2026 taxable assessment $100,990 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $1,071,300; it is not the 2026 billed-year value.
Apartment building report
1827 Diamond St
4 stories · 6,880 sqft · RM1 · built 2018
Apartment building · 7 units · 1827 West Diamond Owner LLC · assessed $1.0M (2026) · 2027 OPA assessment $1.1M. On the 1800 block of Diamond St.
Property summary
Assessment$1,009,9002026 OPA assessment · 2027: $1,071,300
Last sale$1.2MRecorded 2021
Est. tax bill$1,414/year2026 taxable assessment · full-value scenario $14,137/year · basis and term unverified
Tax delinquencyNo 2022 matchNot proof account is current
Permits11Every fetched City permit
Violations0 open18 historical across 8 cases
“Open” reflects records available then historical records keep their source dates estimates are labeled
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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 8811462912026 OPA taxes $100,990 of $1,009,900 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.”
What stands out
From the public recordNew construction
Why it mattersbuilt new under a 2019 permit (reduced taxable assessment shown), sold for $1.2M in 2021.
View supporting records →City Property History
Fetched L&I and zoning records
Every row successfully fetched for this report is counted below. Dataset availability and matching can differ from the City's interactive file; use the official link for current detail.
- Recorded owner
- 1827 West Diamond Owner LLC
- Tax mailing address
- 500 N FRANKLIN TURNPIKE, RAMSEY NJ, 07446
- L&I district
- NORTH
- Building ID (BIN)
- 1549204
- OPA account
- 881146291
Permits11Every dated permit
Violation cases818 violation records · 0 open
Investigations115 failed · 3 passed · 3 closed
Building certifications6Latest result: Certified
Business licenses31 active
Appeals1OPEN · Granted
PermitsPermit number, issued date, work and City status11
Zoning/usePermit 640895
Oct 9, 2015 COMPLETED Completed Oct 9, 2015
FOR THE ERECTION OF AN ATTACHED STRUCTURE FOR USE AS MULTI-FAMILY HOUSEHOLD LIVING (6 UNITS).
ElectricalPermit 852842
Mar 22, 2018 COMPLETED Completed Jun 18, 2019
INSTALL 600AMP SERVICE MAIN DISCONNECT 7 GANG METER SOCKET 6APT/HOUSE METER GROUNDING 1-100AMP PANEL 3-200AMP PANELS 3-150AMP PANELS RUN WIRES INSTALL JUNCTION BOXES LIGHTING FIXTURES TRIMS SWITCHES RECEPTS GFCIS SMOKE DETECTORS INSTALL FIRE ALARM INSTALLATION AS PER 2008 NEC. (NORTH DISTRICT)
PlumbingPermit 875689
Jul 3, 2018 COMPLETED Completed Aug 9, 2019
NEW CONSTRUCTION: INTERIOR PLUMBING; 4 STORY BUILDING; 6 FAMILY DWELLING; BASEMENT WATER CLOSET DISCHARGE SHALL BE INCREASED FROM 3" TO 4" IN ACCORDANCE WITH P904.5.1; SUMPS SHALL BE PROVIDED WITH DUPLEX PUMPS IN ACCORDANCE WITH SECTION 905 ET SEQ PPC; THE SECONDARY ROOF DRAIN POINT OF DISCHARGE MUST DISCHARGE ABOVE GRADE AT A CONSPICUOUS POINT. 1107 OF THE 2009 INTERNATIONAL PLUMBING CODE; 16 WATER CLOSETS, 16 LAVATORY SINKS, 7 SHOWERS, 7 BATH TUBS, 6 KITCHEN SINKS, 6 GARBAGE DISPOSALS, 6 LAUNDRYS, TWO SIX INCH HOUSE DRAINS/TRAP/FAI & 1.5" DWS - THE INSTALLATION WILL COMPY WITH THE PHILADEPHIA PLUBMING CODE 2004
SuppressionPermit 890485
Jul 13, 2018 COMPLETED Completed Aug 9, 2019
FOR THE INSTALLATION OF A TWO (2) INCH FIRE SERVICE LINE WITH BACKFLOW PREVENTOR FOR THE INSTALLATION OF A FIRE SUPPRESSION SYSTEM AS PER NFPA 13R AS PER APPROVED PLANS, CALCULATIONS, AND HISTORICAL COMMISSION APPROVAL.
