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Property overview

1809 W 21ST Pl

Chicago, IL 60608

Who owns 1809 W 21ST Pl, what the county and city have on record, and a measured sell-signal score — every fact dated and sourced.

Owner of recordSinclair Lee IiiMailing address: 1809 W 21ST Pl Rear 4, Chicago IL 60608Observed Sep 19, 2026 · Cook County Assessor parcel addresses (open data)
Parcel 17-19-427-021-0000 · Public research profile
Motivated Seller IndexDRAFT MODEL
62/100
About 1.5 in 100 homes with these signals sold within six months (1.7× the Chicago 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 1809 W 21ST Pl, Chicago, IL
Aerial 2024 with parcel boundary · Cook County GIS
Assessed value$73,001.00 assessed (land $11,563.00 · building $61,438.00); Cook assesses class 2 at 10%, implying about $730,000.00 market value
Tax statusNot in the Clerk delinquent file
Ownership tenureSince March 2023
Property typeSingle-Family, 1 story, masonry (class 211)

THE INDEX

Why this MSI reads 62

Draft model

2 of 12 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-chicago-2026-09 weights twelve public signals by how much each one changed the recorded six-month sale rate across all 566,000 Chicago homes, checked on a holdout the model never saw (the top 1% of homes by score sold at 4.8× the citywide rate): vacancy complaint +22, new-construction or demolition permit +17, renovation permit +16, unpermitted-work complaint +16, upkeep complaint +15, bought within the last two years +11, building-violation complaint +9, delinquent property tax +8, owner mails out of state +4, permit valued at $25,000 or more +4, owner mails to the property -5, owned for 20 years or more -10. 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 story, masonry (class 211)
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Owner of record
Sinclair Lee Iii (mailing address 1809 W 21ST Pl Rear 4, Chicago IL 60608)
Observed Sep 19, 2026 · Cook County Assessor parcel addresses (open data)
Assessment year
2026
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Assessed value
$73,001.00 assessed (land $11,563.00 · building $61,438.00); Cook assesses class 2 at 10%, implying about $730,000.00 market value
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Living area
660 sq ft, full basement
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Beds and baths
2 beds · 1 bath
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Year built
1868 (condition rated Average)
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Lot size
3,125 sq ft
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Last recorded sale
$745,000.00 warranty deed, March 8, 2023
Observed Sep 19, 2026 · Cook County Assessor parcel sales (open data)
Building permits
New Construction issued March 12, 2026: self cert 2019 cbc: full building permit for new 3-story + basement multifamily residence (occupancy group r-5, type v-a construction) (base; Wrecking/Demolition issued April 21, 2026: wreck and remove a 2 story frame/masonry residence; New Construction issued June 22, 2026: self cert 2019 cbc: field revisions to existing permit #101076627 including layout revision per structural value engineering to accomodate b
Observed Sep 19, 2026 · City of Chicago Building Permits (open data)

Parcel reference: 17-19-427-021-0000. 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 transferMarch 8, 2023
Transfer amount$745,000.00

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

  1. Permit: New Construction

    SELF CERT 2019 CBC: FIELD REVISIONS TO EXISTING PERMIT #101076627 INCLUDING LAYOUT REVISION PER STRUCTURAL VALUE ENGINEERING TO ACCOMODATE B.

    City of Chicago Building Permits (open data) · checked Sep 19, 2026
  2. Permit: Wrecking/Demolition

    WRECK AND REMOVE A 2 STORY FRAME/MASONRY RESIDENCE.

    City of Chicago Building Permits (open data) · checked Sep 19, 2026
  3. Permit: New Construction

    SELF CERT 2019 CBC: FULL BUILDING PERMIT FOR NEW 3-STORY + BASEMENT MULTIFAMILY RESIDENCE (OCCUPANCY GROUP R-5, TYPE V-A CONSTRUCTION) (BASE.

    City of Chicago Building Permits (open data) · checked Sep 19, 2026
  4. Recorded sale

    $745,000.00, warranty deed.

    Cook County Assessor parcel sales (open data) · checked Sep 19, 2026
  5. Recorded sale

    $198,000.00, warranty deed.

    Cook County Assessor parcel sales (open data) · 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.