2026 assessment
$1.0M
OPA value, not a listing price
Apartment building report
1423 Diamond St
3 stories3,996 sqftRM1built 1915
Property at a glanceApartment building
Individual owner on record
2027 published assessment
$1.0M
Future roll, not the current tax bill
Location
1400 block of Diamond St
ZIP 19121
Neighborhood area
Brewerytown · Sharswood
Approximate · based on ZIP 19121
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 $1,037,700. It is not yet the billed-year tax basis.
- OPA assessment · 2016$428K 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 · 2017$428K 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 · 2018$476K 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 · 2019$512K 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 · 2020$513K 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 · 2021$513K 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 · 2022$513K 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 · 2023$538K 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 · 2024$538K 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 · 2025$1.0M 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$1.0M 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$1.0M 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 · 2017Deed / sale $707KA 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 · 2026-04-16Exterior Window and Door ReplacementThis 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 ↗
- L&I violation · 2023-03-01NEW WINDOW/DOORA dated L&I enforcement row. Read the cited code, required correction, status, and later inspections together; the title alone does not establish the property’s current condition.How L&I violations and orders work ↗
- Inspection · 2023-03-01L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2023-04-17L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2023-08-04L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2026-05-22L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- License · 2017-08-24LOPSONZSKI 1423 W DIAMOND ST LP: Rental 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 · 2023-10-22LOPSONZSKI 1423 W DIAMOND ST LP: Rental 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 ↗
- License · 2014-08-30TEMPLETON PROPERTIES II LP: Rental 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 · 2018-04-29TEMPLETON PROPERTIES II LP: Rental 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 ↗
- License · 2006-03-21DELTA LAND CO: Rental 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 · 2013-10-02DELTA LAND CO: Rental 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 / saleL&I violationPermitInspectionLicense
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 record13 events · exact dates, newest first
- InspectionL&I investigation
- PermitExterior Window and Door Replacement
- LicenseLOPSONZSKI 1423 W DIAMOND ST LP: Rental landlord or residential registration marked inactive
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationNEW WINDOW/DOOR
- InspectionL&I investigation
- LicenseTEMPLETON PROPERTIES II LP: Rental landlord or residential registration marked inactive
- LicenseLOPSONZSKI 1423 W DIAMOND ST LP: Rental landlord or residential registration initially issued
- Deed / saleDeed / sale $707K
- LicenseTEMPLETON PROPERTIES II LP: Rental landlord or residential registration initially issued
- LicenseDELTA LAND CO: Rental landlord or residential registration marked inactive
- LicenseDELTA LAND CO: Rental landlord or residential registration initially issued
Verify the public record
Property tax
$14,526/year estimated property tax
2026 taxable assessment $1,037,700 × 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 $1,037,700. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 8811476902026 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.”
Building report
Apartment building
Apartment building, recorded in the City's apartments category. The public record and owner trail follow.
What it is
Apartment building
Apts 5-50 Units Masonry
Owner
Individual owner on record
Individual name redacted
$ / sq ft
$260
above the $147 median for 2,826 apartments parcels citywide
Interior area
3,996 sqft
Lot size
2,165 sqft
Stories
3
Built
1915
Zoning
RM1
Block context
1400 block of Diamond St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 1421 Diamond St · 1425 Diamond St
L&I license dates · data through Jul 25, 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 25, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
LOPSONZSKI 1423 W DIAMOND ST LPInactive
Rental · Initial issue date Aug 24, 2017 · Terminal license date Oct 22, 2023
TEMPLETON PROPERTIES II LPInactive
Rental · Initial issue date Aug 30, 2014 · Terminal license date Apr 29, 2018
DELTA LAND COInactive
Rental · Initial issue date Mar 21, 2006 · Terminal license date Oct 2, 2013
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 13 dated rows
- InvestigationL&I investigation
Case CF-2023-016402 · PASSED
The cited inspection visit was marked passed.
- PermitExterior Window and Door Replacement
Permit GM-2026-002682 · Issued
**Existing Philadelphia Historic Property** For replacement of existing exterior windows and/or doors in accordance with the attached EZ Permit Windows & Doors Standard. Failure to comply with the attached EZ Permit Windows & Doors Standard shall result in revocation of this permit. To comply violation CF-2023-016402 by installing historic doors into front entry.
- License terminal eventLOPSONZSKI 1423 W DIAMOND ST LP: Rental landlord or residential registration marked inactive
License 749809 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- InvestigationL&I investigation
Case CF-2023-016402 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2023-016402 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationNEW WINDOW/DOOR
Case CF-2023-016402 · Violation VI-2023-012422 · Code A-301.1/35 · COMPLIED
Resolution: COMPLIED - LICENSE/CERTIFICATE/REPORT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL&I investigation
Case CF-2023-016402 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- License terminal eventTEMPLETON PROPERTIES II LP: Rental landlord or residential registration marked inactive
License 640095 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License issue eventLOPSONZSKI 1423 W DIAMOND ST LP: Rental landlord or residential registration initially issued
License 749809 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- Recorded transfer$707K transfer
2017
- License issue eventTEMPLETON PROPERTIES II LP: Rental landlord or residential registration initially issued
License 640095 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License terminal eventDELTA LAND CO: Rental landlord or residential registration marked inactive
License 360757 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License issue eventDELTA LAND CO: Rental landlord or residential registration initially issued
License 360757 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
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 26, 2026, 3:35 PM 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)