2805 Dartmouth Ln, Olympia Fields, IL 60461

6 bed / 2 bath, 4,182 sqft, built 1977, in Rich Assessor market value for 2025: $370,000.

Cook County account 31241010090000

Assessor market value

$370,000

Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it

Living area

4,182 sqft

$88 per sqft

Year built

1977

Average quality

Compare this assessment

Start with the county value and property facts, then review appraisal comps, recent sales, and prior-year changes to decide whether the assessment is worth challenging. The comps on this page are free to review; email sign-in is only used to save a printable report.

For nearby context, browse ZIP 60461 and Rich assessment pages.

Appeal deadlines

Rich 2026 appeal dates have not been published yet.

Deadline rule: Set by township: file with the Assessor by your township's last file date, and with the Board of Review while your township is open there. Evidence is reviewed by the Cook County Assessor's Office or, in a separate appeal, by the Cook County Board of Review. Dates checked September 27, 2026 against the official source.

Assessment snapshot

These public CCAO records highlight what may be worth checking before you file.

Assessment changeThe assessor market value stayed about the same, from $370,000 in 2024 to $370,000 in 2025.
Assessor market value per square footThe current public record shows about $88 per square foot before any comparable-property adjustments.
Nearby comparison areaThis page starts the equity review with public records for the Rich neighborhood and ZIP 60461.
Neighborhood value signalAmong 42 residential records in the same neighborhood, the average assessor market value is about $107 per square foot.
Area year-over-year signalNearby residential records with prior-year values stayed about flat on average.

Comparable assessments

Similar public appraisal records selected for this property's equity comparison.

3130 London Dr, Olympia Fields, IL 60461
4,011 sqft | $97/sqft | built 1990 | Similar size (4,011 vs 4,182 sqft); Lot 10% smaller (20,083 vs 22,400 sqft); Same quality (Average)
$390,000
2825 Dartmouth Ln, Olympia Fields, IL 60461
3,954 sqft | $94/sqft | built 1979 | 6% smaller (3,954 vs 4,182 sqft); Similar age (1979 vs 1977); Same quality (Average)
$370,000
3110 London Dr, Olympia Fields, IL 60461
3,802 sqft | $95/sqft | built 1989 | 9% smaller (3,802 vs 4,182 sqft); Lot 20% smaller (18,000 vs 22,400 sqft); Same quality (Average)
$361,720
3045 Sheffield Cir, Olympia Fields, IL 60461
3,359 sqft | $101/sqft | built 1985 | Same quality (Average); Same neighborhood
$340,000
3145 London Dr, Olympia Fields, IL 60461
3,218 sqft | $103/sqft | built 1986 | Same quality (Average); Same neighborhood
$330,000

Recent comparable sales

No usable comparable sales are available in this data snapshot.

Public appraisal comparison for 2025. Prepared October 16, 2026. Appraisal source: Cook County Assessor's Office. Sales data checked in this snapshot: October 13, 2026. Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

No change in 2025 from 2024.

Assessor market value by tax year, with the change from the previous year listed
Tax year	Assessor market value	Change	Change %
2025	$370,000	$0	0.0%
2024	$370,000	$0	0.0%
2023	$370,000	+$79,430	+27.3%
2022	$290,570	$0	0.0%
2021	$290,570	$0	0.0%
2020	$290,570	—	—
5-year total		+$79,430	+27.3%