1635 N SYDENHAM ST
OFF BLD N/PKG N/COM MASON · Philadelphia · 19121
At a glance
1635 N SYDENHAM ST in Philadelphia, PA is listed on the Philadelphia property roll as “OFF BLD N/PKG N/COM MASON”, OPA account 883361740. The roll records 1,645 sq ft of building area, 1 floors, a 2012 build year and an assessed value of $180,900.
Public record — 0 matched business locations
Tenants & business locations
No active business locations at this address appear in the public records ingested so far. That is a statement about the records, not the building: tenants without a county business-tax receipt or a Florida registration at this address are invisible to public data.
Philadelphia assessment roll
Parcel record
| Field | Value |
|---|---|
| OPA account | 883361740 |
| Site address | 1635 N SYDENHAM ST |
| Land use (DOR) | DD0 — OFF BLD N/PKG N/COM MASON |
| Building area (actual) | 1,645 sq ft |
| Floors / units / buildings | 1 / — / — |
| Lot size | — |
| Year built | 2012 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $180,900 |
Recorded owner (assessment roll)
BEECH ECONOMIC
DEVELOPMENT CORP
Owner mailing address: 1510 CECIL B MOORE AVE, PHILADELPHIA, PA, 19121
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
- 1635 N SYDENHAM ST
- City
- Philadelphia
- ZIP
- 19121
- Coordinates
- 39.97874, -75.16016
Within ~650 m
Nearby office buildings
- 1401-49 N BROAD ST0 tenants
66,674 sq ft · 1977
- 1231-39 N BROAD ST1 tenants
40,640 sq ft · 1922
- 1500-10 N BROAD ST1 tenants
31,020 sq ft · 1920
- 1722-42 CECIL B MOORE AVE1 tenants
25,023 sq ft · 1966
- 1500-18 CECIL B MOORE AVE1 tenants
18,252 sq ft · 3 fl
- 1250-52 N BROAD ST0 tenants
6,794 sq ft · 1 fl · 1940
How does 1635 N SYDENHAM ST compare with other Philadelphia office buildings?
At 1,645 sq ft, 1635 N SYDENHAM ST 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 $110 per square foot of building area, against $163 across all office floor area on the roll.
Does the owner of 1635 N SYDENHAM ST hold other Philadelphia office property?
4 Philadelphia office properties (4 parcels, 6.7K sq ft) are recorded to an owner sharing this parcel's tax-bill mailing address. A shared mailing address is evidence of common ownership, not proof of it.
What does “OFF BLD N/PKG N/COM MASON” mean for this parcel?
The Philadelphia roll classifies OPA account 883361740 as “OFF BLD N/PKG N/COM MASON” (use code DD0). 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 1635 N SYDENHAM ST?
The recorded owner on the Philadelphia assessment roll (current) is BEECH ECONOMIC, DEVELOPMENT CORP. Owner mailing address on file: 1510 CECIL B MOORE AVE, PHILADELPHIA, PA, 19121.
What companies have offices at 1635 N SYDENHAM ST?
No business locations at this building appear in the public records ingested so far — no licence, tax or registry record currently lists this address; that is a gap in the record, not proof the building is empty.
How big is 1635 N SYDENHAM ST?
The Philadelphia roll records 1,645 sq ft of building area, 1 floors, a build year of 2012.
What is the assessed value of 1635 N SYDENHAM ST?
$180,900 on the Philadelphia roll. Assessed values are taxable-roll figures, not market prices.
What is the OPA account for 1635 N SYDENHAM ST?
OPA account 883361740, site address 1635 N SYDENHAM ST, Philadelphia. It is the key to look the parcel up in the Office of Property Assessment nightly roll (Philadelphia).
More around 1635 N SYDENHAM 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 883361740.
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, “1635 N SYDENHAM ST, Philadelphia, PA (OPA account 883361740)”, https://buildingcensus.com/offices/philly/office-building-14b061c9 (data as of October 10, 2026).