{"asOf":"2026-07-26T06:38:26.426Z","block":"800-899 N 20TH ST","blockUrl":"https://philadelphia.blockreport.homes/block/800-899-n-20th-st","address":"866 N 20TH ST","parcelNumber":"151090200","source":"https://property.phila.gov/?p=151090200","ownerType":"owner-occupied","kind":"house","isHouse":true,"home":true,"commercial":false,"residential":true,"taxExempt":false,"institutional":false,"buildingCode":"O50","buildingCodeNew":"22","buildingClass":"ROW 3 STY MASONRY","buildingClassNew":"ROW TYPICAL","useLabel":"House","owner":"MARX NATHAN A","coOwner":null,"marketValue":760000,"landAssessment":152000,"improvementAssessment":608000,"livableArea":2451,"yearBuilt":1920,"lastSale":{"price":680000,"date":"2025-08-07T04:00:00Z"},"openViolations":0,"violations":[{"number":"1621711","date":"2010-01-12","code":"A-301.1/7","title":"PERMB- INT DEMOL WALLS ETC","status":"COMPLIED","resolutionDate":null,"resolution":null},{"number":"1727536","date":"2010-06-02","code":"PM-102.4/2","title":"LICENSE-VAC RES BLDG","status":"COMPLIED","resolutionDate":null,"resolution":null},{"number":"3509371","date":"2014-05-08","code":"A-901.13/1","title":"PENALTY- NO BLDG PERM INFO","status":"COMPLIED","resolutionDate":null,"resolution":null},{"number":"3509370","date":"2014-05-08","code":"A-301.1/65","title":"PERM Z- NEW USE","status":"COMPLIED","resolutionDate":null,"resolution":null},{"number":"3509369","date":"2014-05-08","code":"A-301.1/10","title":"PERMB- OUTDOOR DECK","status":"COMPLIED","resolutionDate":null,"resolution":null}],"violationCases":[{"number":"224252","type":"CONSTRUCTION SERVICES","priority":"CONSTRUCTION SERVICES","responsibility":"DCC","status":"CLOSED","createdDate":"2010-01-12","completedDate":"2010-03-30","violations":[{"number":"1621711","date":"2010-01-12","code":"A-301.1/7","title":"PERMB- INT DEMOL WALLS ETC","status":"COMPLIED","resolutionDate":null,"resolution":null}]},{"number":"237668","type":"STANDARD","priority":"STANDARD","responsibility":"HCEU","status":"CLOSED","createdDate":"2010-06-03","completedDate":"2010-07-08","violations":[{"number":"1727536","date":"2010-06-02","code":"PM-102.4/2","title":"LICENSE-VAC RES BLDG","status":"COMPLIED","resolutionDate":null,"resolution":null}]},{"number":"433530","type":"CONSTRUCTION SERVICES","priority":"CONSTRUCTION SERVICES","responsibility":"DCC","status":"CLOSED","createdDate":"2014-05-27","completedDate":"2015-06-01","violations":[{"number":"3509371","date":"2014-05-08","code":"A-901.13/1","title":"PENALTY- NO BLDG PERM INFO","status":"COMPLIED","resolutionDate":null,"resolution":null},{"number":"3509370","date":"2014-05-08","code":"A-301.1/65","title":"PERM Z- NEW USE","status":"COMPLIED","resolutionDate":null,"resolution":null},{"number":"3509369","date":"2014-05-08","code":"A-301.1/10","title":"PERMB- OUTDOOR DECK","status":"COMPLIED","resolutionDate":null,"resolution":null}]}],"violYears":[{"y":2010,"n":2,"worst":null},{"y":2014,"n":3,"worst":null}],"investigations":[{"caseNumber":"224252","date":"2010-01-12","type":"BP_BLDG","status":"FAILED"},{"caseNumber":"224252","date":"2010-01-22","type":"BP_BLDG","status":"PASSED"},{"caseNumber":"224252","date":"2010-02-22","type":"BP_BLDG","status":"PASSED"},{"caseNumber":"224252","date":"2010-03-19","type":"BP_BLDG","status":"PASSED"},{"caseNumber":"224252","date":"2010-03-30","type":"BP_BLDG","status":"PASSED"},{"caseNumber":"237668","date":"2010-06-02","type":"HCEU