Penthouse living in the heart of Union Square. Set at the top of a professionally managed building, this bright duplex offers space, light, and a loft-style feel in an ideal location. Fifty-one steps up (yes, you’ll earn your views), you’re welcomed into an open living and dining area with soaring ceilings, oversized windows, and excellent natural light. The kitchen features stone countertops, gas cooking, and stainless steel appliances, flowing seamlessly into the main space, perfect for everyday living or entertaining. Step out to your private deck for evening light, or retreat upstairs to the lofted primary suite overlooking the living area below. Additional features include central air, in-unit laundry, hardwood floors, and one off-street parking space. Moments to Union Square, with easy access to Harvard, Porter, and public transit, come explore all the Somerville has to offer.
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| Year | Land | Building | Total | Change |
|---|---|---|---|---|
| FY2025 | $0 | $630,700 | $630,700 | — |
| Date | Price | Book/Page |
|---|---|---|
| Nov 16, 2021 | $74,000 | 79147/0193 |
| Aug 31, 2021 | $518,000 | 78588/0334 |
| Aug 13, 2021 | $765,000 | 78468/0400 |
| Apr 21, 2021 | $765,000 | 77558/0286 |
| Jul 24, 2015 | $525,000 | 65784/0223 |
Discrepancies found between MLS and assessor records.
| Field | Assessor | MLS | Match |
|---|---|---|---|
| Sqft | 1,325 | 1,134 | ✗ |
| Year built | 2,003 | 2,003 | ✓ |
Union Square
21 Park Street # 5, Somerville MA 02143
Somerville, MA 02143
| Date | Event | Price | Change | $/sqft | Details |
|---|---|---|---|---|---|
| 04/17/2026 | 🏠 Listed for Sale | $3,550 | - | - | Original listing |
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