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    Flanders, NY Office Spaces for Lease

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    Office Units with Private Offices
    Updated: Sep 2
    Office Units with Private Offices

    225 Howell Avenue, Riverhead, NY 11901

    $10,000/Mo
    0.61 AC lot
    5,000‑square‑foot office building with eight private offices
    Open central workspace currently arranged with cubicles
    Large conference room for meetings, presentations, and collaboration
    Full kitchen with cooktop, microwave, and refrigerator
    Twenty plus on‑site parking spots
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    Furnished Corner Office Suite
    Updated: Aug 14
    Furnished Corner Office Suite

    80 W Main Street, Riverhead, NY 11901

    $2,500/Mo
    480 Sqft furnished corner office suite
    Three private offices plus a waiting room
    Elevator‑served brick building on Main Street in downtown Riverhead
    Electricity, heat, and cooling included
    Free municipal parking available
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    Office Unit with Conference Room
    Office Unit with Conference Room

    224 Griffing Avenue, Riverhead, NY 11901

    $1,200/Mo
    0.12 AC lot

    Office accommodation within an established legal workspace, with conference room access and key building services included in the lease.

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    Turn a Listing Into an Investment Snapshot Cap Rate, Potential NOI, Demand score for every listing. Go To Analytics Center
    Office Building with Private Offices
    Office Building with Private Offices

    225 Howell Ave, Riverhead, NY 11901

    $10,000/Mo
    5,000 sqft

    Flexible office layout includes private rooms, open work areas, conference space, and a full kitchen.

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    Renovated Office Unit
    Renovated Office Unit

    189 Main- Suite A Road, Riverhead, NY 11901

    $4,700/Mo
    2.52 AC lot

    Fully built-out space offers private offices, workstations, natural light, and customer and employee parking.

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    Mixed-Use Building with Divisible Space
    Mixed-Use Building with Divisible Space

    3225 Sound Ave, Riverhead, NY 11901

    $5,000/Mo
    2,960 sqft 1.75 AC lot

    One-story commercial property with two bathrooms and a flexible layout for retail, office, or professional use.

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    Storefront Office Unit
    Storefront Office Unit

    34b-40 Peconic Ave, Riverhead, NY 11901

    $1,700/Mo
    200 sqft

    Professional workspace includes shared conference, training, and kitchen facilities.

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    Furnished Coworking Space
    Furnished Coworking Space

    30 W Main St Unit 207, Riverhead, NY 11901

    $750/Mo per office

    Renovated shared workspace with furnished offices, meeting areas, private amenities, and included building services.

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    Two-Suite Medical Office Building
    Two-Suite Medical Office Building

    1190 Old Country Road, Riverhead, NY 11901

    Contact for pricing
    3,446 sqft 0.36 AC lot

    The building contains two medical suites with the option to combine them.

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    Historic Office Building with Attic
    Historic Office Building with Attic

    1586 Main Rd, Riverhead, NY 11901

    $4,000/Mo

    Multi-level layout includes offices, a kitchen, bathrooms, storage, an attic, and a basement.

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    Furnished Offices and Shared Workstations
    Furnished Offices and Shared Workstations

    30 W Main St 207, Riverhead, NY 11901

    $750/Mo per office

    Furnished offices and workstations in downtown Riverhead with included utilities.

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    Fully Renovated Office Suite
    Fully Renovated Office Suite

    A-189 Main Rd, Riverhead, NY 11901

    $4,700/Mo

    Fully renovated office suite with central air, gas heat, private offices, and two private bathrooms.

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    Based on your search, we've compiled 33 Potential Opportunities for your consideration. Besides 12 Active listings in Flanders, NY, we suggest exploring alternatives. Consider Similar 4 Spaces in Nearby Cities, and Similar 13 Properties for Sales.

    Office Spaces for Lease in Nearby Cities

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

    East Quogue Commercial Office Space
    East Quogue Commercial Office Space

    472 Montauk Highway, East Quogue, NY 11942

    $1,850/Mo
    800 sqft

    Premium office spaces in East Quogue, convenient to Hamptons.

    View details
    Second-Floor Office Units
    Second-Floor Office Units

    472 Montauk Highway, East Quogue, NY 11942

    $1,850/Mo

    Two flexible offices offer natural light and can be leased separately or together.

    View details
    Historic Office Building
    Historic Office Building

    1586 Main Road, Jamesport, NY 11947

    $4,000/Mo

    Two-level office configuration with kitchen, bathrooms, storage, attic, and basement areas.

    View details
    Historic Office Building
    Historic Office Building

    1586 Main Road, Jamesport, NY 11947

    $4,000/Mo

    Well-maintained historic office building offering two floors with multiple rooms, plus kitchen and bathroom facilities.

    View details

    Similar Spaces for Sale in Flanders, NY

    Consider Similar Space for Sale. We found 13 Spaces matching your search parameters.

    Office Building with Private Offices
    Office Building with Private Offices

    225 Howell Ave, Riverhead, NY 11901

    $1,400,000
    5,000 sqft

    DC-3 zoning accompanies a move-in-ready layout for professional and administrative operations.

