100 E MERMAID LN
OFF BLD N/PKG N/COM MASON · Philadelphia · 19118
At a glance
100 E MERMAID LN in Philadelphia, PA is listed on the Philadelphia property roll as “OFF BLD N/PKG N/COM MASON”, OPA account 775237000. The roll records 3,809 sq ft of building area, a 1890 build year and an assessed value of $481,300. It last sold for $4,000,000 in May 2019.
Recorded transfers — county roll + state sale file
Sale history
| Recorded | Price | Qualification | Source | Instrument |
|---|---|---|---|---|
| May 2019 | $4,000,000 | 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 — 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 | 775237000 |
| Site address | 100 E MERMAID LN |
| Land use (DOR) | DD0 — OFF BLD N/PKG N/COM MASON |
| Building area (actual) | 3,809 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | — |
| Year built | 1890 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $481,300 |
Recorded owner (assessment roll)
MERMAID EAST ASSOCIATES L
Owner mailing address: 100 E MERMAID LN, PHILADELPHIA, PA, 19118
Location
- Address
- 100 E MERMAID LN
- City
- Philadelphia
- ZIP
- 19118
- Coordinates
- 40.06938, -75.19530
Within ~650 m
Nearby office buildings
- 7673 WINSTON RD1 tenants
6,660 sq ft · 3 fl · 1890
- 8031 GERMANTOWN AVE0 tenants
4,950 sq ft · 2 fl
- 7811 GERMANTOWN AVE0 tenants
4,320 sq ft · 3 fl · 1970
- 7601 GERMANTOWN AVE0 tenants
4,070 sq ft · 1 fl · 1950
How does 100 E MERMAID LN compare with other Philadelphia office buildings?
At 3,809 sq ft, 100 E MERMAID LN is less than a fifth 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 $126 per square foot of building area, against $163 across all office floor area on the roll.
The last recorded sale priced it at $1050 per square foot.
What has happened at 100 E MERMAID LN recently?
1 recorded transfer is on file for this parcel, the latest dated May 2019.
What does “OFF BLD N/PKG N/COM MASON” mean for this parcel?
The Philadelphia roll classifies OPA account 775237000 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 100 E MERMAID LN?
The recorded owner on the Philadelphia assessment roll (current) is MERMAID EAST ASSOCIATES L. Owner mailing address on file: 100 E MERMAID LN, PHILADELPHIA, PA, 19118.
What companies have offices at 100 E MERMAID LN?
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 100 E MERMAID LN?
The Philadelphia roll records 3,809 sq ft of building area, a build year of 1890.
What is the assessed value of 100 E MERMAID LN?
$481,300 on the Philadelphia roll. Assessed values are taxable-roll figures, not market prices.
When did 100 E MERMAID LN last sell?
The last recorded transfer was in May 2019 for $4,000,000 ($1050 per square foot).
What is the OPA account for 100 E MERMAID LN?
OPA account 775237000, site address 100 E MERMAID LN, Philadelphia. It is the key to look the parcel up in the Office of Property Assessment nightly roll (Philadelphia).
More around 100 E MERMAID LN
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 775237000.
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, “100 E MERMAID LN, Philadelphia, PA (OPA account 775237000)”, https://buildingcensus.com/offices/philly/office-building-c4d800f3 (data as of October 10, 2026).