MechanicalPermit 931421
Nov 30, 2018 COMPLETED Completed Aug 9, 2019
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.(NO PENETRATION OF RATED ASSEMBLIES)(NO ROOF UNITS)
New constructionPermit 722380
Aug 12, 2019 COMPLETED Completed Aug 12, 2019
FOR THE ERECTION OF A FOUR STORY BUILDING FOR USE AS A SIX FAMILY DWELLING. BUILDING TO BE FULLY SPRINKLERED. ALL WORK TO BE DONE PER APPROVED PLANS. IF FIELD CONDITIONS VARY CONTACT DESIGN ENGINEER PRIOR TO THE START OF ANY WORK. SEPARATE PERMITS REQUIRED FOR MECHANICAL, ELECTRICAL, PLUMBING AND FIRE SUPPRESSION WORK.A COVERED WALKWAY OR SIDEWALK CLOSURE SHALL BE REQUIRED WITHIN 10 FEET OF THE BUILDING FAÇADE IN ACCORDANCE WITH SECTION 3306 OF THE 2009 IBC. SEPARATE BUILDING AND/OR STREETS DEPARTMENT PERMIT REQUIRED PRIOR TO THE START OF ANY WORK.
Change of UsePermit 1010208
Jul 9, 2020 Issued
Addition and/or AlterationPermit CP-2022-004324
Dec 20, 2022 Completed Completed Oct 19, 2023
LEVEL II ALTERATIONS (NO CHANGE OF OCCUPANCY CLASSIFICATION) FOR INCREASE IN NUMBER OF DWELLING UNITS TO SEVEN (7) WITHIN AN EXISTING BUILDING AS PER APPROVED PLANS. EXISTING BUILDING FULLY SPRINKLERED. WORK TO INCLUDE CREATION OF SMOKE-PROOF ENCLOSURE, SEPARATE MECHANICAL PERMIT REQUIRED FOR SMOKE CONTROL SYSTEM. *2018 IEBC REVIEW* **SEPARATE PERMITS REQUIRED FOR ANY MEP OR FIRE SUPPRESSION WORK**
Addition and/or AlterationPermit EP-2022-012738
Dec 21, 2022 Completed Completed Sep 5, 2023
Electrical Permit for combo CP-2022-004324
AlterationsPermit PP-2022-018234
Dec 21, 2022 Completed Completed Oct 19, 2023
INSTALL 4 LAVATORIES, 4 WATER CLOSETS, 4 SHOWER/TUBS, 2 WASHING MACHINE BOXES, 2 KITCHEN SINKS, 2 DISHWASHERS AND 2 HOT WATER HEATERS ACCORDING TO THE 2018 PPC.
Addition and/or AlterationsPermit MP-2023-001443
May 16, 2023 Completed Completed Oct 19, 2023
FOR THE INSTALLATION OF PRESSURIZATION SUPPLY FAN ON ROOF. APPLIANCE TO BE INSTALLED IN ACCORDANCE WITH THE MANUFACTURER’S SPECIFICATIONS. FOR USE AS PREVIOUSLY APPROVED. ALL WORK TO BE DONE PER APPROVED PLANS. IF FIELD CONDITIONS VARY CONTACT DESIGN ENGINEER PRIOR TO THE START OF ANY WORK. SEPARATE PERMITS TO BE OBTAINED FOR ALL OTHER WORK.
