2026 assessment
$691K
OPA value, not a listing price
Mixed-use property report
251 S 12th St
4 stories2,664 sqftRM1built 1920
Property at a glanceApartment building
Mir Group LLC
2027 published assessment
$998K
Future roll, not the current tax bill
Location
200 block of S 12th St
ZIP 19107
Neighborhood area
Washington Square West · Chinatown
Approximate · based on ZIP 19107
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 $998,300. It is not yet the billed-year tax basis.
- OPA assessment · 2026$691K 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$998K 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 · 2000Deed / sale $295KA 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 ↗
- Deed / sale · 2000Deed / sale $295KA 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 ↗
- Deed / sale · 2023Deed / sale $915KA 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 · 2023-11-27Change of 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 · 2023-11-29Addition 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 · 2024-01-24AlterationsThis 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 · 2024-02-02New 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 · 2024-03-11Addition 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 · 2024-04-03Addition and/or AlterationsThis 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 ↗
- License · 2024-11-22MIR Group LLC (Same): 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 · 2004-03-22PAUL J CHRISTNER III: 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 · 2022-04-29PAUL J CHRISTNER III: 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 assessmentAssessmentDeed / salePermitLicense
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 record12 events · exact dates, newest first
- LicenseMIR Group LLC (Same): Rental landlord or residential registration initially issued
- PermitAddition and/or Alterations
- PermitAddition and/or Alteration
- PermitNew Construction
- PermitAlterations
- PermitAddition and/or Alteration
- PermitChange of Use
- Deed / saleDeed / sale $915K
- LicensePAUL J CHRISTNER III: Rental landlord or residential registration marked inactive
- LicensePAUL J CHRISTNER III: Rental landlord or residential registration initially issued
- Deed / saleDeed / sale $295K
- Deed / saleDeed / sale $295K
Verify the public record
Property tax
$9,670/year estimated property tax
2026 taxable assessment $690,800 × 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 $998,300. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 0540000042026 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.”
Property report
Mixed-use property
Apartment building, recorded in the City's mixed-use category. The public record and owner trail follow.
What it is
Apartment building
Str/Off+Apt 4 Sty Masonry
Owner
Mir Group LLC
$ / sq ft
$375
assessed value ÷ interior sqft
Corridor
Market East
city commercial corridor
Licensed units
3
active rental license
Interior area
2,664 sqft
Lot size
1,620 sqft
Stories
4
Built
1920
Zoning
RM1
Recorded owner
Who's behind it
Mir Group LLC · corporate / LLC owner
• Tax bills mail to 1112 Norwalk Rd, Philadelphia PA, 19115
• Holds an active rental license for this address
Block context
200 block of S 12th St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 249 S 12th St · 253 S 12th 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.
MIR Group LLC (Same)Active
Rental · Initial issue date Nov 22, 2024 · Filed expiration Nov 21, 2026
PAUL J CHRISTNER IIIInactive
Rental · Initial issue date Mar 22, 2004 · Terminal license date Apr 29, 2022
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 11 dated rows
- License issue eventMIR Group LLC (Same): Rental landlord or residential registration initially issued
License 0966308 · Active
License event. Registration does not prove present operation or storefront occupancy.
- PermitAddition and/or Alterations
Permit MP-2024-000413 · Completed
FOR THE INSTALLATION OF REGISTERS, DIFFUSERS, AND APPLIANCES WITH ASSOCIATED DUCTWORK. APPLIANCES TO BE INSTALLED IN ACCORDANCE WITH THE MANUFACTURER’S SPECIFICATIONS. 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 ALL OTHER WORK. ** SUBJECT TO THE FOLLOWING CONDITION OF THE PHILADELPHIA HISTORICAL COMMISSION: No work to the front facade or front mansard.
- PermitAddition and/or Alteration
Permit EP-2024-001767 · Completed
INSTALL 400 AMP 1P 120/240V MAIN SERVICE FOR 3 APARTMENTS AND LANDLORD PANEL. INSTALL ALL WIRING THROUGHOUT 3 APARTMENTS AND COMMON AREAS. TRIMOUT ALL 3 APARTMENTS AND COMMON AREAS. INSTALL LIGHTS FIXTURES, OUTLETS, SWITCHES, AND SMOKE ALARMS. INSTALL AND TRIMOUT THE ENTIRE FIRE ALARM SYSTEM AS PER PLANS. ALL WORK IS TO BE DONE ACCORDING TO APPROVED DRAWINGS -2017 NEC, 2016 NFPA-72 AND 2018 PHILA FIRE CODE.
- PermitNew Construction
Permit FP-2024-000195 · Completed
INSTALL NEW FIRE SUPPRESSION SYSTEM COMPLYING WITH NFPA 13R THROUGHOUT THE BUILDING TO INCLUDE 2" MAIN FIRE SERVICE LINE WITH A 2" WILKINS 950 XLT2 BACKFLOW PREVENTION ASSEMBLY AND ONE (1) STANDPIPE RISER COMPLYING WITH NFPA 14 AS PER APPROVED PLANS. ALL WORK SHALL BE PERFORMED BY A FIRE SUPPRESSION CONTRACTOR LICENSED BY THE CITY OF PHILADELPHIA. AMENDMENT (2-5-2024): CORRECTED PERMIT LANGUAGE AMENDMENT (4-4-2024): CORRECTED FDC LOCATION
- PermitAlterations
Permit PP-2024-001097 · Completed
INSTALL 21 FIXTURES.
- PermitAddition and/or Alteration
Permit CP-2023-005387 · Completed
LEVEL III ALTERATIONS WITH COMPLETE CHANGE OF OCCUPANCY TO CREATE A THREE (3) FAMILY DWELLING IN AN EXISTING FOUR STORY BUILDING AS PER APPROVED PLANS. BUILDING TO BE FULLY SPRINKLERED. *2018 IEBC REVIEW* **SEPARATE PERMITS REQUIRED FOR MEP & FIRE SUPPRESSION WORK**
- PermitChange of Use
Permit ZP-2023-012122 · Issued
Residential - Household Living - Multi-Family
- Recorded transfer$915K transfer
2023
- License terminal eventPAUL J CHRISTNER III: Rental landlord or residential registration marked inactive
License 213558 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License issue eventPAUL J CHRISTNER III: Rental landlord or residential registration initially issued
License 213558 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- Recorded transfer$295K transfer
2000
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
- Imagery: Street photo © Google · Aerial © Esri, Maxar
Methodology & freshness
This report was assembled Jul 26, 2026, 11:30 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)