2026 assessment
$328K
OPA value, not a listing price
Mixed-use property report
1816 S 21st St
2 bd1 ba2 stories1,734 sqftCMX2built 1920
Property at a glanceApartment building
Kat Property Investments LLC
2027 published assessment
$328K
Future roll, not the current tax bill
Location
1800 block of S 21st St
ZIP 19145
Neighborhood area
Girard Estate · South Philadelphia
Approximate · based on ZIP 19145
Assessment and City record timeline
The line tracks this property’s published City assessment. Markers show deeds, permits, inspections, licenses, violations, certifications, and appeals on their recorded dates. Select one to read the filing.
Assessments are tax-roll values, not sale prices or appraisals. OPA has published a 2027 assessment of $328,100. It is not yet the billed-year tax basis.
- OPA assessment · 2025$328K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2026$328K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2027$328K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- Deed / sale · 2002Deed / sale $6KA recorded real-estate document or transfer event. The amount and date can be useful history, but the underlying deed and transfer-tax filing control the parties, consideration, and legal effect.How to read the recorded document ↗
- Deed / sale · 2006Deed / sale $244KA recorded real-estate document or transfer event. The amount and date can be useful history, but the underlying deed and transfer-tax filing control the parties, consideration, and legal effect.How to read the recorded document ↗
- Deed / sale · 2006Deed / sale $135KA recorded real-estate document or transfer event. The amount and date can be useful history, but the underlying deed and transfer-tax filing control the parties, consideration, and legal effect.How to read the recorded document ↗
- Deed / sale · 2006Deed / sale $168KA recorded real-estate document or transfer event. The amount and date can be useful history, but the underlying deed and transfer-tax filing control the parties, consideration, and legal effect.How to read the recorded document ↗
- Deed / sale · 2006Deed / sale $156KA recorded real-estate document or transfer event. The amount and date can be useful history, but the underlying deed and transfer-tax filing control the parties, consideration, and legal effect.How to read the recorded document ↗
- Deed / sale · 2020Deed / sale $155KA recorded real-estate document or transfer event. The amount and date can be useful history, but the underlying deed and transfer-tax filing control the parties, consideration, and legal effect.How to read the recorded document ↗
- Permit · 2021-10-22AlterationsThis permit category usually covers construction, repair, alteration, addition, or occupancy work. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- License · 2016-06-07LISA A LEE: Vacant Residential Property / Lot landlord or residential registration initially issuedA City license record tied to an activity or property use. Its issue, expiration, inactive, and status fields—not the category alone—show what was recorded for this date.Philadelphia L&I licenses and property records ↗
- License · 2017-08-05LISA A LEE: Vacant Residential Property / Lot landlord or residential registration marked inactiveA City license record tied to an activity or property use. Its issue, expiration, inactive, and status fields—not the category alone—show what was recorded for this date.Philadelphia L&I licenses and property records ↗
Property assessmentAssessmentDeed / salePermitLicense
Scroll horizontally to move through the years. Each icon sits on its recorded date; records without a day are labeled and centered within their year. Select one to explain the filing.
Highlight
Every dated record9 events · exact dates, newest first
- PermitAlterations
- Deed / saleDeed / sale $155K
- LicenseLISA A LEE: Vacant Residential Property / Lot landlord or residential registration marked inactive
- LicenseLISA A LEE: Vacant Residential Property / Lot landlord or residential registration initially issued
- Deed / saleDeed / sale $244K
- Deed / saleDeed / sale $135K
- Deed / saleDeed / sale $168K
- Deed / saleDeed / sale $156K
- Deed / saleDeed / sale $6K
Verify the public record
Property tax
$4,593/year estimated property tax
2026 taxable assessment $328,100 × 1.3998%. This is an estimate, not a bill or account balance. The City maintains payments, credits, interest, and the current amount due.
OPA has published a 2027 assessment of $328,100. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 8710001412026 taxable assessment equals the full assessed value.
