2026 assessment
$375K
OPA value, not a listing price
Property report
1427 Diamond St
3 stories3,609 sqftRM1built 1915
Property at a glanceApartment building
Phi Sigma National Housin
2027 published assessment
$375K
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 $375,000. It is not yet the billed-year tax basis.
- OPA assessment · 2016$340K 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$340K 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$357K 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$339K 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$340K 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$340K 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$340K 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$434K 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$434K 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$375K 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$375K 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$375K 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 · 2010-08-24SuppressionThis permit category usually covers fire-suppression systems or related life-safety work. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- Permit · 2016-12-28PlumbingThis permit category usually covers water, drainage, fixtures, or other plumbing work. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- Permit · 2025-09-10Change of UseThis permit category usually covers the property’s allowed use, dimensions, occupancy, or site configuration. 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 · 2026-01-23SUPPRESSION SYSTEM TESTING & 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 · 2010-09-14PERMB- WK DONE W/O NOTIFY INSPA 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 · 2026-01-30L&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 · 2026-03-06L&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 · 2026-04-10L&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 · 2024-05-07Phi Sigma Sigma National Housing Corporation: 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 · 2025-07-05Phi Sigma Sigma National Housing Corporation: 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 ↗
- License · 2020-07-29Phi Sigma Sigma National Housing Corporation: 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 ↗
- Certification · 2023-09-27Sprinkler 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 · 2024-04-12Sprinkler 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 · 2025-12-02Sprinkler 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 · 2025-12-03Sprinkler 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 · 2025-12-03Sprinkler 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 · 2025-12-03Sprinkler 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 ↗
- Appeal · 2025-09-24ZBA Permit Denial - Special ExceptionA challenge or request reviewed through a City appeals process. Filing an appeal does not show who prevailed; read the decision, conditions, and related permit or violation.How Philadelphia L&I appeals work ↗
Property assessmentAssessmentL&I violationAppealPermitInspectionLicenseCertification
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 record18 events · exact dates, newest first
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationSUPPRESSION SYSTEM TESTING & MAINTENANCE
- CertificationSprinkler Certification
- CertificationSprinkler Certification
- CertificationSprinkler Certification
- CertificationSprinkler Certification
- AppealZBA Permit Denial - Special Exception
- PermitChange of Use
- LicensePhi Sigma Sigma National Housing Corporation: Vacant Residential Property / Lot landlord or residential registration marked inactive
- LicensePhi Sigma Sigma National Housing Corporation: Vacant Residential Property / Lot landlord or residential registration initially issued
- CertificationSprinkler Certification
- CertificationSprinkler Certification
- LicensePhi Sigma Sigma National Housing Corporation: Rental landlord or residential registration initially issued
- PermitPlumbing
- L&I violationPERMB- WK DONE W/O NOTIFY INSP
- PermitSuppression
Verify the public record
Property tax
$5,249/year estimated property tax
2026 taxable assessment $375,000 × 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 $375,000. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 8811478002026 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
Commercial property
Apartment building, recorded in the City's house category. The public record and owner trail follow.
What it is
Apartment building
Apts 5-50 Units Masonry
Owner
Phi Sigma National Housin
$ / sq ft
$104
assessed value ÷ interior sqft
Interior area
3,609 sqft
Lot size
2,088 sqft
Stories
3
Built
1915
Zoning
RM1
Recorded owner
Who's behind it
Phi Sigma National Housin · corporate / LLC owner
• Tax bills mail to 217 E Washington St, Bloomington IL, 61701 — outside Philadelphia
• Holds an active rental license for this address
Block context
1400 block of Diamond St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 1425 Diamond St · 1429 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.
Phi Sigma Sigma National Housing CorporationInactive
Vacant Residential Property / Lot · Initial issue date May 7, 2024 · Terminal license date Jul 5, 2025
Phi Sigma Sigma National Housing CorporationActive
Rental · Initial issue date Jul 29, 2020 · Filed expiration Jul 28, 2026
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 18 dated rows
- InvestigationL&I investigation
Case CF-2026-008448 · PASSED
The cited inspection visit was marked passed.
- InvestigationL&I investigation
Case CF-2026-008448 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2026-008448 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationSUPPRESSION SYSTEM TESTING & MAINTENANCE
Case CF-2026-008448 · Violation VI-2026-005553 · Code F-903.5 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- CertificationSprinkler Certification
Certification BC-2026-002023 · Deficient
- CertificationSprinkler Certification
Certification BC-2026-008255 · Certified
Expires 2026-12-03
- CertificationSprinkler Certification
Certification BC-2026-005342 · Deficient
- CertificationSprinkler Certification
Certification BC-2026-007906 · Certified
Expires 2026-12-02
- AppealZBA Permit Denial - Special Exception
Appeal ZP-2024-005807 · Completed · Granted
Related permit ZP-2024-005807 · Permit for the proposed use, Group Living - Single Room Residence (19 rooming units) within an existing structure.
- PermitChange of Use
Permit ZP-2024-005807 · Issued
Group Living - Single-Room Residence
- License terminal eventPhi Sigma Sigma National Housing Corporation: Vacant Residential Property / Lot landlord or residential registration marked inactive
License 950854 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License issue eventPhi Sigma Sigma National Housing Corporation: Vacant Residential Property / Lot landlord or residential registration initially issued
License 950854 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- CertificationSprinkler Certification
Certification BC-2024-011565 · Certified
Expires 2025-04-12
- CertificationSprinkler Certification
Certification BC-2023-020369 · Certified
Expires 2024-09-27
- License issue eventPhi Sigma Sigma National Housing Corporation: Rental landlord or residential registration initially issued
License 847339 · Active
License event. Registration does not prove present operation or storefront occupancy.
- PermitPlumbing
Permit 746351 · COMPLETED
INSTALL A NEW 1" RPZ BACKFLOW PREVENTION ASSEMBLY
- ViolationPERMB- WK DONE W/O NOTIFY INSP
Case 292383 · Violation 1829684 · Code A-302.11/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- PermitSuppression
Permit 292383 · COMPLETED
INSTALL 44 NEW SPRINKLERS WITH BFP IN THE ENTIRE BUILDING OF XI CHAPTER HOUSING FOR THE OWNER
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)