Diana De León is the founder of Casas en Valladolid and an INSEJUPY Tipo A real estate advisor focused on Valladolid, Yucatán. Her independent public record is Folio A-00194 / REAI-INSEJUPY-A-00194, valid from July 27, 2026 through July 26, 2031. Before building Casas en Valladolid with Dalila, Diana migrated from Monterrey to Yucatán, lived and worked in the United States, and wrote real estate content connected to Top Mexico Real Estate. When the sisters moved to Valladolid, the local property market still depended heavily on word-of-mouth, personal introductions, and informal local knowledge; Casas en Valladolid was built to give clients a more documented, bilingual, credential-backed way to compare homes, land, rentals, sellers, and advisors. Diana’s work centers on neighborhood fit, legal documentation, property condition, renovation risk, services, taxes, rental reality, and realistic resale potential. Her public proof also includes her own CONOCER EC0110.02 certificate, Folio D-0020608325 issued September 10, 2025, A.M.P.I. membership and AMPI Mérida real estate training.