Historical delinquency sources No current conclusion
This parcel did not match the June 2022 delinquency snapshot. That absence does not confirm the account is current today.
For a purchase, refinance, or closing, request the City’s official Property Payoff statement in Tax Center under “More options.”
Property report
Mixed-use property
Apartment building, recorded in the City's mixed-use category. The public record and owner trail follow.
What it is
Apartment building
Row Conv/Apt 2 Sty Mason
Owner
Kat Property Investments LLC
$ / sq ft
$189
assessed value ÷ interior sqft
Interior area
1,734 sqft
Lot size
1,096 sqft
Stories
2
Built
1920
Zoning
CMX2
Recorded owner
Who's behind it
Kat Property Investments LLC · corporate / LLC owner
• Owns 6 properties across Philadelphia under this name, assessed at $1.3M combined
• Tax bills mail to 5300 Wynnefield Ave, Philadelphia PA, 19131
Block context
1800 block of S 21st St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 1818 S 21st St · 1820 S 21st St
L&I license dates · data through Jul 21, 2026
Business licenses at this address Latest pull
What L&I has registered at this OPA parcel, newest initial license date first.
No L&I business license is on record at this address in data through Jul 21, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
LISA A LEEInactive
Vacant Residential Property / Lot · Initial issue date Jun 7, 2016 · Terminal license date Aug 5, 2017
A license is an L&I registration, not proof that a business is open, operating today, or located at this storefront. Dates are license dates. Events are deduped by parcel, business identity, and license type, so a renewal is not shown as another opening. Other permit and filing types remain in the full source ledger.
Open every source row 9 dated rows
- PermitAlterations
Permit PP-2021-019159 · Completed
Curb trap and fresh air inlet
- Recorded transfer$155K transfer
2020
- License terminal eventLISA A LEE: Vacant Residential Property / Lot landlord or residential registration marked inactive
License 704066 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License issue eventLISA A LEE: Vacant Residential Property / Lot landlord or residential registration initially issued
License 704066 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- Recorded transfer$244K transfer
2006
- Recorded transfer$135K transfer
2006
- Recorded transfer$168K transfer
2006
- Recorded transfer$156K transfer
2006
- Recorded transfer$6K transfer
2002
Where this comes from
- Assessment, spec sheet & owner: OPA Property Assessments, Office of Property Assessment
- Sales & deed history: Realty Transfer Tax records, Recorder of Deeds
- Permits, violations & inspections: L&I Property History · Atlas
- Tax delinquency snapshot · June 2022: Real Estate Tax Delinquencies, Dept. of Revenue
- Historical tax ledger & liens · through 2016: Real Estate Tax Balances, Dept. of Revenue
- Current property-tax balance: Verify with Philadelphia Revenue
- Zoning appeals: L&I & Zoning Board appeals
- Neighborhood income & rents: US Census ACS 5-year estimates
- Historical mortgage rates: Freddie Mac Primary Mortgage Market Survey, annual averages
- Imagery: Street photo © Google · Aerial © Esri, Maxar
Methodology & freshness
This report was assembled Jul 22, 2026, 7:54 AM ET. Available City datasets are queried from OpenDataPhilly (phl.carto.com) and the cited City ArcGIS feeds; record queries paginate rather than silently taking a first page. For this property: Permits: queried · Violations: queried · Investigations: queried · Appeals: queried · Licenses: queried · Building certifications: queried. “Unavailable” means the source query failed or was not supplied, not “no record.” Reports re-pull on view after seven days and on an overnight rolling schedule; citywide benchmarks recompute weekly. Source dates still govern: the parcel-level tax-delinquency snapshot is June 2022 and the separate detailed tax ledger ends in 2016, so neither establishes today’s balance. The live balance and date-effective payoff must be verified in Tax Center. AI-written passages are grounded in the assembled record and rejected if they state a number the record does not hold.
Official city record ↗ · L&I history ↗ · See the whole block · Download this record (JSON)