123 Williamson Ct
Martinez, CA 94553
4 bd 3 ba 1,943 sqft Built 1997 Lot 5,200 sqft single_family
Most recent sale
$329,500
Mar 31, 2000
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Jul 31, 2025 | Sold | $860,000 | ContraCosta |
| Apr 21, 2025 | Price changed | $899,000 | ContraCosta |
| Mar 24, 2025 | Price changed | $935,000 | ContraCosta |
| Jan 17, 2025 | Listed | $949,000 | ContraCosta |
| Aug 30, 2022 | Listed | $899,999 | MLS #41006917 |
| Mar 31, 2000 | Sold | $329,500 | Public Record |
| Nov 18, 1997 | Sold | $215,000 | Public Record |
| Sep 22, 1997 | Sold | $215,000 | ContraCosta |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $383,466 | $122,947 | $506,413 | $7,229 |
| 2024 | $383,466 | $122,947 | $506,413 | $7,084 |
| 2023 | $368,577 | $118,174 | $486,751 | $6,909 |
| 2022 | $361,350 | $115,857 | $477,207 | $6,789 |
| 2021 | $354,265 | $113,586 | $467,851 | $6,561 |
| 2020 | $350,633 | $112,422 | $463,055 | $6,438 |
| 2019 | $343,758 | $110,218 | $453,976 | $6,316 |
| 2018 | $337,018 | $108,057 | $445,075 | $6,181 |
| 2017 | $330,410 | $105,939 | $436,349 | $6,011 |
| 2016 | $323,932 | $103,862 | $427,794 | $5,870 |
| 2015 | $319,067 | $102,302 | $421,369 | $5,837 |
| 2014 | $312,817 | $100,299 | $413,116 | $5,772 |
| 2013 | $293,799 | $94,201 | $388,000 | $5,391 |
| 2012 | $233,221 | $74,779 | $308,000 | $4,475 |
| 2011 | $255,180 | $81,820 | $337,000 | $4,746 |
| 2010 | $286,983 | $92,017 | $379,000 | $5,209 |
| 2009 | $290,012 | $92,988 | $383,000 | $5,159 |
| 2008 | $291,945 | $93,608 | $385,553 | $5,087 |
| 2007 | $286,221 | $91,773 | $377,994 | $4,948 |
Property facts
Year built
1997
Property type
single_family
Stories
2
Beds
4
Baths
3
Living area
1,943 sqft
Lot size
5,200 sqft
ZIP code
94553
City
Martinez
Street
Williamson Ct
Coordinates
37.99183, -122.09213
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 123 Williamson Ct last sell?
123 Williamson Ct most recently sold on Mar 31, 2000 for $329,500.
What is the current tax assessment for 123 Williamson Ct?
The most recent total assessment for 123 Williamson Ct (year 2025) is $506,413 with $7,229 in property tax.
How does 123 Williamson Ct's assessment compare to its last sale price?
The current assessment is 53.7% above the last sale price of $329,500.
When was 123 Williamson Ct built?
123 Williamson Ct was built in 1997.
How does 123 Williamson Ct compare to others on Williamson Ct?
We track 2 other properties on Williamson Ct. Browse the list under "Other properties on Williamson Ct" to compare beds, baths, and sale history.
What are the property facts for 123 Williamson Ct?
123 Williamson Ct is a 4 bed, 3 bath, 1,943 sqft, 5,200 sqft lot single_family.
Is 123 Williamson Ct a flip candidate?
No — 123 Williamson Ct does not appear in our flips dataset.
Is 123 Williamson Ct a tax-appeal candidate?
No — 123 Williamson Ct is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-2.0%
Implied 1-yr
-7.9%
2026 Q3
$746.5K
2026 Q4
$729.5K
ZIP 94553 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Williamson Ct