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Side-by-Side Duplex
For Sale
$299,900

517 MAYVILLE Street, Theresa, WI 53091

Residential Income, THERESA, WI

Property Size2,628 SF
Lot Size0.29 Acres
Price / SF$114.12
Days on Market31

Property Features for 517 MAYVILLE Street

General Information

Property type Residential Multi Family
Property subtype Duplex
Zoning Residential
Parking 2
Elementary school district Lomira
Middle school district Lomira
High school district Lomira
Directions N Milwaukee St, West on Mayville St to address
Standard status Active
APN 186-1217-1033-003
Size 2,628 SF
Lot size 0.29 Acres

Taxes and HOA fees

Tax Year 2025
Tax Annual Amount 3073

Utilities

Sewer type Public Sewer
Heating system Forced Air
Cooling system Central Air
Water source Public

Amenities

large yard

Building Details

Year built 1975
Number of units 2
Building materials Vinyl Siding
Listing Agency: RE/MAX Heritage · RE/MAX International
Listed By: Gus Garcia · License #9477325
Added: Aug 5 Changed: Sep 3 Last Checked: Sep 4 at 8:06PM
MLS# 50330441

Copyright © 2026 Realtor Association of Northeast Wisconsin. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

Investment Insights

Based on property information with market context.

This side-by-side duplex contains 2,628 square feet across two residential units. Each unit includes 3 bedrooms and 1.5 baths, with more than 1,100 square feet of living area, a private 1-car garage, and access to a shared yard. Both residences are currently occupied under month-to-month arrangements.

Constructed in 1975, the property has vinyl siding, forced-air heating, central air, public water, and public sewer. Residential zoning supports its existing duplex use, while the two-unit layout provides distinct living quarters within one building.

Key Highlights

  • Two‑unit side‑by‑side duplex with 2,628 square feet
  • Each unit offers 3 bedrooms, 1.5 baths, and more than 1,100 square feet
  • Private 1‑car garage assigned to each unit

Financial Insights

Estimated NOI and Cap Rate

NOI = area × lease_rate × (100 − vacancy) / 100 × (1 − expense_ratio). Net Operating Income — what the owner takes home each year before mortgage payments and income tax. Effective rent (asking rent minus vacancy losses) minus operating costs (taxes, insurance, maintenance, management).
NOI / Yr
$23,477
Cap rate = NOI / list price × 100. Capitalization rate — annual return on a fully cash purchase, before financing. NOI divided by price. Higher means more income per dollar invested, but usually also more risk or older condition. 5–8% is typical for stabilized commercial property; double digits often signal distressed deals.
Cap Rate
7.83%
Suggested Prices Based on Cap Rates Cap rates vary significantly by property type, market, and asset quality. Typical U.S. stable-market ranges: Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+) Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand) Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically) Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher) Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk) Self-Storage — 5.5% to 7.5% Medical Office — 6.0% to 7.5% Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term Rules of thumb: Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%). Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C. Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI. Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$469,540 $469.5K
Cap Rate 7%
$335,386 $335.4K
Cap Rate 9%
$260,856 $260.9K
Market Conditions
NOI Build-Up for 2,628 SF 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.
Gross rent
$34.7K $13.20/SF
− Vacancy
−$1.2K −$0.44/SF
EGI
$33.5K $12.76/SF
− OpEx
−$10.1K −$3.83/SF
NOI
$23.5K $8.93/SF
Area
Dodge County, WI
Vacancy
3.32%
Lease Rate
$13.20 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates Cap rates vary significantly by property type, market, and asset quality. Typical U.S. stable-market ranges: Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+) Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand) Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically) Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher) Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk) Self-Storage — 5.5% to 7.5% Medical Office — 6.0% to 7.5% Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term Rules of thumb: Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%). Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C. Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI. Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$469,540
Cap Rate 7%
$335,386
Cap Rate 9%
$260,856

Alternative Uses

Best Use
Multifamily LT 5
$335.4K
$293.5K – $391.3K (±1% cap)
NOI $23,477 @ 7.0% cap · market cap 7.83%
Second Best
Apartment 5plus
$310.8K
$272.0K – $362.7K (±1% cap)
NOI $21,759 @ 7.0% cap · market cap 7.26%
Theoretical Best
Office A
$570.9K
$499.5K – $666.0K (±1% cap)
NOI $39,962 @ 7.0% cap · market cap 13.33%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Duplexes

Suggested Use

Top Pick Dental Office Electrical Service Bakery Auto Repair Shop (Bike/Boat/Book/etc) Store Grocery & Convenience Store

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

2
Residential units

Location Intelligence

Trade Area within ½ mile

78
Businesses Nearby

Demographics for 53091, WI

2,013
Population
918
Households
2.2
Avg Household Size
46
Median Age
17%
College-Educated
94%
High-School Grad
25.7 sq mi
ZIP Area
78
Density / Sq Mi
$81,442
Median Household Income
$47,902
Median Earnings
$1,013
Median Rent
$195,800
Median Home Value

Market

Vacancy Rate% for Multifamily in Midwest region

6.5% 2022
7.5% 2023
7.8% 2024
8% 2025
Rey
Questions? Ask Rey
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Frequently Asked Questions

What type of property is this?
Duplex - Two residential units provide separate living spaces, private garages, and shared outdoor area in a duplex configuration.
Where is this duplex located?
The property is located at 517 MAYVILLE Street Theresa, 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: Two‑unit side‑by‑side duplex with 2,628 square feet; Each unit offers 3 bedrooms, 1.5 baths, and more than 1,100 square feet; Private 1‑car garage assigned to each unit
More about this property
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