The design started by del Villar was Gothic revival in a standard form, and ultimately as Gaudi continued to work on it, - he made some additions on the designs; - Art Nouveau and Modernisme (the new bulding).
Gaudi began working exclusively on the temple since 1914 until his death in 1926 and was buried in the crypt. At the time of his death, only 15-20% was completely done.
In the 1950's construction resumed to intermittent progress, and modern technologies resulted to faster progress and construction has passed the midpoint in 2010.
In October 2015, current chief architect Jordi Fauli announced that 70% of the construction has been done and is now currently in its final phase of building 6 immense steeples. Most of the church's structure is estimated to be done by year 2026, - the centennial year of Gaudi's death.