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    • Prospect Union Square

    50 Prospect St, Somerville, MA 02143

    Apartment building
    Studio-2 beds
    Pet-friendly
    Covered parking
    Shared laundry

    What’s available

    Price may not include required fees and charges.
    Studio, 1 ba
    $2,926
    429 sqft

    1 unit available Sep 6

    Studio, 1 ba
    $2,972
    416 sqft

    1 unit available Sep 22

    Studio, 1 ba
    $3,027
    450 sqft

    1 unit available Oct 21

    Studio, 1 ba
    $3,098-3,414
    491 sqft

    1 unit avail. now | 1 avail. Oct 23

    Price: $3,098Available: Available Oct 23 2025Unit: Unit 605
    Price: $3,414Available: Available NowUnit: Unit 2405
    1 bd, 1 ba
    $3,429
    569 sqft

    1 unit available now

    1 bd, 1 ba
    $3,522
    530 sqft

    1 unit available Sep 13

    1 bd, 1 ba
    $3,533-3,823
    534 sqft

    1 unit avail. Sep 4 | 1 unit avail. Sep 18

    Price: $3,533Available: Available Sep 18 2025Unit: Unit 424
    Price: $3,823Available: Available Sep 4 2025Unit: Unit 324
    1 bd, 1 ba
    $3,575-3,715
    576 sqft

    1 unit avail. Sep 11 | 1 unit avail. Oct 7

    Price: $3,575Available: Available Sep 11 2025Unit: Unit 447
    Price: $3,715Available: Available Oct 7 2025Unit: Unit 341
    1 bd, 1 ba
    $4,210-4,230
    751 sqft

    1 unit avail. Sep 21 | 1 unit avail. Oct 26

    Price: $4,210Available: Available Oct 26 2025Unit: Unit 1513
    Price: $4,230Available: Available Sep 21 2025Unit: Unit 1713
    1 bd, 1 ba
    $4,558
    749 sqft

    1 unit available Sep 5

    2 bd, 2 ba
    $5,047
    913 sqft

    1 unit available Sep 21

    2 bd, 2 ba
    $5,271
    867 sqft

    1 unit available Sep 25

    2 bd, 2 ba
    $5,311-5,351
    847 sqft

    1 unit avail. Sep 17 | 1 unit avail. Oct 10

    Price: $5,311Available: Available Oct 10 2025Unit: Unit 1906
    Price: $5,351Available: Available Sep 17 2025Unit: Unit 2306

    What's special

    Clubhouse
    Get the party started
    This building features a clubhouse. Only 3% of buildings in Somerville have this amenity.
    The more you look, the more you will find. Discover Prospect Union Square - a brand new apartment living community arriving right on the Green line. Featuring incredible views, lush amenities, and cozy community spaces, Prospect offers innovative apartment homes settled within a colorful neighborhood that's ready to be explored. The price shown reflects Base Rent only. Residents are responsible for additional required fees, including but not limited to an application fee, security deposit, community amenity fee, and utility charges. These fees are assessed per applicant or per unit as applicable and may vary based on usage or lease terms. Please consult a leasing agent for a comprehensive list of all required, optional, and situational fees.

    Office hours

    DayOpen hours
    Mon:9 am - 6 pm
    Tue:9 am - 6 pm
    Wed:9 am - 6 pm
    Thu:9 am - 6 pm
    Fri:9 am - 5 pm
    Sat:10 am - 5 pm
    Sun:12 pm - 5 pm

    Property map

    Tap on any highlighted unit to view details on availability and pricing

    Use ctrl + scroll to zoom the map

    Facts, features & policies

    Building Amenities

    Accessibility
    • Disabled Access: WheelChair
    Community Rooms
    • Business Center
    • Club House
    • Conference Room
    • Fitness Center
    Other
    • Shared: Laundry
    • Swimming Pool: Pool
    Outdoor common areas
    • Deck: Amenity Deck Access
    Security
    • Controlled Access
    Services & facilities
    • Elevator
    • On-Site Maintenance: OnSiteMaintenance
    • On-Site Management: OnSiteManagement
    • Package Service: PackageReceiving
    • Spanish Speaking Staff
    • Storage Space

    Unit Features

    Appliances
    • Garbage Disposal: Disposal
    • Microwave Oven: Microwave
    • Range
    • Refrigerator
    Cooling
    • Air Conditioning: AirConditioner
    Flooring
    • Tile: TileFlooring
    • Vinyl: VinylFlooring
    Internet/Satellite
    • Cable TV Ready: Cable
    • High-speed Internet Ready: HighSpeed
    Other
    • Bar Building
    • Courtyard View
    • High Ceilings
    • Large Closets
    • Pantry
    • Tower Building

    Policies

    Pets
    Dogs
    • Allowed
    • 2 pet max
    • $75 monthly pet fee
    • Breed Restrictions Apply
    Cats
    • Allowed
    • 2 pet max
    • $50 monthly pet fee
    Parking
    • covered: CoverPark
    • Garage
    • None
    Smoking
    • This is a smoke free building

    Special Features

    • Availability 24 Hours
    • Concierge
    • Dog Run And Pet Spa
    • Recycling
    • Wireless Internet

    Neighborhood: Union Square

    Areas of interest

    Use our interactive map to explore the neighborhood and see how it matches your interests.

    Travel times

    Walk, Transit & Bike Scores

    98 / 100
    Walker's Paradise
    82 / 100
    Excellent Transit
    100 / 100
    Biker's Paradise

    Nearby schools in Somerville

    GreatSchools rating

    Frequently asked questions

    What is the walk score of Prospect Union Square?

    Prospect Union Square has a walk score of 98, it's a walker's paradise.

    What is the transit score of Prospect Union Square?

    Prospect Union Square has a transit score of 82, it has excellent transit.

    What schools are assigned to Prospect Union Square?

    The schools assigned to Prospect Union Square include Capuano Early Childhood Center, Albert F. Argenziano School At Lincoln Park, and Somerville High School.

    Does Prospect Union Square have in-unit laundry?

    No, but Prospect Union Square has shared building laundry.

    What neighborhood is Prospect Union Square in?

    Prospect Union Square is in the Union Square neighborhood in Somerville, MA.

    What are Prospect Union Square's policies on pets?

    A maximum of 2 dogs are allowed per unit. This building has monthly fee of $75 for dogs. A maximum of 2 cats are allowed per unit. This building has monthly fee of $50 for cats.