2026 assessment
$1.3M
OPA value, not a listing price
House report
421 Chestnut St
3 bd2 ba1 story1,855 sqftCMX4built 1900
Property at a glanceHouse
Individual, other or unknown mailing address
ZIP 19106 area
Old City · Society Hill
400 block of Chestnut St
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$501K 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$684K 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$800K 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$937K 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$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 · 2021$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 · 2022$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 · 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 ↗
- Permit · 2015-02-06Major 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 · 2016-07-28UseThis 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 · 2016-09-07Zoning/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 · 2016-09-09Major 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 · 2017-01-26MechanicalThis 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 · 2017-03-20PlumbingThis 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 · 2017-08-17ElectricalThis permit category usually covers electrical installation, alteration, replacement, or repair. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- Permit · 2017-09-14SuppressionThis permit category usually covers fire-suppression systems or related life-safety 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 · 2018-05-16ElectricalThis permit category usually covers electrical installation, alteration, replacement, or repair. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
Property assessmentBlock median & rangeZIP 19106 (Old City · Society Hill) medianAssessmentPermit
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.
Every dated record9 events · exact dates, newest first
- PermitElectrical
- PermitSuppression
- PermitElectrical
- PermitPlumbing
- PermitMechanical
- PermitMajor alteration
- PermitZoning/use
- PermitUse
- PermitMajor alteration
Flags: material assessment exemption; legal basis and term unverified. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$8,343/year estimated property tax
2026 taxable assessment $596,049 × 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 $1,264,500. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 8880377082026 OPA taxes $596,049 of $1,264,500 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.
$596,049 taxable basis
Difference to verify+$9,357/year
$1,264,500 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: ($1,264,500 assessed − $668,451 exempt) × 1.3998% ≈ $8,343/year
Full-assessment scenario: $1,264,500 × 1.3998% ≈ $17,700/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.
Where the record looks off
Conflicts in City paperwork. Flags on the data, not the property.
"Built 1900" is usually a placeholder
Philadelphia records use 1900 as a stand-in when the real construction year was never documented. Treat the age as unknown, not as 120+ years.
The property, on paper
OPA physical field record.
Bedrooms
3
Bathrooms
2
Stories
1
Interior
1,855 sqft
livable area
Exterior condition
Above average
city code 3
Above averageBelow average
Interior condition
Above average
city code 3
Above averageBelow average
Quality grade
B+
assessor's grade
ABCDE
Zoning
CMX4
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
400 block of Chestnut St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 421 Chestnut St · 421 Chestnut St
L&I license dates · data through Jul 24, 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 24, 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
- PermitElectrical
Permit 866840 · COMPLETED
INSTALL NEW NAC PANEL AND DEVICES TO AN EXISTING FIRE ALARM SYSTEM AS PER NFPA 72. (CC DISTRICT)
- PermitSuppression
Permit 777114 · COMPLETED
FOR THE INSTALLATION OF AN AUTOMATIC SPRINKLER SYSTEM IN ACCORDANCE WITH NFPA 13 ON THE SIXTH FLOOR WITHIN CONSOLIDATED UNIT 601 (ENTIRE FLOOR IS UNIT) OF AN EXISTING MULTI-FAMILY BUILDING, TO TIE IN WITH EXISTING FIRE SUPPRESSION SYSTEM THROUGHOUT BUILDING USING 4" FIRE SERVICE LINE, 4" BACKFLOW PREVENTION DEVICE, EXISTING FIRE PUMP, AND 4" STANDPIPE WITHIN EXIT STAIRWAY, AS PER PLANS.
- PermitElectrical
Permit 800852 · COMPLETED
INSTALL 2 PANEL BOARDS 130 RECEPTS, 27 GPI RECEPTS, 9 HEAT PUMP FEEDS, 3 RANG/OVEN, ALL LIGHTING FURNISH BY OWNER, 23 SWITCHES, 4 HEATED FLOOR MATS, 1 OUTDOOR UNIT CONNECTIONS AS PER 2008 NEC (CC DISTRICT)
- PermitPlumbing
Permit 744789 · COMPLETED
ALTERATION: INTERIOR PLUMBING;6TH FLOOR RESIDENTIOAL CONDOMMIUM UNIT; RECONSTRUCTION OF FRONT PORTION TO CONSOLIDATE ALL UNITS ON THE SIXTH FLOOR INTO ONE DWELLING UNIT;(20) DWELLING UNIT BUILDING - THE INSTALLATION WILL COMPLY WITH THE PHILADELPHIA PLUMBING CODE 2004
- PermitMechanical
Permit 743787 · COMPLETED
FOR THE INSTALLATION OF A NEW HVAC ROOF TOP UNIT AND INTERIOR DUCT WORK AS PER PLAN.
- PermitMajor alteration
Permit 710884 · COMPLETED
LEVEL II ALTERATIONS (NO CHANGE OF OCCUPANCY CLASSIFICATION) TO INCLUDE DEMOLITION AND RECONSTRUCTION OF FRONT PORTION TO CONSOLIDATE ALL UNITS ON THE SIXTH FLOOR INTO ONE DWELLING UNIT AS PER APPROVED PLANS. EXISTING BUILDING FULLY SPRINKLERED. **SEPARATE PERMITS REQUIRED FOR MEP & FIRE SUPPRESSION WORK**
- PermitZoning/use
Permit 720002 · CLOSED
THIS APPLICATION IS FOR THE RENOVATION OF THE EXISTING 6TH FLOOR RESIDENTIOAL CONDOMMIUM UNIT AT THE BANK BUILDING, 421 CHESTNUT ST. THE MODIFICATION INCLUDES THE RENOVATION OF 6000 SF INTERIOR SPACE AND THE RECONSTRUCTION OF 1,7000SF STRUCTURE BUILT IN 2005. THE TOTAL SQUARE FOOTAGE IS 7,700 SF WITH THE REFURBISHMENT OF THE 1,300SF OUTDOOR TERRACE. NO ADDITIONAL BUILDING AREA SF AND NO ADDITIONAL HEIGHT WILL BE ADDED TO THE EXISTING BUILDING. REFER TO THE ATTACHED DRAWINGS.
- PermitUse
Permit 706990 · COMPLETED
THIS APPLICATION IS FOR THE RENOVATION OF THE EXISTING 6TH FLOOR RESIDENTIOAL CONDOMMIUM UNIT AT THE BANK BUILDING, 421 CHESTNUT ST. THE MODIFICATION INCLUDES THE RENOVATION OF 6000 SF INTERIOR SPACE AND THE RECONSTRUCTION OF 1,7000SF STRUCTURE BUILT IN 2005. THE TOTAL SQUARE FOOTAGE IS 7,700 SF WITH THE REFURBISHMENT OF THE 1,300SF OUTDOOR TERRACE. NO ADDITIONAL BUILDING AREA SF AND NO ADDITIONAL HEIGHT WILL BE ADDED TO THE EXISTING BUILDING. REFER TO THE ATTACHED DRAWINGS.
- PermitMajor alteration
Permit 581963 · COMPLETED
EXTERIOR ALTERATIONS, REPLACE PORTION OF ROOF MEMBRANE AND UNDERLAYMENT, SCUPPER, REMOVE AND REPLACE DECORATIVE GLASS GUARD RAILS WEST & SOUTH WALLS AS PER ENGINEERS DESIGN PLANS - NO ROOF DECKS ON THIS PERMIT. NO WORK TO FRONT FACADE PER PHC RAILING TO BE REPLACED IN KIND.
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 25, 2026, 6:39 PM 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)