2026 assessment
$1.2M
OPA value, not a listing price
Multi-family report
818 Diamond St
3 stories4,890 sqftCMX1built 2022
Property at a glanceMulti-family
Entity-held
ZIP 19122 area
Olde Kensington · North Philadelphia
800 block of Diamond St
Assessment and City record timeline
Published City assessments for this building against its block and ZIP. Dated City filings are marked on the same line. Select one to read it. Assessments are tax-roll values, not sale prices or appraisals.
- OPA assessment · 2016$5K 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$15K 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$15K 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$32K 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$32K 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$123K 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$1.1M 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$1.2M 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$1.2M 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$1.1M 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 ↗
- Land buy · 2018Land record $100KA land-record event associated with this parcel. Review the recorded instrument to determine whether it reflects a conveyance, parcel change, or another filing.How to read the recorded document ↗
- Land buy · 2020Land record $169KA land-record event associated with this parcel. Review the recorded instrument to determine whether it reflects a conveyance, parcel change, or another filing.How to read the recorded document ↗
- Permit · 2017-10-20ZoningThis 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 · 2018-01-10Zoning/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 · 2021-01-08New 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 · 2021-12-06New 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 · 2022-03-16New Construction or AdditionsThis 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 ↗
- Inspection · 2022-03-16L&I investigationA 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 ↗
- Permit · 2022-03-23New 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 · 2022-05-20New 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 · 2022-08-08New Construction or AdditionsThis 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 ↗
- L&I violation · 2007-04-13VACANT LOT KEEP CLEAN GET LICA 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 · 2007-04-13CLIP VIOLATION NOTICEA 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 · 2010-06-14CLIP VIOLATION NOTICEA 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 · 2010-06-14VACANT LOT STANDARDA 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 · 2010-12-22VACANT LOT KEEP CLEAN GET LICA 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 · 2010-12-22CLIP VIOLATION NOTICEA 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 · 2011-08-08CLIP VIOLATION NOTICEA 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 · 2011-08-08VACANT LOT STANDARDA 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 · 2003-07-15L_INITIALA 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 · 2005-05-04L_FINALA 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 · 2022-01-31L&I investigationA 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 · 2022-01-31L&I investigationA 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 · 2022-01-31L&I investigationA 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 · 2022-02-01L&I investigationA 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 · 2022-02-25L&I investigationA 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 · 2022-04-26L&I investigationA 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 · 2023-09-21diamond st holdings: 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 ↗
- Appeal · 2017-02-07Zoning 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 ↗
Property assessmentBlock median & rangeZIP 19122 (Olde Kensington · North Philadelphia) medianAssessmentLand buyL&I violationAppealPermitInspectionLicense
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.
Highlight
Every dated record29 events · exact dates, newest first
- Licensediamond st holdings: Rental landlord or residential registration initially issued
- PermitNew Construction or Additions
- PermitNew Construction
- InspectionL&I investigation
- PermitNew Construction
- PermitNew Construction or Additions
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- PermitNew Construction
- PermitNew Construction
- Land buyLand record $169K
- PermitZoning/use
- Land buyLand record $100K
- PermitZoning
- AppealZoning board appeal
- L&I violationCLIP VIOLATION NOTICE
- L&I violationVACANT LOT STANDARD
- L&I violationVACANT LOT KEEP CLEAN GET LIC
- L&I violationCLIP VIOLATION NOTICE
- L&I violationCLIP VIOLATION NOTICE
- L&I violationVACANT LOT STANDARD
- L&I violationVACANT LOT KEEP CLEAN GET LIC
- L&I violationCLIP VIOLATION NOTICE
- InspectionL_FINAL
- InspectionL_INITIAL
Flags: material assessment exemption; legal basis and term unverified · active rental license · 1 zoning/board appeal on record. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$3,360/year estimated property tax
2026 taxable assessment $240,000 × 1.3998%. This is an estimate, not a bill or account balance. The City maintains payments, credits, interest, and the current amount due.
