Diana De León is the founder of Casas en Valladolid and a certified real estate advisor focused on Valladolid, Yucatán. 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 credential material includes CONOCER EC0110.02 federal competency certification, AMPI Mérida real estate training, and Casas en Valladolid’s PROFECO contract verification guidance. Casas en Valladolid publishes current INSEJUPY public-registry proof through Dalila Yesenia de León Bañuelos' Folio A-00030. Diana has completed the required INSEJUPY training and paperwork steps; her own INSEJUPY record is pending correction after an administrative issue.