20 NEPTUNE DRIVE
About This Property
Welcome to 20 Neptune, a true waterfront retreat for those who crave privacy, connection to nature, and everyday comfort without compromise (and NO FLOOD INSURANCE!). Nestled along the quiet banks of the Gunpowder River with direct access to the Bay, this home delivers a lifestyle that feels like a getaway but functions beautifully for everyday living. The island behind the property is protected land that will never be developed. It also acts as a buffer during major storms. When the leaves fall, the view beyond that island expands beautifully.
Experience a resort-like setting here. The saltwater pool and spa are framed by native perennial gardens, intentionally planted for color, privacy, and ease of care through every season. From your private dock with boat lift, kayak launch, and gazebo, you can start your day on the water and end it with sunset views that never grow old.
Inside, the layout flows easily between indoor and outdoor spaces. Whether hosting friends or enjoying a quiet morning by the water, this home was designed for effortless living. Thoughtful updates bring modern comfort: heated tile floors, a Trane High-Efficiency HVAC (2021), paid-in-full solar panel system, and crawlspace encapsulation for efficiency and healthier air.
The owner's suite is a private retreat of its own, complete with a walk-in closet, spa-inspired bath, and balcony overlooking the water. Every space here feels intentional, warm, welcoming, and ready for the next chapter of its story. This is a home for those who cherish natural beauty, lasting comfort, and a lifestyle that flows as easily as the river it overlooks. At 20 Neptune, every sunrise, tide, and breeze feels like an invitation to slow down and live fully. Welcome home!
Payment Calculator
Your Estimated Monthly Payment
Cap Rate Calculator
What does this mean?
Based on our analysis, the cap rate of this property is 1.25%. A negative cap rate indicates that the property might not be feasible as an income-producing asset. The median cap rate for a near zip code 11238 is 4.23%.
How much can I actually make?
Actual monthly rental income may vary between $4,760 and $7,140 depending on unit-specific characteristics. You can change the amount using the slider to further explore.
How is cap rate calculated?
Cap Rate = Net Operating Income (NOI) / Property Asset Value.
When calculating the cap rate, we assume 100% occupancy. Leverage (mortgage) is not considered.
Cap Rate provided by RealtyHop and RentHop, learn more about cap rate here.
Price History
| Date / Event | Date | Event | Price |
|---|---|---|---|
| Dec 30, 2025 | Sold | ||
| Sold | |||
| Nov 5, 2025 | In contract | - | |
| In contract | |||
| Oct 20, 2025 | Price Decreased |
$675,000
↓ $15K
(2.2%) | |
| Price Decreased | |||
| Oct 10, 2025 | Relisted | $689,900 | |
| Relisted | |||
| Sep 19, 2025 | In contract | - | |
| In contract | |||
Property Highlights
Building Info
Comparables
Status
Price/ft²
Listed On
Sold On
Phone: 425-283-2930
Address: 335 Madison Avenue, New York, NY 10017