Violation cases18 individual violation records; resolved history remains visible8
Case 288585CLOSED
STANDARD · Opened Jul 27, 2011 · completed Aug 29, 2011
- EXT A-VACANT LOT CLEAN/MAINTAIViolation 2155330Jul 26, 2011 COMPLIED
- CLIP VIOLATION NOTICEViolation 2155329Jul 26, 2011 COMPLIED
Case 337324CLOSED
STANDARD · Opened Jul 5, 2012 · completed Aug 28, 2012
- CLIP VIOLATION NOTICEViolation 2495840Jul 5, 2012 COMPLIED
- EXT A-VACANT LOT CLEAN/MAINTAIViolation 2495841Jul 5, 2012 COMPLIED
Case 382575CLOSED
STANDARD · Opened May 23, 2013 · completed Jun 20, 2013
- EXT A-VACANT LOT CLEAN/MAINTAIViolation 2805971May 23, 2013 COMPLIED
- CLIP VIOLATION NOTICEViolation 2805970May 23, 2013 COMPLIED
Case 406334CLOSED
STANDARD · Opened Oct 8, 2013 · completed Nov 4, 2013
- CLIP VIOLATION NOTICEViolation 2964418Oct 8, 2013 COMPLIED
- EXT A-VACANT LOT CLEAN/MAINTAIViolation 2964419Oct 8, 2013 COMPLIED
Case 463267CLOSED
STANDARD · Opened Dec 11, 2014 · completed Mar 11, 2015
- EXT A-VACANT LOT CLEAN/MAINTAIViolation 3419482Dec 11, 2014 COMPLIED
- CLIP VIOLATION NOTICEViolation 3419481Dec 11, 2014 COMPLIED
Case 616427CLOSED
CONSTRUCTION SERVICES · Opened Dec 20, 2017 · completed Jun 1, 2018
- DEBRIS REMOVE - CONSTRViolation 4541606Dec 20, 2017 COMPLIED
Case 706430CLOSED
NOTICE OF VIOLATION · Opened Sep 12, 2019 · completed Mar 4, 2022
- DA-HIST DIST-COMPATIBLE DESIGNViolation 211972267Sep 12, 2019 CLOSED
- WORKMANLIKE- BUILDING CODEViolation 211972266Sep 12, 2019 CLOSED
Case CF-2023-114575CLOSED
NOTICE OF VIOLATION · Opened Nov 2, 2023 · completed Dec 8, 2023
- SUBMISSION OF CERTIFICATIONS Violation VI-2023-086265Oct 31, 2023 COMPLIED
- FIRE EXTINGUISHERS Violation VI-2023-086251Oct 31, 2023 COMPLIED
- FDC SIGNAGE REQUIRED Violation VI-2023-086255Oct 31, 2023 COMPLIED
- EXTERIOR STRUCTURE DOORSViolation VI-2023-086256Oct 31, 2023 COMPLIED
- SUPPRESSION SYSTEM TESTING & MAINTENANCE Violation VI-2023-086264Oct 31, 2023 COMPLIED
InvestigationsEvery inspector visit, including CLOSED outcomes11
L_INITIALCase 4191
Jan 8, 2003 FAILED
L_INITIALCase 4191
Nov 7, 2005 CLOSED
CSUINITIALCase 47347
Nov 7, 2005 CLOSED
BP_BLDGCase 616427
Dec 20, 2017 FAILED
BP_BLDGCase 616427
Jun 1, 2018 PASSED
BP_BLDGCase 706430
Sep 12, 2019 FAILED
BP_BLDGCase 706430
Oct 25, 2019 FAILED
BP_BLDGCase 706430
Dec 23, 2019 CLOSED
L&I investigationCase 706430
Mar 4, 2022 PASSED
L&I investigationCase CF-2023-114575
Nov 2, 2023 FAILED
L&I investigationCase CF-2023-114575
Dec 8, 2023 PASSED
Building certificationsInspection result and filed expiration date by L&I building ID6
Fire Alarm CertificationCertification BC-2023-020676
Inspected Oct 10, 2023 Certified Expires Oct 10, 2024
Sprinkler CertificationCertification BC-2023-025039
Inspected Dec 5, 2023 Certified Expires Dec 5, 2024
Fire Alarm CertificationCertification BC-2024-011139
Inspected Apr 18, 2024 Certified Expires Apr 18, 2025
Fire Alarm CertificationCertification BC-2025-010470
Inspected Apr 18, 2025 Certified Expires Apr 18, 2026
Sprinkler CertificationCertification BC-2026-000325
Inspected Sep 2, 2025 Certified Expires Sep 2, 2026
Fire Alarm CertificationCertification BC-2026-010731
Inspected Apr 14, 2026 Certified Expires Apr 14, 2027
Business licensesHistorical and active licenses are both retained3
RentalLicense 820845
1431 POPLAR STREET LIMITED LIABILITY
Revenue code 3202 · First issued Aug 13, 2019 Inactive Expiration Aug 12, 2020 Inactive Oct 11, 2020
RentalLicense 905104
1827 WEST DIAMOND OWNER LLC