INSP","status":"FAILED"},{"caseNumber":"237668","date":"2010-06-22","type":"HCEU INSP","status":"FAILED"},{"caseNumber":"237668","date":"2010-07-07","type":"HCEU INSP","status":"PASSED"},{"caseNumber":"433530","date":"2014-05-27","type":"BP_BLDG","status":"FAILED"},{"caseNumber":"433530","date":"2014-08-12","type":"BP_BLDG","status":"FAILED"},{"caseNumber":"433530","date":"2015-04-01","type":"BP_BLDG","status":"CLOSED"},{"caseNumber":"433530","date":"2015-06-01","type":"PRECOURT","status":"CLOSED"}],"inspYears":[{"y":2010,"fails":3,"passes":5},{"y":2014,"fails":2,"passes":0}],"taxOwed":0,"taxSnapshot":{"available":true,"asOf":"2022-06","matched":false},"taxDelinquencySnapshotAsOf":"2022-06","taxDelinquencySnapshotAvailable":true,"lat":39.97102489992487,"lng":-75.16957459022264,"geom":{"type":"Polygon","coordinates":[[[-75.169461282,39.970987753],[-75.169697314,39.971016873],[-75.169687899,39.971062046],[-75.169451867,39.971032928],[-75.169461282,39.970987753]]]},"liDistrict":"NORTH","certifications":[],"cityRecordAvailability":{"violations":true,"investigations":true,"appeals":true,"certifications":true,"permits":true,"licenses":true},"zip":"19130","beds":4,"baths":3,"stories":3,"lotArea":1121,"zoning":"RM1","grade":"C+","basement":"A","heater":"A","centralAir":true,"extCond":"4","intCond":"3","garage":null,"homestead":true,"mail":"866 N 20TH ST, PHILADELPHIA PA, 19130","mailOut":false,"appeals":[{"type":"Building standards appeal","grounds":"ON 5/12/2015, THE DEPARTMENT OF LICENSES AND INSPECTIONS ISSUED A NOTICE OF REFUSAL FOR APPLICATION #545322.","status":"CLOSED","outcome":"APPROVED","date":"2015-07-09","number":"25255","relatedPermit":"545322"}],"taxYears":[],"taxNet":0,"taxLien":false,"taxLedgerThrough":2016,"taxLedgerAvailable":true,"timesSold":7,"abated":false,"assessmentExemption":false,"exemptionBasisVerified":false,"valueSeries":[{"y":2016,"v":425000,"taxable":62290,"land":59491,"improvement":365509,"taxableLand":59491,"taxableImprovement":2799,"exemptLand":0,"exemptImprovement":362710},{"y":2017,"v":425000,"taxable":123452,"land":121125,"improvement":303875,"taxableLand":121125,"taxableImprovement":2327,"exemptLand":0,"exemptImprovement":301548},{"y":2018,"v":425000,"taxable":123452,"land":121125,"improvement":303875,"taxableLand":121125,"taxableImprovement":2327,"exemptLand":0,"exemptImprovement":301548},{"y":2019,"v":680000,"taxable":197523,"land":193800,"improvement":486200,"taxableLand":193800,"taxableImprovement":3723,"exemptLand":0,"exemptImprovement":482477},{"y":2020,"v":680000,"taxable":197523,"land":193800,"improvement":486200,"taxableLand":193800,"taxableImprovement":3723,"exemptLand":0,"exemptImprovement":482477},{"y":2021,"v":680000,"taxable":680000,"land":193774,"improvement":486226,"taxableLand":193774,"taxableImprovement":486226,"exemptLand":0,"exemptImprovement":0},{"y":2022,"v":680000,"taxable":680000,"land":193774,"improvement":486226,"taxableLand":193774,"taxableImprovement":486226,"exemptLand":0,"exemptImprovement":0},{"y":2023,"v":630600,"taxable":550600,"land":126120,"improvement":504480,"taxableLand":126120,"taxableImprovement":424480,"exemptLand":0,"exemptImprovement":80000},{"y":2024,"v":630600,"taxable":550600,"land":126120,"improvement":504480,"taxableLand":126120,"taxableImprovement