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Property overview

1821 W Haddon Ave

Chicago, IL 60622

Who owns 1821 W Haddon Ave, what the county and city have on record, and a measured sell-signal score — every fact dated and sourced.

Owner of recordPiotr KowalkowskiMailing address: 5639 N Austin Ave, Chicago IL 60646Observed Sep 19, 2026 · Cook County Assessor parcel addresses (open data)
Parcel 17-06-404-003-0000 · Public research profile
Motivated Seller IndexDRAFT MODEL
96/100
About 7 in 100 homes with these signals sold within six months (8.9× the Chicago rate)100% of model checks have usable evidence

A measured sell-signal score from public records: 4 positive signals 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 1821 W Haddon Ave, Chicago, IL
Aerial 2024 with parcel boundary · Cook County GIS
Assessed value$80,000.00 assessed (land $24,012.00 · building $55,988.00); Cook assesses class 2 at 10%, implying about $800,000.00 market value
Tax statusNot in the Clerk delinquent file
Ownership tenureSince June 2025
Property typeMulti-Family, 2 story, frame (class 211)

THE INDEX

Why this MSI reads 96

Draft model

4 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
Multi-Family, 2 story, frame (class 211)
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Owner of record
Piotr Kowalkowski (mailing address 5639 N Austin Ave, Chicago IL 60646)
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
$80,000.00 assessed (land $24,012.00 · building $55,988.00); Cook assesses class 2 at 10%, implying about $800,000.00 market value
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Living area
3,135 sq ft, slab basement
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Beds and baths
8 beds · 3 bath
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Year built
1878 (condition rated Average)
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Lot size
2,760 sq ft
Observed Sep 19, 2026 · Cook County Assessor (open data + PIN page)
Last recorded sale
$525,000.00 warranty deed, June 1, 2025
Observed Sep 19, 2026 · Cook County Assessor parcel sales (open data)
Building permits
Renovation/Alteration issued November 25, 2025: proposed 2 car garage, rear patio, rear stair/landing, 6' wood fence, and interior renovations to convert an existing 2 story/2 unit residen; Renovation/Alteration issued January 26, 2026: spr 2019 cbrc: partial interior remodel of existing basement for existing 2-story, type va frame, 33' ht., 3-unit residence with existing ba; Renovation/Alteration issued March 6, 2026: spr 2019 cbrc: revision to permit #101077062 to revise electrical riser diagram for revised wire size and sub-panel (occupancy group r-2; ty
Observed Sep 19, 2026 · City of Chicago Building Permits (open data)
311 complaints
1 in the last 12 months: sanitation code violation (1)
Observed Sep 19, 2026 · City of Chicago 311 Service Requests (open data)

Parcel reference: 17-06-404-003-0000. 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 transferJune 1, 2025
Transfer amount$525,000.00

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: Renovation/Alteration

    SPR 2019 CBRC: REVISION TO PERMIT #101077062 TO REVISE ELECTRICAL RISER DIAGRAM FOR REVISED WIRE SIZE AND SUB-PANEL (OCCUPANCY GROUP R-2; TY.

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

    SPR 2019 CBRC: PARTIAL INTERIOR REMODEL OF EXISTING BASEMENT FOR EXISTING 2-STORY, TYPE VA FRAME, 33' HT., 3-UNIT RESIDENCE WITH EXISTING BA.

    City of Chicago Building Permits (open data) · checked Sep 19, 2026
  3. Permit: Renovation/Alteration

    PROPOSED 2 CAR GARAGE, REAR PATIO, REAR STAIR/LANDING, 6' WOOD FENCE, AND INTERIOR RENOVATIONS TO CONVERT AN EXISTING 2 STORY/2 UNIT RESIDEN.

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

    $525,000.00, 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.