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Property overview

1824 S 21ST St

Philadelphia, PA 19145

Who owns 1824 S 21ST St, what the county and city have on record, and a measured sell-signal score — every fact dated and sourced.

Owner of recordJs Advisory LLCMailing address: 2027 E 8TH St, Brooklyn NY 11223Observed Sep 19, 2026 · Philadelphia Office of Property Assessment (property.phila.gov)
Parcel 482134800 · Public research profile
Motivated Seller IndexDRAFT MODEL
66/100
About 9 in 100 homes with these signals sold within four months (5.6× the Philadelphia 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 ↓

Aerial 2025 with parcel boundary · City of Philadelphia
Assessed valueUnavailable
Tax status$4,810 per the June 2022 Revenue list
Ownership tenureSince October 2025
Property typeRow 2 Sty Masonry, 2 stories, construction code A

THE INDEX

Why this MSI reads 66

Draft model

7 of 19 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-philadelphia-2026-09 weights nineteen public signals by how much each one changed the recorded four-month deed-transfer rate across all 465,000 Philadelphia single- and multi-family homes, checked on a holdout the model never saw (the top 0.5% of homes by score changed hands at 5.7× the citywide rate): trade permit +26, new-construction permit +18, vacant-structure violation +12, unsafe-structure violation +12, construction complaint +11, sheriff-sale flag (june 2022 list) +9, upkeep violation +3, maintenance complaint +3, delinquent property tax (june 2022 list) +3, structure violation +2, owner mails out of state +2, dangerous-building complaint +1, make-safe permit -2, bought since 2024 -3, owner mails elsewhere -13, no recorded sale -15, alteration permit -17, owned for 20 years or more -28, homestead exemption (owner-occupied) -35. 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
Row 2 Sty Masonry, 2 stories, construction code A
Observed Sep 19, 2026 · Philadelphia Office of Property Assessment (property.phila.gov)
Owner of record
Js Advisory LLC (mailing address 2027 E 8TH St, Brooklyn NY 11223)
Observed Sep 19, 2026 · Philadelphia Office of Property Assessment (property.phila.gov)
Assessed market value
$213,300 (taxable land $42,660 · taxable building $170,640); Philadelphia assesses at 100% of market value
Observed Sep 19, 2026 · Philadelphia Office of Property Assessment (property.phila.gov)
Homestead exemption
None on file
Observed Sep 19, 2026 · Philadelphia Office of Property Assessment (property.phila.gov)
Living area
1,540 sq ft
Observed Sep 19, 2026 · Philadelphia Office of Property Assessment (property.phila.gov)
Beds and baths
4 beds · 1 baths
Observed Sep 19, 2026 · Philadelphia Office of Property Assessment (property.phila.gov)
Year built
1920 (estimated), exterior condition 4 (OPA scale 1 best – 7 sealed)
Observed Sep 19, 2026 · Philadelphia Office of Property Assessment (property.phila.gov)
Lot size
1,021 sq ft
Observed Sep 19, 2026 · Philadelphia Office of Property Assessment (property.phila.gov)
Last recorded sale
$170,000, deed, October 28, 2025
Observed Sep 19, 2026 · Department of Records real-estate transfers (OpenDataPhilly)
Delinquent property tax (June 2022 list)
The Revenue Department's delinquency list of June 2022 shows $4,810 due for 2 tax years (2020–2021). The list is four years old; the current balance is on the Revenue Department site.
Observed Jun 1, 2022 · Revenue Department real-estate tax delinquencies, June 2022 (OpenDataPhilly)
Building permits
6 L&I permits in the last 12 months: Mechanical (addition and/or alterations) issued February 26, 2026; Residential Building (addition and/or alteration) issued January 23, 2026; Zoning (new construction, addition, gfa change) issued December 5, 2025
Observed Sep 19, 2026 · Licenses & Inspections property history (li.phila.gov)

Parcel reference: 482134800. Facts reflect the listed observation dates and may have changed since then.

OWNERSHIP AND TAXES

Research snapshot

Observed tax balance$4,810 per the June 2022 Revenue list
Delinquency period2020–2021
Last recorded transferOctober 28, 2025
Transfer amount$170,000

Observed Sep 19, 2026 · Revenue Department delinquency list (June 2022) and Department of Records transfers. A tax balance is not proof that a property is for sale.

CHANGES OVER TIME

Property timeline

  1. Permit: Mechanical

    Mechanical / Fuel Gas Permit.

    Licenses & Inspections property history (li.phila.gov) · checked Sep 19, 2026
  2. Permit: Residential Building

    Residential Building Permit.

    Licenses & Inspections property history (li.phila.gov) · checked Sep 19, 2026
  3. Permit: Zoning

    Zoning Permit.

    Licenses & Inspections property history (li.phila.gov) · checked Sep 19, 2026
  4. Recorded deed

    $170,000, deed.

    Department of Records real-estate transfers (OpenDataPhilly) · checked Sep 19, 2026
  5. Listed as tax delinquent

    Revenue Department list of June 2022: $4,810 due for 2 year(s).

    Revenue Department real-estate tax delinquencies, June 2022 (OpenDataPhilly) · 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.