Osman Designpac Home ›› Local Listings ›› QLD ›› Underwood ›› Osman Designpac QLD Construction Underwood, QLD 4119 Jeff Osman+61 7 3841 3200Fax: +61 7 3841 3327https://www.osmandesign.com.au Osman Designpac Building Designers was established in 1978 and specialises in using passive energy principles to design residential, commercial and industrial projects. We offer highly detailed drawings and documentation using 3D technology.