{"asOf":"2026-07-10T23:00:44.962Z","block":"500-599 N 12TH ST","blockUrl":"https://blockreport.homes/block/500-599-n-12th-st","address":"520 N 12TH ST","parcelNumber":"871085100","source":"https://property.phila.gov/?p=871085100","ownerType":"investor","kind":"mixed-use","isHouse":false,"residential":true,"taxExempt":false,"institutional":false,"buildingClass":"STR/OFF+APT 3 STY MASONRY","useLabel":"Apartment building","owner":"DAI ZHENG & HUANG LLP","coOwner":null,"marketValue":428600,"livableArea":2268,"yearBuilt":1900,"lastSale":{"price":1,"date":"2009-10-31T04:00:00Z"},"openViolations":0,"violations":[{"number":"VI-2023-061220","date":"2023-08-17","code":"PM15-108.1","title":"UNSAFE STRUCTURE","status":"COMPLIED","resolutionDate":"2024-01-26","resolution":"COMPLIED - PERMIT OBTAINED"},{"number":"VI-2023-061221","date":"2023-08-17","code":"PM15-304.1(G)","title":"EXTERIOR WALLS","status":"COMPLIED","resolutionDate":"2024-01-26","resolution":"COMPLIED - PERMIT OBTAINED"}],"violationCases":[{"number":"CF-2023-082987","type":"NOTICE OF VIOLATION","priority":"UNSAFE","responsibility":"CSU INVESTIGATOR","status":"CLOSED","createdDate":"2023-08-17","completedDate":"2024-02-06","violations":[{"number":"VI-2023-061220","date":"2023-08-17","code":"PM15-108.1","title":"UNSAFE STRUCTURE","status":"COMPLIED","resolutionDate":"2024-01-26","resolution":"COMPLIED - PERMIT OBTAINED"},{"number":"VI-2023-061221","date":"2023-08-17","code":"PM15-304.1(G)","title":"EXTERIOR WALLS","status":"COMPLIED","resolutionDate":"2024-01-26","resolution":"COMPLIED - PERMIT OBTAINED"}]}],"violYears":[{"y":2023,"n":2,"worst":"UNSAFE STRUCTURE"}],"investigations":[{"caseNumber":"CF-2023-082987","date":"2023-08-17","type":null,"status":"FAILED"},{"caseNumber":"CF-2023-082987","date":"2023-09-22","type":null,"status":"FAILED"},{"caseNumber":"CF-2023-082987","date":"2023-10-27","type":null,"status":"FAILED"},{"caseNumber":"CF-2023-082987","date":"2024-01-29","type":null,"status":"PASSED"}],"inspYears":[{"y":2023,"fails":3,"passes":0},{"y":2024,"fails":0,"passes":1}],"taxOwed":0,"taxSnapshot":{"available":true,"asOf":"2022-06","matched":false},"taxDelinquencySnapshotAsOf":"2022-06","taxDelinquencySnapshotAvailable":true,"lat":39.96229480125582,"lng":-75.15774022217303,"geom":{"type":"Polygon","coordinates":[[[-75.157720675,39.962217231],[-75.157801024,39.962318049],[-75.15775192,39.962341222],[-75.157695119,39.962333851],[-75.157720675,39.962217231]]]},"liDistrict":"CENTRAL EAST","certifications":[],"cityRecordAvailability":{"violations":true,"investigations":true,"appeals":true,"certifications":true,"permits":true,"licenses":true},"zip":"19123","beds":null,"baths":null,"stories":null,"lotArea":695,"zoning":"CMX3","grade":"C","basement":null,"heater":null,"centralAir":null,"extCond":"4","intCond":"4","garage":null,"homestead":false,"mail":"1318 S 10TH ST, PHILADELPHIA PA, 19147","mailOut":false,"appeals":[{"type":"Zoning board appeal","grounds":"PERMIT FOR THE RELOCATION OF LOT LINES TO CREATE THREE(3) LOTS FROM ONE(1) LOT.  LOT B: FOR AN EXISTING 4 STORY STRUCTURE FOR USE AS PERMITTED IN C2 COMMERCIAL DISTRICT ON THE FIRST FLOOR (USE REGISTRATION REQUIRED PRIOR TO OCCUPANCY) AND A","status":"CLOSED","outcome":"Granted with conditions","date":"2009-09-08","number":"9331","relatedPermit":"214070"},{"type":"Zoning board appeal","grounds":"PERMIT FOR THE RELOCATION OF LOT LINES TO CREATE THREE(3) LOTS FROM TWO(2) EXISTING LOTS (520 N 12TH STREET, 524 N 12TH STREET).(SIZE AND LOCATION AS SHOWN ON THE APPLICATION)","status":"OPEN","outcome":"Withdrawn","date":"2019-12-18","number":"38514","relatedPermit":"997601"}],"taxYears":[],"taxNet":0,"taxLien":false,"taxLedgerThrough":2016,"taxLedgerAvailable":true,"timesSold":0,"abated":false,"assessmentExemption":false,"exemptionBasisVerified":false,"valueSeries":[{"y":2016,"v":227000,"taxable":132278},{"y":2017,"v":227000,"taxable":227000},{"y":2018,"v":367900,"taxable":367900},{"y":2019,"v":378900,"taxable":378900},{"y":2020,"v":382600,"taxable":382600},{"y":2021,"v":382600,"taxable":382600},{"y":2022,"v":382600,"taxable":382600},{"y":2023,"v":486500,"taxable":486500},{"y":2024,"v":486500,"taxable":486500},{"y":2025,"v":429700,"taxable":429700},{"y":2026,"v":429700,"taxable":429700},{"y":2027,"v":428600,"taxable":428600}],"taxNow":6015,"familyHeld":false,"lastTransferNominal":true,"permits":[{"number":"136516","date":"2008-03-06","work":"Plumbing","type":"PP_PLUMBNG","description":"PLUMBING PERMIT","status":"COMPLETED","completedDate":"2008-09-12","scope":"REPLACE SEWER LINE FROM 5\" CURB TRAP TO BASEMENT WALL."