2026 assessment
$190K
OPA value, not a listing price
Land report
1029 S 18th St
Property at a glanceVacant lot
1702 Alter Street LP
2027 published assessment
$344K
Future roll, not the current tax bill
Location
1000 block of S 18th St
ZIP 19146
Neighborhood area
Graduate Hospital · Point Breeze
Approximate · based on ZIP 19146
Assessment and City record timeline
The line tracks this property’s published City assessment. Markers show deeds, permits, inspections, licenses, violations, certifications, and appeals on their recorded dates. Select one to read the filing.
Assessments are tax-roll values, not sale prices or appraisals. OPA has published a 2027 assessment of $344,000. It is not yet the billed-year tax basis.
- OPA assessment · 2016$255K 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$255K 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$255K 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$294K 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$287K 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$287K 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$287K 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$509K 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$480K 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$509K 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$190K 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$344K 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 · 2026DemolishedThis 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 · 2007-08-06Major alterationA broad legacy permit work category for a substantial building alteration. It can include changed layouts, partitions, fixtures, finishes, structural work, or occupancy-related work, but only the approved scope and plans say what this permit actually authorized; separate trade permits may be required.What Philadelphia building permits can cover ↗
- Permit · 2007-12-04MechanicalThis 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 · 2024-07-19AlterationsThis 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 · 2024-07-25Full DemolitionThis 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 · 2024-08-13New construction, addition, GFA changeThis 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 · 2024-11-19New 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 · 2024-12-04Party Wall ProtectionThis 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 · 2025-01-14New 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 ↗
- Permit · 2025-01-14New 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 ↗
- Permit · 2025-01-27ExcavationThis 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 · 2025-03-04Minor DemolitionThis 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 · 2025-12-09New 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 ↗
- Permit · 2026-02-17New 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 · 2026-07-23New 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 ↗
- L&I violation · 2010-03-29PERME- ALTER ELEC INSTALLATIONA 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 · 2010-03-29PERMP- INST NEW PLUMBINGA 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 ↗
- License · 2022-08-18Erika Seaver: 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 · 2023-10-16Erika Seaver: 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 ↗
- License · 2008-12-16KENNETH E DEGROOT: 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 · 2012-12-22KENNETH E DEGROOT: 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 ↗
Property assessmentAssessmentTeardownL&I violationPermitLicense
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 record21 events · exact dates, newest first
- PermitNew Construction
- PermitNew Construction
- TeardownDemolished
- PermitNew Construction or Additions
- PermitMinor Demolition
- PermitExcavation
- PermitNew Construction or Additions
- PermitNew Construction or Additions
- PermitParty Wall Protection
- PermitNew Construction
- PermitNew construction, addition, GFA change
- PermitFull Demolition
- PermitAlterations
- LicenseErika Seaver: Rental landlord or residential registration marked inactive
- LicenseErika Seaver: Rental landlord or residential registration initially issued
- LicenseKENNETH E DEGROOT: Rental landlord or residential registration marked inactive
- L&I violationPERME- ALTER ELEC INSTALLATION
- L&I violationPERMP- INST NEW PLUMBING
- LicenseKENNETH E DEGROOT: Rental landlord or residential registration initially issued
- PermitMechanical
- PermitMajor alteration
Verify the public record
Property tax
$2,660/year estimated property tax
2026 taxable assessment $190,000 × 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 $344,000. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 3013553002026 taxable assessment equals the full assessed value.
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.”
Land report
Vacant land
Vacant land. Deeds, ownership, zoning, and the public-source record follow.
What it is
Vacant lot
Row 3 Sty Masonry
Owner
1702 Alter Street LP
Lot size
960 sqft
Zoning
RM1
Block context
1000 block of S 18th St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 1027 S 18th St · 1025 S 18th 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.
Erika SeaverInactive
Rental · Initial issue date Aug 18, 2022 · Terminal license date Oct 16, 2023
KENNETH E DEGROOTInactive
Rental · Initial issue date Dec 16, 2008 · Terminal license date Dec 22, 2012
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 20 dated rows
- PermitNew Construction
Permit FP-2026-001022 · Issued
THE INSTALLATION OF A ONE (1) INCH COMBINED SERVICE LINE FOR A FIRE & DOMESTIC SUPPLY LINE AND FIRE SERVICE LINE WITH REMOTE TOILET CONNECTION PER PLANS. MULTIPURPOSE RESIDENTIAL FIRE SPRINKLER SYSTEM DESIGNED IN ACCORDANCE WITH NFPA 13D. ALL WORK SHALL BE ACCORDANCE WITH APPROVED PLANS, HYDRAULIC CALCULATIONS, AND APPROVED BUILDING PERMIT. SEPARATE PERMITS REQUIRED FOR ALL PLUMBING WORK.
