2026 assessment
$1.8M
OPA value, not a listing price
Industrial property report
500-10 N 12th St
1 story15,720 sqftICMXbuilt 1945
Property at a glanceIndustrial building
Mason Investment Partners
2027 published assessment
$1.8M
Future roll, not the current tax bill
Location
500 block of N 12th St
ZIP 19123
Neighborhood area
Northern Liberties · Callowhill
Approximate · based on ZIP 19123
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 $1,807,800. It is not yet the billed-year tax basis.
- OPA assessment · 2016$922K 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$922K 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$1.2M 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$1.3M 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$1.3M 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$1.3M 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$1.3M 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$1.7M 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$1.7M 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$1.8M 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$1.8M 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$1.8M 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 ↗
- L&I violation · 2010-01-15CAL PROHIBITED CONDUCTA 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 ↗
- L&I violation · 2010-01-15CAL PROHIBITED CONDUCTA 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 ↗
- L&I violation · 2015-08-04VACANT LOT KEEP CLEAN GET LICA 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 ↗
- L&I violation · 2015-08-04CLIP VIOLATION NOTICEA 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 ↗
- L&I violation · 2016-10-19CO- NEW USE OCCUPIED PRE-COA 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 ↗
- L&I violation · 2016-10-19ANNUAL CERT FIRE SUPPA 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 · 2016-10-19BC INSP (likely: building-code inspection)Legacy inspection shorthand; confirm the inspection type and scope in the City case file.What Philadelphia inspections check ↗
- Inspection · 2016-10-19CI INSPA 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 · 2009-12-31BC INSP (likely: building-code inspection)Legacy inspection shorthand; confirm the inspection type and scope in the City case file.What Philadelphia inspections check ↗
- Inspection · 2009-12-31BC INSP (likely: building-code inspection)Legacy inspection shorthand; confirm the inspection type and scope in the City case file.What Philadelphia inspections check ↗
- Inspection · 2010-04-05BC INSP (likely: building-code inspection)Legacy inspection shorthand; confirm the inspection type and scope in the City case file.What Philadelphia inspections check ↗
- Inspection · 2010-04-15BC INSP (likely: building-code inspection)Legacy inspection shorthand; confirm the inspection type and scope in the City case file.What Philadelphia inspections check ↗
- Inspection · 2016-11-28BC INSP (likely: building-code inspection)Legacy inspection shorthand; confirm the inspection type and scope in the City case file.What Philadelphia inspections check ↗
- Inspection · 2016-11-28CI INSPA 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 · 2017-01-09BC INSP (likely: building-code inspection)Legacy inspection shorthand; confirm the inspection type and scope in the City case file.What Philadelphia inspections check ↗
- Inspection · 2017-01-09CI INSPA 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 · 2017-03-31PRECOURT (likely: pre-court compliance inspection)A follow-up before or during enforcement escalation; confirm the case sequence in the City file.What Philadelphia inspections check ↗
- License · 2011-08-25PUI HIN TSANG: Dumpster License - Private Property L&I license filing 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 · 1999-10-12SUN PROD CO: Dumpster License - Private Property L&I license filing 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 · 2010-11-08SUN PROD CO: Dumpster License - Private Property L&I license filing 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 assessmentAssessmentL&I violationInspectionLicense
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 record20 events · exact dates, newest first
- InspectionPRECOURT (likely: pre-court compliance inspection)
- InspectionBC INSP (likely: building-code inspection)
- InspectionCI INSP
- InspectionBC INSP (likely: building-code inspection)
- InspectionCI INSP
- L&I violationCO- NEW USE OCCUPIED PRE-CO
- L&I violationANNUAL CERT FIRE SUPP
- InspectionBC INSP (likely: building-code inspection)
- InspectionCI INSP
- L&I violationVACANT LOT KEEP CLEAN GET LIC
- L&I violationCLIP VIOLATION NOTICE
- LicensePUI HIN TSANG: Dumpster License - Private Property L&I license filing initially issued
- LicenseSUN PROD CO: Dumpster License - Private Property L&I license filing marked inactive
- InspectionBC INSP (likely: building-code inspection)
- InspectionBC INSP (likely: building-code inspection)
- L&I violationCAL PROHIBITED CONDUCT
- L&I violationCAL PROHIBITED CONDUCT
- InspectionBC INSP (likely: building-code inspection)
- InspectionBC INSP (likely: building-code inspection)
- LicenseSUN PROD CO: Dumpster License - Private Property L&I license filing initially issued
Verify the public record
Property tax
$25,306/year estimated property tax
2026 taxable assessment $1,807,800 × 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 $1,807,800. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 8840326002026 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
Industrial property
Industrial building, recorded in the City's industrial category. The public record and owner trail follow.