":424480,"exemptLand":0,"exemptImprovement":80000},{"y":2025,"v":651500,"taxable":551500,"land":130300,"improvement":521200,"taxableLand":130300,"taxableImprovement":421200,"exemptLand":0,"exemptImprovement":100000},{"y":2026,"v":651500,"taxable":651500,"land":130300,"improvement":521200,"taxableLand":130300,"taxableImprovement":521200,"exemptLand":0,"exemptImprovement":0},{"y":2027,"v":760000,"taxable":660000,"land":152000,"improvement":608000,"taxableLand":152000,"taxableImprovement":508000,"exemptLand":0,"exemptImprovement":100000}],"taxNow":9120,"familyHeld":false,"lastTransferNominal":false,"permits":[{"number":"250111","date":"2009-11-25","work":"Demolition","type":"BP_DEMO","description":"DEMOLITION PERMIT","status":"COMPLETED","completedDate":"2010-05-10","scope":"INTERIOR DEMOLITION OF INTERIOR NON-LOAD BEARING ASSEMBLIES WITHIN SINGLE FAMILY DWELLING."},{"number":"255021","date":"2010-03-16","work":"Major alteration","type":"BP_ALTER","description":"ALTERATION PERMIT","status":"COMPLETED","completedDate":"2010-08-25","scope":"FULL REHAB OF EXISTING SINGLE FAMILY DWELLING AS PER PLAN."},{"number":"273346","date":"2010-04-16","work":"Plumbing","type":"PP_PLUMBNG","description":"PLUMBING PERMIT","status":"COMPLETED","completedDate":"2010-08-25","scope":"INSTALLATION OF 4 TOILETS, 2 BATHTUBS, 4 LAV SINKS, 1 KITCHEN SINK, 1 LAUNDRY TUB, 1 HOT WATER HEATER"},{"number":"274225","date":"2010-04-21","work":"Electrical","type":"EP_ELECTRL","description":"ELECTRICAL PERMIT","status":"COMPLETED","completedDate":"2010-08-18","scope":"200 AMP SERVICE, 32 OUTLETS,16 SWITCHES, 11 SMOKE DETECTORS, 2 EXHAUST FANS, AND 100 AMP PANEL, AS PER 2008 NEC (CC DIST)"},{"number":"278199","date":"2010-05-10","work":"Mechanical","type":"BP_MECH","description":"MECHANICAL PERMIT","status":"COMPLETED","completedDate":"2010-08-25","scope":"SINGLE FAMILY DWELLING - 60,000 BTU HEAT WITH 2.5 TON A/C WITH DUCTWORK."},{"number":"283203","date":"2010-06-30","work":"Administrative","type":"BP_ADMINST","description":"ADMINISTRATIVE PERMIT","status":"EXPIRED","completedDate":"2012-08-31","scope":"AMEND PERMIT #255021 TO ADD SPIRAL STAIRCASE"},{"number":"346544","date":"2011-06-10","work":"Plumbing","type":"PP_PLUMBNG","description":"PLUMBING PERMIT","status":"COMPLETED","completedDate":"2011-07-05","scope":"REPLACEMENT OF 3/4\" WATER SERVICE"},{"number":"545318","date":"2015-05-14","work":"Zoning","type":"ZP_ZONING","description":"ZONING PERMIT","status":"COMPLETED","completedDate":"2015-05-14","scope":"ERECTION OF A ROOF DECK"},{"number":"545322","date":"2015-07-15","work":"Major alteration","type":"BP_ALTER","description":"ALTERATION PERMIT","status":"COMPLETED","completedDate":"2015-07-29","scope":"FOR THE LEGALIZATION OF A PREVIOUSLY ERECTED ROOF DECK AS APPROVED BY BBS CASE NO 25255. A FINAL INSPECTION IS REQUIRED TO COMPLY VIOLATION #433530. **POST THIS PERMIT** ** POST THE PROJECT INFORMATION SIGN**"}],"storyTag":"Renovated & sold on","storyDelta":3.53,"timeline":[{"y":2010,"k":"permit","w":"Administrative"},{"y":2010,"k":"viol","w":"2 L&I violations"},{"y":2010,"k":"insp","w":"L&I: 3 failed, 5 passed"},{"y":2010,"k":"sale","p":410000},{"y":2011,"k":"permit","w":"Plumbing"},{"y":2014,"k":"viol","w":"3 L&I violations"},{"y":2014,"k":"insp","w":"Inspection failed ×2"},{"y":2015,"k":"permit","w":"Zoning"},{"y":2015,"k":"appeal","w":"Appeal