2026 taxable assessment $294,700 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $280,900; it is not the 2026 billed-year value.
House report
3327 Knorr St
3 bd · 1 ba · 2 stories · 1,280 sqft · RSA5 · built 1945
Absentee individual · assessed $295K (2026) · 2027 OPA assessment $281K. On the 3300 block of Knorr St.
Property summary
Assessment$294,7002026 OPA assessment · 2027: $280,900
Last sale—No sale value available
Est. tax bill$4,125/year2026 taxable assessment × 1.3998%
Tax delinquencyNo 2022 matchNot proof account is current
Permits0Every fetched City permit
Violations1 open5 historical across 4 cases
“Open” reflects records available then historical records keep their source dates estimates are labeled
BlockReport AI · cited public records
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Property tax
The estimate, live balance, and back-tax record are different.
BlockReport can calculate the annual tax from the City’s taxable assessment. Payments, credits, interest, and a current amount due live separately in Philadelphia Tax Center.
A Tax Center balance is net of bills, payments, credits, interest, and adjustments. A credit—or an amount due—is not automatically “back taxes.”
OPA 5512180002026 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.”
What stands out
From the public recordHistory
Why it mattersInspection failed ×3 (2006); 2 L&I violations (2011); L&I: 1 failed, 1 passed (2011); 2 L&I violations (2023); L&I: 2 failed, 1 passed (2023); L&I violation (2025); Inspection failed ×2 (2025).
View supporting records →City Property History
Fetched L&I and zoning records
Every row successfully fetched for this report is counted below. Dataset availability and matching can differ from the City's interactive file; use the official link for current detail.
- Recorded owner
- Dubak John Jr & Boyer Amelia Joan
- Tax mailing address
- 40 CHESTNUT DR, RICHBORO PA, 18954
- L&I district
- EAST
- Building ID (BIN)
- —
- OPA account
- 551218000
Permits0No match
Violation cases45 violation records · 1 open
Investigations1610 failed · 2 passed · 4 closed
Building certifications0No match
Business licenses0No match
Appeals0No match
PermitsPermit number, issued date, work and City status0
No permits matched this parcel in the fetched City dataset.
Violation cases5 individual violation records; resolved history remains visible4
Case 296099CLOSED
STANDARD · Opened Sep 8, 2011 · completed Oct 13, 2011
- LICENSE-RES SFD/2FDViolation 2205830Sep 8, 2011 COMPLIED
- DRAINAGE-YARD DRAIN REPAIRViolation 2205831Sep 8, 2011 COMPLIED
Case CF-2023-033744CLOSED
NOTICE OF VIOLATION · Opened Apr 21, 2023 · completed May 11, 2023
- EXTERIOR AREA WEEDSViolation VI-2023-025638Apr 20, 2023 COMPLIED
Case CF-2023-033943IN VIOLATION
NOTICE OF VIOLATION · Opened Apr 21, 2023
- RENTAL LICENSE- ONE & TWO FAMILY (R3)Violation VI-2023-025831Apr 21, 2023 OPEN
Case CF-2025-031796CLOSED
NOTICE OF VIOLATION · Opened Apr 22, 2025 · completed Jun 6, 2025
- RUBBISH & GARBAGEViolation VI-2025-024033Apr 22, 2025 COMPLIED
InvestigationsEvery inspector visit, including CLOSED outcomes16
L_CLIPCase 37698
Apr 14, 2005 FAILED
L_CLIPCase 37698
Apr 29, 2005 CLOSED
L_CLIPCase 43910
Aug 12, 2005 FAILED
L_CLIPCase 43910
Aug 29, 2005 CLOSED
HCEU INSPCase 56584
Mar 28, 2006 FAILED
HCEU INSPCase 56584
Apr 24, 2006 CLOSED
HCEU INSPCase 73497
Aug 3, 2006 FAILED
HCEU INSPCase 73497
Aug 3, 2006 FAILED
HCEU INSPCase 73497
Aug 17, 2006 CLOSED
HCEU INSPCase 296099
Sep 8, 2011 FAILED
HCEU INSPCase 296099
Oct 13, 2011 PASSED
L&I investigationCase CF-2023-033744
Apr 21, 2023 FAILED
L&I investigationCase CF-2023-033943
Apr 21, 2023 FAILED
L&I investigationCase CF-2023-033744
May 11, 2023 PASSED
L&I investigationCase CF-2025-031796
Apr 22, 2025 FAILED
L&I investigationCase CF-2025-031796
May 23, 2025 FAILED
Building certificationsInspection result and filed expiration date by L&I building ID0
No building certifications matched this parcel in the fetched City dataset.
