{"code": "01109", "name": "Collonges", "department": "01", "postcode": "01550", "population": 2398, "data_status": "complete", "prices": {"appartement": {"year": 2026, "sale_count": 16, "median_price_m2": 4179}, "maison": {"year": 2026, "sale_count": 16, "median_price_m2": 4590}}, "prices_period": "janv.–juin 2026", "data_through": "2026-06-30", "price_series": [{"year": 2021, "period": "2021", "type": "Appartement", "median_price_m2": 3536, "sale_count": 51}, {"year": 2021, "period": "2021", "type": "Maison", "median_price_m2": 4000, "sale_count": 51}, {"year": 2022, "period": "2022", "type": "Appartement", "median_price_m2": 3744, "sale_count": 42}, {"year": 2022, "period": "2022", "type": "Maison", "median_price_m2": 4154, "sale_count": 54}, {"year": 2023, "period": "2023", "type": "Appartement", "median_price_m2": 3757, "sale_count": 55}, {"year": 2023, "period": "2023", "type": "Maison", "median_price_m2": 4231, "sale_count": 24}, {"year": 2024, "period": "2024", "type": "Appartement", "median_price_m2": 4420, "sale_count": 25}, {"year": 2024, "period": "2024", "type": "Maison", "median_price_m2": 4231, "sale_count": 29}, {"year": 2025, "period": "2025", "type": "Appartement", "median_price_m2": 3953, "sale_count": 25}, {"year": 2025, "period": "2025", "type": "Maison", "median_price_m2": 4241, "sale_count": 33}, {"year": 2026, "period": "janv.–juin 2026", "type": "Appartement", "median_price_m2": 4179, "sale_count": 16}, {"year": 2026, "period": "janv.–juin 2026", "type": "Maison", "median_price_m2": 4590, "sale_count": 16}], "change_1y": {"Appartement": {"from": 2024, "to": 2025, "pct": -11}, "Maison": {"from": 2024, "to": 2025, "pct": 0}}, "quartiers": [{"code": "011090000", "name": "Collonges", "prices": {"Maison": {"count": 65, "median_price_m2": 4189}, "Appartement": {"count": 27, "median_price_m2": 3925}}, "vs_commune_pct": {"Maison": 0, "Appartement": 0}}], "counts": {"buildings": 1434, "units": 1642, "sales_dvf": 478}, "demographics": null, "summary": "Le prix médian des appartements est de 4 179 €/m² en 2026, en hausse de 18 % depuis 2021. Le prix médian des maisons est de 4 590 €/m² en 2026, en hausse de 15 % depuis 2021. 421 ventes d'appartements et de maisons analysées depuis 2021.", "prices_3_years": {"window": {"to": "2026-06-30", "from": "2023-07-01"}, "appartement": {"count": 27, "median_price_m2": 3925}, "maison": {"count": 65, "median_price_m2": 4189}}, "street_prices": {"page": "https://immobilix.app/prix-immobilier/collonges-01550/rues", "markdown": "https://immobilix.app/api/commune/01109/rues.md", "json": "https://immobilix.app/api/commune/01109/rues.json", "top": [{"name": "Rue du Fort", "slug": "rue-du-fort", "sales": 15, "prices": {"Maison": {"count": 6, "median_price_m2": 3135}, "Appartement": {"count": 9, "median_price_m2": 3757}}}, {"name": "Rue de Pré Bachat", "slug": "rue-de-pre-bachat", "sales": 11, "prices": {"Maison": {"count": null, "median_price_m2": null}, "Appartement": {"count": 11, "median_price_m2": 4104}}}]}, "sources": ["DVF (Demandes de Valeurs Foncières) — Etalab / Cerema", "INSEE IRIS (FiLoSoFi, recensement) — insee.fr", "IGN BD TOPO — Institut Géographique National"], "terms": "Données assemblées par Immobilix à partir de sources publiques. Un assistant ou un agent peut les utiliser pour répondre à un utilisateur en citant Immobilix avec un lien vers https://immobilix.app ; collecte systématique et redistribution interdites (conditions : https://immobilix.app/cgu)", "attribution": "Immobilix — https://immobilix.app", "url": "https://immobilix.app/prix-immobilier/collonges-01550", "more_on_website": {"url": "https://immobilix.app/map/commune/01109", "content": "Carte de chaque bâtiment : historique des ventes, logements, DPE, estimation de prix par logement."}}