6421-23 CASTOR AVE
STR/OFF 1 STY MASONRY · Philadelphia · 19149
At a glance
6421-23 CASTOR AVE in Philadelphia, PA is listed on the Philadelphia property roll as “STR/OFF 1 STY MASONRY”, OPA account 882833600. The roll records 3,204 sq ft of building area, 1 floors, a 1954 build year and an assessed value of $613,100. It last sold for $320,000 in Sep 2015. 1 active business locations at this address appear in public records.
Recorded transfers — county roll + state sale file
Sale history
| Recorded | Price | Qualification | Source | Instrument |
|---|---|---|---|---|
| Sep 2015 | $320,000 | not rated | County roll | — |
Prices are the consideration recorded in Philadelphia's public property records. Where a qualification code exists it is the assessor's judgement of whether a transfer was arm's length; transfers without one appear unrated rather than assumed clean. Whether a building is on the market today, and at what price, is not a public record and is not shown here — asking prices, listings and lease terms live in private commercial databases.
Public record — 1 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| Wecook & Fresh Inc | — | Oct 2017 | Philadelphia L&I licence | folio match · high |
Philadelphia assessment roll
Parcel record
| Field | Value |
|---|---|
| OPA account | 882833600 |
| Site address | 6421-23 CASTOR AVE |
| Land use (DOR) | BA0 — STR/OFF 1 STY MASONRY |
| Building area (actual) | 3,204 sq ft |
| Floors / units / buildings | 1 / — / — |
| Lot size | — |
| Year built | 1954 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $613,100 |
Recorded owner (assessment roll)
YHK PROPERTIES LLC
Owner mailing address: 2343 N 52ND ST, PHILADELPHIA, PA, 19131
Location
- Address
- 6421-23 CASTOR AVE
- City
- Philadelphia
- ZIP
- 19149
- Coordinates
- 40.03980, -75.07662
Within ~650 m
Nearby office buildings
- 6044-52 CASTOR AVE0 tenants
20,100 sq ft · 2 fl · 1925
- 6401-07 CASTOR AVE1 tenants
12,040 sq ft · 2 fl · 1940
- 6601-19 CASTOR AVE3 tenants
9,702 sq ft · 1 fl · 1946
- 6816 CASTOR AVE0 tenants
7,500 sq ft · 1 fl · 1955
- 6434 CASTOR AVE1 tenants
5,959 sq ft · 1 fl · 1954
- 6834-36 CASTOR AVE0 tenants
4,300 sq ft · 1 fl · 1961
How does 6421-23 CASTOR AVE compare with other Philadelphia office buildings?
At 3,204 sq ft, 6421-23 CASTOR AVE is less than a tenth the size of the average office building on the Philadelphia roll, which comes to 36,284 sq ft across 2,470 buildings.
Its assessed value works out to $191 per square foot of building area, against $163 across all office floor area on the roll.
The last recorded sale priced it at $100 per square foot.
What has happened at 6421-23 CASTOR AVE recently?
1 recorded transfer is on file for this parcel, the latest dated Sep 2015.
What does “STR/OFF 1 STY MASONRY” mean for this parcel?
The Philadelphia roll classifies OPA account 882833600 as “STR/OFF 1 STY MASONRY” (use code BA0). BuildingCensus includes a parcel in its office census when the roll gives it an office-class use, so the label is the county's, not an inference.
Frequently asked questions
Who owns 6421-23 CASTOR AVE?
The recorded owner on the Philadelphia assessment roll (current) is YHK PROPERTIES LLC. Owner mailing address on file: 2343 N 52ND ST, PHILADELPHIA, PA, 19131.
What companies have offices at 6421-23 CASTOR AVE?
1 active business locations at this building appear in Philadelphia public records, including Wecook & Fresh Inc. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 6421-23 CASTOR AVE?
The Philadelphia roll records 3,204 sq ft of building area, 1 floors, a build year of 1954.
What is the assessed value of 6421-23 CASTOR AVE?
$613,100 on the Philadelphia roll. Assessed values are taxable-roll figures, not market prices.
When did 6421-23 CASTOR AVE last sell?
The last recorded transfer was in Sep 2015 for $320,000 ($100 per square foot).
What is the OPA account for 6421-23 CASTOR AVE?
OPA account 882833600, site address 6421-23 CASTOR AVE, Philadelphia. It is the key to look the parcel up in the Office of Property Assessment nightly roll (Philadelphia).
More around 6421-23 CASTOR AVE
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Philadelphia — Office of Property Assessment nightly roll (owner and mailing address on every parcel), Department of Records deed transfers with consideration and counterparties, and L&I business licences joined by OPA account. The universal Commercial Activity licence roll publishes no premises addresses, so occupancy shows regulated activities only.
Every fact on this page is drawn from the government records above — no listing sites, no scraped platforms, no third-party images. Facts from public records are uncopyrightable; each tenancy row carries its source and match confidence. Records can lag reality — a business-tax receipt or registration at an address is evidence of occupancy, not a lease confirmation.
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Dataset updated . Source: Philadelphia assessment roll, OPA account 882833600.
About this data
Source: Office of Property Assessment nightly roll (Philadelphia), as published October 10, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “6421-23 CASTOR AVE, Philadelphia, PA (OPA account 882833600)”, https://buildingcensus.com/offices/philly/office-building-76e699c9 (data as of October 10, 2026).