Revenue code 3202 · First issued Sep 6, 2022 Inactive Expiration Sep 5, 2025 Inactive Nov 4, 2025
RentalLicense 0988023
1827 WEST DIAMOND OWNER LLC
Revenue code 3202 · First issued Sep 4, 2025 Active Expiration Sep 3, 2026
AppealsApplication status and decision are separate City fields1
Zoning board appealAppeal 38859
Feb 5, 2020 OPEN Granted Related permit 1010208
PERMIT FOR PROPOSING THE ADDITION OF ONE (1) RESIDENTIAL UNIT FOR A TOTAL OF SEVEN (7) UNITS IN AN EXISTING ATTACHED STRUCTURE.
City of Philadelphia OPA, L&I and Zoning Board records, shown as filed. A CLOSED investigation is an outcome label, not a missing visit; an appeal's application status and decision may differ.
Legal due diligence
What this record proves—and what it does not.
These checks are triggered by this property’s actual City rows. They identify the controlling document to verify; they do not declare a use legal, a building safe, or title clear.
1 resolve before relying
5 verify
2 favorable dated record
Resolve before relyingZoning approval is not the occupancy fileUse permit #640895: COMPLETED.
Why it mattersPhiladelphia 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.
Verify nextVerify the lawful use, unit count, associated construction permits, and Certificate of Occupancy with L&I.
Open the controlling City guidance ↗VerifyA rental license does not transfer with the deed1 active Rental License record matched.
Why it mattersIf dwelling space is rented, the buyer must obtain a new annual Rental License; the seller’s license is not transferable. New applications require proof of ownership and legal occupancy, tax compliance, no open L&I violations, and lead compliance where applicable.
Verify nextPlan the buyer’s replacement license before settlement.
Open the controlling City guidance ↗VerifyTax mail goes outside Philadelphia; owner residence still needs verificationOPA mails the property tax record outside Philadelphia (500 N FRANKLIN TURNPIKE, RAMSEY NJ, 07446).
Why it mattersA tax mailing destination does not establish where the owner lives. If a rental owner lives outside Philadelphia, the City requires a managing agent with a Philadelphia mailing address; the owner remains legally responsible.
Verify nextVerify the buyer’s residence and, if the buyer will live outside Philadelphia, identify the Philadelphia managing agent on the new license application.
Open the controlling City guidance ↗VerifyFailed inspections are dated events—not the current condition5 failed, 3 passed, and 3 CLOSED investigation outcomes are in the fetched history; the latest dated visit was PASSED on Dec 8, 2023.
Why it mattersA 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.
Verify nextOpen the parent case/permit for each material failure and confirm its later disposition.
Open the controlling City guidance ↗VerifyA reduced taxable assessment is not a verified abatementOPA’s numeric assessment fields show a reduced taxable assessment; BlockReport has no official program determination for this parcel.
Why it mattersThe numeric treatment can reflect an improvement abatement or another exemption. It does not identify the ordinance, approval, start or end date, or continuation requirements after a transfer. Once OPA verifies a specific active abatement, many common programs attach the benefit to the property for the remaining term rather than ending automatically at sale, but some require a new-owner filing and continued qualifying use or tax compliance.