Business licensesHistorical and active licenses are both retained0
No business licenses matched this parcel in the fetched City dataset.
AppealsApplication status and decision are separate City fields0
No appeals matched this parcel in the fetched City dataset.
City of Philadelphia OPA, L&I and Zoning Board records, shown as filed. A CLOSED investigation is an outcome label, not a missing visit; an appeal's application status and decision may differ.
Legal due diligence
What this record proves—and what it does not.
These checks are triggered by this property’s actual City rows. They identify the controlling document to verify; they do not declare a use legal, a building safe, or title clear.
1 resolve before relying
2 verify
Resolve before relying1 open L&I violation5 violation rows are retained in the City ledger.
Why it mattersOpen notices can accrue fees, block permits or license renewal, and move to court or collection. Standard initial notices generally have a 30-day appeal window; unsafe or imminently-dangerous notices have a much shorter window.
Verify nextRead the notice—not only the summary status—and confirm reinspection, fees, and appeal posture with L&I.
Open the controlling City guidance ↗VerifyFailed inspections are dated events—not the current condition10 failed, 2 passed, and 4 CLOSED investigation outcomes are in the fetched history; the latest dated visit was FAILED on May 23, 2025.
Why it mattersA PASSED or FAILED value applies to that inspection visit. CLOSED is a separate source status; none of the three alone proves the parent permit or violation case closed—or describes today’s condition.
Verify nextOpen the parent case/permit for each material failure and confirm its later disposition.
Open the controlling City guidance ↗VerifyThe latest nominal transfer is not a market sale—or a title opinionThe latest deed in the assembled record moved for nominal consideration.
Why it mattersA $1 or nominal deed can be a valid family, estate, or entity transfer. It does not establish a sale price, clear title, or by itself prove a tangled title.
Verify nextRead the recorded deed and have the title search confirm every grantor, grantee, estate/probate step, lien, and authority to sell.
Open the controlling City guidance ↗Closing file: checks no public-record summary can replace5 documents/searches to assign before settlement
Property Sales Certification
The seller must obtain Philadelphia’s certificate showing the base zoning, last use in the zoning record, and open violations. The City warns that it does not prove Building Code occupancy or show zoning overlays.
Next: Obtain the fresh certificate and compare it with the CO, permits, and Atlas overlays.
Official guidance ↗Date-effective City Property Payoff
The Tax Center Property Payoff covers Real Estate Tax, Commercial Trash, and L&I abatement-work invoices. Philadelphia says it does not include business-tax debts or liens, water and sewer charges, or fines for code violations.
Next: Request the City statement effective through settlement; read every period and invoice.
Official guidance ↗Professional title and water-lien searches
OPA ownership, deed summaries, and a zero tax balance are not clear title. Mortgages, judgments, municipal claims, water liens, easements, heirs, and other encumbrances require separate searches.
Next: Use a Pennsylvania lawyer/title company and obtain owner’s title insurance; order the separate water search/payoff.
Official guidance ↗Separate water-lien guidance ↗Seller-specific tax relief is not the buyer’s bill
LOOP and low-income or senior Real Estate Tax freezes depend on the qualifying owner and continued program eligibility; a buyer cannot assume the seller’s capped or frozen bill continues. A separately verified property abatement often remains with the property for its remaining term, but program-specific new-owner filing, use, and tax-compliance conditions still must be confirmed—not inferred from the reduced assessment alone.
Next: Have Revenue or OPA identify every current benefit, model the buyer’s bill without seller-specific relief, and confirm any verified abatement in writing.
Official guidance ↗Separate water-lien guidance ↗Seller disclosure and independent inspections
For a covered Pennsylvania residential transfer, obtain the statutory seller disclosure. It reports the seller’s knowledge; it is not a warranty, title search, code review, or substitute for inspections. Because OPA dates this building before 1978, separately obtain the required federal/City lead disclosures and any test results.
Next: Have the agreement and disclosure reviewed for this transaction’s coverage and exceptions.
Official guidance ↗Informational only—not a legal opinion, title report, code inspection, tax payoff, or substitute for a Pennsylvania lawyer, title company, inspector, or tax professional.
Records to verify together
Rule-based groupings across this property's dated public records. Each flag shows the records that belong in the same verification step and where the inference stops.
Records to verify together
More than one separately dated public record deserves a current-status check.
Evidence: 1 open L&I violation · failed L&I inspection activity in 2023, 2025
Limit: A screening signal, not a foreclosure prediction. Tax entries are historical and must be verified with Philadelphia Revenue.
