House report
412 S 18th St
2 bd2 ba3 stories2,294 sqftRSA5built 1800
Owner-occupancy signal
Assessment and City record timeline
Published City assessments for this house 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$564K 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$564K 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$564K 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$640K 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$662K 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$964K 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$964K 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$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 · 2024$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 · 2025$1.3M 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$1.3M 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$1.3M 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 ↗
- Deed / sale · 2017Deed / sale $750KA recorded real-estate document or transfer event. The amount and date can be useful history, but the underlying deed and transfer-tax filing control the parties, consideration, and legal effect.How to read the recorded document ↗
- Permit · 2017-11-22ZoningThis 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 · 2018-02-20Addition and/or AlterationThis 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 · 2018-09-04Amend for conversionThis 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 · 2018-12-03PlumbingThis permit category usually covers water, drainage, fixtures, or other plumbing 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 · 2018-12-04AlterationsThis 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 · 2019-01-03New 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 · 2019-04-12New 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 ↗
- Appeal · 2017-11-08Zoning 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 ↗
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.
- PermitNew Construction
- PermitNew Construction
- PermitAlterations
- PermitPlumbing
- PermitAmend for conversion
- PermitAddition and/or Alteration
- PermitZoning
- AppealZoning board appeal
- Deed / saleDeed / sale $750K
Flags: material assessment exemption; legal basis and term unverified · 1 zoning/board appeal on record. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$11,951/year estimated property tax
2026 taxable assessment $853,733 × 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 $1,325,200. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 0811738002026 OPA taxes $853,733 of $1,319,400 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.
$853,733 taxable basis
$1,319,400 scenario basis
- Legal basis or program
- Approval or expiration date
- Treatment after a sale
- Current Tax Center balance
Show the assessment math
2026: ($1,319,400 assessed − $465,667 exempt) × 1.3998% ≈ $11,951/year
Full-assessment scenario: $1,319,400 × 1.3998% ≈ $18,469/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.
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
400 block of S 18th St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 410 S 18th St · 408 S 18th St
L&I license dates · data through Jul 21, 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 21, 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 9 dated rows
- PermitNew Construction
Permit 951052 · Completed
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.
- PermitNew Construction
Permit 938780 · Completed
New branch circuit wiring for power and lighting for 3 bedrooms, 2.5 baths, kitchen, livingroom, diningroom, basement, garage ans air conditioning
- PermitAlterations
Permit 932291 · Completed
INSTALLATION ROUGH FOR 3 BATHROOMS 1 KITCHEN WATER HEATER
- PermitPlumbing
Permit 931974 · COMPLETED
CURB TRAP FAI MAIN DRAIN RAIN CONDUCTOR WATER SERVICE CURB IN
- PermitAmend for conversion
Permit 896780 · Completed
AMEND BUILDING PERMIT# 846947 FOR THE FOLLOWING: 1) TO ELEMINATE PROPOSED CELLAR BELOW GARAGE AS PER PLANS, 2) TO REVISE PROPOSED FOUNDATION DETAILS AS PER PPLANS, 3) ELIMINATE GARAGE DOOR.
- PermitAddition and/or Alteration
Permit 846947 · Completed
INTERIOR RENOVATION THROUGHOUT. RESTORE EXISTING FACADE ELEMENTS AS PER PLANS. INSTALL NEW WINDOWS & DOORS AS PER PLANS. CONSTRUCT NEW 3-STORY ADDITION WITH GARAGE AS PER PLANS. CONSTRUCT NEW ROOF DECK WITH PILOT HOUSE AS PER PLANS. PHC TO REVIEW SHOP DRAWINGS FOR NEW WINDOWS, ENTRY DOOR & OVERHEAD GARAGE DOOR. PHC TO REVIEW SAMPLES OF PROPOSED SIDING ALONG ALLEY WALL & SAMPLES OF NEW BRICK & MORTAR. PHC TO REVIEW CUT SHEETS FOR ANY NEW EXTERIOR LIGHTING FIXTURE REPLACEMENTS.
- PermitZoning
Permit 793168 · COMPLETED
APPLICATION TO REMOVE EXISTING 2ND FLOOR SIDE ADDITION OVER EXISTING (1) CAR CARPORT. REMOVE EXISTING ROOF DECK AND ROOF. PROPOSED 3 STORY SIDE ADDITION WITH (1) COMPACT CAR GARAGE PARKING. PROPOSED NEW ROOF AND PILOT HOUSE TO ACCESS THE ROOF DECK ALL AS PER PLANS.
- AppealZoning board appeal
Appeal 31637 · OPEN · Granted
Related permit 793168 · PERMIT FOR PARTIAL DEMOLITION OF EXISTING ATTACHED STRUCTURE TO REMOVE THE SECOND-FLOOR SIDE ADDITION AND EXISTING ROOF WITH A ROOF DECK. FOR THE ERECTION OF A THREE (3) STORY SIDE ADDITION (MAXIMUM HEIGHT NOT TO EXCEED 38 FT). FOR THE EREC
- Recorded transfer$750K transfer
2017
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 22, 2026, 7:28 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)
