Who owns your block

400 block of W Mount Airy Ave

A mostly owner-occupied block: 100% of homes are lived in by their owners, with 1 open code violation and 1 home behind $10 on taxes.

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

$377K

$377K–$522K

Recent sale

$485K

3 sold in 2yr

assessed $377K

Median built

1925

year built

city 1925

Owner-occupied

100%

33 of 33

Open violations

L&I code

▼ block 3% · city 5%

Back taxes

$10

1 of 33 behind

▼ block 3% · city 9%

Schools

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

Elementary & Middle · K-8

Henry E Houston

7300 Rural Ln · 473 students

High · 9-12

Roxborough High School

6498 Ridge Ave · 529 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 33 parcels

Owner-occupied 33

Value distribution today

$377K$459K+

No multi-home or corporate owners on this block — every home has its own owner.

House by house

All 33 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 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
401 W MOUNT AIRY AVE	Owner-occupied	$426K	—	1925
402 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
403 W MOUNT AIRY AVE	Owner-occupied	$414K	—	1925
404 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
405 W MOUNT AIRY AVE	Owner-occupied	$489K	—	1925
406 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
407 W MOUNT AIRY AVE	Owner-occupied	$438K	—	1925
408 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
409 W MOUNT AIRY AVE	Owner-occupied	$457K	—	1925
410 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
411 W MOUNT AIRY AVE	Owner-occupied	$457K	—	1925
412 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
413 W MOUNT AIRY AVE	Owner-occupied	$522K	—	1925
414 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
416 W MOUNT AIRY AVE	Owner-occupied	$459K	—	1925
418 W MOUNT AIRY AVE	Owner-occupied	$439K	—	1925
420 W MOUNT AIRY AVE	Owner-occupied	$451K	—	1925
422 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
424 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
426 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
428 W MOUNT AIRY AVE	Owner-occupied	$459K	—	1925
430 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
432 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
434 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
436 W MOUNT AIRY AVE	Owner-occupied	$451K	—	1925
438 W MOUNT AIRY AVE	Owner-occupied	$421K	—	1925
440 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
442 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
444 W MOUNT AIRY AVE	Owner-occupied	$421K	—	1925
446 W MOUNT AIRY AVE	Owner-occupied	$459K	—	1925
448 W MOUNT AIRY AVE	Owner-occupied	$377K	—	1925
450 W MOUNT AIRY AVE	Owner-occupied	$418K	—	1925	1 viol

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 2026-07-08 from public City of Philadelphia records · Download this block's data (CSV)