12639 Knoll Rd
Mount Airy, MD 21771
4 bd 5 ba 4,326 sqft Built 1972 Lot 185,130 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 |
|---|---|---|---|---|
| 2021 | $301,700 | $132,600 | $434,300 | $5,238 |
| 2018 | $223,900 | $132,600 | $356,500 | $4,326 |
| 2015 | $217,500 | $132,600 | $350,100 | $4,251 |
Property facts
Year built
1972
Property type
single_family
Stories
—
Beds
4
Baths
5
Living area
4,326 sqft
Lot size
185,130 sqft
ZIP code
21771
City
Mount Airy
Street
Knoll Rd
Coordinates
39.39578, -77.22445
Comparable properties nearby
Frequently asked questions
When did 12639 Knoll Rd last sell?
No public-record sale is on file for 12639 Knoll Rd.
What is the current tax assessment for 12639 Knoll Rd?
The most recent total assessment for 12639 Knoll Rd (year 2021) is $434,300 with $5,238 in property tax.
When was 12639 Knoll Rd built?
12639 Knoll Rd was built in 1972.
How does 12639 Knoll Rd compare to others on Knoll Rd?
We track 5 other properties on Knoll Rd. Browse the list under "Other properties on Knoll Rd" to compare beds, baths, and sale history.
What are the property facts for 12639 Knoll Rd?
12639 Knoll Rd is a 4 bed, 5 bath, 4,326 sqft, 185,130 sqft lot single_family.
Is 12639 Knoll Rd a flip candidate?
No — 12639 Knoll Rd does not appear in our flips dataset.
Is 12639 Knoll Rd a tax-appeal candidate?
No — 12639 Knoll 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
+0.3%
Implied 1-yr
+1.2%
2026 Q2
$642.4K
2026 Q3
$644.2K
ZIP 21771 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Knoll Rd