2026 taxable assessment $423,000 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $393,900; it is not the 2026 billed-year value.
Property report
1939 Mifflin St
3 bd · 2 ba · 1 story · 1,584 sqft · RM1 · built 1920
House · Federal Home Loan Mortgage Corporation · assessed $423K (2026) · 2027 OPA assessment $394K. On the 1900 block of Mifflin St.
BlockReport AI · cited public records
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Property summary
Assessment$423,0002026 OPA assessment · 2027: $393,900
Last sale$118KRecorded 2025
Est. tax bill$5,921/year2026 taxable assessment × 1.3998%
Tax delinquencyNo 2022 matchNot proof account is current
Permits8Every fetched City permit
Violations0 open4 historical across 3 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 4810585002026 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.”
What stands out
From the public recordRenovated & sold on
Why it mattersBought for $70K in 2014, use permit in 2014, sold for $315K in 2017 (+350%).
View supporting records →Assessment and sale price disagree hard
Why it mattersAssessed at $394K, but it traded for $117,900 in 2025 — a 3.3× gap. Could be a non-market deed the record doesn't label, or an assessment that hasn't caught up.
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 $393,900; it is not yet the billed-year tax basis.
Assessment history · all dated City records marked on the line
- OPA assessment · 2016$108K 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$108K 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$108K 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$178K 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$191K 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$191K 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$191K 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$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 · 2024$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 · 2025$423K 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$423K 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$394K 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 · 2014Deed / sale $70KA 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 · 2017Deed / sale $315KA 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 · 2014-08-01UseThis 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 ↗
- Permit · 2014-10-21PlumbingThis 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 · 2014-11-06Major 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 · 2015-04-30ElectricalThis permit category usually covers electrical installation, alteration, replacement, or repair. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- Permit · 2015-05-12MechanicalThis 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 ↗
- Permit · 2017-08-25AlterationThis 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 ↗
- Permit · 2017-09-14ElectricalThis permit category usually covers electrical installation, alteration, replacement, or repair. 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 · 2010-09-08LICENSE-RES SFD/2FDA 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 · 2012-03-23LICENSE-RES GENERALA 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 · 2012-03-23EXT S-EXTERIOR REPAIR/MAINTAINA 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 · 2015-02-10WORKMANLIKE- BUILDING CODEA 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 · 2010-11-15HCEU INSP (Housing Code Enforcement Unit inspection)A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended.What Philadelphia inspections check ↗
- Inspection · 2012-05-14HCEU INSP (Housing Code Enforcement Unit inspection)A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended.What Philadelphia inspections check ↗
- Inspection · 2014-04-30PRECOURT (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 · 2003-03-17RentalA 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
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 record17 events · exact dates, newest first
- PermitElectrical
- PermitAlteration
- Deed / saleDeed / sale $315K
- PermitMechanical
- PermitElectrical
- L&I violationWORKMANLIKE- BUILDING CODE
- PermitMajor alteration
- PermitPlumbing
- PermitUse
- InspectionPRECOURT (likely: pre-court compliance inspection)
- Deed / saleDeed / sale $70K
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationLICENSE-RES GENERAL
- L&I violationEXT S-EXTERIOR REPAIR/MAINTAIN
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationLICENSE-RES SFD/2FD
- LicenseRental
Not a houseProperty report
This is a house, not a home. 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
House
Row 2 Sty Masonry
Owner
Federal Home Loan Mortgage Corporation
Public / institutional
OPA tax treatment
Assessed $423K
Taxable assessment on the roll
$ / sq ft
$249
assessed value ÷ interior sqft
Assessed value
$423,000
2026 OPA · 2027: $393,900
Interior area
1,584 sqft
Lot size
1,072 sqft
Stories
1
Built
1920
Zoning
RM1
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 20 dated records deeds, permits, inspections, licenses, violations, certifications & appeals
- PermitElectrical
Permit 815912 · COMPLETED
REPLACE 100AMP SERVICE WITH 200AMP SERVICE,WIRE BATH AND BEDROOM AND FISHING FOR THE REST OF THE HOUSE FOR 28-RCEPTS,12-SWITCHES,22-LIGHTS,6-DETECTORS AND 1-2 1/2 TON AC UNIT AS PER 2008 NEC (SOUTH DISTRICT)
- PermitAlteration
Permit 811531 · COMPLETED
FRAMING PARTITION WALLS.INSTALLATION OF BATHROOM AND BEDROOM PARTITION WALLS 500SF AS PART OF SINGLE FAMILY DWELLING
- Recorded transfer$315K transfer
2017
- PermitMechanical
Permit 609494 · EXPIRED
EZ PERMIT DUCTWORK & WARM-AIR APPLIANCES- FOR THE INSTALLATION OF NEW DUCTWORK, REGISTERS/GRILLES/DIFFUSERS, AND WARM-AIR APPLIANCES AS PER ATTACHED STANDARD. DEVIATIONS FROM THIS STANDARD WILL RESULT IN PERMIT REVOCATION AND REQUIRE SUBMISSION OF CONSTRUCTION PLANS.
