3450 Keystone Loop
Discovery Bay, CA 94505
4 bd 2 ba 3,030 sqft Built 2003 Lot 6,800 sqft single_family
Most recent sale
$839,000
Jul 20, 2022
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Jun 6, 2025 | Price changed | $825,000 | bridgeMLS |
| May 30, 2025 | Listed | $849,000 | bridgeMLS |
| Jul 31, 2024 | Listed for rent | $3,500 | AppfolioUnits |
| Jul 8, 2024 | Price changed | $899,999 | BayEast |
| Jun 5, 2024 | Listed | $939,000 | BayEast |
| Jul 20, 2022 | Sold | $839,000 | Public Record |
| Jun 3, 2022 | Relisted | $839,000 | MLS #40991929 |
| May 12, 2022 | Listed | $869,000 | MLS #40991929 |
| May 5, 2015 | Sold | $501,000 | MLS #40690773 |
| Mar 25, 2015 | Price changed | $495,000 | MLS #40690773 |
| Mar 16, 2015 | Listed | $475,000 | MLS #40690773 |
| Dec 11, 2014 | Sold | $475,000 | MLS #40646931 |
| Nov 14, 2014 | Price changed | $484,900 | MLS #40646931 |
| Nov 7, 2014 | Price changed | $485,000 | MLS #40646931 |
| Oct 31, 2014 | Price changed | $489,900 | MLS #40646931 |
| Oct 23, 2014 | Price changed | $492,500 | MLS #40646931 |
| Oct 16, 2014 | Price changed | $493,000 | MLS #40646931 |
| Oct 15, 2014 | Price changed | $493,500 | MLS #40646931 |
| Sep 24, 2014 | Price changed | $493,900 | MLS #40646931 |
| Sep 17, 2014 | Price changed | $494,000 | MLS #40646931 |
| Aug 12, 2014 | Price changed | $494,300 | MLS #40646931 |
| Jul 27, 2014 | Price changed | $494,400 | MLS #40646931 |
| Jun 25, 2014 | Price changed | $494,500 | MLS #40646931 |
| Jun 6, 2014 | Price changed | $494,900 | MLS #40646931 |
| Apr 16, 2014 | Price changed | $489,000 | MLS #40646931 |
| Mar 1, 2014 | Listed | $489,900 | MLS #40646931 |
| Feb 11, 2014 | Sold | $390,000 | Public Record |
| Oct 18, 2013 | Listing removed | $379,000 | CRMLS |
| Jul 8, 2013 | Listed | $379,000 | MLS #OC13135389 |
| Oct 16, 2010 | Listing removed | $2,400 | ContraCosta |
| Oct 1, 2010 | Price changed for rent | $2,400 | ContraCosta |
| Sep 10, 2010 | Listed for rent | $2,500 | ContraCosta |
| Apr 15, 2004 | Sold | $476,500 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $623,199 | $249,696 | $872,895 | $11,753 |
| 2024 | $623,199 | $249,696 | $872,895 | $11,230 |
| 2023 | $599,000 | $240,000 | $839,000 | $11,058 |
| 2022 | $454,142 | $113,250 | $567,392 | $8,018 |
| 2021 | $445,238 | $111,030 | $556,268 | $7,830 |
| 2020 | $440,673 | $109,892 | $550,565 | $7,794 |
| 2019 | $432,033 | $107,738 | $539,771 | $7,698 |
| 2018 | $423,562 | $105,626 | $529,188 | $7,400 |
| 2017 | $415,257 | $103,555 | $518,812 | $7,247 |
| 2016 | $407,115 | $101,525 | $508,640 | $6,864 |
| 2015 | $376,000 | $99,000 | $475,000 | $6,418 |
| 2014 | $286,614 | $103,386 | $390,000 | $5,551 |
| 2013 | $237,007 | $85,493 | $322,500 | $4,786 |
| 2012 | $222,309 | $80,191 | $302,500 | $4,559 |
| 2011 | $199,527 | $71,973 | $271,500 | $4,204 |
| 2010 | $204,671 | $73,829 | $278,500 | $4,106 |
| 2009 | $204,671 | $73,829 | $278,500 | $4,039 |
| 2008 | $309,395 | $111,605 | $421,000 | $5,715 |
| 2007 | $465,929 | $168,071 | $634,000 | $7,910 |
Property facts
Year built
2003
Property type
single_family
Stories
2
Beds
4
Baths
2
Living area
3,030 sqft
Lot size
6,800 sqft
ZIP code
94505
City
Discovery Bay
Street
Keystone Loop
Coordinates
37.91409, -121.61488
Comparable properties nearby
Investment analysis
Estimates based on local averages — not personalized adviceEstimated monthly rent
$9,696
Gross rental yield
13.87%
Implied cap rate
9.01%
Trend-extrapolated value
—
Frequently asked questions
When did 3450 Keystone Loop last sell?
3450 Keystone Loop most recently sold on Jul 20, 2022 for $839,000.
What is the current tax assessment for 3450 Keystone Loop?
The most recent total assessment for 3450 Keystone Loop (year 2025) is $872,895 with $11,753 in property tax.
How does 3450 Keystone Loop's assessment compare to its last sale price?
The current assessment is 4.0% above the last sale price of $839,000.
When was 3450 Keystone Loop built?
3450 Keystone Loop was built in 2003.
How does 3450 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 3450 Keystone Loop?
3450 Keystone Loop is a 4 bed, 2 bath, 3,030 sqft, 6,800 sqft lot single_family.
Is 3450 Keystone Loop a flip candidate?
No — 3450 Keystone Loop does not appear in our flips dataset.
Is 3450 Keystone Loop a tax-appeal candidate?
No — 3450 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