21 Keystone Dr
Gaithersburg, MD 20878
4 bd 4 ba 2,308 sqft Built 1974 Lot 9,529 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 |
|---|---|---|---|---|
| 2022 | $306,900 | $216,700 | $523,600 | $6,336 |
| 2021 | $306,900 | $216,700 | $523,600 | $6,364 |
| 2020 | $339,100 | $216,700 | $555,800 | $3,321 |
| 2017 | $158,700 | $216,700 | $375,400 | $4,403 |
| 2015 | $172,700 | $193,000 | $365,700 | $4,200 |
Property facts
Year built
1974
Property type
single_family
Stories
4
Beds
4
Baths
4
Living area
2,308 sqft
Lot size
9,529 sqft
ZIP code
20878
City
Gaithersburg
Street
Keystone Dr
Coordinates
39.13324, -77.24213
Comparable properties nearby
Frequently asked questions
When did 21 Keystone Dr last sell?
No public-record sale is on file for 21 Keystone Dr.
What is the current tax assessment for 21 Keystone Dr?
The most recent total assessment for 21 Keystone Dr (year 2022) is $523,600 with $6,336 in property tax.
When was 21 Keystone Dr built?
21 Keystone Dr was built in 1974.
How does 21 Keystone Dr compare to others on Keystone Dr?
We track 3 other properties on Keystone Dr. Browse the list under "Other properties on Keystone Dr" to compare beds, baths, and sale history.
What are the property facts for 21 Keystone Dr?
21 Keystone Dr is a 4 bed, 4 bath, 2,308 sqft, 9,529 sqft lot single_family.
Is 21 Keystone Dr a flip candidate?
No — 21 Keystone Dr does not appear in our flips dataset.
Is 21 Keystone Dr a tax-appeal candidate?
No — 21 Keystone Dr is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+0.1%
Implied 1-yr
+0.5%
2026 Q3
$804K
2026 Q4
$805K
ZIP 20878 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Keystone Dr