521 12TH Avenue, Green Bay, WI 54303
MULTI_FAMILY - GREEN BAY, WI
- Added:
- Jun 11, 2026
- Days on Market:
- 1
- Last Refresh:
- Jun 11 at 11:06 pm
Property Features for 521 12TH Avenue
General Information
- Property type
- Residential Multi Family
- Property subtype
- Other
- Zoning
- 2 Family/Duplex
- Standard status
- Active
- APN
- 2-660
- Size
- 1,519 SF
- Lot size
- 0.09 Acres
Taxes and HOA fees
- Tax Year
- 2025
- Tax Annual Amount
- 1699
Utilities
- Sewer type
- Public Sewer
- Heating system
- Forced Air
- Water source
- Public
Building Details
- Year built
- 1903
- Number of units
- 2
- Building materials
- Vinyl Siding
Listing agent Alexander J. Young (920) 632-7702
Listing office Keller Williams Green Bay 1674 Eisenhower Road, De pere, WI (920) 632-7702
Listing date Jun 11, 2026
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.
HighLights
- West Green Bay duplex built in 1903
- Two units: main floor has 2 bedrooms and 1 bathroom; upstairs has 1 bedroom and 1 bathroom
- Heating: forced air
- Exterior: vinyl siding
- Utilities: public water and public sewer
Overview
Located at 521 12TH Avenue in Green Bay, Wisconsin (Brown County), the duplex is presented as being minutes from shopping, restaurants, and downtown Green Bay. Showings require 24-hour notice, and prospective buyers should plan accordingly when scheduling an in-person tour.
The unit mix can be practical for tenants seeking different layouts within the same building, with a larger main-floor arrangement and a smaller upstairs configuration. For an owner-occupant, the property also provides the option of living in one unit while renting the other, depending on your personal goals and how you choose to manage the property. For investors, the straightforward two-unit structure aligns with a residential income strategy focused on maintaining two rentable spaces under one roof.
Local Financial Insights For Multifamily LT 5
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 | $20.1k | $13.20 |
| − Vacancy | −$1.1k | −$0.73 |
| EGI | $18.9k | $12.47 |
| − OpEx | −$5.7k | −$3.74 |
| NOI | $13.3k | $8.73 |
Alternative Uses
Current Use by Public Records
Location Insight
- Map
- Local Demand
- City
- Green Bay
- County
- Brown
- State
- Wisconsin
- Longitude
- -88.035089
- Latitude
- 44.514733
