{"id": "m-188df7b33c", "slug": "dorchester-bayside-mall", "type": "mall", "name": "Bayside Mall", "aka": [], "city": "Dorchester", "county": null, "state": "MA", "country": "US", "census_division": 1, "lat": null, "lon": null, "geocode_method": null, "address": null, "metro": null, "original_use": "mall", "year_opened": null, "year_closed": null, "acres": null, "gla_sqft": null, "stores_peak": null, "levels": null, "original_developer": null, "original_architect": null, "before_notes": "Wikipedia categories: Demolished shopping malls in the United States", "strategy": ["redevelop"], "new_use": ["mixed"], "share_retrofit": null, "status": "approved", "year_retrofit": 2020, "developer": "Accordia Partners", "architect": null, "after_notes": null, "narrative": "Bayside Expo Center was a convention center located in Dorchester, Massachusetts. Originally opened as a shopping mall called Bayside Mall in the 1960s, the mall later failed and the convention center opened in its place. In 2010, it was purchased by the University of Massachusetts Boston after the building went into foreclosure. After the building's roof collapsed from the weight of accumulated snowfall during the 2014–15 North American winter, the university demolished the facility in 2016. In 2019, the University of Massachusetts board of trustees leased the property to Accordia Partners. In 2020, Accordia Partners proposed redeveloping the property into a 21-building mixed-used biotechnology science park called \"Dorchester Bay City\". In 2023, the Boston Planning & Development Agency approved the Accordia Partners proposal.", "narrative_license": "CC BY-SA 4.0", "narrative_source": "https://en.wikipedia.org/wiki/Bayside_Expo_Center", "zoning_change": null, "public_subsidy": null, "entitlement_year": 2023, "planning_notes": null, "wikidata_qid": null, "wikipedia": "https://en.wikipedia.org/wiki/Bayside_Expo_Center", "osm_id": null, "verified": "draft", "verified_by": null, "last_verified": null, "last_updated": "2026-10-18", "created": "2026-10-18", "contributor_name": null, "contributor_org": null, "contributor_link": null, "international": 0, "county_fips": null, "opp_score": 0.0, "opp_reasons": ["already in play: under construction, approved, or sold to a developer with housing plans", "housing in the record"], "for_sale": 0, "distressed": 0, "url": "https://retrofitatlas.org/malls/ma/dorchester-bayside-mall/", "events": [{"year": 2010, "date": null, "kind": "note", "detail": "Purchased by University of Massachusetts Boston after foreclosure.", "source_id": 1579}, {"year": 2016, "date": null, "kind": "note", "detail": "Demolished by UMass Boston after roof collapse from heavy snowfall.", "source_id": 1580}, {"year": 2019, "date": null, "kind": "note", "detail": "Leased to Accordia Partners by UMass Board of Trustees.", "source_id": 1581}, {"year": 2020, "date": null, "kind": "note", "detail": "Proposed redevelopment into Dorchester Bay City biotech science park.", "source_id": 1582}, {"year": 2023, "date": null, "kind": "note", "detail": "Approved by Boston Planning & Development Agency.", "source_id": 1583}], "sources": [{"id": 323, "site_id": "m-188df7b33c", "url": "https://en.wikipedia.org/wiki/Bayside_Expo_Center", "title": "Wikipedia: Bayside Mall", "publisher": "Wikipedia", "date": "2026-08-16", "quote": null, "kind": "wikipedia", "license": "CC BY-SA 4.0", "retrieved": "2026-10-18"}, {"id": 1577, "site_id": "m-188df7b33c", "url": "https://en.wikipedia.org/wiki/Bayside_Expo_Center", "title": "Quoted support for status", "publisher": null, "date": null, "quote": "In 2023, the Boston Planning & Development Agency approved the Accordia Partners proposal.", "kind": "wikipedia", "license": null, "retrieved": "2026-10-18"}, {"id": 1578, "site_id": "m-188df7b33c", "url": "https://en.wikipedia.org/wiki/Bayside_Expo_Center", "title": "Quoted support for strategy", "publisher": null, "date": null, "quote": "In 2020, Accordia Partners proposed redeveloping the property into a 21-building mixed-used biotechnology science park called 'Dorchester Bay City'.", "kind": "wikipedia", "license": null, "retrieved": "2026-10-18"}, {"id": 1579, "site_id": "m-188df7b33c", "url": "https://en.wikipedia.org/wiki/Bayside_Expo_Center", "title": "Timeline", "publisher": null, "date": null, "quote": "In 2010, it was purchased by the University of Massachusetts Boston after the building went into foreclosure.", "kind": "wikipedia", "license": null, "retrieved": "2026-10-18"}, {"id": 1580, "site_id": "m-188df7b33c", "url": "https://en.wikipedia.org/wiki/Bayside_Expo_Center", "title": "Timeline", "publisher": null, "date": null, "quote": "After the building's