OPA has published a 2027 assessment of $1,142,500. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 2010804502026 OPA taxes $240,000 of $1,200,000 assessed. The assessment fields alone do not identify a program, approval date, expiration, or buyer eligibility.
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.”
The assessment exemption gap
OPA's 2026 roll shows a partial assessment exemption. The annual difference is measurable; the reason for it and what happens after a sale are not established here.
$240,000 taxable basis
Difference to verify+$13,438/year
$1,200,000 scenario basis
The assessment roll does not identify
- Legal basis or program
- Approval or expiration date
- Treatment after a sale
- Current Tax Center balance
Show the assessment math
2026: ($1,200,000 assessed − $960,000 exempt) × 1.3998% ≈ $3,360/year
Full-assessment scenario: $1,200,000 × 1.3998% ≈ $16,798/year
Do not treat the full-assessment scenario as inevitable or assume the current relief transfers. Obtain the approval history and verify the live Tax Center account before relying on either number.
The property, on paper
OPA physical field record.
Stories
3
Interior
4,890 sqft
livable area
Lot
1,640 sqft
Basement
Full
city code D
Central air
Yes
Garage
2 spaces
Exterior condition
Newer construction
city code 1
Newer construction
Interior condition
Newer construction
city code 1
Newer construction
Zoning
CMX1
city zoning code
Zoning appeals
1
OPEN · Granted · 2017
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Recorded owner
Who's behind it
Diamond Street Holdings LLC · corporate / LLC owner
• Tax bills mail to P O Box 48, Lakewood NJ, 08701 — outside Philadelphia
• Holds an active rental license for this address
Block context
800 block of Diamond St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 816 Diamond St · 814 Diamond St
L&I license dates · data through Jul 25, 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 25, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
diamond st holdingsActive
Rental · Initial issue date Sep 21, 2023 · Filed expiration Sep 20, 2026
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.
Open every source row 27 dated rows
- License issue eventdiamond st holdings: Rental landlord or residential registration initially issued
License 933767 · Active
License event. Registration does not prove present operation or storefront occupancy.
- PermitNew Construction or Additions
Permit PP-2022-006054 · Completed
8 WC,8 TUBS,8 LAVATORIES,4 KS,4 LL,4 WH AS PER PPC 2018
- PermitNew Construction
Permit EP-2022-003389 · Completed
INSTALL A 600 AMP SERVICE, (6) GANG METER BANK, (1) 150 AMP PANEL & FEEDER. (3) 125 AMP PANELS & FEEDERS, (1) 100 AMP PANEL & FEEDER. INSTALL WIRING THROUGHOUT THE COMMON AREAS AND FOUR DWELLING UNITS. INSTALL LIGHTS NORMAL AND EMERGENCY, SWITCHES, SENSORS AND RECEPTACLES. PROVIDE POWER FOR THE MECHANICAL AND HVAC EQUIPMENT. INSTALL A NEW FIRE ALARM SYSTEM THROUGHOUT. ALL WORK IN ACCORDANCE WITH THE 2017 NEC & 2016 NFPA-72.
- InvestigationL&I investigation
Case CF-2022-007742 · PASSED
The cited inspection visit was marked passed.
- PermitNew Construction
Permit MP-2022-001281 · Completed
FOR THE INSTALLATION OF AN HVAC MECHANICAL SYSTEM TO INCLUDE CONDENSING UNITS, UNIT HEATERS, AIR DEVISES, DIFFUSERS/REGISTERS/GRILLES, AND ASSOCIATED DUCTWORK. APPLIANCE TO BE INSTALLED IN ACCORDANCE WITH MANUFACTURER'S SPECIFICATIONS. ALL WORK TO BE DONE PER APPROVED PLANS. NO INTERIOR FIT-OUT THIS PERMIT. SEPARATE PERMITS WILL BE REQUIRED FOR ANY OTHER WORK. IF FIELD CONDITIONS VARY CONTACT THE DESIGN ENGINEER PRIOR TO THE START OF ANY WORK.