What it is
Industrial building
Ind Warehouse Masonry
Owner
Mason Investment Partners
$ / sq ft
$115
above the $70 median for 3,574 industrial parcels citywide
Corridor
Spring Garden/9th-13th
city commercial corridor
Interior area
15,720 sqft
Lot size
21,719 sqft
Stories
1
Built
1945
Zoning
ICMX
Recorded owner
Who's behind it
Mason Investment Partners · corporate / LLC owner
• Owns 2 properties across Philadelphia under this name, assessed at $2.0M combined
• Tax bills mail to 1601 Washington Ave, Philadelphia PA, 19123
Block context
500 block of N 12th St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 500s N 12th St · 520 N 12th St
L&I licenses checked through Jul 29, 2026
No business or residential license records
No business license or residential registration matched this OPA parcel in the latest City data.
Open every source row 20 dated rows
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 560400 · PASSED
A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.
- InvestigationBC INSP (likely: building-code inspection)
Case 560394 · PASSED
Legacy inspection shorthand; confirm the inspection type and scope in the City case file. The cited inspection visit was marked passed.
- InvestigationCI INSP
Case 560400 · CLOSED
City marked the record closed; open the case for the closing reason.
- InvestigationBC INSP (likely: building-code inspection)
Case 560394 · FAILED
Legacy inspection shorthand; confirm the inspection type and scope in the City case file. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationCI INSP
Case 560400 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationCO- NEW USE OCCUPIED PRE-CO
Case 560394 · Violation 4155734 · Code A-701.1/3 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationANNUAL CERT FIRE SUPP
Case 560400 · Violation 4192615 · Code FC-915.1/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationBC INSP (likely: building-code inspection)
Case 560394 · FAILED
Legacy inspection shorthand; confirm the inspection type and scope in the City case file. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationCI INSP
Case 560400 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationVACANT LOT KEEP CLEAN GET LIC
Case 495592 · Violation 3664634 · Code PM-306.0/91 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- ViolationCLIP VIOLATION NOTICE
Case 495592 · Violation 3664633 · Code CP-01 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- License issue eventPUI HIN TSANG: Dumpster License - Private Property L&I license filing initially issued
License 542491 · Active
License event. Registration does not prove present operation or storefront occupancy.
- License terminal eventSUN PROD CO: Dumpster License - Private Property L&I license filing marked inactive
License 279494 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- InvestigationBC INSP (likely: building-code inspection)
Case 224631 · PASSED
Legacy inspection shorthand; confirm the inspection type and scope in the City case file. The cited inspection visit was marked passed.
- InvestigationBC INSP (likely: building-code inspection)
Case 224622 · CLOSED
Legacy inspection shorthand; confirm the inspection type and scope in the City case file. City marked the record closed; open the case for the closing reason.
- ViolationCAL PROHIBITED CONDUCT
Case 224622 · Violation 1568818 · Code 19-2602.4/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCAL PROHIBITED CONDUCT
Case 224631 · Violation 1568901 · Code 19-2602.4/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationBC INSP (likely: building-code inspection)
Case 224622 · FAILED
Legacy inspection shorthand; confirm the inspection type and scope in the City case file. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationBC INSP (likely: building-code inspection)
Case 224631 · FAILED
Legacy inspection shorthand; confirm the inspection type and scope in the City case file. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- License issue eventSUN PROD CO: Dumpster License - Private Property L&I license filing initially issued
License 279494 · 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
- Imagery: Street photo © Google · Aerial © Esri, Maxar
Methodology & freshness
This report was assembled Jul 30, 2026, 4:34 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)