Portland, ME Duplexes for Sale

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South Portland, ME Cape Elizabeth, ME New Portland, ME Chebeague Island, ME Falmouth, ME Scarborough, ME Westbrook, ME Gorham, ME

20 properties

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Updated: May 28

SRO Conversion Opportunity

1135 Washington Avenue, Portland, ME 04103

$750,000

3,532 sqft

Built in 1966
Existing 11‑room SRO layout can support group home use
Potential to convert into a two- to three‑unit apartment configuration

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1135 Washington Avenue, Portland, ME 04103

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Est. Cap Rate

8.3%
Above avg (5.9%)
Est. NOI

$62K
Annual
Price @ 7% Cap

$892K
Above asking

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Updated: Jul 6

Mixed-Use Property Package

522-526 Washington Avenue, Portland, ME 04103

$1,140,000

5,036 sqft 0.33 AC lot

Two adjoining properties on Portland’s Washington Avenue corridor, available individually or as a package
Package includes a renovated commercial office building and a mixed‑use 2‑family with commercial space
Expansive combined parking footprint for the paired properties
Public water and public sewer hookups
Heating includes baseboard with oil; exterior siding is vinyl; flooring includes wood and vinyl; basement present

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Renovated Two-Unit Duplex

850 Washington Avenue, Portland, ME 04103

$849,000

2,184 sqft 0.53 AC lot

Turnkey two-bedroom units with in-unit laundry, separate utilities, detached garage parking, and a large backyard on a half-acre lot.

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Two-Unit Residential Income Property

75 Carleton Street, Portland, ME 04102

$990,000

2,634 sqft 0.05 AC lot

Two-unit property built in 1874, currently operating as an Airbnb with private outdoor space and off-street parking.

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Completely Renovated Two-Unit Duplex

83 Capisic Street, Portland, ME 04102

$950,000

2,432 sqft 0.48 AC lot

Turnkey duplex in Portland with two townhome-style units, renovated interiors, and brand-new systems on a large lot.

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Portland Duplex with Attic Potential

605 Washington Avenue, Portland, ME 04103

$625,000

2,612 sqft 0.16 AC lot

Investment opportunity: spacious units, attic potential, convenient location.

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Turnkey Duplex with Daylight Basements

59-61 Maggie Lane, Portland, ME 04103

$660,000

1,872 sqft 0.49 AC lot

Two townhouse-style units with updated interiors and full daylight basements offer flexible living and rental income.

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Two-Unit Residential Income Property

31 Alba Street, Portland, ME 04103

$719,000

2,424 sqft 0.11 AC lot

Well-maintained two-unit home with updated bathrooms, hardwood living spaces, backyard, off-street parking, and a two-car garage.

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Two-Unit Residential Income Duplex

240 Park Avenue, Portland, ME 04102

$750,000

2,333 sqft 0.08 AC lot

Two separately metered units with shared basement laundry offer flexible owner-occupant or investor living arrangements.

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Two-Unit Building with Parking

115 Woodford Street, Portland, ME 04103

$825,000

2,840 sqft 0.11 AC lot

Well-maintained two-unit property with a double-width driveway and four-car parking plus a usable third-floor area.

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Mixed-Use Two-Unit Building

526 Washington Avenue, Portland, ME 04103

$515,000

1,866 sqft 0.16 AC lot

Two residential units plus added commercial space with off-street parking, suited for owner-occupants or investors.

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Two-Unit Duplex with Private Backyard

29 North Street, Portland, ME 04101

$897,000

2,208 sqft 0.06 AC lot

Two-family home with heat pumps and updated exterior, offering flexible unit layouts and private outdoor space.

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Renovated New Englander Duplex

481 Danforth Street, Portland, ME 04102

$867,000

1,901 sqft 0.15 AC lot

Two-unit New Englander with extensive exterior and systems upgrades, renovated upper floors, and separate utilities for each unit.

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Two-Unit Condo with ADU Potential

1 Firefly Street, Portland, ME 04101

$679,998

965 sqft 4.04 AC lot

Modern two-unit condo with flexible ADU, ideal for investors.

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Renovated Two-Unit Duplex

850 WASHINGTON AVE, Portland, ME 04103

$849,000

2,184 sqft 0.50 AC lot

Turnkey two-bedroom units with in-unit laundry, updated systems, detached garage, and ample off-street parking on a large lot.

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Portland Mixed-Use Investment Opportunity

522-526 Washington Avenue, Portland, ME 04103

$1,140,000

5,036 sqft

Two adjoining properties with commercial and residential income potential.

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Renovated Duplex with In-Unit Laundry

850 Washington Avenue, Portland, ME 04103

$849,000

2,184 sqft

Turnkey two-unit duplex featuring updated interiors, in-unit laundry, separate utilities, and a detached 2-car garage.

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Two-Unit Residential Income Duplex

31 Alba Street, Portland, ME 04103

$719,000

2,424 sqft

Two-unit duplex features 3-bedroom layouts, hardwood living spaces, off-street parking, a two-car garage, and an unfinished attic.

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Two-Unit Residential Income Duplex

605 Washington Avenue, Portland, ME 04103

$625,000

2,612 sqft

Two 4-bedroom, 1-bath units are offered with a full basement, walk-up attic, and off-street parking on a fenced lot.

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Mixed-Use Building with Off-Street Parking

526 Washington Avenue, Portland, ME 04103

$515,000

1,866 sqft

Two-unit residential building with added commercial space and off-street parking near Roux Institute campus.

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Based on your search, we've compiled Potential Opportunities for your consideration. Besides 20 Active Listings in Portland, ME

Portland, ME Duplexes Market Trends and Statistics

Explore 20 duplexes for sale in Portland, ME, showcased through 20 active listings on our real estate platform. These investment opportunities span a total of 51,145 square feet of properties for sale, with an estimated market value of $15,913,998.

Sale prices for duplexes in Portland, ME start at $515,000, averaging $795,699, and reaching up to $1,140,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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Top Commercial Asset Segments

Commercial property segments ranked by active listings on the market

Demographics Overview

Population 119K

Population Growth (5Y) +15.6%

Median Household Income $93,177

College Educated 60.2%

High-Yield Neighborhoods for Investment

Identify Portland submarkets with the highest inventory density on the market and evaluate the average listing prices of real estate assets

Neighborhood	Average Price
04103	$798.2K
04102	$874.5K
04101	$5.5M

Taxes & Financing

Tax Rate (average for all types) 1.44%

Property Tax per SF $9.35 per SF

Tax Rate vs County Average 0.08 pp below county avg

Average Loan-to-Value 65.0%

Listings Trend

New vs delisted commercial listings in Cumberland County

New Delisted

Total CRE Inventory on Market (SF)

Average Property Price per SF

For-sale pricing trends across core commercial property types in Cumberland County

Retail

Residential Income

Property Size Breakdown

The majority of commercial real estate listings in Portland fall within the 100,000+ square foot range.

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