Jamesburg Borough Seal

Jamesburg Borough Assessment Dashboard

Middlesex County, New Jersey
2026 Mid-Year Report — January through July 1

This report summarizes real estate market activity in Jamesburg Borough for the first half of 2026, based on 27 recorded sales. Use the navigation menu to explore sales data, ratio studies, and market indicators.

Message from the Assessor — Matthew R. Barbieri, CTA

The following data reflects 27 sales recorded in Jamesburg Borough from January through July 1, 2026. The market indicators show continued price appreciation across both single-family and condo segments. The ratio study reflects current market conditions relative to the existing assessment base.

⚠ Important Note on Assessment Ratios: Jamesburg Borough's current assessments are based on a 1985 revaluation. As a result, assessed values reflect 1985 market values and are significantly below today's market levels. An average assessment ratio of 28.24% is expected and does not indicate an error in your assessment — it reflects the difference between 1985 valuations and current market prices. The borough is currently exploring a future revaluation program to bring assessed values in line with the current real estate market.

Total Sales
27
Jan 23 – Jun 12, 2026
Single-Family Median
$396,000
18 SF sales
Condo Median
$410,000
9 condo sales
Average Assessment Ratio
28.24%
Based on 1985 valuations
Coefficient of Deviation
11.72%
NJ standard: ≤15%
Recent Sales Map
Click any marker • ● Single-family  ● Condo
Recent Sales
10 most recent of 27 sales
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Assessment-to-Sale Price Ratio Study
2026 Mid-Year Report — Based on 27 sales, January 23 through June 12, 2026
Understanding Jamesburg's Ratios: Jamesburg Borough has not undergone a revaluation since 1985. All assessed values reflect 1985 market values. An average ratio of 28.24% means assessments are approximately 28.24 cents on the dollar relative to current market prices. This is entirely expected and does not indicate any problem with individual assessments — it reflects 40+ years of market appreciation since the last revaluation.
The X axis is the sale date and the Y axis is the assessment-to-sale ratio. A ratio of 100% would indicate the assessment exactly matches the sale price. All ratios below 100% reflect the 1985 assessment base relative to 2026 market values.
Single-family Condo Avg Ratio (28.24%)
Trim Ratios (Top/Bottom %): Removes highest and lowest ratios from the chart.
Statistics from 27 sales: Avg Ratio 28.24% • COD 11.72%
Sales Data Table
All 27 sales — January through June 2026
AddressDateSale Price$/SFLiv SFTypeRatioZillow
Total Sales (YTD)
27
2026 Mid-Year Report
SF Median Price
$396,000
18 single-family sales
Condo Median Price
$410,000
9 condo sales
Avg Price Per SF
$308
All residential sales
Price Range
$195K–$680K
Full sale price range
Monthly Sales Volume
January through June 2026
Sales by Price Range
Historical Market Context — Jamesburg Borough (Last 10 Years)
Single-family and condo/townhome trends — 2016 through 2026
Context note: Historical data represents all recorded sales in Jamesburg Borough by property type. Provided for market context only and does not reflect assessed values or ratio study conclusions.
Median Sale Price by Year
Average Price Per Square Foot by Year
Annual Sales Volume by Type
Cumulative Price Appreciation Index (2016 = 100)
Both property types indexed to 100 in 2016 — shows relative appreciation over time. Note: 2026 values reflect partial-year mid-year sales only.
Residential Market Indicators
External data provided for context only — does not determine individual assessments
Middlesex County House Price Index — FRED
Federal Housing Finance Agency via FRED • Updated annually
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Middlesex County Median Listing Price — FRED (via Realtor.com)
Realtor.com via FRED • Updated monthly
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Source: Realtor.com via FRED. Context only — does not determine individual assessments.
Middlesex County — Redfin
Median sale price, days on market, and inventory trends updated monthly.
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Middlesex County — Realtor.com
Listing price trends, days on market, and price-per-square-foot data.
View on Realtor.com ↗