1401 WALNUT ST
COM CONDO 2 STY MASONRY · Philadelphia · 19102
At a glance
1401 WALNUT ST in Philadelphia, PA is listed on the Philadelphia property roll as “COM CONDO 2 STY MASONRY”, OPA account 883336610. The roll records 16,559 sq ft of building area, 8 floors, a 1900 build year and an assessed value of $2,401,000. 1 active business locations at this address appear in public records.
The building's own benchmarking filing
Energy performance
From the building's own filing under its city's benchmarking ordinance. An ENERGY STAR score of 75 or above means the building outperforms three quarters of comparable buildings nationally. It is a self-reported figure, verified by the city only to the extent the ordinance requires.
Public record — 1 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| 14 WA PARTNERS LP | # A | Jul 2015 | Philadelphia L&I licence | folio match · high |
Philadelphia assessment roll
Parcel record
| Field | Value |
|---|---|
| OPA account | 883336610 |
| Site address | 1401 WALNUT ST |
| Land use (DOR) | 6B0 — COM CONDO 2 STY MASONRY |
| Building area (actual) | 16,559 sq ft |
| Floors / units / buildings | 8 / — / — |
| Lot size | — |
| Year built | 1900 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $2,401,000 |
Recorded owner (assessment roll)
14 WA PARTNERS LP
Owner mailing address: 110 S 19TH ST, PHILADELPHIA, PA, 19103
The owner is on site.A business-tax receipt at this address is held in the owner's own name, so the public record shows an owner-occupier rather than a landlord letting the space.
4 Philadelphia office properties share this owner mailing address →
Commercial property is usually held one building per entity; a shared mailbox is how the roll reveals a portfolio. It is evidence of common ownership, not proof.
Location
- Address
- 1401 WALNUT ST
- City
- Philadelphia
- ZIP
- 19102
- Coordinates
- 39.94960, -75.16459
Within ~650 m
Nearby office buildings
- 1500-42 MARKET ST7 tenants
2,215,276 sq ft · 43 fl · 1974
- One Liberty Place4 tenants
1,464,000 sq ft · 61 fl · 1986
- BNY Mellon Center6 tenants
1,449,928 sq ft · 54 fl · 1990
- Comcast Center12 tenants
1,200,021 sq ft · 58 fl · 2007
- 1700-40 MARKET ST7 tenants
1,183,616 sq ft · 32 fl · 1969
- Comcast Technology Center0 tenants
1,103,300 sq ft · 44 fl · 2016
How does 1401 WALNUT ST compare with other Philadelphia office buildings?
At 16,559 sq ft, 1401 WALNUT ST is about half 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 $145 per square foot of building area, against $163 across all office floor area on the roll.
Does the owner of 1401 WALNUT ST hold other Philadelphia office property?
14 WA PARTNERS LP also holds a business-tax receipt at this address, so the public record shows an owner-occupier rather than a landlord letting the space.
4 Philadelphia office properties (4 parcels, 45.1K sq ft) are recorded to 4 owner entities sharing this parcel's tax-bill mailing address. A shared mailing address is evidence of common ownership, not proof of it.
What has happened at 1401 WALNUT ST recently?
The building files energy-benchmarking disclosures — 1 report year are matched to this parcel.
What does “COM CONDO 2 STY MASONRY” mean for this parcel?
The Philadelphia roll classifies OPA account 883336610 as “COM CONDO 2 STY MASONRY” (use code 6B0). 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 1401 WALNUT ST?
The recorded owner on the Philadelphia assessment roll (current) is 14 WA PARTNERS LP. Owner mailing address on file: 110 S 19TH ST, PHILADELPHIA, PA, 19103.
What companies have offices at 1401 WALNUT ST?
1 active business locations at this building appear in Philadelphia public records, including 14 WA PARTNERS LP. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1401 WALNUT ST?
The Philadelphia roll records 16,559 sq ft of building area, 8 floors, a build year of 1900.
What is the assessed value of 1401 WALNUT ST?
$2,401,000 on the Philadelphia roll. Assessed values are taxable-roll figures, not market prices.
What is the OPA account for 1401 WALNUT ST?
OPA account 883336610, site address 1401 WALNUT ST, Philadelphia. It is the key to look the parcel up in the Office of Property Assessment nightly roll (Philadelphia).
More around 1401 WALNUT ST
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 883336610.
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, “1401 WALNUT ST, Philadelphia, PA (OPA account 883336610)”, https://buildingcensus.com/offices/philly/office-building-12e10070 (data as of October 10, 2026).