The Flatiron @ Union Square

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Rare Flatiron building unit available! This prime Union Square condo is a must-see on any urban-dweller's wish list! This open-concept home features 9-foot ceilings, maple hardwood floors, and oversized windows allowing for an abundance of natural light. The beautiful kitchen with breakfast bar boasts stainless steel appliances, white shaker-style cabinets, and granite countertops. Amenities include a 1-car parking, private deck, in-unit laundry, central air, large closets and a private storage closet. The Flatiron is a professionally managed luxury elevator building with a common roof-deck, and bike racks. With a walk score of 95, conveniently located near Whole Foods, Bow Market, Target, and the New Union Sq. T.

More Info

Basic Information

  • Bedrooms2
  • Mls StatusUnder Agreement
  • Bathroom1
  • Contingency Pending P&S
  • Parcel Number M:83 B:B L:1 U:304,5038249
  • Unit Number304

Tax Information

  • Tax Assessed Value $882,600
  • Tax Year 2026
  • Taxes$9,948

Parking

  • Parking Spaces1
  • Parking Features Off Street, Assigned

Rooms

  • Bathroom 1 Main, Third
  • Bathrooms Total Decimal 1
  • Bedroom 2 Main, Third,14 x 11
  • Dining Room Main, Third,12 x 12
  • Full Bath1
  • Kitchen Main, Third,12 x 11
  • Living Room Main, Third,12 x 8
  • Main Level Bathrooms 1
  • Main Level Bedrooms 2
  • Master Bedroom Main, Third,14

Basic Information

  • List Price$850,000
  • MLS Number73510324
  • Modification Date06/04/2026
  • Property SubTypeCondominium
  • Purchase Contract Date05/26/2026

Location

  • NeighborhoodUnion Square
  • SubdivisionUnion Square
  • Address70 Prospect Street
  • Building Number70
  • CountyMiddlesex
  • StateMA
  • StreetProspect Street
  • TownSomerville
  • Zip02143

Building

  • BasementN
  • Building Area Units Square Feet
  • Construction Materials Brick
  • Entry Level 3
  • Patio And Porch Features Deck
  • Property NameThe Flatiron @ Union Square
  • Rooms4
  • Stories1
  • Utilities For Gas Range, For Gas Oven, For Electric Dryer, Washer Hookup
  • Window Features Insulated Windows
  • Year Built2015
  • Year Built Details Actual
  • Year Built Source Public Records

Interior

  • Flooring Tile, Hardwood, Flooring - Hardwood
  • Interior Features Open Floorplan, Entrance Foyer

Exterior

  • Exterior Features Deck, Balcony, City View(s)
  • RoofRubber

Utilities

  • Cooling Central Air, Individual
  • Cooling YN Yes
  • Electric Circuit Breakers,100 Amp Service
  • Heat SystemYes
  • Heating Forced Air, Natural Gas
  • Sewer Public Sewer
  • Water Source Public

Property Information

  • Square Feet926
  • Building Area Source Public Records
  • Living Area 926
  • Lot Size Units Acres
  • Property Attached YN Yes
  • Structure Type Mid-Rise
  • View YN Yes

Amenities

  • Accessibility Features Accessible Entrance
  • Amenities
    • Bike Path
    • Golf
    • Highway Access
    • House of Worship
    • Medical Facility
    • Park
    • Private School
    • Public School
    • Public Transportation
    • Shopping
    • T-Station
    • University
    • Walk/Jog Trails
  • Appliances IncludedRange, Dishwasher, Disposal, Microwave, Refrigerator, Washer, Dryer
  • Association Amenities Elevator(s)
  • Green Energy Efficient Thermostat
  • Other AmenitiesGolf
  • PetsYes w/ Restrictions
  • Security Features Intercom

Legal

  • ZoningMixed

Other

  • Association Fee $569
  • Association Fee Frequency Monthly
  • Association Fee Includes
    • Insurance
    • Maintenance Grounds
    • Maintenance Structure
    • Reserve Funds
    • Sewer
    • Snow Removal
    • Trash
    • Water
  • Date Listed04/30/2026
  • Farm Land Area Units Square Feet
  • View Count3

Map Location

Driving Directions

Listed by Team Patti Brainard of Compass

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