Prospect Union Square

Starting at $2,885

50 Prospect St

Somerville, MA 02143 Prospect Hill Neighborhood
Studio-3 Beds
1-2 Baths
405+ Sq Ft

About Prospect Union Square

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.

Listing Provided By

Pricing and Floor Plans

The total monthly price shown includes only the required fees. Additional fees may still apply to your rent. Use the rental calculator to estimate all potential associated costs.

Studio

Studio-B-S2

$2,885-$5,583 total monthly price

Studio, 1 Bath, 460 Sq Ft

https://imagescdn.homes.com/i2/HRHkyfzv0bkNCk5PvJNNiZeEIUqBxt6KFrepxyZSc1I/116/prospect-union-square-somerville-ma.png?t=p&p=1
Studio-B-S2 Floor Plan
2 Available Units
Unit Price Sq Ft Availability
0348 $3,105 460 Now
0648 $2,885 460 Jan 29, 2026

Studio-T-S3

$2,910-$5,242 total monthly price

Studio, 1 Bath, 450 Sq Ft

https://imagescdn.homes.com/i2/Lzyf6rzfvKB8Bf3oytwpoHInS4OpO6Ke20km9zBwr6A/116/prospect-union-square-somerville-ma-2.png?t=p&p=1
Studio-T-S3 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
0312 $2,910 450 Now

Studio-T-S1

$3,092-$5,307 total monthly price

Studio, 1 Bath, 432 Sq Ft

https://imagescdn.homes.com/i2/AukJmvkrPa8VtqJwgx9lDM6CDD50yfzBN2yGD6kOtYM/116/prospect-union-square-somerville-ma-22.png?p=1
Studio-T-S1 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
2307 $3,092 432 Jan 21, 2026

Studio-T-S5

$3,103-$5,580 total monthly price

Studio, 1 Bath, 453 Sq Ft

https://imagescdn.homes.com/i2/Xw5skrHTLdhOzenJLjHeIYH3TJrhel5N-Jh1wpEeNHA/116/prospect-union-square-somerville-ma-12.png?t=p&p=1
Studio-T-S5 Floor Plan
2 Available Units
Unit Price Sq Ft Availability
1203 $3,103 453 Nov 26
1803 $3,163 453 Dec 23

Studio-T-S2

$3,109-$5,643 total monthly price

Studio, 1 Bath, 429 Sq Ft

https://imagescdn.homes.com/i2/zW_wl8dIRsccS1MoPxxVyTL1QkyuUyvpdKpYD7HrmHk/116/prospect-union-square-somerville-ma-3.png?p=1
Studio-T-S2 Floor Plan
2 Available Units
Unit Price Sq Ft Availability
2308 $3,139 429 Now
2008 $3,109 429 Jan 7, 2026

Studio-T-S6

$3,241-$5,829 total monthly price

Studio, 1 Bath, 491 Sq Ft

https://imagescdn.homes.com/i2/2jfSy9v-P5zoOSp5emIqPL8WmUYHy_fw7dFAxs2LYMg/116/prospect-union-square-somerville-ma-4.png?t=p&p=1
Studio-T-S6 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
2205 $3,241 491 Now

1 Bedroom

1 Bed/1 Bath-T-A7

$3,290-$6,589 total monthly price

1 Bed, 1 Bath, 544 Sq Ft

https://imagescdn.homes.com/i2/h_RC48pdew1VmpQ9YeWdC5PZUFeNIdLSs33ifGqNoHI/116/prospect-union-square-somerville-ma-5.png?t=p&p=1
1 Bed/1 Bath-T-A7 Floor Plan
2 Available Units
Unit Price Sq Ft Availability
2414 $3,290 544 Now
2314 $3,532 544 Jan 9, 2026

1 Bed/1 Bath-B-A6

$3,355-$6,261 total monthly price

1 Bed, 1 Bath, 557 Sq Ft

https://imagescdn.homes.com/i2/WEmy0fSQmpdsLNam6_DJEL1THGmlrKzkCIrD2UAwzyg/116/prospect-union-square-somerville-ma-20.png?t=p&p=1
1 Bed/1 Bath-B-A6 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
0435 $3,355 557 Jan 12, 2026

1 Bed/1 Bath-B-A10

$3,374-$6,095 total monthly price

1 Bed, 1 Bath, 576 Sq Ft

https://imagescdn.homes.com/i2/jIzmwdDMrHLnuW9SLFo-ZZwGXvQGypOdm_AN3p4bxP4/116/prospect-union-square-somerville-ma-6.png?t=p&p=1
1 Bed/1 Bath-B-A10 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
0447 $3,374 576 Now

