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$999,990
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Property Description
Exceptional multifamily investment opportunity in the heart of Rockland. 100 Union Street is an eight-unit apartment building comprised of seven one-bedroom units and one two-bedroom unit, ideally situated just moments from downtown Rockland's thriving waterfront, restaurants, retail, and employment centers. The property features attractive, well-maintained renovated units with numerous updates, offering investors a stable asset in one of Midcoast Maine's strongest and most desirable rental markets. Current rents provide the opportunity for future growth, allowing investors to realize additional value through strategic rent increases while benefiting from existing cash flow. Located in a highly walkable neighborhood with strong tenant demand, 100 Union Street offers an appealing combination of location, quality, and upside potential. The property's proximity to downtown amenities, healthcare services, and major employers continues to support long-term occupancy and rental growth. 100 Union Street is being offered as part of a larger three-building, 27 unit, Rockland multifamily portfolio, with all properties located in close proximity to one another. Investors have the opportunity to acquire an individual asset or pursue additional scale through the portfolio offering. A rare opportunity to acquire a well-positioned multifamily property in a supply-constrained market with both immediate income and long-term upside.
Full Property Details
Full Property Details for 100 Union St
General
- Price: $999,990
- Taxes: $12,012 (2025)
- Status: Active
- Type: Multi-Family
- Source: MREIS
- MLS ID: 1667181
- Updated: 8/13/2026
- Added to Site: 75 day(s) ago
Interior
- Flooring: Wood
Rooms
Bathrooms
- Total Bathrooms: 8
- Full Bathrooms: 8
Parking
- Attached garage: Yes
- Parking Features: Paved, 5 - 10 Spaces
Location
- County: Knox
Heating & Cooling
- Central air: Yes
- Air Conditioning: Yes
- Cooling Type: Central Air Conditioning
- Heating Type: Oil, Hot Water
Structural Information
- Architectural Style: Other
- Construction: Wood Frame, Composition, Vinyl Siding
- Basement: Yes
- Basement Desc.: Exterior Entry, None
- Roof: Composition, Other
- Square Feet: 7,324
- Finished Total: 7,324 Sq. Ft.
- Finished Above Grnd: 7,324 Sq. Ft.
- Year Built: 1860
Lot Features
- Lot Size (Acres): 0.18
- Lot Size (Sq. Ft.): 7,840.8
- Lot Description: Business District, Intown, Open Lot
Financial Considerations
- Operating Expenses: $30,646
- Tax Amount: $12,012
- Tax Year: 2025
Disclosures and Reports
- Lot Number: 13
Listed by Keller Williams Realty (207) 879-9800
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Schools
Schools serving 100 Union St
School District:Regional School Unit 13
| Name | Grades | Distance |
|---|---|---|
South School 30 Broadway, Rockland, ME 04841 | K-5 | 0.8 mi |
Oceanside Middle School 47 Valley Street, Thomaston, ME 04861 | 6-8 | 4.1 mi |
Oceanside High School 400 Broadway, Rockland, ME 04841 | 9-12 | 0.7 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 100 Union St
Date
Details
Price
Change
Source
6/14/2026
Listed
$999,990
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Tax History
Tax History for 100 Union St
Year
Property Taxes
Change
Tax Assessment
Change
2025
$12,012
14%
$724,500
69%
2024
$10,497
1%
$428,800
—
2023
$10,407
—
$428,800
—
2022
$10,407
7%
$428,800
—
2021
$9,691
1%
$428,800
—
2020
$9,562
27%
$428,800
41%
2019
$7,547
17%
$304,800
9%
2018
$6,460
4%
$279,900
—
2017
$6,236
3%
$279,900
—
2016
$6,079
2%
$279,900
—
2015
$5,934
5%
$279,900
—
2014
$5,643
3%
$279,900
—
2013
$5,464
—
$279,900
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 100 Union St
100 Union Street, Rockland, ME 04841 (MLS# 1667181) is a Multi-Family property with 8 units containing 0 bedrooms and 8 full bathrooms. 100 Union Street is currently listed for $999,990 and was received on June 14, 2026. Want to learn more about 100 Union Street? Do you have questions about finding other Multi-Family real estate for sale in Rockland? You can browse all Rockland real estate or contact a Coldwell Banker agent to request more information.

