Apartment building report
4100-02 Ludlow St
4 stories · 6,500 sqft · CMX4 · built 2018
4100 Ludlow Street LLC

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 $1,473,200; it is not yet the billed-year tax basis.
Assessment history · all dated City records marked on the line
- OPA assessment · 2016$27K 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$890K 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$917K 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$923K 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$923K 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$923K 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$1.4M 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$1.4M 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$1.6M 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$1.6M 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$1.5M 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 ↗
- Teardown · 2016DemolishedThis permit category usually covers partial or complete removal 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 · 2015-03-26DemolitionThis permit category usually covers partial or complete removal 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 · 2015-03-26Zoning/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 ↗
- Permit · 2015-05-06ZoningThis 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 · 2015-05-06ZoningThis 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 · 2015-07-17Zoning/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 ↗
- Permit · 2015-09-23New constructionThis 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 · 2015-11-03AdministrativeThis 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 · 2016-02-01New constructionThis 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 · 2016-04-13SuppressionThis 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 · 2016-05-18AdministrativeThis 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 · 2016-08-02PlumbingThis 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 · 2016-08-05PlumbingThis 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 · 2016-10-03ElectricalThis 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 · 2016-10-13MechanicalThis 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 · 2023-10-02AlterationsThis 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 · 2026-05-20Change 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 · 2016-03-07PERMB- UNDERPIN FOUNDATIONA 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 · 2016-03-07PERMB- REV WK GONE BEYOND ORIGA 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 · 2016-03-07BP_BLDGA 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 · 2016-07-16WORKMANLIKE- 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 · 2016-07-16BP_BLDGA 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 · 2016-04-15BP_BLDGA 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 · 2016-08-29BP_BLDGA 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 · 2023-07-254100 Ludlow Street LLC: 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 · 2018-02-16LUDLOW BROTHERS LLC: 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 · 2022-04-16LUDLOW BROTHERS LLC: 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 ↗
- Certification · 2021-05-18Fire 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 · 2021-12-13Sprinkler 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 · 2022-11-23Sprinkler 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 · 2023-11-15Sprinkler 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 · 2025-05-19Fire 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 · 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 · 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 ↗
- Appeal · 2015-04-22Zoning board appealA 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 ↗
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.
- CertificationSprinkler Certification
- PermitChange of Use
- CertificationSprinkler Certification
- CertificationFire Alarm Certification
- CertificationSprinkler Certification
- PermitAlterations
- License4100 Ludlow Street LLC: Rental landlord or residential registration initially issued
- CertificationSprinkler Certification
- LicenseLUDLOW BROTHERS LLC: Rental landlord or residential registration marked inactive
- CertificationSprinkler Certification
- CertificationFire Alarm Certification
- LicenseLUDLOW BROTHERS LLC: Rental landlord or residential registration initially issued
- PermitMechanical
- PermitElectrical
- InspectionBP_BLDG
- PermitPlumbing
- PermitPlumbing
- L&I violationWORKMANLIKE- BUILDING CODE
- InspectionBP_BLDG
- PermitAdministrative
- InspectionBP_BLDG
- PermitSuppression
- L&I violationPERMB- UNDERPIN FOUNDATION
- L&I violationPERMB- REV WK GONE BEYOND ORIG
- InspectionBP_BLDG
- PermitNew construction
- TeardownDemolished
- PermitAdministrative
- PermitNew construction
- PermitZoning/use
- PermitZoning
- PermitZoning
- AppealZoning board appeal
- PermitDemolition
- PermitZoning/use
Preparing this comparison.
Compare nearby property records
The subject property stays pinned above and is excluded from this comparable list. Repeated condominium addresses include their OPA parcel number.
Property details and source records
The visual history and live comparison stay above. Use these focused views for tax, ownership, nearby-block, and supporting City records.
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.
2026 taxable assessment $157,910 × 1.3998%. This is an estimate, not a bill or account balance.
OPA also publishes a 2027 assessment of $1,473,200; it is not the 2026 billed-year value.
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 8814427452026 OPA taxes $157,910 of $1,579,100 assessed. The assessment fields alone do not identify a program, approval date, expiration, or buyer eligibility.
See the assessment math →Applying the same rate to the billed-year full assessment. OPA's numeric split does not say when or whether the current treatment changes.
See the assessment math →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.