},{"number":"138250","date":"2008-03-13","work":"Plumbing","type":"PP_PLUMBNG","description":"PLUMBING PERMIT","status":"COMPLETED","completedDate":"2008-10-01","scope":"REPLACE A SECTION OF 4\" X 8\" SEWER LINE AND INSTALL 1 FL DR"},{"number":"214070","date":"2009-10-15","work":"Zoning","type":"ZP_ZONING","description":"ZONING PERMIT","status":"COMPLETED","completedDate":"2009-10-15","scope":"SUB-DIVISION OF 1 PARCEL INTO 3 SEPERATE PARCELS. PLOT B IS LOT AT 520-522 N. 12TH ST THIS IS AN EXISTING 4 STORY BLDG. TO BE USED AS COMMERCIAL ON GROUND FL. AND SFD'S ON 2ND FL. AND COMBINED SFD ON 3RD AND 4TH FL. PLOT C IS THREE STORY BLDG. WITH USE AS A COMMERCIAL SPACE ON GROUND FL. WITH 1 SFD ON 2ND FL. AND 1 SFD ON 3RD FL. PARKING FOR 3 CARS WITH CURB CUT ONTO RIDGE AVE. PLOT D TO BE A SFD"},{"number":"436329","date":"2012-11-06","work":"Plumbing","type":"PP_PLUMBNG","description":"PLUMBING PERMIT","status":"COMPLETED","completedDate":"2012-11-16","scope":"LATERAL,HOUSE TRAP"},{"number":"CP-2021-002923","date":"2021-06-04","work":"Addition and/or Alteration","type":"Building","description":"Commercial Building Permit","status":"Completed","completedDate":"2021-08-18","scope":"For prescriptive alterations to shore the first floor and install three (3) new reinforced concrete columns within the basement of an existing three (3) story attached structure, as per plans; no other work on this permit."},{"number":"CP-2023-006823","date":"2023-12-29","work":"Addition and/or Alteration","type":"Building","description":"Commercial Building Permit","status":"Completed","completedDate":"2024-01-31","scope":"MAKE SAFE PERMIT- For (MAKE SAFE - TO RESOLVE CASE CF-2023-082987. REPAIR EXTERIOR WALL DUE TO VEHICLE IMPACT.) to resolve case #CF-2023-082987. Abutting sidewalk must be closed with fencing a minimum of 6’ in height. Separate Streets Department permit required for sidewalk closure. A separate permit is required for any additional alterations that are not specifically addressed on case #CF-2023-082987. “In accordance with Code Bulletin PM-1801, a PA professional engineer is required to monitor repairs made under this permit. The engineer must submit a sealed statement to the Department confirming that the structure is in sound condition at completion.”"}],"storyTag":"Improved","storyDelta":null,"timeline":[{"y":2008,"k":"permit","w":"Plumbing"},{"y":2008,"k":"permit","w":"Plumbing"},{"y":2009,"k":"appeal","w":"Appeal granted with conditions"},{"y":2009,"k":"permit","w":"Zoning"},{"y":2012,"k":"permit","w":"Plumbing"},{"y":2019,"k":"appeal","w":"Appeal withdrawn"},{"y":2021,"k":"permit","w":"Addition and/or Alteration"},{"y":2023,"k":"viol","w":"2 L&I violations incl UNSAFE STRUCTURE"},{"y":2023,"k":"insp","w":"Inspection failed ×3"},{"y":2023,"k":"permit","w":"Addition and/or Alteration"},{"y":2024,"k":"insp","w":"Inspection passed"}],"rented":false,"licenses":[{"number":"330606","type":"Vacant Residential Property / Lot","status":"Inactive","businessName":"DAI  HUANG LLP ZHENG","revenueCode":"3219","rentalCategory":null,"units":null,"issuedDate":"2005-08-02","latestIssueDate":"2005-08-02","expirationDate":"2006-02-28","inactiveDate":"2012-12-22"}],"signals":[],"legalChecks":[{"id":"use-occupancy","level":"attention","title":"Zoning approval is not the occupancy file","finding":"Appeal #9331: CLOSED · Granted with conditions; related permit 214070.","why":"Philadelphia says a zoning approval or Property Sales Certification can identify a use without proving that it was established under the