1 Bed/1 Bath-B-A12

$3,425-$6,398 total monthly price

1 Bed, 1 Bath, 582 Sq Ft

https://imagescdn.homes.com/i2/r1d5bp9FTDtfs5XNHhAzyF9NLwX90BV7mQ3lK44qjFs/116/prospect-union-square-somerville-ma-17.png?t=p&p=1
1 Bed/1 Bath-B-A12 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
0630 $3,425 582 Dec 27

1 Bed/1 Bath-B-A11

$3,445-$6,428 total monthly price

1 Bed, 1 Bath, 577 Sq Ft

https://imagescdn.homes.com/i2/SCg675gWjirqiRLN65ytiXFWccfzkuzInGDItL4x43A/116/prospect-union-square-somerville-ma-13.png?t=p&p=1
1 Bed/1 Bath-B-A11 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
0642 $3,445 577 Dec 5

1 Bed/1 Bath-T-A4

$3,458-$6,458 total monthly price

1 Bed, 1 Bath, 540 Sq Ft

https://imagescdn.homes.com/i2/fgbcIGnFea3oeS_W9siiQWqhJyySrrvH16oPQfUeOII/116/prospect-union-square-somerville-ma-21.png?p=1
1 Bed/1 Bath-T-A4 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
2101 $3,458 540 Jan 16, 2026

1 Bed/1 Bath-T-A5

$3,562-$6,644 total monthly price

1 Bed, 1 Bath, 524 Sq Ft

https://imagescdn.homes.com/i2/l5IrKHxQzbwiHaa01_JGHHruNMA0Y07TQTdTpkvYZAs/116/prospect-union-square-somerville-ma-14.png?t=p&p=1
1 Bed/1 Bath-T-A5 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
2304 $3,562 524 Dec 7

1 Bed/1 Bath-B-A5

$3,622-$6,537 total monthly price

1 Bed, 1 Bath, 534 Sq Ft

https://imagescdn.homes.com/i2/dgCJ0MsPUskSWCqpYLxOnjvXfCzE8rmOTWjR_AlJgl0/116/prospect-union-square-somerville-ma-7.png?t=p&p=1
1 Bed/1 Bath-B-A5 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
0324 $3,622 534 Now

1 Bed/1 Bath Den-T-AD2

$3,941-$7,418 total monthly price

1 Bed, 1 Bath, 751 Sq Ft

https://imagescdn.homes.com/i2/knZBOXJE8fYw8uuuVJ51Be86VmybKkkmjqLzkdN9AlU/116/prospect-union-square-somerville-ma-8.png?t=p&p=1
1 Bed/1 Bath Den-T-AD2 Floor Plan
3 Available Units
Unit Price Sq Ft Availability
1413 $3,941 751 Now
1713 $3,971 751 Now
1813 $3,981 751 Jan 16, 2026

1 Bed/1 Bath Den-T-AD1

$4,146-$7,480 total monthly price

1 Bed, 1 Bath, 749 Sq Ft

https://imagescdn.homes.com/i2/K82YnXIDnzalYS7aFWITUBgJbS1S1eGGzkqdM3p9OIM/116/prospect-union-square-somerville-ma-9.png?t=p&p=1
1 Bed/1 Bath Den-T-AD1 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
2002 $4,146 749 Now

2 Bedrooms

2 Bed/2 Bath-B-B2

$4,236-$7,940 total monthly price

2 Beds, 2 Baths, 858 Sq Ft

https://imagescdn.homes.com/i2/LHKkh0EUjJ9kOk6He-_DQTNosV3AqYatCOkOE7-3UB0/116/prospect-union-square-somerville-ma-18.png?p=1
2 Bed/2 Bath-B-B2 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
0439 $4,236 858 Jan 2, 2026

2 Bed/2 Bath-B-B9

$4,291-$7,561 total monthly price

2 Beds, 2 Baths, 913 Sq Ft

https://imagescdn.homes.com/i2/3BaozUFaioPcuK-YBo8IEdCC_iyRGZBR7V-xrGprg-A/116/prospect-union-square-somerville-ma-15.png?p=1
2 Bed/2 Bath-B-B9 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
0452 $4,291 913 Dec 22

