474 square feet of very good decisions. Tucked on the second floor of a handsome brick building right on Mass Ave, across from Porter Square and a short stroll to Harvard Law, this sun-lit one-bedroom puts you at the center of Cambridge's most beloved urban village - steps from the red and commuter lines, Bagelsaurus, Giulia, Yume Wo Katare, Porter Square Books, and more of the neighborhood energy that makes this stretch of Cambridge so hard to leave. Compact but never cramped: an efficient layout with a full kitchen, a tiled bath, generous closets, and windows that frame the lively street below. In-building laundry, a common yard, and a Zipcar station around the corner round out the package. It's the kind of place a Harvard or Lesley affiliate claims as their city anchor, a parent invests in for a child/student, or a savvy buyer quietly adds to a portfolio. Whether you're putting down roots, procuring a pied-à-terre, or investing, this little gem punches well above its weight.
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| Year | Land | Building | Total | Change |
|---|---|---|---|---|
| FY2026 | $0 | $630,200 | $630,200 | — |
| Date | Price | Book/Page |
|---|---|---|
| Jun 12, 2025 | $698,000 | 84216/0551 |
| Jun 10, 2025 | $100 | 84206/0244 |
| Apr 2, 2025 | $1 | 83925/0026 |
| Dec 16, 2024 | $390,000 | 83588/0225 |
| Jul 15, 2024 | $590,000 | 83003/0155 |
| May 31, 2024 | $370,000 | 82829/0512 |
| Oct 18, 2023 | $360,500 | 82107/0303 |
| Dec 20, 2021 | $10 | 79384/0018 |
| Aug 27, 2021 | $360,000 | 78566/0502 |
| Jul 16, 2021 | $360,000 | 78263/0268 |
| Jun 9, 2021 | $1 | 77975/0463 |
| May 25, 2021 | $360,000 | 77859/0099 |
| May 24, 2021 | $375,000 | 77842/0244 |
| Mar 10, 2021 | $400,000 | 77188/0093 |
| Sep 8, 2020 | $340,000 | 75558/0249 |
| Jun 23, 2020 | $10 | 74947/0276 |
| Aug 29, 2018 | $1 | 71548/0179 |
| Aug 11, 2017 | $1 | 69755/0313 |
| Oct 3, 2016 | $1 | 68143/0257 |
| Nov 12, 2015 | $390,000 | 66371/0189 |
| Mar 16, 2015 | $502,000 | 65060/0407 |
| Jun 30, 2014 | $1 | 63845/0497 |
| Feb 27, 2014 | $481,000 | 63314/0073 |
| May 31, 2013 | $217,000 | 61915/0406 |
| Oct 2, 2012 | $317,500 | 60154/0018 |
| Aug 31, 2012 | $205,500 | 59896/0228 |
| Jun 14, 2012 | $1 | 59294/0367 |
| May 25, 2012 | $292,000 | 59166/0262 |
| Oct 20, 2011 | $294,000 | 57679/0021 |
| Nov 22, 2010 | $235,000 | 55884/0162 |
| Oct 29, 2010 | $178,500 | 55712/0100 |
| Oct 29, 2010 | $175,000 | 55699/0132 |
| Jul 20, 2010 | $178,000 | 55010/0582 |
| Apr 28, 2010 | $185,000 | 54597/0546 |
| Dec 18, 2009 | $339,900 | 54017/0133 |
| Dec 9, 2009 | $311,000 | 53969/0236 |
| Dec 4, 2009 | $255,000 | 53950/0527 |
| Jul 8, 2009 | $600,000 | 53160/0391 |
| Jan 27, 2009 | $254,000 | 52137/0310 |
| Jul 31, 2007 | $280,000 | 49865/0276 |
| Oct 26, 2006 | $190,550 | 48381/0223 |
| Jul 26, 2006 | $1 | 47868/0235 |
| Dec 2, 2005 | $150,000 | 46594/0282 |
| Aug 23, 2005 | $164,900 | 45917/0430 |
| May 20, 2005 | $100 | 45221/0020 |
| Aug 26, 2004 | $164,900 | 43593/0231 |
| Jun 29, 2004 | $327,000 | 43172/0524 |
| Jan 6, 2004 | $1 | 41735/0535 |
| Aug 1, 2003 | $185,000 | 40269/0410 |
| Mar 3, 2003 | $174,900 | 38155/0614 |
| May 13, 2002 | $642,500 | 35446/0478 |
| Jul 31, 2001 | $139,000 | 33366/0518 |
| Mar 4, 1998 | $100 | 28261/0098 |
| Jan 1, 1998 | $1,700,000 | 00000/0000 |
| Aug 30, 1996 | $95,000 | 26632/0485 |
| Jul 30, 1996 | $235,000 | 26539/0085 |
| Jul 26, 1996 | $186,000 | 26527/0501 |
| Mar 31, 1995 | $217,500 | 25261/0392 |
| Jun 14, 1990 | $197,000 | 20598/0122 |
| Dec 22, 1989 | $18,173 | 20281/0351 |
| Dec 22, 1989 | $13,688 | 20281/0333 |
| Dec 21, 1989 | $16,079 | 20281/0339 |
| Dec 21, 1989 | $11,620 | 20277/0282 |
Discrepancies found between MLS and assessor records.
| Field | Assessor | MLS | Match |
|---|---|---|---|
| Sqft | 727 | 474 | ✗ |
| Year built | 1,904 | 1,904 | ✓ |
Porter Square
1800 Massachusetts Ave # 23, Cambridge MA 02140
Cambridge, MA 02140
| Date | Event | Price | Change | $/sqft | Details |
|---|---|---|---|---|---|
| 04/02/2026 | 📋 Status: Active under contract | - | - | - | Active → Active Under Contract |
| 04/01/2026 | ⏳ Pending Sale | - | - | - | Offer accepted, sale pending |
| 03/17/2026 | 🏠 Listed for Sale | $488,000 | - | - | Original listing |
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