$1,389,000
12 bd4 ba4,900 sqft
21-27 Gay St

The average Chelmsford, MA home value is $689,912, up 1.2% over the past year and goes to pending in around 8 days.
Zillow Home Value Index (ZHVI), built from the ground up by measuring monthly changes in property level Zestimates, captures both the level and home values across a wide variety of geographies and housing types.
Typical Home Values: $689,912
1-year Value Change: +1.2%
(Data through July 31, 2025)
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