21 Grist Mill Rd
Acton, MA 01720
5 bd 4 ba 4,209 sqft Built 1980 Lot 20,038 sqft single_family
No recorded sales
Location
Timeline: Sale, Listing & Tax History
Recorded events
No recorded events
No sale or listing events are on file for this property.
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $669,800 | $341,100 | $1,010,900 | $17,337 |
| 2024 | $601,700 | $341,100 | $942,800 | $15,716 |
| 2023 | $564,200 | $310,000 | $874,200 | $15,351 |
| 2022 | $476,700 | $269,600 | $746,300 | $14,516 |
| 2021 | $438,300 | $249,400 | $687,700 | $13,912 |
| 2020 | $432,200 | $249,400 | $681,600 | $13,114 |
| 2019 | $507,400 | $249,400 | $756,800 | $14,659 |
| 2018 | $491,600 | $249,400 | $741,000 | $14,361 |
| 2017 | $483,600 | $249,400 | $733,000 | $13,971 |
| 2016 | $459,800 | $249,400 | $709,200 | $13,638 |
| 2015 | $457,400 | $249,400 | $706,800 | $13,465 |
| 2013 | $413,200 | $249,400 | $662,600 | $12,656 |
| 2006 | $448,200 | $257,500 | $705,700 | $10,289 |
| 2005 | $474,300 | $223,800 | $698,100 | $9,641 |
| 2004 | $428,200 | $223,800 | $652,000 | $9,148 |
| 2003 | $418,600 | $211,900 | $630,500 | $8,543 |
Property facts
Year built
1980
Property type
single_family
Stories
—
Beds
5
Baths
4
Living area
4,209 sqft
Lot size
20,038 sqft
ZIP code
01720
City
Acton
Street
Grist Mill Rd
Coordinates
42.46335, -71.49236
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 Grist Mill Rd last sell?
No public-record sale is on file for 21 Grist Mill Rd.
What is the current tax assessment for 21 Grist Mill Rd?
The most recent total assessment for 21 Grist Mill Rd (year 2025) is $1,010,900 with $17,337 in property tax.
When was 21 Grist Mill Rd built?
21 Grist Mill Rd was built in 1980.
How does 21 Grist Mill Rd compare to others on Grist Mill Rd?
We track 8 other properties on Grist Mill Rd. Browse the list under "Other properties on Grist Mill Rd" to compare beds, baths, and sale history.
What are the property facts for 21 Grist Mill Rd?
21 Grist Mill Rd is a 5 bed, 4 bath, 4,209 sqft, 20,038 sqft lot single_family.
Is 21 Grist Mill Rd a flip candidate?
No — 21 Grist Mill Rd does not appear in our flips dataset.
Is 21 Grist Mill Rd a tax-appeal candidate?
No — 21 Grist Mill Rd is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-4.0%
Implied 1-yr
-15.9%
2026 Q3
$547.2K
2026 Q4
$517.9K
ZIP 01720 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Grist Mill Rd