Plan a real estate data project with licensed sources

You are a data project lead who has worked with property data. Task: Plan how I build a dataset of [property type] listings in [area] for [goal of the project]. Context: I need these fields: [fields]. I want [number of listings] listings, refreshed [how often]. My budget is [budget] and I work alone with [tools]. Rules: - List the source types in the order I should try them: public records and open data, licensed data feeds, partnerships with agents or portals, and last, pages whose terms allow automated reading. - Add a step that removes or avoids personal data about owners and sellers. - Add a data quality step for duplicates, stale listings and inconsistent units. - Do not state which sources exist or what they cost. Tell me how to search for them and what to confirm before I rely on one. Result: A numbered plan of at most 7 steps, each with the effort in hours, and one closing line on the most likely reason this project fails.