- PermitNew Construction
Permit MP-2026-000803 · Issued
EZ PERMIT DUCTWORK & WARM-AIR APPLIANCES - For the installation of New Ductwork, Registers/Grilles/Diffusers, and Warm-Air Appliances as per attached standards. Deviations from these standards require submission of construction and site plans. Install Carrier ductless mini-split systems with 7 wall-mount units and 2 outdoor units
- PermitNew Construction or Additions
Permit PP-2024-015831 · Issued
Plumbing Permit (Interior) for combo RP-2024-011286
- PermitMinor Demolition
Permit DP-2025-000078 · Completed
FOR THE COMPLETE DEMOLITION OF THE ATTACHED THREE-STORY STRUCTURE BY HAND AND HAND HOLD DEVICESS. PEDESTRIAN PROTECTION TO BE IN PLACE PRIOR TO START OF WORK AND TO BE MAINTAINED DURING ALL DEMOLITION ACTIVITIES. *SEPERATE STREETS DEPARTMENT PERMIT REQUIRE FOR CLOSURE OF RIGHT OF WAY. *21 DAY POSING AND NOTICE REQUIRED PER A-303.2 *A COVERED WALKWAY OR SIDEWALK CLOSURE SHALL BE REQUIRED WITHIN MIN. 8 FEET OF BUILDING FACADE IN ACCORDANCE WITH SECTION 3306 OF THE IBC.
- PermitExcavation
Permit SP-2024-001351 · Issued
Site / Utility Permit for RP-2024-011286
- PermitNew Construction or Additions
Permit PP-2024-015830 · Issued
Plumbing Permit (Exterior Building Drainage) for combo RP-2024-011286
- PermitNew Construction or Additions
Permit PP-2024-015829 · Issued
Plumbing Permit (Water Distribution) for combo RP-2024-011286
- PermitParty Wall Protection
Permit GM-2024-010743 · Completed
For minor construction work at the subject property in accordance with all applicable provisions of the Philadelphia Code, all references codes and standards, and the attached EZ Standard, where included. Deviation from this standard shall result in permit revocation. A separate permit from the Philadelphia Department of Streets is required for any sidewalk and street closures. All means of pedestrian protection required at the site in accordance with the Philadelphia Building Code Chapter 33 shall be in place prior to start of work.
- PermitNew Construction
Permit RP-2024-011286 · Issued
ERECTION OF AN ATTACHED STRUCTURE FOR USE AS SINGLE-FAMILY HOUSEHOLD LIVING. SHEETING AND SHORING AS PRESCRIBED IN GEO TECH REPORT AND EXCAVATION PLAN. SEPARATE PERMITS REQUIRED FOR ELECTRICAL, MECHANICAL, PLUMBING AND SPRINKLER (13D) WORK. UNDERPINNING IS PART THIS PERMIT. ENERGY CODE COMPLIANCE IN ACCORDANCE WITH 2018 IECC. PRIOR TO ISSUANCE OF C.O SUBMITTAL OF AIR BARRIER CHECKLIST AND ENVELOPE TESTING CERTIFICATE IS REQUIRED. BOTH TO BE COMPLETED BY AN APPROVED PARTY.
- PermitNew construction, addition, GFA change
Permit ZP-2024-007581 · Issued
Complete demolition of existing structure on the lot and for Erection of an attached structure with cellar, roof deck and pilot house to use as single-family household living, size and location as shown on the plans.
- PermitFull Demolition
Permit ZP-2024-007429 · Issued
Full demolition of existing structure/s on the lot to remain a vacant lot
- PermitAlterations
Permit PP-2024-010049 · Completed
SEAL LATERAL COMPLETE DEMOLITION
- License terminal eventErika Seaver: Rental landlord or residential registration marked inactive
License 903579 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License issue eventErika Seaver: Rental landlord or residential registration initially issued
License 903579 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License terminal eventKENNETH E DEGROOT: Rental landlord or residential registration marked inactive
License 462997 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- ViolationPERME- ALTER ELEC INSTALLATION
Case 94481 · Violation 1634742 · Code A-301.1/53 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- ViolationPERMP- INST NEW PLUMBING
Case 94481 · Violation 1634745 · Code A-301.1/54 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- License issue eventKENNETH E DEGROOT: Rental landlord or residential registration initially issued
License 462997 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- PermitMechanical
Permit 119450 · EXPIRED
INSTALL NEW 100,000 BTU GASE FIRED FURNACE WITH 3 TON CONDENSOR AND COIL. APPLICANT AGREES TO LIMIT CONSTRUCTION TO EZ PERMIT STANDARD. DEVIATION FROM THIS STANDARD WILL RESULT IN THE REVOCATION OF THIS PERMIT AND THE IMPOSITION OF FURTHER PENALTIES.
- PermitMajor alteration
Permit 94481 · EXPIRED
INTERIOR REHAB OF PROPERTY. APPLICANT AGREES TO LIMIT CONSTRUCTION TO EZ PERMIT STANDARD. DEVIATION FROM THE STANDARD WILL RESULT IN THE REVOCATION OF THIS PERMIT AND IMPOSITION OF FURTHER PENALTIES. ADDITIONAL PERMITS REQUIRED: PLUMBING, ELECTRICAL , MECHANICAL.
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 26, 2026, 6:18 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)