Property overview

15809 St Louis Ave

Markham, IL 60428

Who owns 15809 St Louis Ave, what the county and city have on record, and a measured sell-signal score — every fact dated and sourced.

Owner of recordDavid BeckbergerMailing address: 15813 S St Louis Av, Markham IL 60428Observed Sep 19, 2026 · Cook County Assessor parcel addresses (open data)

Parcel 28-14-426-004-0000 · Public research profile

Motivated Seller IndexDRAFT MODEL

62/100

About 1 in 100 homes with these signals sold within six months (1.6× the suburban Cook County rate)100% of model checks have usable evidence

A measured sell-signal score from public records: 1 positive signal observed. It is a base rate for homes like this, not a statement about this owner. How it works ↓

2024 aerial photo of the parcel at 15809 St Louis Ave, Markham, IL — Aerial 2024 with parcel boundary · Cook County GIS

Assessed value$7,008.00 assessed (land $1,015.00 · building $5,993.00); Cook assesses class 2 at 10%, implying about $70,000.00 market value

Tax statusNot in the Clerk delinquent file

Ownership tenureUnknown

Property typeSingle-Family, 1.5 story, frame (class 204)

THE INDEX

Why this MSI reads 62

Draft model

1 of 6 checked public signals observed, covering 100% of the model. The score is public; the signal-by-signal reasons, source documents, and owner details are in LienSuite.

Method and limits. MSI v0.2-cook-suburbs-2026-09 weights the six public signals available county-wide by how much each one changed the recorded six-month sale rate across all 677,000 suburban Cook County homes, checked on a holdout the model never saw (the top 1% of homes by score sold at 3.0× the suburban rate); the six City of Chicago signals cannot be checked outside the city and are left out of both the score and its coverage: bought within the last two years +9, delinquent property tax +9, owner mails out of state +13, permit valued at $25,000 or more +12, owner mails to the property +2, owned for 20 years or more -3. The "in 100 homes" figure is the model's fitted probability for this combination of signals. It describes homes like this one in aggregate; it is not a claim about this owner's intentions, and it is not LienSuite's paid deal score.

THE RECORD

Property details

Dated sources

Property type: Single-Family, 1.5 story, frame (class 204)
Owner of record: David Beckberger (mailing address 15813 S St Louis Av, Markham IL 60428)
Assessment year: 2026
Assessed value: $7,008.00 assessed (land $1,015.00 · building $5,993.00); Cook assesses class 2 at 10%, implying about $70,000.00 market value
Living area: 2,430 sq ft, slab basement
Beds and baths: 4 beds · 2 bath
Year built: 1938 (condition rated Average)
Lot size: 3,690 sq ft
Adjacent lot: Same owner of record also holds the vacant lot at 15813 St Louis Ave, PIN 28-14-426-006-0000 (class 241) — Assessor class 241, vacant land under common ownership with this residence.
Additional parcel: The same owner of record holds one more parcel at this address: PIN 28-14-426-005-0000 (class 204, 3,690 sq ft). This page covers the improved parcel; the others are shown here, not as pages of their own.
Building permits: 1 permit recorded by the Assessor in the last 12 months (latest October 24, 2025, $30,101.00 declared value)

Parcel reference: 28-14-426-004-0000. Facts reflect the listed observation dates and may have changed since then.

OWNERSHIP AND TAXES

Research snapshot

Observed tax balanceNot in the Clerk delinquent file

Delinquency period—

Last recorded transfer—

Transfer amount—

Observed Sep 19, 2026 · Cook County Clerk delinquent file (balance) and Assessor parcel sales (transfer). A tax balance is not proof that a property is for sale.

CHANGES OVER TIME

Property timeline

Sep 19, 2026
Adjacent vacant lot under the same owner
15813 ST LOUIS AVE (PIN 28144260060000).
Cook County Assessor (open data + PIN page) · checked Sep 19, 2026

NEARBY

More records nearby

Facts on this page reflect their observation dates. Confirm the parcel and current records with the county before acting.