3423 Keystone Loop
Discovery Bay, CA 94505
5 bd 4 ba 3,517 sqft Built 2003 Lot 7,000 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 | $490,826 | $156,171 | $646,997 | $9,277 |
| 2024 | $490,826 | $156,171 | $646,997 | $8,834 |
| 2023 | $471,767 | $150,107 | $621,874 | $8,698 |
| 2022 | $462,517 | $147,164 | $609,681 | $8,556 |
| 2021 | $453,449 | $144,279 | $597,728 | $8,356 |
| 2020 | $448,800 | $142,800 | $591,600 | $8,320 |
| 2019 | $424,492 | $149,508 | $574,000 | $8,077 |
| 2018 | $424,492 | $149,508 | $574,000 | $7,888 |
| 2017 | $414,508 | $145,992 | $560,500 | $7,703 |
| 2016 | $384,557 | $135,443 | $520,000 | $6,986 |
| 2015 | $332,420 | $117,080 | $449,500 | $6,141 |
| 2014 | $331,680 | $116,820 | $448,500 | $6,112 |
| 2013 | $286,938 | $101,062 | $388,000 | $5,425 |
| 2012 | $247,743 | $87,257 | $335,000 | $4,838 |
| 2011 | $233,321 | $82,179 | $315,500 | $4,611 |
| 2010 | $233,321 | $82,179 | $315,500 | $4,513 |
| 2009 | $233,321 | $82,179 | $315,500 | $4,446 |
| 2008 | $318,737 | $112,263 | $431,000 | $5,823 |
| 2007 | $376,621 | $132,651 | $509,272 | $6,578 |
Property facts
Year built
2003
Property type
single_family
Stories
2
Beds
5
Baths
4
Living area
3,517 sqft
Lot size
7,000 sqft
ZIP code
94505
City
Discovery Bay
Street
Keystone Loop
Coordinates
37.91443, -121.61594
Comparable properties nearby
Frequently asked questions
When did 3423 Keystone Loop last sell?
No public-record sale is on file for 3423 Keystone Loop.
What is the current tax assessment for 3423 Keystone Loop?
The most recent total assessment for 3423 Keystone Loop (year 2025) is $646,997 with $9,277 in property tax.
When was 3423 Keystone Loop built?
3423 Keystone Loop was built in 2003.
How does 3423 Keystone Loop compare to others on Keystone Loop?
We track 8 other properties on Keystone Loop. Browse the list under "Other properties on Keystone Loop" to compare beds, baths, and sale history.
What are the property facts for 3423 Keystone Loop?
3423 Keystone Loop is a 5 bed, 4 bath, 3,517 sqft, 7,000 sqft lot single_family.
Is 3423 Keystone Loop a flip candidate?
No — 3423 Keystone Loop does not appear in our flips dataset.
Is 3423 Keystone Loop a tax-appeal candidate?
No — 3423 Keystone Loop is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+1.9%
Implied 1-yr
+7.4%
2026 Q3
$1.04M
2026 Q4
$1.06M
ZIP 94505 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Keystone Loop