20 Knoll St
Greenwich, CT 06878
5 bd 5 ba 3,625 sqft Built 1928 Lot 11,326 sqft single_family
Most recent sale
$780,000
May 15, 1997
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Jul 24, 2024 | Sold | $3,453,000 | SMARTMLS |
| Apr 13, 2024 | Listing removed | — | Greenwich |
| Apr 8, 2024 | Listed | $3,150,000 | SMARTMLS |
| Apr 5, 2024 | Listed | $3,150,000 | Greenwich |
| May 15, 1997 | Sold | $780,000 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $787,080 | $929,810 | $1,716,890 | $21,219 |
| 2023 | $637,350 | $929,810 | $1,567,160 | $18,235 |
| 2022 | $637,350 | $929,810 | $1,567,160 | $18,069 |
| 2021 | $742,840 | $792,260 | $1,535,100 | $18,483 |
| 2020 | $742,840 | $792,260 | $1,535,100 | $18,452 |
| 2019 | $742,840 | $792,260 | $1,535,100 | $18,636 |
| 2018 | $712,460 | $792,260 | $1,504,720 | $17,861 |
| 2017 | $712,460 | $792,260 | $1,504,720 | $18,085 |
| 2016 | $712,460 | $792,260 | $1,504,720 | $17,799 |
| 2015 | $492,380 | $833,210 | $1,325,590 | $15,725 |
| 2013 | $492,380 | $833,210 | $1,325,590 | $14,992 |
| 2006 | $560,770 | $954,100 | $1,514,870 | $11,892 |
| 2004 | $685,090 | $386,540 | $1,071,630 | $12,506 |
| 2003 | $585,270 | $386,540 | $971,810 | $10,972 |
Property facts
Year built
1928
Property type
single_family
Stories
—
Beds
5
Baths
5
Living area
3,625 sqft
Lot size
11,326 sqft
ZIP code
06878
City
Greenwich
Street
Knoll St
Coordinates
41.02979, -73.57798
Comparable properties nearby
Frequently asked questions
When did 20 Knoll St last sell?
20 Knoll St most recently sold on May 15, 1997 for $780,000.
What is the current tax assessment for 20 Knoll St?
The most recent total assessment for 20 Knoll St (year 2025) is $1,716,890 with $21,219 in property tax.
How does 20 Knoll St's assessment compare to its last sale price?
The current assessment is 120.1% above the last sale price of $780,000.
When was 20 Knoll St built?
20 Knoll St was built in 1928.
How does 20 Knoll St compare to others on Knoll St?
We do not currently track other properties on Knoll St.
What are the property facts for 20 Knoll St?
20 Knoll St is a 5 bed, 5 bath, 3,625 sqft, 11,326 sqft lot single_family.
Is 20 Knoll St a flip candidate?
No — 20 Knoll St does not appear in our flips dataset.
Is 20 Knoll St a tax-appeal candidate?
No — 20 Knoll St is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-0.9%
Implied 1-yr
-3.8%
2026 Q2
$2.66M
2026 Q3
$2.64M
ZIP 06878 — Median Price History + Forecast
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Geography