21923 Knob Hill Pl
Ashburn, VA 20148
4 bd 5 ba 4,380 sqft Built 2011 Lot 13,068 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 | $779,870 | $325,500 | $1,105,370 | $8,898 |
| 2023 | $615,850 | $310,500 | $926,350 | $8,105 |
| 2022 | $607,870 | $270,500 | $878,370 | $7,817 |
| 2021 | $522,290 | $260,500 | $782,790 | $7,671 |
| 2020 | $517,200 | $200,500 | $717,700 | $7,428 |
| 2019 | $497,830 | $200,500 | $698,330 | $7,297 |
| 2018 | $475,170 | $190,500 | $665,670 | $7,222 |
| 2017 | $442,020 | $190,500 | $632,520 | $7,115 |
| 2016 | $434,380 | $190,500 | $624,880 | $7,154 |
| 2015 | $444,290 | $190,500 | $634,790 | $7,204 |
| 2014 | $422,340 | $180,500 | $602,840 | $6,962 |
| 2013 | $395,140 | $180,500 | $575,640 | $6,936 |
| 2012 | $381,000 | $180,500 | $561,500 | $6,934 |
| 2011 | — | $160,500 | $160,500 | $2,062 |
| 2009 | — | $81,000 | $81,000 | $1,132 |
| 2008 | — | $165,600 | $165,600 | $1,887 |
Property facts
Year built
2011
Property type
single_family
Stories
—
Beds
4
Baths
5
Living area
4,380 sqft
Lot size
13,068 sqft
ZIP code
20148
City
Ashburn
Street
Knob Hill Pl
Coordinates
39.00980, -77.55844
Comparable properties nearby
Frequently asked questions
When did 21923 Knob Hill Pl last sell?
No public-record sale is on file for 21923 Knob Hill Pl.
What is the current tax assessment for 21923 Knob Hill Pl?
The most recent total assessment for 21923 Knob Hill Pl (year 2025) is $1,105,370 with $8,898 in property tax.
When was 21923 Knob Hill Pl built?
21923 Knob Hill Pl was built in 2011.
How does 21923 Knob Hill Pl compare to others on Knob Hill Pl?
We track 8 other properties on Knob Hill Pl. Browse the list under "Other properties on Knob Hill Pl" to compare beds, baths, and sale history.
What are the property facts for 21923 Knob Hill Pl?
21923 Knob Hill Pl is a 4 bed, 5 bath, 4,380 sqft, 13,068 sqft lot single_family.
Is 21923 Knob Hill Pl a flip candidate?
No — 21923 Knob Hill Pl does not appear in our flips dataset.
Is 21923 Knob Hill Pl a tax-appeal candidate?
No — 21923 Knob Hill Pl is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+1.0%
Implied 1-yr
+4.0%
2026 Q3
$1.01M
2026 Q4
$1.01M
ZIP 20148 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Knob Hill Pl