- PermitElectrical
Permit 605919 · COMPLETED
REPLACE 100A SERVICE WITH 200A SERVICE. INSTALL 28- RECEPTACLES, 12- SWITCHES, 22- LIGHTS, 6- SMOKE DETECTORS, (1) 2- 1/2 TON A/C UNIT.... IN ACCORDANCE WITH 2008 NEC FOR A ONE FAMILY BUILDING
- ViolationWORKMANLIKE- BUILDING CODE
Case 569800 · Violation 3472672 · Code A-104.1/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- PermitMajor alteration
Permit 569800 · EXPIRED
MASONRY FRONT WALL - REMOVE EXISTING FRONT MASONRY WALL. REPLACE WITH NEW 8 INCH MASONRY WALL, WITH LIKE IN KIND (DOUBLE COURSE BRICK) ON EXISTING FOUNDATION. WINDOWS AND DOORS TO COMPLY WITH EMERGENCY EGRESS STANDARDS PER IRC.. NEW DOOR OPENING FOR 36 INCH DOOR. FLASH ROOF TO NEW FRONT. VERTICAL REINFORCEMENT EVERY 24 INCHES. INSTALL RETURNS INTO PARTY WALLS FOR STRUCTURAL CONNECTION. FLASH AND SEAL ROOF. INSTALL 2 X 4 FRAME WALL, R-19 INSULATION AND SHEETROCK ON INTERIOR FRONT WALL FOR FINISH.STREET DEPARTMENT PERMIT FOR SIDEWALK CLOSURE NEEDED.NO OTHER WORK ALLOWED UNDER THIS PERMIT.
- PermitMajor alteration
Permit 569724 · EXPIRED
INSTALLATION OF BATHROOM AND BEDROOM PARTITION WALLS 500SF
- PermitPlumbing
Permit 569124 · EXPIRED
ROUGH IN THE HOUSE DRAIN AND WATER LINES (SFD)
- PermitUse
Permit 541976 · COMPLETED
CONVERTING TO SINGLE FAMILY
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 250518 · PASSED
A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.
- Recorded transfer$70K transfer
2014
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 320675 · PASSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked passed.
- ViolationLICENSE-RES GENERAL
Case 320675 · Violation 2393027 · Code PM-102.0/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT S-EXTERIOR REPAIR/MAINTAIN
Case 320675 · Violation 2393028 · Code PM-304.1/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 320675 · FAILED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 250518 · CLOSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. City marked the record closed; open the case for the closing reason.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 250518 · FAILED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationLICENSE-RES SFD/2FD
Case 250518 · Violation 1886572 · Code PM-102.3/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- LicenseRental
License 249749 · Inactive
CIMINO SAMUEL & ANGELINA · Expires 2014-02-28
What this record suggests
The City file documents 8 permits touching bathroom work, electrical work, plumbing, roof work. 4 carries a completed, issued, or approved status; that documents the filing, not the present quality of the work.
Who's behind it
Federal Home Loan Mortgage Corporation · corporate / LLC owner
• Owns 12 properties across Philadelphia under this name, assessed at $2.9M combined
• Tax bills mail to 8200 Jones Branch Drive, Mc Lean VA, 22102 — outside Philadelphia
Where the record looks off
Places where the city's own paperwork disagrees with itself. These are flags on the data — not problems with the property.
Assessment and sale price disagree hard
Assessed at $394K, but it traded for $117,900 in 2025 — a 3.3× gap. Could be a non-market deed the record doesn't label, or an assessment that hasn't caught up.
Block context
1939 Mifflin St sits on the 1900 block of Mifflin St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 1937 Mifflin St · 1935 Mifflin 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
- 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 10, 2026, 4:53 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)