs & maintenance: (5%)
5%-$310-$3,720
Capital expenditures: (5%)
5%-$310-$3,720
HOA fees: (8%)
8%-$518-$6,216
Total operating expenses: (73%)
73%-$4,548-$54,581

Cash Flow


Monthly Yearly
Net operating income:
$1,280 $15,360
Mortgage payments:
-$20,464 -$245,568
Cash flow:
-$19,184 -$230,208