approved"},{"y":2015,"k":"permit","w":"Major alteration"},{"y":2015,"k":"sale","p":515000},{"y":2025,"k":"sale","p":680000}],"rented":false,"licenses":[{"number":"506743","type":"Vacant Residential Property / Lot","status":"Inactive","businessName":"GREEN MICHAEL            ZWICK-GREEN LAURIE","legalName":"GREEN MICHAEL            ZWICK-GREEN LAURIE","address":"866 N 20TH ST","revenueCode":"3219","rentalCategory":null,"units":null,"issuedDate":"2010-06-24","latestIssueDate":"2010-06-24","expirationDate":"2011-02-28","inactiveDate":"2012-12-22"}],"licenseActivity":[{"number":"506743","type":"Vacant Residential Property / Lot","businessName":"GREEN MICHAEL            ZWICK-GREEN LAURIE","legalName":"GREEN MICHAEL            ZWICK-GREEN LAURIE","issuedDate":"2010-06-24","latestIssueDate":"2010-06-24","closureDate":"2012-12-22","expirationDate":"2011-02-28","inactiveDate":"2012-12-22","status":"Inactive","statusLabel":"Inactive","active":false}],"businessLicenseSourceDate":"2026-07-25","signals":[],"legalChecks":[{"id":"use-occupancy","level":"attention","title":"Zoning approval is not the occupancy file","finding":"The history also contains “PERM Z- NEW USE.”","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":"permit-status","level":"attention","title":"A permit row needs file-level verification","finding":"1 permit not marked completed: 283203 (EXPIRED). At least one row also carries a completion date, so the City fields conflict.","why":"Issued work is not the same as approved final work. L&I uses final inspections and required certifications to close construction permits; expired, withdrawn, and completed are different City statuses.","action":"Open the permit file and confirm final inspections, holds, and any resulting occupancy certificate.","url":"https://www.phila.gov/departments/department-of-licenses-and-inspections/inspections-by-permit-type/"},{"id":"investigations","level":"verify","title":"Failed inspections are dated events—not the current condition","finding":"5 failed, 5 passed, and 2 CLOSED investigation outcomes are in the fetched history; the latest dated visit was CLOSED on Jun 1, 2015.","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 #506743: 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":"homestead","level":"verify","title":"Homestead is tied to owner occupancy and the deed","finding":"OPA shows the Homestead Exemption.","why":"Philadelphia limits Homestead to an owner’s primary residence. The City says a deed change can require a new application or update.","action":"A buyer should apply in their own name and not assume the seller’s benefit continues.","url":"https://www.phila.gov/documents/homestead-exemption-application/"},{"id":"violations","level":"clear","title":"No open violation; closed history remains relevant","finding":"The fetched record shows 0 open and 5 historical violations across 3 cases.","why":"A closed case is materially better than an open one, but it does not by itself prove that every altered use, unit, or concealed condition matches today’s approvals.","action":"Use the closed cases to target the inspection and occupancy-file review.","url":"https://www.phila.gov/departments/department-of-licenses-and-inspections/inspections/violation-and-order-types/"}],"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"}]}