Block Report

400 Block of W Mount Airy Ave

33 properties on this block in Philadelphia.

View property grades, violation history, tax delinquencies, ownership transfers, title risk scores, and safety data for all 33 properties on the 400 Block of W Mount Airy Ave.

About this block

The 400 block of W Mount Airy Ave contains 33 properties tracked on KnowMyBlock, with an average grade of A. Construction dates range from 1925 to 1925. There are 1 open code violations across the block. The block has seen 66 ownership transfers in the last five years. 33 properties on the block were built before 1978 and may carry lead-paint risk under Philadelphia's lead disclosure ordinance. The top three property owners on this block control approximately 9% of its parcels.

All properties on this block (33)

Address	Year	Owner-occ	Grade
400 W Mount Airy Ave	1925	Yes	A
401 W Mount Airy Ave	1925	Yes	A
402 W Mount Airy Ave	1925	Yes	A
403 W Mount Airy Ave	1925	Yes	A
404 W Mount Airy Ave	1925	Yes	A
405 W Mount Airy Ave	1925	Yes	A
406 W Mount Airy Ave	1925	Yes	A
407 W Mount Airy Ave	1925	Yes	A
408 W Mount Airy Ave	1925	Yes	A
409 W Mount Airy Ave	1925	Yes	B

Show all 33 properties

Address	Year	Open viol	Owner-occ	Grade
410 W Mount Airy Ave	1925	0	Yes	A
411 W Mount Airy Ave	1925	0	Yes	A
412 W Mount Airy Ave	1925	0	Yes	A
413 W Mount Airy Ave	1925	0	Yes	A
414 W Mount Airy Ave	1925	0	Yes	A
416 W Mount Airy Ave	1925	0	Yes	A
418 W Mount Airy Ave	1925	0	Yes	A
420 W Mount Airy Ave	1925	0	Yes	A
422 W Mount Airy Ave	1925	0	Yes	A
424 W Mount Airy Ave	1925	0	Yes	A
426 W Mount Airy Ave	1925	0	Yes	A
428 W Mount Airy Ave	1925	0	Yes	A
430 W Mount Airy Ave	1925	0	Yes	A
432 W Mount Airy Ave	1925	0	Yes	A
434 W Mount Airy Ave	1925	0	Yes	B
436 W Mount Airy Ave	1925	0	Yes	A
438 W Mount Airy Ave	1925	0	Yes	A
440 W Mount Airy Ave	1925	0	Yes	A
442 W Mount Airy Ave	1925	0	Yes	A
444 W Mount Airy Ave	1925	0	Yes	A
446 W Mount Airy Ave	1925	0	Yes	A
448 W Mount Airy Ave	1925	0	Yes	A
450 W Mount Airy Ave	1925	1	Yes	B

Recent block activity

2026-06-21Tax delinquency recorded · 434 W Mount Airy Ave
2026-03-30Transferred · 402 W Mount Airy Ave
2026-03-20Transferred · 402 W Mount Airy Ave
2026-03-19Transferred · 446 W Mount Airy Ave
2026-01-20Transferred · 422 W Mount Airy Ave
2025-12-08Complaint filed · 444 W Mount Airy Ave — Work Underway In Violation Of Permit Requirements
2025-11-12Complaint filed · 409 W Mount Airy Ave — Unlicensed Rentals
2025-11-12Complaint filed · 409 W Mount Airy Ave — Property Maintenance Complaint Interior
2025-11-12Complaint filed · 409 W Mount Airy Ave — Fire Safety Complaint
2025-10-20Inspection · 450 W Mount Airy Ave
2025-09-12Violation opened · 450 W Mount Airy Ave — A-301.1/10
2025-09-12Inspection · 450 W Mount Airy Ave

Block health comparison

Scope	Avg grade	Open viol/property
Block	A	0.03
Street	A	0.01
ZIP 19119	A	0.12
Citywide	—	—