Recorded owner
Who's behind it
4100 Ludlow Street LLC · corporate / LLC owner
• Tax bills mail to 70 E 10th Street 4r, New York NY, 10003 — outside Philadelphia
• Holds an active rental license for this address
Block context
4100 block of Ludlow St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 4104-08 Ludlow St · 4110 Ludlow St
L&I license dates · data through Jul 23, 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 23, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
Rental · Initial issue date Jul 25, 2023 · Filed expiration Jul 24, 2027
Rental · Initial issue date Feb 16, 2018 · Terminal license date Apr 16, 2022
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.
Browse 34 dated records
Deeds, permits, inspections, licenses, violations, certifications, and appeals.
Open the source ledger 34 dated rows
- CertificationSprinkler Certification
Certification BC-2026-019576 · Certified
Expires 2027-06-24
- PermitChange of Use
Permit ZP-2026-005134 · Issued
Visitor Accommodations
- CertificationSprinkler Certification
Certification BC-2026-009714 · Certified
Expires 2026-12-02
- CertificationFire Alarm Certification
Certification BC-2025-021346 · Certified
Expires 2026-05-19
- CertificationSprinkler Certification
Certification BC-2024-004016 · Certified
Expires 2024-11-15
- PermitAlterations
Permit PP-2023-013371 · Completed
REPLACE 1-1/" BACKFLOW DEVICE.
- License issue event4100 Ludlow Street LLC: Rental landlord or residential registration initially issued
License 929416 · Active
License event. Registration does not prove present operation or storefront occupancy.
- CertificationSprinkler Certification
Certification BC-2021-000751 · Certified
Expires 2023-11-23
- License terminal eventLUDLOW BROTHERS LLC: Rental landlord or residential registration marked inactive
License 766211 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- CertificationSprinkler Certification
Certification BC-2022-000300 · Certified
Expires 2022-12-13
- CertificationFire Alarm Certification
Certification BC-2021-001605 · Certified
Expires 2022-05-18
- License issue eventLUDLOW BROTHERS LLC: Rental landlord or residential registration initially issued
License 766211 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- PermitMechanical
Permit 728530 · COMPLETED
INSTALL 6 HVAC UNITS WITH DUCTWORK. ALL SELF CONTAINED (MULTI-FAMILY)
- PermitElectrical
Permit 718176 · COMPLETED
400AMP MAIN SERVICE. 7 GANG METER 125 AMP PER POSITION. WIRING THROUGHOUT AS PER NEC 2008 FIRE ALARM WIRE AND INSTALL AS PER NFPA 72
- InvestigationBP_BLDG
Case 544519 · PASSED
The cited inspection visit was marked passed.
- PermitPlumbing
Permit 712840 · COMPLETED
NEW 1 1/2" WATER SERVICE, 5" LATERAL, CURB TRAP, FAI AND AREA DRAIN-PA1#20162180280-"SELF-CERTIFICATION'S ARE NO LONGER PERMITTED" - "ALL EXCAVATIONS AND PLUMBING TRENCHES IN EXCESS OF 5 FEET IN DEPTH MUST HAVE APPROVED SHORING IN PLACE AT THE TIME OF INSPECTION"
- PermitPlumbing
Permit 691204 · COMPLETED
NEW CONSTRUCTION: INTERIOR PLUMBING; FOUR (4) STORY STRUCTURE WITH PILOT HOUSE AND ROOF DECK; SIX FAMILY DWELLING - THE INSTALLATION WILL COMPY WITH THE PHILADELPHIA PLUMBING CODE 2004
- ViolationWORKMANLIKE- BUILDING CODE
Case 544519 · Violation 4010794 · Code A-104.1/1 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- InvestigationBP_BLDG
Case 544519 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitAdministrative
Permit 692912 · COMPLETED
AMEND BUILDING PERMIT AP#641031 TO REFLECT CORRECT ESTIMATED COST OF WORK OF $750,000.00
- InvestigationBP_BLDG
Case 522698 · PASSED
The cited inspection visit was marked passed.
- PermitSuppression
Permit 637126 · COMPLETED
FOR THE INSTALLATION OF A (2) INCH FIRE SERVICE LINE W. BACKFLOW PREVENTOR (BFP) ASSEMBLY AND FOR INSTALLATION OF A FIRE SUPPRESSION SYSTEM AS PER NFPA 13R, STANDPIPE SYSTEM AS PER NFPA 14. ALL WORK SHALL BE IN ACCORDANCE WITH APPROVED PLANS AND HYDRAULIC CALCULATIONS.