Transparent record rules, not a score or forecast. Each flag is a prompt to verify the cited records, not a prediction or allegation.
What to do with this
The record, translated into moves — what a buyer, the owner, and a landlord would each want to check next under Philadelphia's actual rules.
If you’re buying
Built 1945: lead rules apply
Federal law requires a lead-paint disclosure at sale for any pre-1978 home. If it will be rented, Philadelphia also requires a lead-safe or lead-free certificate before a rental license can issue.
Zoned RSA5: one household by right
Single-family rowhouse (the classic Philly row). Converting to a duplex or apartments needs a use variance the zoning board rarely grants — Pennsylvania courts require a physical hardship of the lot itself, and economics alone do not qualify.
The last transfer used nominal consideration
The latest deed records $100 or less. That is not a usable market-sale price and can reflect a family, estate, gift, correction, or entity transfer. Inspect the deed and order a title search rather than inferring the relationship or chain.
If you own it
1 open violation: the clock matters
Most L&I appeals must be filed within 30 days; unsafe or imminently dangerous orders can carry a shorter deadline. Unresolved notices can lead to fees, court enforcement, City abatement work, and liens. Read the dated notice and verify its current status with L&I.
If you’re the landlord
If it is rented, verify the Rental License
The fetched license records do not show an active Rental License. Ownership type or a tax mailing address does not prove that tenants occupy the property; if it is rented, verify the current license and legal occupancy in eCLIPSE.
Derived from the fetched property records and linked City guidance as of 2026. Assessment treatment is not a substitute for an exemption approval, live balance, title report, license, occupancy certificate, or inspection. Informational only — not legal, tax, or investment advice.
The investment read
How this house has moved and where it's pointed: the city's assessed value (not a listing price) over 12 years, charted against its block; appreciation is that history's pace, and the 5-year figure simply extends it. Yield estimates rent-vs-price from area rents. Ask the record to dig into any number.
Assessed value
$294,700
2026 billed-year assessment · 2027: $280,900 · built 1945
Price / sq ft
$219
block $208 · above block
Appreciation
+118%
+8%/yr, city 6.5%
In 5 years (~2031)
~$282K
+8%/yr own pace held 5 yrs — extrapolation, not a forecast
Est. tax bill / yr
$4,125
1.47% effective
Jun 2022 tax snapshot
No match
not proof the account is current
Gross yield
-2847988.6%
≈$-667M/mo rent
Times sold
0
Value vs. the block, over time — sales, permits & L&I events marked on the line
This houseBlock median & rangeL&I violationPermit
The paper trail
HistoryInspection failed ×3 (2006); 2 L&I violations (2011); L&I: 1 failed, 1 passed (2011); 2 L&I violations (2023); L&I: 2 failed, 1 passed (2023); L&I violation (2025); Inspection failed ×2 (2025).
- 2006 Inspection failed ×3L&I visit
- 2011 2 L&I violationsL&IL&I: 1 failed, 1 passedL&I visit
- 2023 2 L&I violationsL&IL&I: 2 failed, 1 passedL&I visit
- 2025 L&I violationL&IInspection failed ×2L&I visit
Flags: 1 open L&I violation. Informational only — not investment advice or a consumer report (FCRA).
The property, on paper
The city assessor's field record — the physical spec sheet behind the assessed number.
Bedrooms
3
Bathrooms
1
Stories
2
Interior
1,280 sqft
livable area
Lot
2,685 sqft
Basement
Partial, semi-finished
city code F
Garage
1 space
Exterior condition
Average
city code 4
Above averageBelow average
Interior condition
Average
city code 4
Above averageBelow average
Quality grade
C+
assessor's grade
ABCDE
Zoning
RSA5
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Run the numbers
What owning 3327 Knorr St takes, at your price and your rate. Taxes start with an annual estimate from the City’s taxable assessment, not a current bill or balance; rent starts at the area median. Assessed value is not an asking price — set the price slider to the real one.
Mortgage
—
P&I · 30-yr fixed
All-in monthly
—
+ taxes & insurance
Cash to close
—
down + ~4% costs
Cash flow
—
rent − all costs · /mo
Cap rate
—
NOI ÷ price
Cash-on-cash
—
year-1 return on cash in
Estimates for orientation, not advice. Assumes a 30-year fixed loan, $1,400/yr insurance, 1% of price/yr maintenance; taxes use this parcel's taxable assessment, not a live Tax Center balance.
Block context
3327 Knorr St sits on the 3300 block of Knorr St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 3325 Knorr St · 3323 Knorr St
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 10, 2026, 2:08 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)