Released in 1978, Mansion Builder would feature 11 songs that had as its major theme welcoming the joyful return of Christ. Most of the songs were written by Annie with the exception of the soulful Psalm 93 which was written by Matthew and the group's keyboard player Richard Souther. Also, "Make My Life a Prayer to You" was provided to the project by new Christians and friends Kieth and Melody Green. Nelly would sing the lead to this tune.

Mansion Builder features the title cut "Mansion Builder" that would become 2nd Chapter's biggest and most popular hit next to "Easter Song".