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    North Haven Vacant Land Opportunity Title is generated by Realmo AI

    46 Robertson Drive, Sag Harbor, NY 11963

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    Claim this Listing
    For Sale
    $3,795,000

    Vacant Land - Sag Harbor, NY

    Lot size:
    1.90 Acres
    Added:
    Jan 27, 2026
    Days on Market:
    114
    Last Refresh:
    May 21 at 10:06 pm

    Property Features for 46 Robertson Drive

    General Information

    Property type
    Land
    Property subtype
    Other
    Rooms
    Basement, Kitchen
    Parking features
    Garage
    Basement Y/N
    1
    Standard status
    Active
    APN
    0901-004.000-0001-034.000
    Lot size
    1.90 Acres

    Taxes and HOA fees

    Tax Annual Amount
    0

    Building Details

    Architectural style
    Other

    We can help!

    Listing Contact
    Alba Jancou

    Listing agent Alba Jancou

    Listing office Saunders & Associates 2287 Montauk Highway, Bridgehampton, NY

    Listing date Jan 27, 2026

    MLS# 11638144 Listing URL

    Copyright © 2026 My State MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

    HighLights

    • 1.92‑acre parcel in a sought‑after Sag Harbor waterfront community with $20M+ estates.
    • Potential to build a substantial compound with a main residence, accessory structure, pool, and tennis court.
    • Conceptual site plan available for a 7,118± SF main house and 1,067± SF accessory structure.
    • Existing livable home allows for immediate occupancy or renovation.
    • Moments from beach access for kayaking, paddleboarding, and harbor enjoyment.
    • Private, quiet, and beautifully maintained neighborhood with mature landscaping.

    Overview

    Located on 1.92 acres in North Haven, this property presents the opportunity to either reside in the existing livable home or develop a new Hamptons estate. Situated in a sought-after waterfront community in Sag Harbor, and surrounded by multi-million dollar estates, the parcel's size allows for a compound with space for a large residence, accessory structure, pool, and tennis court. A conceptual site plan shows a 7,118 square foot main house and a 1,067 square foot accessory structure. Beach access is nearby, suitable for kayaking and paddleboarding. The neighborhood is maintained, quiet, and private, featuring generous spacing between homes and mature landscaping. The current residence is in excellent condition and can be used during the design and building phase, or renovated. The property offers flexibility and potential. Located minutes from Sag Harbor Village, this location combines peace and opportunity.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Residential land & home ...

    Suggested Use

    Real Estate Agency Law Firm Building Supply Hotel & Motel Gym & Fitness Center Department Store

    Zoning and permitted uses should be independently verified with local authorities.

    Location Insight

    • Map
    • Local Demand
    City
    Sag Harbor
    County
    Suffolk
    State
    New York
    Longitude
    -72.322488
    Latitude
    41.022017

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    FAQs

    What type of property is this?
    Residential land & home lot - 1.92 acres in Sag Harbor's waterfront community, development potential.
    Where is this residential land & home lot located?
    The property is located at 46 Robertson Drive Sag Harbor, NY.
    What is the asking price?
    The asking price for this property is $3,795,000.
    What are key features of this property?
    This property features: 1.92‑acre parcel in a sought‑after Sag Harbor waterfront community with $20M+ estates.; Potential to build a substantial compound with a main residence, accessory structure, pool, and tennis court.; Conceptual site plan available for a 7,118± SF main house and 1,067± SF accessory structure.
    (646) 478-6638
    We can help!
    Listing Contact
    Alba Jancou
    Learn More
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    Realmo Value Estimations

    Realmo estimates a property’s market value using a proprietary methodology that incorporates public data and user-submitted information. This cumulative value is generated by integrating a variety of conventional and innovative methods. 

    Disclaimer

    These figures are not official appraisals and should not be used as a substitute for a valuation performed by a licensed appraiser.
    Actual market value may differ due to factors not captured in the data. Estimates are offered for informational purposes only, and users should conduct independent research before making financial or investment decisions.
    By using this feature, you acknowledge that Realmo is not responsible for actions taken based on these estimates.

    AI approach

    Realmo AI Method estimates property value using machine learning models trained on millions of comparable listings, transactions, and market signals. It analyzes property features, location intelligence data, and current market dynamics to predict the most probable market value in real time.

