17 BLACKFAN ST, Boston MA

Parcel · HOSPITAL (exempt) · Parcel of record· Boston, MA, Suffolk County

Source: City of Boston Assessing Department

No date on record · this record's last observation

Relationships: 1
Dated events: 12

No date on record · this record's last observation

Data as of an unrecorded date (this record's last observation) from county and municipal records. Page built Sep 25, 2026, 12:06 PM UTC and rebuilt at most every 15 minutes.

Right now

one signal names this record (all real estate signals)

#1NewFactReal estateReal Estate Development / buildings entering service

17-25 Blackfan ST: an occupancy certificate was issued 2026-08-03, declared valuation $18,500,000.

Dated 2026-08-03 (source_record); first seen by DFX 2026-08-30.

Exposure: $18.5M knowndisclosed amount
Who this matters to: CRE lenders
Historical: not a measured predictor

Real Estate Development / buildings entering serviceAug 3, 2026 · seen 25 days ago

Across DFX

This entity has not been resolved onto another DFX graph by a shared identifier. A name match elsewhere would be a candidate, never an identity, and none is recorded.

Facts

fact = as filed or announced; derived = computed by DFX; estimate = a band, never a point

Parcel number: 0401894000
Address: 17 BLACKFAN ST
Municipality: Boston
County: Suffolk
State: MA
Land use: HOSPITAL (exempt)
Assessed total: $334M
Assessed land: $50.9M
Assessed building: $283M
Assessment year: 2026

Relationships

Owns (1)

← CHILDRENS HOSPITAL MED CNTROrganization
observedCounty and municipal records

Dated events

Order

Occurred
3 Aug 2026
Certificate of occupancy
17-25 Blackfan ST: an occupancy certificate was issued 2026-08-03, declared valuation $18,500,000.
County and municipal records
$18.5M
Occurred
10 Jul 2026
Permit issued
17-25 Blackfan ST: a renovation permit was issued 2026-07-10, declared valuation $809,500.
County and municipal records
$810K
Occurred
24 Mar 2026
Permit issued
17-25 Blackfan ST: a renovation permit was issued 2026-03-24, declared valuation $3,097,620.
County and municipal records
$3.1M
Occurred
12 Dec 2025
Permit issued
17-25 Blackfan ST: a renovation permit was issued 2025-12-12, declared valuation $1,718,688.
County and municipal records
$1.7M
Occurred
30 Oct 2025
Certificate of occupancy
17-25 Blackfan ST: an occupancy certificate was issued 2025-10-30, declared valuation $24,532,033.
County and municipal records
$24.5M

Provenance

Graph: Real Estate
Canonical id
First observed: n/a
Last observed: n/a : not yet measured
Source families: County and municipal records
1 registered feed stand behind this record; each fact above carries its own dates and, where the publisher serves one, its document.
Resolution: Identity across graphs by shared identifier (CRD, CIK, EIN, ADV fund id, individual CRD) or citation; a name match is shown as a candidate and never merged.