Verify nextObtain the OPA exemption/abatement determination and history, then underwrite the buyer’s bill from the verified program terms.
Open the controlling City guidance ↗VerifyA separate Commercial Trash account may applyOPA classifies the parcel as apartments. BlockReport does not receive a current Commercial Trash account balance.
Why it mattersPhiladelphia 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.
Verify nextCheck the Commercial Trash account inside the date-effective Property Payoff.
Open the controlling City guidance ↗Favorable dated recordNo open violation; closed history remains relevantThe fetched record shows 0 open and 18 historical violations across 8 cases.
Why it mattersA 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.
Verify nextUse the closed cases to target the inspection and occupancy-file review.
Open the controlling City guidance ↗Favorable dated recordFiled system certifications are current in this datasetFire Alarm Certification: Certified through Apr 14, 2027; Sprinkler Certification: Certified through Sep 2, 2026
Why it mattersFire-protection certifications apply to the named system and inspection period only; they are not a whole-building safety certificate. Philadelphia generally requires annual sprinkler, standpipe, fire-alarm, special-hazard, and emergency-power inspections where those systems exist.
Verify nextConfirm the certificate covers every applicable system and remains accepted by L&I.
Open the controlling City guidance ↗Closing file: checks no public-record summary can replace5 documents/searches to assign before settlement
Property Sales Certification
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.
Next: Obtain the fresh certificate and compare it with the CO, permits, and Atlas overlays.
Official guidance ↗Date-effective City Property Payoff
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.
Next: Request the City statement effective through settlement; read every period and invoice.
Official guidance ↗Professional title and water-lien searches
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.
Next: Use a Pennsylvania lawyer/title company and obtain owner’s title insurance; order the separate water search/payoff.
Official guidance ↗Separate water-lien guidance ↗Seller-specific tax relief is not the buyer’s bill
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.
Next: Have Revenue or OPA identify every current benefit, model the buyer’s bill without seller-specific relief, and confirm any verified abatement in writing.
Official guidance ↗Separate water-lien guidance ↗Seller disclosure and independent inspections
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.
Next: Have the agreement and disclosure reviewed for this transaction’s coverage and exceptions.
Official guidance ↗Informational only—not a legal opinion, title report, code inspection, tax payoff, or substitute for a Pennsylvania lawyer, title company, inspector, or tax professional.
Records to verify together
Rule-based groupings across this property's dated public records. Each flag shows the records that belong in the same verification step and where the inference stops.
Post-purchase work pattern
A recorded purchase followed by 4 permit events matches the early part of a renovate-and-resell sequence.
Evidence: purchase recorded in 2021 · permit activity in 2022, 2023
Limit: This does not show that the property is listed or that a sale is planned.
Transparent record rules, not a score or forecast. Each flag is a prompt to verify the cited records, not a prediction or allegation.
Apartment buildingBuilding report
This is a apartment building, recorded under the city's apartments category. The homeowner tools (rent estimate, homestead playbook) don't apply, so they're hidden. The full record and owner trail are below.
What it is
Apartment building
Apts 5-50 Units Masonry
Owner
1827 West Diamond Owner Llc
OPA tax treatment
Assessed $1.0M
Taxable assessment on the roll
$ / sq ft
$156
above the $151 median for 3,983 apartments parcels citywide
Licensed units
7
active rental license
Assessed value
$1,009,900
2026 OPA · 2027: $1,071,300
Interior area
6,880 sqft
Lot size
2,465 sqft
Stories
4
Built
2018
Zoning
RM1
Who's behind it
1827 West Diamond Owner LLC · corporate / LLC owner
• Tax bills mail to 500 N Franklin Turnpike, Ramsey NJ, 07446 — outside Philadelphia
• Holds an active rental license for this address
Block context
1827 Diamond St sits on the 1800 block of Diamond St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 1825 Diamond St · 1829 Diamond 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, 1:41 AM 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)