Beautifully Renovated 3-Bedroom Apartment in Prime Union Square Location.
Welcome home to this renovated top-floor (third-floor) 3-bedroom, 1-bathroom apartment in a well-maintained multi-family home, ideally located in Union Square just minutes from the Green Line T.
This inviting apartment features a comfortable living room and three well-proportioned bedrooms, each offering a closet for convenient storage. The renovated kitchen is equipped with stainless steel appliances, a dishwasher, granite countertops, and a gas range-perfect for everyday cooking and entertaining.
Additional highlights include: Hardwood floors throughout. Gas heating. Water included in the rent. Free laundry in the basement. Large shared patio-great for relaxing or enjoying the outdoors. Convenient Union Square location with easy access to public transportation, shops, restaurants, and cafes. Pets welcome.
A fantastic opportunity to enjoy a renovated home in one of the area's most desirable and convenient neighbo.
48 days on RentalSource
RentalSource last checked: 4 hours ago · Listing updated: October 25, 2026
This 3-bedroom, 1-bathroom apartment at 21 Rossmore St #3 in Somerville, MA 02143 rents for $3,100 a month. It is pet friendly. 21 Rossmore St #3 was advertised by Sushil Singh on September 10, 2026.
How the Rent Compares
At $3,100 a month, this apartment is below the typical rent for 3-bedroom apartments and condos in Somerville (about $4,100).
Typical $4,100This home $3,100
$4,600
From 56 three-bedroom apartments and condos listed in Somerville on RentalSource in October 2026: the scale holds eight in ten of them, and the shaded band the middle half.
$4,100Typical rent for 3-bedroom apartments and condos in Somerville
The rent hasn't changed since it was listed on September 10. This home was last listed for rent on RentalSource from July to August 2025 for $3,600. Today's rent is $500 lower.
Rent history for this home, newest first
Date
Event
Rent
Change
September 10, 2026
Listed for rent
$3,100−13.9%
−13.9%
August 26, 2025
Listing removed
$3,600
July 9, 2025
Listed for rent
$3,600+2.9%
+2.9%
August 21, 2022
Listing removed
$3,500
April 23, 2022
Listing removed
$3,350
These are listed prices. What renters actually paid may have been different.
Affordability Calculator
Can I afford to live at 21 Rossmore St #3?
Bedrooms
3 bedrooms
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Move the slider to select the percentage of your monthly income you're comfortable spending on rent. Typically, it's advised to spend about 30% or less on housing.
Recommended income
$124,000 /year
With your chosen rent-to-income ratio, an annual income of $124,000 is recommended to comfortably afford this 3-bedroom rental priced at $3,100 per month.
