EAJ 1309 5TH STREET LLC
5 office properties in Boston recorded to 3 owner entities mailing to PO BOX 528, COLUMBIA, SC. likely one owner
At a glance
EAJ 1309 5TH STREET LLC is recorded as the owner of 5 office properties (5 parcels) in Boston, totalling 19K sq ft of building area with $13.1M of assessed value. The holdings sit in 3 owner entities that share one tax-bill mailing address in COLUMBIA, SC — and a name root, which is how a single sponsor usually holds property.
County assessment roll
Properties
| Building | Submarket | Sq ft | Assessed | Last sold | Tenants |
|---|---|---|---|---|---|
| 401 NEW YORK AVE NE | Washington | 16K | $2.1M | — | 1 |
| 740 MASSACHUSETTS AV | Boston | 3K | $1.6M | — | 0 |
| 5TH ST NE | Washington | — | $7.3M | — | 0 |
| 5TH ST NE | Washington | — | $1M | — | 0 |
| 5TH ST NE | Washington | — | $1M | — | 0 |
Names on the deeds
Owner entities at this address
- EAJ 401 NEW YORK AVE LLC
- SOUTH BAY (E&A) LLC
- EAJ 1309 5TH STREET LLC
How this group was built. These entities share both a mailing address and a name root, which is how a single sponsor usually holds property — one entity per building.The county records an owner and a mailing address for every parcel; this page collects the office parcels whose owners mail to the same address, and counts buildings rather than parcels using the county's own condo-to-building link. Lease terms, rents and the identity of a manager acting for the owner are not public records and are not shown.
Where are EAJ 1309 5TH STREET LLC's office buildings?
The 5 properties are spread across 2 cities, led by Washington (4), Boston (1).
The largest is 401 NEW YORK AVE NE in Washington at 16K sq ft.
Recorded build years run from 1964 to 2020.
How large is this portfolio within Boston's office market?
Its 19K sq ft is 0.03% of the 70.4M sq ft of office building area on the Boston roll.
Its $13.1M of assessed value is 0.04% of the metro's office total.
It holds 5 of the metro's 1,046 office buildings.
Frequently asked questions
How many office buildings does EAJ 1309 5TH STREET LLC own in Boston?
5 office properties (5 parcels) on the Boston roll, counted by building rather than by condo parcel.
What is EAJ 1309 5TH STREET LLC's largest office building?
401 NEW YORK AVE NE, Washington — 16K sq ft, assessed at $2.1M.
What are EAJ 1309 5TH STREET LLC's office properties worth?
Their combined assessed value on the current Boston roll is $13,088,430. Assessed values are taxable-roll figures, not market prices.
Are these properties owned by one company?
These entities share both a mailing address and a name root, which is how a single sponsor usually holds property — one entity per building. 3 owner entities share the mailing address. It is evidence of common ownership, not proof of it.
Related
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Boston — MassGIS L3 standardized parcels with the city assessment roll (owner names, mailing addresses, stories, assessed values, last recorded sale). Boston publishes no universal business roll, so no tenant layer is possible from public records here.
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.
Dataset updated . Derived from public data sources.
About this data
Source: MassGIS L3 standardized parcels with the city assessment roll (Boston), as published September 20, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “EAJ 1309 5TH STREET LLC — Boston office property holdings”, https://buildingcensus.com/offices/boston/owners/eaj-1309-5th-street-llc-a709d3 (data as of September 20, 2026).