{"id": "n-25bd896d62", "slug": "brentford-former-gsk-building", "type": "office-park", "name": "Former GSK building", "aka": [], "city": "Brentford", "county": null, "state": null, "country": "United Kingdom", "census_division": null, "lat": 51.4864, "lon": -0.32166, "geocode_method": "nominatim-city", "address": null, "metro": null, "original_use": "office", "year_opened": null, "year_closed": null, "acres": null, "gla_sqft": null, "stores_peak": null, "levels": null, "original_developer": null, "original_architect": null, "before_notes": "Draft from lsh.co.uk, model-extracted, unreviewed: A private investor purchased the former GSK building in Brentford in Q1 2024 with plans to convert it from office to residential.", "strategy": ["reinhabit"], "new_use": ["housing"], "share_retrofit": null, "status": "proposed", "year_retrofit": null, "developer": "private investor", "architect": null, "after_notes": "residential", "narrative": null, "narrative_license": null, "narrative_source": null, "zoning_change": null, "public_subsidy": null, "entitlement_year": null, "planning_notes": null, "wikidata_qid": null, "wikipedia": null, "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": 1, "county_fips": null, "opp_score": null, "opp_reasons": null, "for_sale": 0, "distressed": 0, "url": "https://retrofitatlas.org/office-parks/united-kingdom/brentford-former-gsk-building/", "events": [{"year": 2024, "date": null, "kind": "note", "detail": "purchase and proposed conversion", "source_id": 7955}], "sources": [{"id": 7954, "site_id": "n-25bd896d62", "url": "https://www.lsh.co.uk/explore/research-and-views/view-points/2024/june/office-to-residential-permitted-development", "title": "Office to residential permitted development - Lambert Smith Hampton", "publisher": "lsh.co.uk", "date": null, "quote": "former GSK building", "kind": "news", "license": null, "retrieved": "2026-10-18"}, {"id": 7955, "site_id": "n-25bd896d62", "url": "https://www.lsh.co.uk/explore/research-and-views/view-points/2024/june/office-to-residential-permitted-development", "title": "Timeline", "publisher": null, "date": null, "quote": "In Q1, a private investor purchased the former GSK building, Brentford for £69m, with plans to convert to residential.", "kind": "quote", "license": null, "retrieved": "2026-10-18"}], "deals": [{"id": 469, "site_id": "n-25bd896d62", "kind": "sale", "date": null, "year": 2024, "acres": null, "sqft": null, "buyer": "private investor", "seller": null, "broker": null, "lender": null, "loan_maturity": null, "loan_status": null, "listing_url": null, "status": null, "notes": null, "source_url": "https://www.lsh.co.uk/explore/research-and-views/view-points/2024/june/office-to-residential-permitted-development", "source_title": null, "source_date": null, "quote": "In Q1, a private investor purchased the former GSK building, Brentford for £69m, with plans to convert to residential. The building was bought with vacant possession and a price reflecting £99.98 per sq ft.", "verified": "draft", "retrieved": "2026-10-18"}], "parties": [{"name": "private investor", "kind": "developer", "role": "developer", "year_from": null, "year_to": null}], "parcels": [], "context": {"assessment": {"what_happened": "Proposed conversion of a former office-park (GSK building) to housing in Brentford, UK. Private investor purchased the site in 2024. Strategy is 'reinhabit' with new use 'housing' (status: proposed).", "why": "No site-specific details (parcel, address) or conversion specs (density, timeline) provided. Context shows 6 nearby sites within 10km, including 'New Horizons Court' (0km, built) and 'Kew Retail Park' (2.7km, proposed).", "where_it_stands": "Status is 'proposed' with no approval or timeline. Verified as 'draft' (unconfirmed).", "for_a_planner": ["No planning details in record", "No community impact data"], "for_a_developer": ["Private investor ownership confirmed", "No financials or site constraints provided"], "risks_and_unknowns": ["No address or parcel data", "No regulatory pathway specified", "No peer project outcomes referenced"], "data_quality": "partial", "one_line": "Proposed office-to-housing conversion by private investor in Brentford (2024 purchase), status 'proposed' with no site or planning details.", "model": "qwen3-30b-a3b-64k:latest", "machine": "Dell 5820 RTX 3090 (Ollama, qwen3-30b-a3b)", "record_sha1": "c3b80422821e"}, "cluster": {"within_10km": [{"id": "n-38e30fce98", "name": "New Horizons Court", "city": "Brentford", "status": "built", "km": 0.0}, {"id": "n-4705411c21", "name": "Kew Retail Park", "city": "Kew", "status": "proposed", "km": 2.7}, {"id": "n-c00e4036e2", "name": "South Acton estate", "city": "Acton", "status": "under construction", "km": 4.6}, {"id": "n-ed0ce4204a", "name": "Acton Golf Club", "city": "Acton", "status": "built", "km": 4.6}, {"id": "n-a760c1fd76", "name": "Wembley Stadium", "city": "Wembley", "status": "demolished", "km": 7.6}, {"id": "m-ec1abc61e7", "name": "Whiteleys", "city": "Bayswater", "status": "built", "km": 9.7}], "count_10km": 6, "count_25km": 16}, "peers": {"peers": [{"id": "n-dbaa7aa975", "name": "Switchback Office Park", "city": "Maidenhead", "state": null, "score": 5.5, "why": ["same strategy: reinhabit", "28 km away"]}, {"id": "n-7be7f1fd0e", "name": "SAP Objects House", "city": "Maidenhead", "state": null, "score": 5.5, "why": ["same strategy: reinhabit", "28 km away"]}, {"id": "n-f25eac5e8b", "name": "Peregrine Business Park", "city": "High Wycombe", "state": null, "score": 4.5, "why": ["same strategy: reinhabit", "34 km away"]}, {"id": "n-8f060af5e1", "name": "Arundel House", "city": "Windsor", "state": null, "score": 4.5, "why": ["same strategy: reinhabit", "20 km away"]}, {"id": "n-38e30fce98", "name": "New Horizons Court", "city": "Brentford", "state": null, "score": 4.5, "why": ["same strategy: reinhabit", "0 km away"]}, {"id": "n-eeeb86862f", "name": "Grove Business Park", "city": "White Waltham", "state": null, "score": 4.5, "why": ["same strategy: reinhabit", "31 km away"]}], "method": "size, era, strategy, status, type, state, distance"}}, "elements": [{"slug": "strategy-reinhabit", "name": "Reinhabited", "group_": "strategy", "evidence": "residential", "origin": "record"}, {"slug": "place-mall-cluster", "name": "3+ other atlas sites within 10 km", "group_": "place", "evidence": "6 within 10 km", "origin": "computed"}, {"slug": "use-housing", "name": "Housing", "group_": "use", "evidence": "residential", "origin": "newtypes-extraction"}, {"slug": "finance-sold-2020s", "name": "Sold since 2020", "group_": "finance", "evidence": "2024 private investor", "origin": "research-deals"}, {"slug": "status-pipeline", "name": "Retrofit in the pipeline", "group_": "finance", "evidence": "proposed", "origin": "newtypes-extraction"}], "details": {}, "photos": [], "provenance": {"status": "newtypes-extraction", "after_notes": "newtypes-extraction", "developer": "newtypes-extraction"}, "restricted_fields": {"parcels": ["owner_addr", "assessed", "taxable", "tax_amount", "sale_price", "deed_ref"], "deals": ["price", "price_per_acre", "price_per_sqft", "loan_amount", "asking_price"], "how": "free API key: POST /api/v1/keys {\"email\": …}"}}