Extension Factory - Custom Designers And Builders Home ›› Local Listings ›› VIC ›› Mulgrave ›› Extension Factory - Custom Designers And Builders VIC Business Services Mulgrave, VIC 3170 Emily Smith03 9561 5444https://www.extensionfactory.com.au Extension Factory is situated in the more prominent Melbourne area.The Extension Factory fashion a solid notoriety as Melbourne's head home expansion and home remodel company.Extension Factory has the experience and skill to make the home you had always wanted from idea to finishing. Call us for a free, no commitment in home meeting.