6 ST JAMES AV
Office · Boston · 02116
At a glance
6 ST JAMES AV in Boston, MA is listed on the Boston property roll as “Office”, parcel ID 0501151000. The roll records 283,657 sq ft of building area, 10 floors, a 1913 build year and an assessed value of $111,222,700. It last sold for $673,000,000 in Jan 2017 on a deed covering 2 parcels.
Recorded transfers — county roll + state sale file
Sale history
The most recent transfer covered 2 parcels. The price shown is the whole transaction, not this parcel alone, so any per-square-foot figure is measured across everything the deed conveyed. The county record carries no multi-parcel flag for it; the parcels were identified by their identical price, date and ZIP.
| Recorded | Price | Qualification | Source | Instrument |
|---|---|---|---|---|
| Jan 2017 | $673,000,000 | not rated | County roll | — |
Prices are the consideration recorded in Boston'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.
Boston assessment roll
Parcel record
| Field | Value |
|---|---|
| parcel ID | 0501151000 |
| Site address | 6 ST JAMES AV |
| Land use (DOR) | 346 — Office |
| Building area (actual) | 283,657 sq ft |
| Floors / units / buildings | 10 / — / — |
| Lot size | 1 sq ft |
| Year built | 1913 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $111,222,700 |
Recorded owner (assessment roll)
MT BACK BAY ONE LLC
Owner mailing address: 10 ST JAMES AVE 10TH FLR, BOSTON, MA, 02116
2 Boston 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
- 6 ST JAMES AV
- City
- Boston
- ZIP
- 02116
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 6 ST JAMES AV compare with other Boston office buildings?
At 283,657 sq ft, 6 ST JAMES AV is about 4 times the size of the average office building on the Boston roll, which comes to 67,328 sq ft across 1,046 buildings.
With 10 floors it is one of 125 office buildings of ten or more floors in the metro.
Its assessed value works out to $392 per square foot of building area, against $469 across all office floor area on the roll.
The last recorded sale priced it at $753 per square foot across the parcels conveyed.
Does the owner of 6 ST JAMES AV hold other Boston office property?
2 Boston office properties (2 parcels, 894.3K 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 has happened at 6 ST JAMES AV recently?
1 recorded transfer is on file for this parcel, the latest dated Jan 2017.
What does “Office” mean for this parcel?
The Boston roll classifies parcel ID 0501151000 as “Office” (use code 346). 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 6 ST JAMES AV?
The recorded owner on the Boston assessment roll (current) is MT BACK BAY ONE LLC. Owner mailing address on file: 10 ST JAMES AVE 10TH FLR, BOSTON, MA, 02116.
How big is 6 ST JAMES AV?
The Boston roll records 283,657 sq ft of building area, 10 floors, a build year of 1913. It sits on a 1 sq ft lot.
What is the assessed value of 6 ST JAMES AV?
$111,222,700 on the Boston roll. Assessed values are taxable-roll figures, not market prices.
When did 6 ST JAMES AV last sell?
The last recorded transfer was in Jan 2017 for $673,000,000, on one deed conveying 2 parcels ($753 per square foot).
What is the parcel ID for 6 ST JAMES AV?
Parcel ID 0501151000, site address 6 ST JAMES AV, Boston. It is the key to look the parcel up in the MassGIS L3 standardized parcels with the city assessment roll (Boston).
More around 6 ST JAMES AV
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.
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Dataset updated . Source: Boston assessment roll, parcel ID 0501151000.
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, “6 ST JAMES AV, Boston, MA (parcel ID 0501151000)”, https://buildingcensus.com/offices/boston/office-building-ed4ba86e (data as of September 20, 2026).