Building Code. A change of use, unit count, exits, or fire rating can require a Building Permit and Certificate of Occupancy.","action":"Verify the lawful use, unit count, associated construction permits, and Certificate of Occupancy with L&I.","url":"https://www.phila.gov/services/permits-violations-licenses/get-a-certificate/get-a-certificate-of-occupancy/"},{"id":"violations","level":"attention","title":"An unsafe-building history still deserves the repair file","finding":"The fetched record shows 0 open and 2 historical violations across 1 case.","why":"The aggregate currently shows zero open violations, so a historical unsafe/imminently-dangerous row is not a current hazard finding. The repair or demolition permit, final inspection, and case closure are the evidence that resolves the former designation.","action":"Review the Make Safe/repair permit, final inspection, and case closure.","url":"https://www.phila.gov/departments/department-of-licenses-and-inspections/inspections/violation-and-order-types/"},{"id":"mixed-use","level":"verify","title":"Residential and business space run on separate compliance tracks","finding":"OPA classifies this parcel as mixed-use.","why":"The zoning/use and occupancy file must cover the actual residential and commercial spaces. Dwelling units can require Rental Licenses and lead compliance; the operator can separately need an Activity License and sector license; installed fire systems can require annual certification.","action":"Match every dwelling and business use to the zoning permit, CO, current operator licenses, and life-safety filings.","url":"https://www.phila.gov/services/permits-violations-licenses/get-a-certificate/get-a-certificate-of-occupancy/"},{"id":"rental-status","level":"verify","title":"Residential form does not establish rental use","finding":"OPA classifies the parcel as mixed-use; no active Rental License row matched.","why":"A multi-unit or mixed-use classification does not prove that space is currently rented. If dwelling space is rented, Philadelphia generally requires a current Rental License and related occupancy, tax, violation, and lead compliance.","action":"Confirm actual occupancy first; if any unit is rented, verify the license and legal unit count with L&I.","url":"https://www.phila.gov/services/permits-violations-licenses/rent-or-sell-property/get-a-rental-license/"},{"id":"investigations","level":"verify","title":"Failed inspections are dated events—not the current condition","finding":"3 failed, 1 passed, and 0 CLOSED investigation outcomes are in the fetched history; the latest dated visit was PASSED on Jan 29, 2024.","why":"A PASSED or FAILED value applies to that inspection visit. CLOSED is a separate source status; none of the three alone proves the parent permit or violation case closed—or describes today’s condition.","action":"Open the parent case/permit for each material failure and confirm its later disposition.","url":"https://www.phila.gov/departments/department-of-licenses-and-inspections/inspections-by-permit-type/"},{"id":"business-license","level":"verify","title":"A historical business license is not current operating authority","finding":"Vacant Residential Property / Lot #330606: Inactive since Dec 22, 2012","why":"A license record proves the licensed activity existed at that time. An inactive or expired license does not establish that the business still operates—or that it may legally reopen under the same use.","action":"If business income matters, verify the current tenant, use registration, and active license in eCLIPSE.","url":"https://www.phila.gov/departments/department-of-licenses-and-inspections/licenses/business-licenses/"},{"id":"deed-chain","level":"verify","title":"The latest nominal transfer is not a market sale—or a title opinion","finding":"The latest deed in the assembled record moved for nominal consideration.","why":"A $1 or nominal deed can be a valid family, estate, or entity transfer. It does not establish a sale price, clear title, or by itself prove a tangled title.","action":"Read