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    Flex Warehouse with Office Title is generated by Realmo AI

    3520 State Route 42, Monticello, NY 12701

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    Claim this Listing
    For Sale
    $799,900

    COMMERCIAL - Monticello, NY

    Property size:
    3,700 SF
    Lot size:
    1.13 Acres
    Price / SF:
    $216/SF
    Added:
    Mar 24, 2026
    Days on Market:
    96
    Last Refresh:
    Jun 27 at 6:06 am

    Property Features for 3520 State Route 42

    General Information

    Property type
    Commercial Sale
    Property subtype
    Other
    Zoning
    AR
    Standard status
    Active
    APN
    4689-043-0-0001-033-001
    Lot size
    1.13 Acres

    Taxes and HOA fees

    Tax Year
    2025
    Tax Annual Amount
    4751

    Utilities

    Utilities
    Electricity Available
    Sewer type
    Septic Tank
    Heating system
    Oil, Forced Air
    Water source
    Well

    Building Details

    Floors in Building
    2
    Number of units
    1
    Flooring type
    Concrete
    Building materials
    Block

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    Anna Milucky

    Listing agent Anna Milucky License #10401364655

    Listing office Century 21 Country Realty 540 Broadway, Monticello, NY

    Listing date Mar 24, 2026

    MLS# 972171

    Copyright © 2026 OneKey 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

    • 50 ft x 74 ft block building on a 1.25‑acre lot with 12‑inch‑thick block walls and a 4‑foot foundation
    • 3 main bay doors plus 1 side bay door, all heavily insulated, for vehicle or equipment access
    • Approx. 3,700 SF with a large office on the ground floor and additional offices on the second floor
    • Full insulated attic adds extra storage/workspace above the main floor within the same footprint
    • Heating: oil and forced air; flooring: concrete; utilities: electricity available
    • Water source: well; sewer: septic tank

    Overview

    This block-constructed commercial building measures 50 feet by 74 feet and features 12-inch-thick block walls with a 4-foot foundation. The property includes a full insulated attic that can be used for additional storage or workspace above the main floor. Operational access is supported by three main heavily insulated bay doors on the front facade, as well as one additional side bay door on the right side of the structure.

    The building sits on a lot sized at 1.13 acres and is located at 3520 State Route 42 in Monticello, NY, within Sullivan County. The overall layout combines warehouse-style access points with office space: a large office on the bottom floor and additional offices on the second floor.

    The configuration is well suited for tenants or owners looking for a multi-purpose setup that pairs loading-capable warehouse access with dedicated office rooms. The insulated bay doors and attic storage/workspace allow the building to support uses such as vehicle or equipment storage and repair, workshops, or light industrial operations, depending on how the space is planned internally.

    Local Financial Insights For Office B

    Simulate Cap Rate and NOI

    NOI Build-Up
    Vacancy
    income lost from leasable area expected to sit empty during the year — subtracted from gross rent.
    EGI (Effective Gross Income)
    gross rent minus vacancy losses — the realistic income before paying operating costs.
    OpEx (Operating Expenses)
    recurring costs to operate the property (property tax, insurance, utilities, maintenance, management) — excludes financing and capital improvements.
    NOI (Net Operating Income)
    income a property generates after operating costs but before financing and taxes.

    Component $ $/SF
    Gross rent $88.8k $24.00
    − Vacancy −$19.5k −$5.28
    EGI $69.3k $18.72
    − OpEx −$17.3k −$4.68
    NOI $51.9k $14.04
    3,700 SF · lease $24.00/SF/yr · vacancy 22.00% · expense 25.00%

    Alternative Uses

    Best Use
    Office B
    $742.1K
    $649.4K – $865.8K (±1% cap)
    NOI $51,948 @ 7.0% cap · market cap 6.49%
    Second Best
    Flex RnD
    $725.6K
    $634.9K – $846.6K (±1% cap)
    NOI $50,794 @ 7.0% cap · market cap 6.35%
    Theoretical Best
    Office A
    $1.01M
    $888.0K – $1.18M (±1% cap)
    NOI $71,040 @ 7.0% cap · market cap 8.88%
    Zoning and permitted uses should be independently verified with local authorities.
    Property Profile Location Intelligence

    Current Use by Public Records

    Flex space

    Suggested Use

    Restaurant Auto Repair Shop Auto Parts Store Hotel & Motel Electrical Service (Bike/Boat/Book/etc) Store Restaurant Parking Lot & Garage

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

    Location Insight

    • Map
    • Local Demand
    City
    Monticello
    County
    Sullivan
    State
    New York
    Longitude
    -74.7136093
    Latitude
    41.6268961

    FAQs

    What type of property is this?
    Flex space - Block-built warehouse with multiple insulated bay doors and on-site office space for equipment, storage, or light industrial operations.
    Where is this flex space located?
    The property is located at 3520 State Route 42 Monticello, NY.
    What is the asking price?
    The asking price for this property is $799,900.
    What are key features of this property?
    This property features: 50 ft x 74 ft block building on a 1.25‑acre lot with 12‑inch‑thick block walls and a 4‑foot foundation; 3 main bay doors plus 1 side bay door, all heavily insulated, for vehicle or equipment access; Approx. 3,700 SF with a large office on the ground floor and additional offices on the second floor
    More about this property
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