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    Cos Cob, CT
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    Cos Cob, CT Residential Land & Home Lots for Sale

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    Buildable Lot with Existing Cottage
    Updated: Oct 27, 2025
    Buildable Lot with Existing Cottage

    9 Walnut Street, Cos Cob, CT 06807

    $1,495,000
    1,482 sqft 0.52 AC lot
    .52‑acre buildable lot in desirable North Mianus neighborhood.
    Fully entitled with plans for a 4,200 sq. ft. custom home.
    Existing 1‑bedroom, 1‑bathroom cottage grandfathered in.
    Cottage suitable for rental income, guest house, or in‑law suite.
    Located at the end of a private road, offering privacy.
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    Turn a Listing Into an Investment Snapshot Cap Rate, Potential NOI, Demand score for every listing. Go To Analytics Center
    Based on your search, we've compiled 5 Potential Opportunities for your consideration. Besides 1 Active listings in Cos Cob, CT, we suggest exploring several alternatives: 4 properties in Nearby Cities

    Opportunities in Nearby Cities

    Here are 4 Similar properties we found in Nearby Locations for your consideration.

    Rare Greenwich/Stamford Land Opportunity
    Rare Greenwich/Stamford Land Opportunity

    June Rd LOT 1, Stamford, CT 06904

    $2,880,000
    25.04 AC lot

    24+ acres on Greenwich/Stamford border, two approved building lots.

    View details
    Residential Development Land
    Residential Development Land

    39 Brookridge Drive, Greenwich, CT 06830

    $9,500,000

    Land parcel offered for sale near E. Putnam Avenue in Fairfield County, CT.

    View details
    Residential Land Development Opportunity
    Residential Land Development Opportunity

    147 Stanton Dr, Stamford, CT 06902

    Contact for pricing
    3.00 AC lot

    Approximately 3-acre assemblage offered as eight parcels for residential development under zoning allowing up to 12 units/acre.

    View details
    Riverside Land with Subdivision Potential
    Riverside Land with Subdivision Potential

    25 Mary Ln, Greenwich, CT

    Contact for pricing
    4.68 AC lot

    Almost 5 acres in Riverside with subdivision potential.

    View details

    Cos Cob, CT Residential Land & Home Lots Market Trends and Statistics

    Explore 1 residential land & home lots for sale in Cos Cob, CT on our real estate platform. These investment opportunities span a total of 22,651 square feet of properties for sale, with an estimated market value of $1,495,000.

    Sale prices for home sites in Cos Cob, CT average $1,495,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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    Top Commercial Asset Segments

    Commercial property segments ranked by active listings on the market

    Residential land & home lots 1

    Demographics Overview

    Population 7,667
    Population Growth (5Y) +3.8%
    Median Household Income $194,492

    Taxes & Financing

    Tax Rate (average for all types) 1.17%
    Property Tax per SF $12.89 per SF
    Tax Rate vs County Average 1.26 pp below county avg
    Average Loan-to-Value 65.0%

    Listings Trend

    New vs delisted commercial listings in Fairfield County

    New Delisted

    Total CRE Inventory on Market (SF)

    Average Property Price per SF

    For-sale pricing trends across core commercial property types in Fairfield County

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