Despite the wealth of preserved information, research on the domestic architecture of Seville has been limited. Much of this historical data is available in survey books that were formally compiled in Seville from the Modern Age onwards. These books had detailed descriptions and sometimes illustrations provided by surveyors who were commissioned by owners or tenants.The intention of this study is to illustrate that the information contained in building surveys goes beyond simple descriptions or measurements often accompanied by drawings. They are a comprehensive account that, even centuries later, help reconstruct the architecture, material culture and everyday life that no longer exist. Our research contributes to the understanding of the domestic architectural history of Seville by focusing on one specific survey (a collection of drawings and a written description) extracted from the Hospital de las Cinco Llagas Collection, which is found in the Seville Provincial Council Archive. At least one of the drawings and the written survey can be attributed to the Alarife (architect or master builder) Juan de Legarra, who signed them in 1637.This research explores the architectural development of the city, offering fresh insights into its architecture, heritage, and history. It supplements existing historical, visual, and written records derived from prior studies with a meticulously curated bibliography. Additionally, it uses visualisation techniques to reconstruct buildings, augmenting the research.This endeavour has yielded anticipated benefits, particularly in facilitating visual analysis. The surveys have proven to be invaluable for historical inquiry, yielding unexpected insights through the thorough analysis of both written and graphic sources which serve as a basis for hypothetical construction plans due to their detailed descriptions. Furthermore, this study has contributed to enriching both historical and architectural terminology.The incorporation of digital technologies into this architectural context allows us to expand our knowledge through the exhaustive compilation of building records. It also facilitates in-depth analysis of architecture, which could result in an up-to-date architectural catalogue that would stimulate interest in preserving a legacy that, until recently, was at risk of being lost.