    View details
    Renovated Two-Unit Medical Office Building
    Renovated Two-Unit Medical Office Building

    1190 Old Country Rd, Riverhead, NY 11901

    $1,475,000
    3,446 sqft

    Renovated two-unit medical office building with strong income potential and 100% occupancy.

    View details
    Renovated Mixed-Use Property with Apartment
    Renovated Mixed-Use Property with Apartment

    1228 Roanoke Avenue, Riverhead, NY 11901

    $725,000
    0.21 AC lot

    Professional Business zoning supports office use with a renovated one-bedroom apartment and separate access.

    View details
    Office Building with Private Offices
    Office Building with Private Offices

    225 Howell Avenue, Riverhead, NY 11901

    $1,400,000
    0.61 AC lot

    Flexible professional workspace combines enclosed offices, collaborative areas, a conference room, kitchen, and on-site parking.

    View details
    Medical Office Building with Parking
    Medical Office Building with Parking

    976 Roanoke Avenue, Riverhead, NY 11901

    $699,007
    0.22 AC lot

    Flexible professional layout includes treatment rooms, private offices, two bathrooms, and central air conditioning.

    View details
    Mixed-Use Building with Retail
    Mixed-Use Building with Retail

    71 E MAIN ST, Riverhead, NY 11901

    Contact for pricing
    14,990 sqft 0.21 AC lot

    Ground-floor retail is combined with second-floor office space that may support residential conversion.

    View details
    NNN Office Investment Property
    NNN Office Investment Property

    33 W 2nd St, Riverhead, NY 11901

    $6,495,000
    26,235 sqft

    Single-tenant office asset with a new long-term NNN lease and elevator access.

    View details
    Renovated Live-Work Building
    Renovated Live-Work Building

    1228 Roanoke Ave, Riverhead, NY 11901

    $725,000

    Professional Business zoning supports office use with a separate residential apartment above.

    View details
    Subdividable Commercial Land For Sale
    Subdividable Commercial Land For Sale

    845 Raynor Ave, Riverhead, NY 11901

    Contact for pricing
    10,000 sqft 8.00 AC lot

    8 acres of subdividable commercial land in Riverhead, NY.

    View details
    Renovated Mixed-Use Property with Loft
    Renovated Mixed-Use Property with Loft

    1550 Main Road, Riverhead, NY 11901

    $825,000
    0.12 AC lot

    Renovated storefront and residence with private parking, unfinished loft space, and flexible live-work potential.

    View details
    Fully Leased Office Complex
    Fully Leased Office Complex

    518-526 E Main St, Riverhead, NY 11901

    $5,250,000

    Three-building property with professional suites and on-site parking near downtown attractions.

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    7-Unit Office Complex
    7-Unit Office Complex

    526 E Main Street Unit #518, Riverhead, NY 11901

    $5,250,000

    Fully leased office complex with three buildings, convenient downtown access, and 95 parking spaces.

    View details

    Potential Development Sites for Consideration

    Can't find the perfect fit? These Land listings present an alternative path: the potential to develop a property for your specific goals.

    Important: These AI-suggestions are a starting point, not a guarantee of permitted use. All zoning, permitting, and land use information must be independently verified by you with the appropriate local authorities before making any commitments.

    Commercial Land Development Site
    Commercial Land Development Site

    1467 Montauk Highway, Mastic, NY 11967

    $2,500/Mo
    0.55 AC lot

    Vacant commercial parcel with public water and capacity for a new building.

    View details
    Prime Land for Ground Lease
    Prime Land for Ground Lease

    550 William Floyd Parkway, Shirley, NY 11967

    $10,000/Mo
    0.46 AC lot

    20,245 sq ft land in high-traffic retail corridor.

    View details
    Corner Commercial Land
    Corner Commercial Land

    574 Montauk Highway, Shirley, NY 11967

    $1,500/Mo
    0.18 AC lot

    A compact parcel fronts a busy roadway and has public water available.

    View details
    Fenced Commercial Land
    Fenced Commercial Land

    586 Montauk Highway, Shirley, NY 11967

    $1,000/Mo
    0.18 AC lot

    Fenced vacant parcel beside a grocery and deli with cable availability and private water.

    View details

    Flanders, NY Office Spaces Lease Rates & Market Statistics

    Explore 12 Office Spaces for lease in Flanders, NY on Realmo, a commercial real estate exchange covering the Flanders area. The current inventory totals 11,606 square feet of properties — an average of ~950 SF per listing.

    Asking lease rates for Office Spaces in Flanders start at $20.27 SF/Yr, average $48.76 SF/Yr, and reach $102 SF/Yr at the top of the market. That's a 5x spread between entry-level and premium space, making side-by-side comparison of asking rents and lease terms essential. The local average of $48.76 SF/Yr is 56% above the New York state average of $31.22 SF/Yr.

    By space type, the market includes 8 office units and 3 office buildings — office buildings typically offer the lowest entry point, while office units command the highest rates.

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