- PermitNew Construction or Additions
Permit PP-2022-001671 · Completed
Install new 1 inch water distribution service 2 inch fire and new 6 inch sewer combo. 2 curb traps and FAI.
- InvestigationL&I investigation
Case CF-2022-007742 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2022-007742 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2022-007742 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2022-007742 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitNew Construction
Permit FP-2021-003311 · Completed
FOR THE INSTALLATION OF TWO (2) INCH FIRE SERVICE LINES WITH TWO (2) INCH BACKFLOW PREVENTERS AND AUTOMATIC FIRE SUPPRESSION SYSTEMS AS PER THE NFPA 13R SYSTEM. ALL WORK SHALL BE DONE IN ACCORDANCE WITH APPROVED PLANS/HYDRAULIC CALCULATIONS. SEPARATE PERMIT REQUIRED FOR ANY OTHER WORK.
- PermitNew Construction
Permit 1003524 · Completed
FOR THE ERECTION OF AN ATTACHED FOUR (4) STORY STRUCTURE OF TYPE VA CONSTRUCTION WITH A CELLAR AND A ROOF DECK WITH A ROOF ACCESS STRUCTURE. FOR FOUR (4) DWELLING UNITS AND AN ACCESSORY GARAGE WITH LAYOUT AS PER PLANS. ALL WORK AS PER PLANS. SEPARATE PERMITS REQUIRED FOR ANY MECHANICANICAL, ELECTRICAL, PLUMBING AND FIRE SUPPRESSION WORK. AMENDMENT (7/20/2021) Layout Revisions to Unit Plans at 3rd and 4th Floor as per plans.
- Land recordLand record
2020
- PermitZoning/use
Permit 767267 · COMPLETED
FOR THE ERECTION OF AN ATTACHED BUILDING WITH A ROOF DECK AND A ROOF DECK ACCESS STRUCTURE. SIZE AND LOCATION AS SHOWN ON APPROVED PLANS. FOR MULTIFAMILY HOUSEHOLD LIVING FOR FOUR (4) DWELLING UNITS AND TWO INTERIOR ACCESSORY PARKING SPACES. NO SIGNS ON THIS APPLICATION.
- Land recordLand record
2018
- PermitZoning
Permit 704835 · COMPLETED
FOR A LOT CONSOLIDATION TO CREATE ONE (1) LOT (LOT #1) FROM TWO (2) EXISTING LOTS (818 DIAMOND ST & 820 DIAMOND ST.) SIZE AND LOCATION AS SHOWN ON APPROVED PLANS.
- AppealZoning board appeal
Appeal 29279 · OPEN · Granted
Related permit 704835 · PERMIT FOR THE ERECTION OF AN ATTACHED BUILDING WITH A ROOF DECK AND A ROOF DECK ACCESS STRUCTURE. SIZE AND LOCATION AS SHOWN ON SUBMITTED PLANS. FOR MULTIFAMILY HOUSEHOLD LIVING FOR FOUR (4) DWELLING UNITS.
- ViolationCLIP VIOLATION NOTICE
Case 290601 · Violation 2168739 · Code CP-01 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- ViolationVACANT LOT STANDARD
Case 290601 · Violation 2168740 · Code PM-306.0/2 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- ViolationVACANT LOT KEEP CLEAN GET LIC
Case 262286 · Violation 1928698 · Code PM-306.0/91 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 262286 · Violation 1928697 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 239235 · Violation 1717140 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationVACANT LOT STANDARD
Case 239235 · Violation 1717141 · Code PM-306.0/2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationVACANT LOT KEEP CLEAN GET LIC
Case 108659 · Violation 1103110 · Code PM-306.0/91 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 108659 · Violation 1103109 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL_FINAL
Case 12406 · PASSED
The cited inspection visit was marked passed.
- InvestigationL_INITIAL
Case 12406 · CLOSED
City marked the record closed; open the case for the closing reason.
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 27, 2026, 11:06 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)