roof collapsed from the weight of accumulated snowfall during the 2014–15 North American winter, the university demolished the facility in 2016.", "kind": "wikipedia", "license": null, "retrieved": "2026-10-18"}, {"id": 1581, "site_id": "m-188df7b33c", "url": "https://en.wikipedia.org/wiki/Bayside_Expo_Center", "title": "Timeline", "publisher": null, "date": null, "quote": "In 2019, the University of Massachusetts board of trustees leased the property to Accordia Partners.", "kind": "wikipedia", "license": null, "retrieved": "2026-10-18"}, {"id": 1582, "site_id": "m-188df7b33c", "url": "https://en.wikipedia.org/wiki/Bayside_Expo_Center", "title": "Timeline", "publisher": null, "date": null, "quote": "In 2020, Accordia Partners proposed redeveloping the property into a 21-building mixed-used biotechnology science park called 'Dorchester Bay City'.", "kind": "wikipedia", "license": null, "retrieved": "2026-10-18"}, {"id": 1583, "site_id": "m-188df7b33c", "url": "https://en.wikipedia.org/wiki/Bayside_Expo_Center", "title": "Timeline", "publisher": null, "date": null, "quote": "In 2023, the Boston Planning & Development Agency approved the Accordia Partners proposal.", "kind": "wikipedia", "license": null, "retrieved": "2026-10-18"}], "deals": [{"id": 27, "site_id": "m-188df7b33c", "kind": "sale", "date": null, "year": 2010, "acres": null, "sqft": null, "buyer": "University of Massachusetts Boston", "seller": null, "broker": null, "lender": null, "loan_maturity": null, "loan_status": null, "listing_url": null, "status": null, "notes": "scope: property", "source_url": "https://en.wikipedia.org/wiki/Bayside_Expo_Center", "source_title": "Wikipedia", "source_date": null, "quote": "In 2010, it was purchased by the University of Massachusetts Boston after the building went into foreclosure.", "verified": "draft", "retrieved": "2026-10-18"}], "parties": [{"name": "University of Massachusetts Boston", "kind": "owner", "role": "owner (from text)", "year_from": 2010, "year_to": null}], "parcels": [], "context": {"assessment": {"what_happened": "Bayside Mall opened as a shopping mall in the 1960s, later transitioned to a convention center before declining. In 2010 the University of Massachusetts Boston purchased the foreclosed property, and after a roof collapse from heavy snowfall the facility was demolished in 2016. The site was leased to Accordia Partners in 2019, approved for a mixed-use biotech science park in 2023, and is currently under redevelopment.", "why": "The record shows the mall's decline led to foreclosure, and the subsequent demolition was caused by a roof collapse from heavy snowfall. No explicit anchor loss, competition, or debt factors are stated in the record.", "where_it_stands": "The site is approved for redevelopment and is under the control of Accordia Partners, which leases the property from the University of Massachusetts Boston.", "for_a_planner": ["Entitlement granted in 2023 by the Boston Planning & Development Agency, reflecting a formal redevelopment approval.", "Strategy listed as redevelopment with a planned mixed‑use outcome, indicating policy support for adaptive reuse.", "Open questions not detailed in the record include construction timeline, phasing, and any community benefit or affordable housing provisions."], "for_a_developer": ["Control: leased by Accordia Partners from the University of Massachusetts Boston (owner since 2010).", "Entitlement stage: approved (2023); no further permitting details are provided.", "Site size, flood risk, transit access, environmental constraints, and local market signals are not specified in the record."], "risks_and_unknowns": ["Verification status is 'draft', indicating the record has not been fully reviewed.", "Key physical details such as site acreage, building footprint, and parcel boundaries are missing.", "Environmental and hazard context (flood zones, soil conditions, transit proximity) is not provided.", "Market‑level data (tract demographics, rent comps, demand for biotech space) are absent, limiting opportunity assessment.", "The opportunity score is 0.0 with reasons noting the project is already in play, but underlying drivers are not elaborated."], "data_quality": "partial", "one_line": "Bayside Mall, opened 1960s, failed, demolished 2016, now approved for mixed-use biotech park by Accordia Partners under UMass Boston lease.", "model": "nvidia/nemotron-3-super-120b-a12b", "machine": "NVIDIA API via Hermes CT", "record_sha1": "e3f65777ee66"}, "pageviews": {"article": "Bayside_Expo_Center", "months": 136, "total": 38596, "last_12m": 2864, "prior_12m": 2779, "trend": 0.03, 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