Add Listing
    For Sale
    • For Sale
    • For Lease
    • Recently Sold
    • Property Lookup
    • Brokers
    Back to Search
    Residential Lots and Land Title is generated by Realmo AI

    581 Illinois AVE, San Jose, CA 95125

    View on Map
    Claim this Listing
    For Sale
    $1,188,888

    Residential Lots & Land - SAN JOSE, CA

    Added:
    Apr 15, 2026
    Days on Market:
    34
    Last Refresh:
    May 18 at 7:06 am

    Property Features for 581 Illinois AVE

    General Information

    Property type
    Land
    Property subtype
    Other
    Zoning
    R3
    Standard status
    Active

    Building Details

    Architectural style
    Other

    We can help!

    Listing Contact
    Sylvia L Leung

    Listing agent Sylvia L Leung License #01109971

    Listing office Green Earth Investments 43450 Sabercat Road, Milpitas, CA

    Listing date Apr 15, 2026

    MLS# ML82041274 Listing URL

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

    HighLights

    • Large lot with potential to build up to 4 units
    • Existing two houses (2/1 and 3/1) provide immediate rental income or can be vacated
    • Two large, finished garages offer ADU conversion potential
    • Prime location: just 5 minutes to Downtown San Jose
    • Opportunity to save development costs with existing structures
    • Ideal for contractors, investors, or homeowners seeking sweat equity

    Overview

    Located in Willow Glen, this property features a large lot with the potential to build up to 4 units. The site currently includes two houses, one with 2 bedrooms and 1 bathroom, and another with 3 bedrooms and 1 bathroom. Two large, finished garages are present, offering the possibility of conversion to Accessory Dwelling Units (ADUs). The property is fully occupied, providing the option to collect rent while planning for expansion. Situated 5 minutes from Downtown San Jose, this location offers various development opportunities.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Residential land & home ...

    Suggested Use

    Real Estate Agency Law Firm Restaurant Spa & Massage Center Dental Office Hair Salon Nail Salon Building Supply Gym & Fitness Center Daycare Center

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

    Location Insight

    • Map
    • Local Demand
    City
    San Jose
    County
    Santa Clara
    State
    California
    Longitude
    -121.8967858
    Latitude
    37.3212806

    Nearby Similar for Sale

    • $350,000
      4,838 SF

      Established Retail Dollar Store

      Well-established retail dollar store on high-visibility Alum Rock Ave.
      1972 Alum Rock AVE, SAN JOSE, CA 95116
      View Details
    • $520,000
      1,216 SF

      Versatile Commercial Condo in San Jose

      Flexible 1,216 sq ft condo in a prime San Jose location.
      2050 Concourse DR 56, SAN JOSE, CA 95131
      View Details
    • $849,999
      1,568 SF

      Move-in Ready San Jose Office Suite

      1,568 Sq Ft commercial office suite, ideal for medical/professional use.
      2114 Senter RD 6, SAN JOSE, CA 95112
      View Details
    • $848,000
      1,170 SF

      Evergreen San Jose Office Condo

      Versatile office condo in a thriving Silicon Valley location.
      1569 Lexann AVE 224, SAN JOSE, CA 95121
      View Details
    • $168,888
      1,100 SF

      Turn-Key Dental Office Opportunity

      Professionally built-out dental space in high-traffic San Jose location.
      1692 Tully RD 18, SAN JOSE, CA 95122
      View Details
    • $1,900,000
      7,863 SF

      Downtown San Jose Commercial Property

      Prime location with flexible zoning for diverse commercial uses.
      702 E Santa Clara ST 206, SAN JOSE, CA 95112
      View Details
    • $1,799,000
      1,832 SF

      San Jose Care Facility Opportunity

      Residential care home opportunity in a prime Cambrian location.
      1708 Hallmark LN, SAN JOSE, CA 95124
      View Details
    • $6,900,000
      17,036 SF

      San Jose Commercial Property Opportunity

      Commercial property near downtown San Jose, ideal for medical or school.
      480 N 1st ST, SAN JOSE, CA 95112
      View Details
    • $1,100,000
      1,352 SF

      San Jose Duplex with Income Potential

      Remodeled duplex in Silicon Valley with income potential.
      119 S 26th ST, SAN JOSE, CA 95116
      View Details
    • $1,850,000
      2,552 SF

      Spacious Updated Duplex in San Jose

      Updated duplex with spacious yards near Santana Row and Valley Fair.
      3228 Neal AVE, SAN JOSE, CA 95117
      View Details
    • $1,948,000
      3,584 SF

      Well-Maintained San Jose Fourplex

      Fourplex in desirable rental corridor with significant upgrades.
      3691 Cape Cod CT, SAN JOSE, CA 95117
      View Details
    • $998,000
      1,282 SF

      San Jose Duplex Investment Opportunity

      Well-maintained duplex in San Jose with strong cash flow.
      3350-3352 Senter Rd, San Jose, CA 95111
      View Details

    FAQs

    What type of property is this?
    Residential land & home lot - Land with two houses, potential for development up to 4 units.
    Where is this residential land & home lot located?
    The property is located at 581 Illinois AVE San Jose, CA.
    What is the asking price?
    The asking price for this property is $1,188,888.
    What are key features of this property?
    This property features: Large lot with potential to build up to 4 units; Existing two houses (2/1 and 3/1) provide immediate rental income or can be vacated; Two large, finished garages offer ADU conversion potential
    (408) 480-0933
    We can help!
    Listing Contact
    Sylvia L Leung
    Real Estate License ID: 01109971
    Learn More
    Request Owner's contact information
    Message sent successfully
    Error
    If you are the owner or broker of this property and would like to edit or remove this listing please send a message to web site administrator.
    Message sent successfully
    Error
    Email to Your Friends
    Link copied to clipboard
    Separate multiple addresses with a comma
    Message sent successfully
    Error

    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.

    More about this property
    Thanks! Your message was sent.
    Error! Your message wasn't sent.
    Please enter your name
    Please enter email
    Please enter the email in the correct format
    Please enter phone
    Please enter the number in the correct format
    Please enter message
    Thank You

    You are Unsubscribed From Notifications

    Thank You for Inquiry
    581 Illinois AVE, SAN JOSE, CA 95125
    letter with green check mark
    Check your email
    We sent you the
    agent's contact details. yellow underline
    Can't find it?
    Please check your junk/spam folder.
    Google sign-in failed. Please try again or use another login method.
    Sign Up Successful!
    You now have access to more from Realmo!