2026 taxable assessment $0 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $9,935,300; it is not the 2026 billed-year value.
Property report
416-20 Walnut St
35,382 sqft · CMX4 · built 1907
School · Individual owner on record · fully tax-exempt (2026 OPA). On the 400 block of Walnut St.
BlockReport AI · cited public records
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Property summary
Assessment$9,935,3002026 OPA assessment · 2027: $9,935,300
Last sale$92KRecorded 2008
Est. tax bill$0/year2026 OPA · full assessment exemption shown
Tax delinquencyNo 2022 matchNot proof account is current
Permits2Every fetched City permit
Violations0 open13 historical across 5 cases
“Open” reflects records available then historical records keep their source dates estimates are labeled
Question or correct this record
BlockReport can explain a discrepancy, but it cannot rewrite an official City record. Use the agency that owns the underlying fact:
Property tax
The estimate, live balance, and back-tax record are different.
BlockReport can calculate the annual tax from the City’s taxable assessment. Payments, credits, interest, and a current amount due live separately in Philadelphia Tax Center.
A Tax Center balance is net of bills, payments, credits, interest, and adjustments. A credit—or an amount due—is not automatically “back taxes.”
OPA 7715250002026 OPA shows a zero or de minimis taxable assessment. The open assessment split does not establish the exemption's legal basis, continuing eligibility, or treatment after a transfer.
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.”
What stands out
From the public recordPermit on record
Record summaryAddition and/or Alterations permit recorded in 2023.
View supporting records →The property record, over time
Every dated deed, permit, inspection, license, violation, certification, and appeal is placed on the City’s annual assessment line. Select a point to read what happened; the line is an assessment history—not a sale-price chart or appraisal. OPA has also published a 2027 assessment of $9,935,300; it is not yet the billed-year tax basis.
Assessment history · all dated City records marked on the line
- OPA assessment · 2016$9.3M 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 · 2017$9.3M 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 · 2018$9.9M 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$9.9M 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$9.9M 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$9.9M 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$9.9M 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$9.9M 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$9.9M 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$9.9M 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$9.9M 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$9.9M 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 ↗
- Permit · 2018-08-02Major alterationA broad legacy permit work category for a substantial building alteration. It can include changed layouts, partitions, fixtures, finishes, structural work, or occupancy-related work, but only the approved scope and plans say what this permit actually authorized; separate trade permits may be required.What Philadelphia building permits can cover ↗
- Permit · 2023-04-19Addition and/or AlterationsThis 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 · 2008-12-05VIOL C&I MESSAGEA 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 · 2008-12-05ANNUAL 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 ↗
- L&I violation · 2008-12-05FIRE PROT SYS ANNUAL TESTA 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 · 2008-12-05FIRE EXTING-NEEDS INSP/TAG (Fire extinguisher needs inspection and a current service tag)Fire extinguisher needs inspection and a current service tagHow L&I violations and orders work ↗
- L&I violation · 2008-12-05ANNUAL CERT STANDBY/EMERG LITEA 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 · 2008-12-05CI 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 ↗
- L&I violation · 2008-05-06FA/SUPP INSTALL PERMITA 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 · 2008-05-06FIRE-INSTALLERS CERTA 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 · 2021-09-08TESTING/MAINTENANCEA 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 · 2025-01-30FACADESA 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 · 2009-11-20CI 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 · 2010-02-24CI 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 · 2021-12-23L&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 · 2022-03-04L&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 · 2025-06-03L&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 ↗