2 Bed/2 Bath-B-B8

$4,295-$7,567 total monthly price

2 Beds, 2 Baths, 907 Sq Ft

https://imagescdn.homes.com/i2/qrxwuuZdYwIHCYUtBowIzQBZs0WPQG8AV2wSYoFJtMw/116/prospect-union-square-somerville-ma-16.png?p=1
2 Bed/2 Bath-B-B8 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
0550 $4,295 907 Dec 23

2 Bed/2 Bath-B-B3

$4,365-$8,177 total monthly price

2 Beds, 2 Baths, 867 Sq Ft

https://imagescdn.homes.com/i2/c-xm2jEUW4z12H72YNRPfWpDUuGW91b5Inw7xzH7pcY/116/prospect-union-square-somerville-ma-10.png?p=1
2 Bed/2 Bath-B-B3 Floor Plan
2 Available Units
Unit Price Sq Ft Availability
0340 $4,585 867 Now
0640 $4,365 867 Jan 16, 2026

2 Bed/1 Bath-T-B2

$4,475-$8,384 total monthly price

2 Beds, 1 Bath, 839 Sq Ft

https://imagescdn.homes.com/i2/DMusqrJG19H4Zcqrc310850c9sLQLiIZ3QheCVBIbnA/116/prospect-union-square-somerville-ma-19.png?t=p&p=1
2 Bed/1 Bath-T-B2 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
1909 $4,475 839 Jan 9, 2026

2 Bed/2 Bath-T-B3

$4,625-$7,570 total monthly price

2 Beds, 2 Baths, 847 Sq Ft

https://imagescdn.homes.com/i2/AMtKrhxGbyCScIRmkpeE7PukE1saaGjQuQZfUAl0MKA/116/prospect-union-square-somerville-ma-11.png?t=p&p=1
2 Bed/2 Bath-T-B3 Floor Plan
1 Available Unit
Unit Price Sq Ft Availability
1906 $4,625 847 Now

Fees and Policies

The fees below are based on community-supplied data and may exclude additional fees and utilities. Use the Rent Estimate Calculator to determine your monthly and one-time costs based on your requirements.

Utilities And Essentials

Utility - Electric Service
3rd Party.Monthly fee for electric utility service.
Utility - Sewer Service
Monthly fee for sewer utility service.
Utility - Gas Service
Monthly fee for gas utility service.
Utility - Water Service
Monthly fee for water utility service.
Renter Provided Liability Insurance
Minimum personal liability coverage required by the Property. Contact the Leasing Team for details of specific requirements.
Utility - Trash Service
Monthly fee for trash and/or recycling collection and waste disposal.
Utility - Electric Service
Varies
Utility - Sewer Service
Usage Based
Utility - Gas Service
Included
Utility - Water Service
Usage Based
Renter Provided Liability Insurance
Varies
Utility - Trash Service
Included

Parking

Parking (Third Party)
Parking fee if/when parking is limited or not available at the Property.
Parking (Third Party)
$300 / mo

Pets

Pet Rent
Monthly fee required per approved pet or apartment.  Maximum two pets per apartment.  Service Animals and ESAs are exempt.  Contact the Leasing Team for additional details and weight specifications, if applicable.
Pet Rent
$50 - $75 / mo

Storage

Rentable Item - Storage Space
Monthly fee for rental of each additional storage space. Pricing may vary based on size and/or location. Contact the Leasing Team for availability and limitations.
Rentable Item - Storage Space
$50 / mo

Personal Add-Ons

Renters Liability Insurance - Property Program
Minimum personal liability coverage required by the Property if no Third Party policy is provided. Does not include contents coverage.
Utility - Cable TV Service
3rd Party.Monthly fee for cable TV service.
Utility - Internet Service (Optional)
3rd Party.Monthly fee for internet service.
Renters Liability Insurance - Property Program
$20.60 / mo
Utility - Cable TV Service
Varies
Utility - Internet Service (Optional)
Varies

Property Fee Disclaimer: Standard Security Deposit subject to change based on screening results; total security deposit(s) will not exceed any legal maximum. Resident may be responsible for maintaining insurance pursuant to the Lease. Some fees may not apply to apartment homes subject to an affordable program. Resident is responsible for damages that exceed ordinary wear and tear. Some items may be taxed under applicable law. This form does not modify the lease. Additional fees may apply in specific situations as detailed in the application and/or lease agreement, which can be requested prior to the application process. All fees are subject to the terms of the application and/or lease. Residents may be responsible for activating and maintaining utility services, including but not limited to electricity, water, gas, and internet, as specified in the lease agreement.

Map