- ViolationPERMB- UNDERPIN FOUNDATION
Case 522698 · Violation 3860739 · Code A-301.1/37 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationPERMB- REV WK GONE BEYOND ORIG
Case 522698 · Violation 3860740 · Code A-302.10/3 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationBP_BLDG
Case 522698 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitNew construction
Permit 641031 · COMPLETED
FOR THE ERECTION OF A FOUR (4) STORY STRUCTURE WITH PILOT HOUSE AND ROOF DECK (ROOF DECK FOR MAINTENANCE PURPOSES ONLY); FOR USE AS A SIX FAMILY DWELLING. ENTIRE BUILDING TO BE FULLY SPRINKLERED PER NFPA 13 SYSTEM AND EQUIPPED WITH A STANDPIPE SYSTEM. SEE AP# 629949 FOR FOUNDATION PERMIT. ALL WORK SHALL BE DONE IN ACCORDANCE WITH APPROVED PLANS.
- PermitAdministrative
Permit 648559 · COMPLETED
AMEND DEMOLITION PERMIT #588040 TO CHANGE CONTRACTOR TO GAMA WRECKING TO INCLUDE UPDATED SITE SAFETY PLAN AND WORK SCHEDULE.
- PermitNew construction
Permit 629949 · COMPLETED
FOR THE CONSTRUCTION OF A FOUNDATION SYSTEM ONLY, PER APPROVED PLANS AND SUBMITTED GEOTECHNICAL REPORT.
- PermitZoning/use
Permit 624046 · COMPLETED
FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH PILOT HOUSE ACCESS TO ROOF DECK ONLY FOR A MULTI-FAMILY HOUSEHOLD LIVING (SIX (6) DWELLING UNITS).SIZE AND LOCATION AS SHOWN IN THE APPLICATION.
- PermitZoning
Permit 607975 · COMPLETED
RELOCATION OF LOT LINES TO CREATE (1) LOT FROM (2)LOTS.
- PermitZoning
Permit 607978 · COMPLETED
RELOCATION OF LOT LINES TO CREATE (1) LOT FROM (2)LOTS.
- AppealZoning board appeal
Appeal 24788 · CLOSED · Withdrawn
Related permit 592142 · PERMIT FOR THE LOT ADJUSTMENT TO CREATE ONE(1) LOT ( PREMISES 'C') FROM TWO(2) OPA ACCOUNTS ( PREMISES 'A' AND PREMISES 'B')( 4100 LUDGOW ST AND 4102 LUDGOW ST) AS FOLLOWS: PREMISES "C": FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH PILOT
- PermitDemolition
Permit 588040 · COMPLETED
FOR THE COMPLETE DEMOLITION OF AN EXISTING SEMI-DETACHED [VACANT LOT ON ONE SIDE] THREE (3) STORY SINGLE FAMILY MASONRY AND WOOD BUILDING. ALL PERMITTED DEMOLITION ACTIVITY TO BE IN ACCORDANCE WITH APPROVED SITE SAFETY DEMOLITION PLAN & SUCH PLAN TO BE MAINTAINED ON SITE AT ALL TIMES IN ACCORDANCE WITH CODE BULLETIN B-1302. PROTECTION OF ADJACENT LOW ROOF AT 4104 LUDLOW ST TO BE PROVIDED PER SAFETY PLAN/DEMOLITION SCHEDULE. FULL SIDEWALK CLOSURE REQUIRED AS REFLECTED ON APPROVED SITE PLAN AND IN ACCORDANCE WITH SECTION 3306 OF THE IBC. SEPARATE STREET CLOSURE PERMIT REQUIRED PRIOR TO START OF WORK. ANY DEVIATION WILL REQUIRE AN AMENDED BUILDING PERMIT.
- PermitZoning/use
Permit 588037 · COMPLETED
FOR THE COMPLETE DEMOLITION OF AN EXISTING ATTACHED STRUCTURE. SIZE AND LOCATION AS SHOWN IN APPLICATION. FOR USE AS A VACANT LOT.
What this record suggests
The City file documents 16 permits touching electrical work, plumbing, roof work. 16 carries a completed, issued, or approved status; that documents the filing, not the present quality of the work.
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 23, 2026, 12:29 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)