- Certification · 2021-07-07Sprinkler CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2021-07-27Special Hazards CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2021-08-12Fire Alarm CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2022-07-19Fire Alarm CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2022-07-19Sprinkler CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2023-07-11Sprinkler CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2023-07-11Fire Alarm CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2024-07-02Special Hazards CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2024-07-02Fire Alarm CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2024-07-02Sprinkler CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2025-05-07Facade ReportA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2025-06-30Sprinkler CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2025-06-30Fire Alarm CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2026-06-24Fire Alarm CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2026-06-24Special Hazards CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2026-06-24Sprinkler CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
Property assessmentAssessmentL&I violationPermitInspectionCertification
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 record33 events · exact dates, newest first
- CertificationFire Alarm Certification
- CertificationSpecial Hazards Certification
- CertificationSprinkler Certification
- CertificationSprinkler Certification
- CertificationFire Alarm Certification
- InspectionL&I investigation
- CertificationFacade Report
- L&I violationFACADES
- CertificationSpecial Hazards Certification
- CertificationFire Alarm Certification
- CertificationSprinkler Certification
- CertificationSprinkler Certification
- CertificationFire Alarm Certification
- PermitAddition and/or Alterations
- CertificationFire Alarm Certification
- CertificationSprinkler Certification
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationTESTING/MAINTENANCE
- CertificationFire Alarm Certification
- CertificationSpecial Hazards Certification
- CertificationSprinkler Certification
- PermitMajor alteration
- InspectionCI INSP
- InspectionCI INSP
- L&I violationVIOL C&I MESSAGE
- L&I violationANNUAL CERT FIRE SUPP
- L&I violationFIRE PROT SYS ANNUAL TEST
- L&I violationFIRE EXTING-NEEDS INSP/TAG (Fire extinguisher needs inspection and a current service tag)
- L&I violationANNUAL CERT STANDBY/EMERG LITE
- InspectionCI INSP
- L&I violationFA/SUPP INSTALL PERMIT
- L&I violationFIRE-INSTALLERS CERT
Not a houseProperty report
This is a school, not a home, and OPA shows a full or near-full assessment exemption whose basis must be verified. A $0 assessment-based tax estimate does not prove the live Tax Center account has no prior-period balance or other charges. Homeowner investment tools are hidden; the assembled public-source record remains below.
What it is
School
School 7 Sty Masonry+Oth
Owner
Individual owner on record
Public / institutional
OPA tax treatment
Full assessment exemption shown
2026 OPA taxable assessment $0 · basis and live balance require separate verification
$ / sq ft
$281
above the $130 median for 12,035 commercial parcels citywide
Corridor
Old City
city commercial corridor
Assessed value
$9,935,300
2026 OPA · 2027: $9,935,300
Interior area
35,382 sqft
Lot size
4,543 sqft
Built
1907
Zoning
CMX4
Records behind the chart
Browse the source ledger
The chart above is the primary timeline. This drawer preserves every underlying dated row and its filed status for source-level review.
Browse 42 dated records deeds, permits, inspections, licenses, violations, certifications & appeals
- CertificationFire Alarm Certification
Certification BC-2026-018965 · Certified
Expires 2027-06-24
- CertificationSpecial Hazards Certification
Certification BC-2026-018966 · Certified
Expires 2027-06-24
- CertificationSprinkler Certification
Certification BC-2026-018968 · Certified
Expires 2027-06-24
- CertificationSprinkler Certification
Certification BC-2025-017763 · Certified
Expires 2026-06-30
- CertificationFire Alarm Certification
Certification BC-2025-017762 · Certified
Expires 2026-06-30
- InvestigationL&I investigation
Case CF-2025-006543 · PASSED
The cited inspection visit was marked passed.
- CertificationFacade Report
Certification BC-2025-014499 · Safe with Repair
Expires 2030-05-07
- InvestigationL&I investigation
Case CF-2025-006543 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationFACADES
Case CF-2025-006543 · Violation VI-2025-005247 · Code PM15-315.2 · COMPLIED
Resolution: COMPLIED - LICENSE/CERTIFICATE/REPORT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- CertificationSpecial Hazards Certification
Certification BC-2024-019995 · Certified
Expires 2025-07-02
- CertificationFire Alarm Certification
Certification BC-2024-019993 · Certified
Expires 2025-07-02
- CertificationSprinkler Certification
Certification BC-2024-019996 · Certified
Expires 2025-07-02
- CertificationSprinkler Certification
Certification BC-2023-015260 · Certified
Expires 2024-07-11
- CertificationFire Alarm Certification
Certification BC-2023-015259 · Certified
Expires 2024-07-11
- PermitAddition and/or Alterations
Permit FP-2023-000154 · Completed
FOR ALTERATIONS TO AN EXISTING FIRE SUPPRESSION SYSTEM TO INCLUDE DEMOLITION OF PORTIONS OF AN EXISTING HALON SYSTEM, THE INSTALLATION OF NEW AUTOMATIC WET SPRINKER SYSTEM HEADS AT THE SUB-BASEMENT, BASEMENT, AND 3RD FLOOR LEVELS, AND THE INSTALLATION OF ONE (1) NEW STANDPIPE IN AN EXISTING INTERIOR EXIT STAIRWAY ENCLOSURE. ALL WORK TO BE DONE PER APPROVED PLANS AND IN ACCORDANCE WITH NFPA 13 AND NFPA 14 BY A FIRE SUPPRESSION CONTRACTOR LICENSED BY THE CITY OF PHILADELPHIA. IF SITE CONDITIONS VARY, CONTACT DESIGN ENGINEER PRIOR TO START OF WORK.