the recorded deed and have the title search confirm every grantor, grantee, estate/probate step, lien, and authority to sell.","url":"https://www.phila.gov/services/property-lots-housing/get-a-copy-of-a-deed-or-other-recorded-document/"},{"id":"commercial-trash","level":"verify","title":"A separate Commercial Trash account may apply","finding":"OPA classifies the parcel as mixed-use. BlockReport does not receive a current Commercial Trash account balance.","why":"Philadelphia charges qualifying small commercial, mixed-use, and multi-unit properties that use City collection; exemptions and private collection can change applicability. A use category alone does not prove a fee is due.","action":"Check the Commercial Trash account inside the date-effective Property Payoff.","url":"https://www.phila.gov/2026-06-09-pay-your-trash-fee-bill-by-june-30/"}],"closingChecks":[{"title":"Property Sales Certification","body":"The seller must obtain Philadelphia’s certificate showing the base zoning, last use in the zoning record, and open violations. The City warns that it does not prove Building Code occupancy or show zoning overlays.","action":"Obtain the fresh certificate and compare it with the CO, permits, and Atlas overlays.","url":"https://www.phila.gov/services/permits-violations-licenses/get-a-certificate/get-a-property-sales-certification/"},{"title":"Date-effective City Property Payoff","body":"The Tax Center Property Payoff covers Real Estate Tax, Commercial Trash, and L&I abatement-work invoices. Philadelphia says it does not include business-tax debts or liens, water and sewer charges, or fines for code violations.","action":"Request the City statement effective through settlement; read every period and invoice.","url":"https://www.phila.gov/guides/philadelphia-tax-center/what-to-do/"},{"title":"Professional title and water-lien searches","body":"OPA ownership, deed summaries, and a zero tax balance are not clear title. Mortgages, judgments, municipal claims, water liens, easements, heirs, and other encumbrances require separate searches.","action":"Use a Pennsylvania lawyer/title company and obtain owner’s title insurance; order the separate water search/payoff.","url":"https://www.phila.gov/2026-04-07-why-title-insurance-is-your-best-friend-when-buying-a-home-in-philadelphia/","secondaryUrl":"https://www.phila.gov/services/water-gas-utilities/pay-or-dispute-a-water-bill/resolve-water-liens-judgments/"},{"title":"Seller-specific tax relief is not the buyer’s bill","body":"LOOP and low-income or senior Real Estate Tax freezes depend on the qualifying owner and continued program eligibility; a buyer cannot assume the seller’s capped or frozen bill continues. A separately verified property abatement often remains with the property for its remaining term, but program-specific new-owner filing, use, and tax-compliance conditions still must be confirmed—not inferred from the reduced assessment alone.","action":"Have Revenue or OPA identify every current benefit, model the buyer’s bill without seller-specific relief, and confirm any verified abatement in writing.","url":"https://www.phila.gov/services/payments-assistance-taxes/payment-plans-and-assistance-programs/income-based-programs-for-residents/apply-for-the-longtime-owner-occupants-program-loop/","secondaryUrl":"https://www.phila.gov/services/payments-assistance-taxes/taxes/property-and-real-estate-taxes/get-real-estate-tax-relief/tax-freeze/"},{"title":"Seller disclosure and independent inspections","body":"For a covered Pennsylvania residential transfer, obtain the statutory seller disclosure. It reports the seller’s knowledge; it is not a warranty, title search, code review, or substitute for inspections. Because OPA dates this building before 1978, separately obtain the required federal/City lead disclosures and any test results.","action":"Have the agreement and disclosure reviewed for this transaction’s coverage and exceptions.","url":"https://www.pa.gov/agencies/dos/department-and-offices/bpoa/boards-commissions/real-estate-commission"}]}