TOISE

TOISE answers land and property questions for real-estate professionals in France, using official open data (DGFiP legal-entity ownership file, DVF transactions, national urban-planning portal, IGN, INSEE, Géorisques, BODACC, ADEME). It finds the cadastral parcel behind an address, what the local zoning plan (PLU) allows there (as a range), the companies that own it and a company's or group's nationwide holdings, filed building permits, recorded sales and price per m², local property taxes, natural and industrial risks, easements and catchment areas; it also computes development and operating appraisals (residential development, trading, rental, hotels). Every answer states its source, vintage and limits, and declines to give an unsupported figure (e.g. no median below five usable sales). All tools are read operations: the connector never creates, edits or deletes anything in the user's account, except the export tool, which stores a downloadable file. Some tools work without an account; others require signing in to a TOISE account (OAuth). Data and answers are in French.