- CertificationFire Alarm Certification
Certification BC-2022-010799 · Certified
Expires 2023-07-19
- CertificationSprinkler Certification
Certification BC-2022-010801 · Certified
Expires 2023-07-19
- CertificationFire Alarm Certification
Certification BC-2022-010806 · Certified
Expires 2023-07-19
- InvestigationL&I investigation
Case CF-2021-087610 · PASSED
The cited inspection visit was marked passed.
- InvestigationL&I investigation
Case CF-2021-087610 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationTESTING/MAINTENANCE
Case CF-2021-087610 · Violation VI-2021-063035 · Code FC-13-904.11.2 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- CertificationFire Alarm Certification
Certification BC-2021-003032 · Deficient
- CertificationSpecial Hazards Certification
Certification BC-2021-003930 · Certified
Expires 2022-07-27
- CertificationSprinkler Certification
Certification BC-2021-002748 · Certified
Expires 2022-07-07
- PermitMajor alteration
Permit 898771 · COMPLETED
ERECTION OF A SIDEWALK SHELTER PLATFORM AS PER ENGINEERED PLANS. STREETS DEPARTMENT PERMIT IS REQUIRED FOR SIDEWALK CLOSURE PRIOR TO THE START WORK.(ANY MASONRY REPAIR NEEDS TO BE APPROVED BY THE PHILADELPHIA HISTORIC APPROVAL) NO CHANGES TO THE WINDOWS OR EXTERIOR DOORS
- InvestigationCI INSP
Case 187381 · PASSED
The cited inspection visit was marked passed.
- InvestigationCI INSP
Case 159022 · PASSED
The cited inspection visit was marked passed.
- InvestigationCI INSP
Case 158811 · PASSED
The cited inspection visit was marked passed.
- InvestigationCI INSP
Case 158811 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationCI INSP
Case 159022 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationCI INSP
Case 187381 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationVIOL C&I MESSAGE
Case 187381 · Violation 1223772 · Code A-000.0/10 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationFIRE PROT SYS ANNUAL TEST
Case 187381 · Violation 1223775 · Code FC-914.1/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationANNUAL CERT FIRE SUPP
Case 187381 · Violation 1223773 · Code FC-914.1/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationFIRE EXTING-NEEDS INSP/TAG (Fire extinguisher needs inspection and a current service tag)
Case 187381 · Violation 1223776 · Code FC-906.2/2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationANNUAL CERT STANDBY/EMERG LITE
Case 187381 · Violation 1223774 · Code FC-914.1/5 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationANNUAL CERT FIRE SUPP
Case 159022 · Violation 1529030 · Code FC-914.1/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationVIOL C&I MESSAGE
Case 159022 · Violation 1529029 · Code A-000.0/10 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationVIOL C&I MESSAGE
Case 158811 · Violation 1543394 · Code A-000.0/10 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationFA/SUPP INSTALL PERMIT
Case 158811 · Violation 1543397 · Code FC-105.7/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationFIRE-INSTALLERS CERT
Case 158811 · Violation 1543396 · Code FC-901.9/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationANNUAL CERT FIRE SUPP
Case 158811 · Violation 1543395 · Code FC-914.1/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
What this record suggests
The City file documents 2 permits touching windows. 2 carries a completed, issued, or approved status; that documents the filing, not the present quality of the work.
Block context
416-20 Walnut St sits on the 400 block of Walnut St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 422-26 Walnut St · 428-36 Walnut St
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 10, 2026, 12:30 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)