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Two-Unit Duplex on Double Lot

104 S Main Street Auburn, ME 04210

104 S Main Street, Auburn, ME, 04210
$439,900
For Sale
Claim this Listing
$439,900

Two-unit duplex with a new roof, walk-out basement, and double lot with additional road frontage.

Property Size2,552 SF
Price / SF$172.37
AddedApr 5
Days on Market103
Last RefreshJul 15 at 11:15 pm

Property Features for 104 S Main Street

General Information

Standard status
Active
Size
2,552 SF
Property subtype
Multi-family

Building Details

Year Built
1900

Listing office Keller Williams Realty

Listing date Apr 5, 2026

Source Greatislandrealty

Displayed information is deemed reliable but is not guaranteed and should be independently verified.

All listing content including descriptions, pricing, images are the copyrighted material of Keller Williams Realty


Investment Insights

Based on property information with market context.

104 S Main Street in Auburn, ME presents a spacious, well-maintained two-unit duplex configured as a first-floor and second-floor residence on a double lot. The first-floor unit is currently vacant and features three bedrooms and a large eat-in kitchen, along with a walk-in sauna located in the bathroom. The second-floor unit offers a bright layout with a double living room, two bedrooms, a large eat-in kitchen, and abundant storage throughout. Additional improvements include a new roof, and the property includes a large walk-out basement that provides direct access to the expansive backyard, along with parking options including on-site and street availability.

The property is set “intown” and benefits from additional road frontage on Fulton Street, providing flexibility for access and future use of the outdoor area. The listing also notes convenient proximity to schools, shopping, restaurants, the turnpike, and other local amenities.

This building can suit investors seeking a two-unit rental property with the advantage of a currently vacant first-floor unit, as well as owner-occupants who prefer the ability to live in one unit while using the other for rental income. With ample yard space, multiple bedrooms across both units, and straightforward basement access to the outdoors, the duplex offers practical space and day-to-day livability for a range of tenant and owner scenarios.

Key Highlights

  • Two‑unit property on a double lot with additional road frontage on Fulton Street
  • First‑floor unit has 3 bedrooms and a large eat‑in kitchen; currently vacant for owner occupancy or tenant selection
  • Second‑floor unit features a double living room, 2 bedrooms, a large eat‑in kitchen, and abundant storage

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 $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 (±1% cap)
NOI $25,171 @ 7.0% cap · market cap 5.72%
Second Best
Apartment 5plus
$341.6K
$298.9K – $398.6K (±1% cap)
NOI $23,915 @ 7.0% cap · market cap 5.44%
Theoretical Best
Warehouse
$4.53M
$3.97M – $5.29M (±1% cap)
NOI $317,278 @ 7.0% cap · market cap 72.13%
Zoning and permitted uses should be independently verified with local authorities.

Property Analytics

Property Profile Location Intelligence

Current Use by Public Records

Duplexes

Suggested Use

HVAC Service Garden Center (Bike/Boat/Book/etc) Store Locksmith Storage Facility Butcher Tech Support Center Pet Grooming Service (Bike/Boat/Book/etc) Store Florist

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

FAQs

What type of property is this?
Duplex - Two-unit duplex with a new roof, walk-out basement, and double lot with additional road frontage.
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 $439,900.
What are key features of this property?
This property features: Two‑unit property on a double lot with additional road frontage on Fulton Street; First‑floor unit has 3 bedrooms and a large eat‑in kitchen; currently vacant for owner occupancy or tenant selection; Second‑floor unit features a double living room, 2 bedrooms, a large eat‑in kitchen, and abundant storage
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