    Realmo CapRate Calculation

    Realmo calculates the Capitalization Rate (Cap Rate) to help estimate a property's potential return on investment. The Cap Rate is a fundamental metric in commercial real estate that measures the relationship between a property's net operating income and its market value.

    How We Calculate Cap Rate

    Cap Rate Formula:
    Cap Rate (%) = (Net Operating Income / Property Value) × 100

    Net Operating Income (NOI) Formula:
    NOI = Area × Lease Rate × (1 - Vacancy Rate) × (1 - Operating Expense Ratio)

    Components

    Net Operating Income (NOI) represents the annual income a property generates after operating expenses:

    • Area: Building square footage from property records
    • Lease Rate: Annual $/sqft based on market data for the property type and geographic location
    • Vacancy Rate: Percentage of unoccupied space based on market data for the property type and location
    • Operating Expense Ratio: Operating costs as a percentage of income, varies by property type

    Property Value is derived from:

    • Recent sale price (if available)
    • Statistical models using comparable sales
    • AI-powered valuation estimates

    Example Calculation

    For a 100,000 sqft Office Building:

    • Lease Rate: $25.00/sqft/year (market data for Office in this area)
    • Vacancy Rate: 8% (market data for Office in this area)
    • Operating Expense Ratio: 35% (typical for Office properties)
    • Property Value: $15,000,000

    Step 1: Calculate NOI

    NOI = 100,000 × $25.00 × (1 - 0.08) × (1 - 0.35)
    NOI = 100,000 × $25.00 × 0.92 × 0.65
    NOI = $1,495,000/year

    Step 2: Calculate Cap Rate

    Cap Rate = ($1,495,000 / $15,000,000) × 100
    Cap Rate = 9.97%

    Property Type Considerations

    Net Operating Income calculations vary by property type due to different operating expense ratios:

    • Office: Higher expenses (30-40%) for HVAC, utilities, maintenance
    • Retail: Moderate expenses (25-35%) for common area maintenance
    • Industrial/Warehouse: Lower expenses (15-25%) for minimal tenant services
    • Multifamily: Moderate expenses (35-45%) including property management
    • Self-Storage: Lower expenses (25-35%) due to minimal maintenance

    Market lease rates and vacancy rates are specific to each property type and geographic location, reflecting local market conditions.

    Disclaimer

    These calculations are estimates for informational purposes only and should not be used as a substitute for professional financial analysis or appraisal.

    • Cap Rate calculations depend on market data that may change over time
    • Actual operating expenses, lease rates, and vacancy rates may differ from market averages
    • Individual property conditions, lease terms, and tenant quality significantly impact actual NOI
    • Property value estimates are approximations and not official appraisals
    • Cap rates vary widely by market, property condition, and investment risk profile

    Professional Guidance Recommended: Before making any investment or financial decisions, consult with licensed appraisers, commercial real estate brokers, and financial advisors who can evaluate your specific property and circumstances.
    By using this feature, you acknowledge that Realmo is not responsible for investment decisions or actions taken based on these estimates.

    Cap approach

    Capitalization Method calculates value based on estimated net operating income (NOI) and applying a market-based capitalization rate (cap rate), we estimate what a typical investor might be willing to pay for it.

    Comparable approach

    Comparable estimate is based on recent sales of similar nearby properties, adjusted for factors like size, condition, and location.

    Relative

    Relative property class coefficient uses factors that account for typical price differences between various asset types (e.g., retail vs. industrial) to provide a more accurate market-aligned estimate.

    Geo

    Comparable Sales Method, enhanced by Geo coefficients — location-based adjustment factors that reflect differences in price levels across neighborhoods, cities, or regions ensuring a more accurate, market-sensitive valuation.

    Stat Estimate

    This method estimates value based on actual market adjusted recent (~5 years) sales of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all similar sales ($/sqft) are above this value
    • Range-to: 75% of all similar sales ($/sqft) are below this value
    AI Estimate

    This method estimates value based on AI market estimation of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all estimations ($/sqft) are above this value
    • Range-to: 75% of all estimations ($/sqft) are below this value
    Alternative use

    Estimate considers the property’s potential value if used for a different purpose-based on zoning, demand, and market feasibility.

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