2026 assessment
$735K
OPA value, not a listing price
House report
427 N 20th St
4 bd2 ba1,786 sqftRMX3built 1900
Property at a glanceHouse
Entity-held
ZIP 19130 area
Fairmount · Spring Garden
400 block of N 20th 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$454K 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$454K 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$454K 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$563K 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$582K 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$582K 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$582K 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$726K 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$726K 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$735K 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$735K 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$827K 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 · 2018Deed / sale $300KA 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 · 2017-09-01PlumbingThis 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 · 2019-09-18ZoningThis 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 · 2020-08-01Addition 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 · 2020-12-05Addition 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 · 2021-01-13AlterationsThis 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 · 2021-01-14Addition 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 ↗
- Permit · 2022-10-18Addition 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 ↗
Property assessmentBlock median & rangeZIP 19130 (Fairmount · Spring Garden) medianAssessmentDeed / salePermit
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 record8 events · exact dates, newest first
- PermitAddition and/or Alteration
- PermitAddition and/or Alterations
- PermitAlterations
- PermitAddition and/or Alteration
- PermitAddition and/or Alteration
- PermitZoning
- Deed / saleDeed / sale $300K
- PermitPlumbing
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
$5,387/year estimated property tax
2026 taxable assessment $384,819 × 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 $826,600. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 0841391002026 OPA taxes $384,819 of $734,700 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.
$384,819 taxable basis
Difference to verify+$4,897/year
$734,700 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: ($734,700 assessed − $349,881 exempt) × 1.3998% ≈ $5,387/year
Full-assessment scenario: $734,700 × 1.3998% ≈ $10,284/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
4
Bathrooms
2
Interior
1,786 sqft
livable area
Lot
900 sqft
Basement
Full, unfinished
city code C
Heat
Forced hot air
city code A
Central air
Yes
Exterior condition
New / rehabbed
city code 2
New / rehabbed
Interior condition
New / rehabbed
city code 2
New / rehabbed
Quality grade
C
assessor's grade
ABCDE
Zoning
RMX3
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Recorded owner
Who's behind it
Homebase LLC · corporate / LLC owner
• Tax bills mail to 340 N Lansdowne Ave, Lansdowne PA, 19050 — outside Philadelphia
Block context
400 block of N 20th St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 425 N 20th St · 429 N 20th St
L&I license dates · data through Jul 10, 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 10, 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 8 dated rows
- PermitAddition and/or Alteration
Permit EP-2022-009969 · Completed
Installation of solar array in accordance with signed standard. Amendment: System Reduction to 7 panels
- PermitAddition and/or Alterations
Permit MP-2021-000288 · Completed
EZ PERMIT DUCTWORK & WARM-AIR APPLIANCES - (New 2 zone forced air heating and cooling installation in a single family residence. Installation of 2 furnaces (natural gas), 2 evap coils, 2 condensing units(2 ton and 2.5 ton), and all associated distribution duct. 18 total supply registers and 3 returns.) For the installation if New Ductwork, Registers/Grilles/Diffusers, and Warm-Air Appliances as per attached standards. Deviations from these standards require submission of construction and site plans. (Note: rooftop installations will require plans unless it has already been included on any approved alteration plans.)
- PermitAlterations
Permit PP-2020-012424 · Completed
Plumbing renovations; 1 existing kitchen, 1 existing bath (2nd fl) with new laundry, new 3rd fl bath, new soil stack, new piping and new water heater
- PermitAddition and/or Alteration
Permit EP-2020-010444 · Completed
rewire entire house/ install 200A service
- PermitAddition and/or Alteration
Permit 1051658 · Completed
REMOVE 2ND FLOOR ADDITION APPROX 50SF. PROVIDE 2-STORY ADDITION TO EXTEND REAR OF STRUCTURE APPROX 8'2" X11'6". GENERAL:REPLACE WINDOWS,DOORS, ROOFING AN DUPGRADE FINISHES THROUGHOUT. BASEMENT: EXPAND FOOTPRINT UNDER 2-STORY ADDITION, LOWER FLOOR, POWDER ROOM AND PROVIDE EXTERIOR BASEMENT ACCESSWAY. 1ST FLOOR: REMOVE EXISTING POWDER ROOM AND CLOSET; RENOVATE KITCHEN. 2ND FLOOR: PROVIDE LAUNDRY CENTER. 3RD FLOOR: PROVIDE INTERIOR PARTITIONS TO CREATE A MASTER SUITE, BATHROOM, AND NEW ROOF DECK ACCESSED FROM 3RD FLOOR.
- PermitZoning
Permit 1006397 · COMPLETED
THE PROPOSED PROJECT CONSISTS OF A TWO-STORY REAR ADDITION TO EXISTING SINGLE FAMILY ROWHOUSE. REMOVAL OF EXISTING SECOND FLOOR ADDITION.
- Recorded transfer$300K transfer
2018
- PermitPlumbing
Permit 813272 · COMPLETED
REPLACE 4" MAIN DRAIN IN BASEMENT TO EXISTING AREA DRAIN IN REAR BASEMENT & REPLACE 4" CRACKED SOIL STACK IN SIDE YARD - THE INSTALLATION WILL COMPLY WITH PHILADELPHIA PLUMBING CODE 2004
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 18, 2026, 10:02 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)