Who owns your block

400 block of Knorr St

A mostly owner-occupied block: 88% of homes are lived in by their owners, with 1 open code violation.

Owner-occupied
Investor / LLC
Absentee
Vacant
Has violations

Every parcel on the block, colored by who owns it. Tap a parcel for the owner and its city record.

By the Numbers

Median value

$263K

$251K–$326K

Recent sale

$243K

2 sold in 2yr

assessed $263K

Median built

1940

year built

city 1925

Owner-occupied

88%

22 of 25

Open violations

L&I code

▼ block 4% · city 5%

Back taxes

all current

▼ block 0% · city 9%

Schools

The public schools this block is zoned for — its official School District of Philadelphia catchments.

Elementary · K-5

J Hampton Moore

6900 Summerdale Ave · 1162 students

Middle · 6-8

Castor Gardens

1800 Cottman Ave · 1340 students

High · 9-12

Northeast High

1601 Cottman Ave · 185 students

Catchment assignments from the School District of Philadelphia via City of Philadelphia open data. Confirm with the District before enrollment decisions.

Who owns it

Ownership of 25 parcels

Owner-occupied 22
Investor / LLC 2
Absentee individual 1

Value distribution today

$251K$291K+

Owner	On block	Owns citywide	Portfolio value	Source
Ermore Corp	1	1	$251K	phila.gov ↗
Resnick Yaffa Real Estate Co Llc	1	1	$255K	phila.gov ↗

House by house

All 25 homes on the block — value and 12-year trajectory, ownership, and the paper trail on the ones that were bought, built, torn down, or flipped. Sorted up the street; each links to its full city record — or download the roster (CSV).

Address	Ownership	Value & trend	Sq ft	Built	Flags
400 KNORR ST	Investor / LLC	$251K	—	1940	1 viol
411 KNORR ST	Owner-occupied	$267K	—	1940
412 KNORR ST	Owner-occupied	$264K	—	1940
413 KNORR ST	Owner-occupied	$263K	—	1940
414 KNORR ST	Owner-occupied	$256K	—	1940
415 KNORR ST	Owner-occupied	$263K	—	1940
416 KNORR ST	Investor / LLC	$255K	—	1940
417 KNORR ST	Owner-occupied	$263K	—	1940
418 KNORR ST	Owner-occupied	$256K	—	1940
419 KNORR ST	Owner-occupied	$278K	—	1940
420 KNORR ST	Owner-occupied	$256K	—	1940
421 KNORR ST	Owner-occupied	$267K	—	1940
422 KNORR ST	Owner-occupied	$256K	—	1940
423 KNORR ST	Owner-occupied	$326K	—	1940
424 KNORR ST	Owner-occupied	$256K	—	1940
425 KNORR ST	Owner-occupied	$263K	—	1940
426 KNORR ST	Absentee individual	$256K	—	1940
427 KNORR ST	Owner-occupied	$263K	—	1940
428 KNORR ST	Owner-occupied	$256K	—	1940
429 KNORR ST	Owner-occupied	$267K	—	1940
430 KNORR ST	Owner-occupied	$300K	—	1940
431 KNORR ST	Owner-occupied	$267K	—	1940
432 KNORR ST	Owner-occupied	$259K	—	1940
433-35 KNORR ST	Owner-occupied	$291K	—	1940
434 KNORR ST	Owner-occupied	$261K	—	1940

Neighborhood

Neighborhood income and demographics are coming soon.

I research this block across Philadelphia's live records — assessments, deeds, permits, violations, taxes, licenses, zoning appeals, schools, crime, and 311. Tap a question below to try me free; your own questions come with membership (free to start).

About this data & fine print

Answers are generated by an AI agent querying City of Philadelphia open data at the moment you ask: OPA property assessments, Recorder of Deeds transfer records, L&I permits, violations & licenses, Dept. of Revenue tax balances, Zoning Board appeals, Police incident reports, Philly311 requests, and School District of Philadelphia catchment and school data.

City data is published as-is and can lag, contain errors, or be corrected later; school performance datasets run years behind and are labeled with their school year. AI answers can contain mistakes — verify anything that matters against the official record (property.phila.gov, atlas.phila.gov) before acting on it.

Informational only. Not legal, financial, or investment advice. Not a consumer report under the FCRA — it may not be used to decide anyone's eligibility for housing, tenancy, employment, credit, or insurance.

Generated 2026-07-07 from public City of Philadelphia records · Download this block's data (CSV)