Sign Up Successful!
You now have access to more from Realmo!
    For Sale
    • For Sale
    • For Lease
    • Recently Sold
    • Property Lookup
    • Brokers
    AI Search
    Back to Search
    The Largest CRE Database in the US with Over 1 Million Listings

    512 E Main St Waukesha, WI 53186

    Sponsored
    For Sale
    $299,900

    Duplex/2 Story - Waukesha, WI

    Lot size:
    0.22 Acres
    Days on Market:
    11
    Last Refresh:
    Jan 25 at 3:06 pm

    Property Features for 512 E Main St

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Other
    Standard status
    Active
    Zoning
    RM-3
    Rooms
    Bathroom 1, Bathroom 2, Bedroom 1, Bedroom 2, Bedroom 3, Bedroom 4, Bedroom 5
    Bedrooms
    5
    Bathrooms
    2
    APN
    2911302385
    Parking features
    Driveway
    Appliances
    None
    Lot size
    0.22 Acres

    Building Details

    Year built
    1900
    Floors in Building
    2
    Building materials
    Other
    Architectural style
    Other

    We can help!

    Listing Contact
    Holly T Speranza

    Juniper Real Estate LLC dba Keller Williams Realty Milwaukee North Shore (414) 962-3605

    Listing agent Holly T Speranza (414) 962-3605 License #56826-90

    Listing date Jan 15, 2026

    MLS# 1947455 Listing URL

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

    Learn more

    Property Insight Report

    Overview

    Waukesha Duplex: Investment Opportunity

    This recently refreshed duplex in Waukesha offers a strong investment opportunity with immediate cash flow. The property features two units. The lower unit includes two bedrooms, a full bathroom, a kitchen, a living room, and a dining room. The upper unit offers three bedrooms, a full bathroom, a kitchen, and a living room. Both units are currently rented at $1,100 per month. Updates include a newer roof, siding, paint, electrical improvements, and updated bathrooms. The property is located a couple of blocks from Frame Park, the Fox River, and downtown Waukesha dining, shopping, and entertainment. The property is zoned RM-3 and sits on a 0.22-acre lot.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Duplexes

    Suggested Use

    Realty agency Law Firm Restaurant Spa & Massage Dental Office Hair Salon Nail Salon Clothing Store Building Supply Gym & Fitness

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

    Location Insight

    • Map
    • Local Demand
    City
    Waukesha
    County
    Waukesha
    State
    Wisconsin
    Longitude
    -88.222258
    Latitude
    43.014892

    Nearby Similar for Sale

    • $450,000
      13,680 SF

      Waukesha Office Building For Sale

      13,680 sq ft office building in downtown Waukesha.
      137 Wisconsin Ave, Waukesha, WI 53186
      View Details
    • $500,000
      0.26 Acres

      Waukesha Four-Family with Garage

      Four-family property with a four-car garage in Waukesha, Wisconsin.
      340 Frame Ave, Waukesha, WI 53186
      View Details
    • $1,295,000
      4,320 SF

      Turnkey Car Wash Business Opportunity

      Fully operational car wash business with high-traffic visibility in Waukesha.
      169 NW Barstow St, Waukesha, WI 53188
      View Details
    • $429,000
      0.57 Acres

      Waukesha Duplex: Investment Opportunity

      Well-maintained Waukesha duplex with month-to-month tenants and recent updates.
      1542 Whiterock Ave, Waukesha, WI 53186
      View Details
    • $1,750,000
      1 SF

      Restaurant Property in High-Traffic Area

      Restaurant property with drive-thru, patio, and high visibility.
      2423 Kossow Rd, Vernon, WI 53186
      View Details
    • Contact for pricing

      Waukesha Retail Strip Center

      100% occupied retail strip center in affluent Milwaukee suburb.
      120 E Sunset Dr, Waukesha, WI 53186
      View Details
    • $675,000
      6,000 SF

      High-Visibility Commercial Property For Sale

      Commercial property with updated systems, ideal for various business uses.
      1344 Whiterock Ave, Waukesha, WI 53186
      View Details
    • $650,000
      4,688 SF

      Corner Lot on Saint Paul

      Corner lot with high visibility and redevelopment potential.
      1800 W St Paul Ave, Waukesha, WI
      View Details
    • Contact for pricing
      25,070 SF

      Waukesha Retail Complex For Sale

      25,070 SF retail complex in Waukesha County market.
      2140 W St Paul Ave, Waukesha, WI
      View Details
    • $189,000
      1,152 SF

      Spacious Condo with Garage

      Two-bedroom condo with two bathrooms, garage, and balcony.
      2067 Cliff Alex Ct S, Waukesha, WI 53189
      View Details
    • Contact for pricing

      Prime Retail Outparcel Opportunity

      Highly visible retail outparcel adjacent to Sendik's in Waukesha.
      601 Meadowbrook Rd, Waukesha, WI 54318
      View Details
    • $379,900
      1,209 SF

      Low-Maintenance Condo Near Amenities

      Comfortable condo with no HOA fees, close to amenities.
      2759 Sandra Ln, Waukesha, WI 53188
      View Details

    FAQs

    What type of property is this?
    Duplex - Spacious, updated duplex in Waukesha with immediate cash flow.
    Where is this duplex located?
    The property is located at 512 E Main St Waukesha, WI.
    What is the asking price?
    The asking price for this property is $299,900.
    What are key features of this property?
    This property features: - Immediate cash flow from two rented units at $1,100/month each.; - Prime location near Frame Park, Fox River, and downtown Waukesha.; - Recently refreshed with updates including newer roof, siding, paint, electrical, and bathrooms.
    (414) 962-3605
    Request Owner's contact information
    512 E Main St Waukesha, WI 53186
    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.
    512 E Main St
    Waukesha, WI 53186
    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
    512 E Main St Waukesha, WI 53186
    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

    We can help!
    Listing Contact
    Holly T Speranza
    Real Estate License ID: 56826-90
    (414) 962-3605
    Learn more
    Google sign-in failed. Please try again or use another login method.
    Create New Password
    • At least 8 characters
    • Contains both letters and numbers
    • Contains uppercase and lowercase letters
    • At most 32 characters
    • Password required
    • Password reset link has expired. Please request a new one.