Two-Unit Duplex with Double
For Sale
$434,900
104 S Main Street, Auburn, ME 04210
MULTI_FAMILY - Auburn, ME
Property Size2,552 SF
Lot Size0.34 Acres
Price / SF$170.42
Days on Market29
Property Features for 104 S Main Street
General Information
Property type
Residential Multi Family
Property subtype
Other
Zoning
Urban Residential
Bathrooms
2
Full bathrooms
2
Rooms
Bathroom 2, Bathroom 1, Basement
Patio and Porch features
Porch, Deck
Interior features
Other Amenities, 1st Floor Bedroom, Bathtub
Fencing
Fenced
Basement
Walk-Out Access, Full, Unfinished
Lot features
Well Landscaped, Open, Level, Sidewalks, Intown
Standard status
Active
Size
2,552 SF
Lot size
0.34 Acres
Taxes and HOA fees
Tax Year
2025
Tax Annual Amount
4754
Utilities
Sewer type
Public Sewer
Heating system
Hot Water(Heating), Baseboard, Oil
Water source
Public
Amenities
walk-in sauna
walk-out basement
Building Details
Year built
1900
Floors in Building
2
Number of units
2
Flooring type
Hardwood, Vinyl, Laminate
Building materials
Wood Frame, Other Exterior
Roof type
Shingle
Additional Structures
Other
Listing Agency:
Keller Williams Realty
(207) 879-9800
Listed By:
Faith Fontaine
(207) 576-4179
Added: Jul 9
Changed: Aug 4
Last Checked: Aug 6 at 7:06AM
MLS# 1657524
Copyright © 2026 Maine Listings. 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.
104 S Main Street in Auburn, Maine is a two-unit duplex on a 0.34-acre double lot with additional road frontage on Fulton Street. The first-floor unit is currently vacant, offering flexibility for owner-occupancy or for choosing your own tenant. It features three bedrooms and a large eat-in kitchen, plus a unique walk-in sauna located in the bathroom.
The second-floor unit has a bright, spacious layout with a double living room, two bedrooms, a large eat-in kitchen, and abundant storage. The property also includes a large walk-out basement with convenient access to the expansive backyard. Parking options include on-site and street availability.
Additional property features include a new shingle roof, public water, and public sewer. Constructed in 1900 with wood-frame construction and heated via oil hot water baseboard, the home includes a porch and deck, fenced yard, and flooring such as laminate, hardwood, and vinyl.
The second-floor unit has a bright, spacious layout with a double living room, two bedrooms, a large eat-in kitchen, and abundant storage. The property also includes a large walk-out basement with convenient access to the expansive backyard. Parking options include on-site and street availability.
Additional property features include a new shingle roof, public water, and public sewer. Constructed in 1900 with wood-frame construction and heated via oil hot water baseboard, the home includes a porch and deck, fenced yard, and flooring such as laminate, hardwood, and vinyl.
Key Highlights
- 0.34‑acre duplex on a double lot with additional road frontage on Fulton Street
- First‑floor unit currently vacant; three bedrooms and a walk‑in sauna in the bathroom
- Second‑floor unit with double living room, two bedrooms, large eat‑in kitchen, and abundant storage
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 | $36.4k | $14.28 |
| − Vacancy | −$485 | −$0.19 |
| EGI | $36.0k | $14.09 |
| − OpEx | −$10.8k | −$4.23 |
| NOI | $25.2k | $9.86 |
2,552 SF · lease $14.28/SF/yr · vacancy 1.33% · expense 30.00%
Alternative Uses
Best Use
Multifamily LT 5
$359.6K
$314.6K – $419.5K
NOI $25,171 @ 7.0% cap · market cap 5.79%
Second Best
Apartment 5plus
$341.6K
$298.9K – $398.6K
NOI $23,915 @ 7.0% cap · market cap 5.50%
Theoretical Best
Warehouse
$4.53M
$3.97M – $5.29M
NOI $317,278 @ 7.0% cap · market cap 72.95%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Property Profile
Current Use
Lease Details
Multi-tenant
Tenancy
Yes
Highway access
Yes
Paved road access
Location Intelligence
Trade Area within ½ mile
330
Businesses Nearby
Explore this area
Business Placement
Demographics for 04210, ME
24,061
Population
11,113
Households
2.2
Avg Household Size
42
Median Age
29%
College-Educated
92%
High-School Grad
59.3 sq mi
ZIP Area
406
Density / Sq Mi
$66,552
Median Household Income
$42,624
Median Earnings
$983
Median Rent
$254,600
Median Home Value
Market
Vacancy Rate% for Multifamily in Northeast region
Questions? Ask Rey
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Frequently Asked Questions
What type of property is this?
Duplex - Two-unit duplex on a double lot with additional road frontage; the first-floor unit is currently vacant.
Where is this duplex located?
The property is located at 104 S Main Street Auburn, ME.
What is the asking price?
The asking price for this property is $434,900.
What are key features of this property?
This property features: 0.34‑acre duplex on a double lot with additional road frontage on Fulton Street; First‑floor unit currently vacant; three bedrooms and a walk‑in sauna in the bathroom; Second‑floor unit with double living room, two bedrooms, large eat‑in kitchen, and abundant storage
