Editing Sigma Pi (section)

===International era, 1980 to the present===
The fraternity chartered 42 new chapters in the 1980s.

Sigma Pi became an international organization in 1984 with the chartering of Zeta-Iota chapter at [[Western Ontario University|Western Ontario]] in [[Canada]].<ref name = "Bairds1990" /> The fraternity subsequently changed its name to Sigma Pi Fraternity International.

In 1988, the fraternity received the [[Rose Hill Farmstead]] from the family of founder George Martin Patterson and sold the property to the Sigma Pi Educational Foundation in 1992.<ref>{{cite magazine|date=Winter 2000|volume=86|number=1|magazine=The Emerald of Sigma Pi|title=Sigma Pi and Historic Preservation|pages=7–10|url=http://www.enivation.com/SigmaPi/archive/Emerald/2000/SP_Emerald_VOL_86_NO_1_WINTER_2000.pdf|archive-url=https://web.archive.org/web/20170815024407/http://www.enivation.com/SigmaPi/archive/Emerald/2000/SP_Emerald_VOL_86_NO_1_WINTER_2000.pdf|url-status=usurped|archive-date=August 15, 2017}}</ref>

The fraternity moved its international offices to [[Brentwood, TN]] in 2003, selling the Shadowwood Estate in 2005. The offices again moved in 2007.<ref>{{cite magazine|last=Dibble|first=Adam|date=Summer 2007|volume=92|number=2|magazine=The Emerald of Sigma Pi|title=Ribbon Cutting and Grand Opening of International Headquarters|pages=2|url=http://www.enivation.com/SigmaPi/Archive/Emerald/2007/SP_EMERALD_VOL_92_NO_2_SUMMER_2007.pdf|archive-url=https://web.archive.org/web/20170826031024/http://www.enivation.com/SigmaPi/Archive/Emerald/2007/SP_EMERALD_VOL_92_NO_2_SUMMER_2007.pdf|url-status=usurped|archive-date=August 26, 2017}}</ref> In 2013, the fraternity purchased the [[Mitchell House (Lebanon, Tennessee)|Mitchell House]] in [[Lebanon, Tennessee]] for its headquarters, holding the grand opening in 2014.<ref name = offices/><ref>{{cite news |last=Felkins |first=Jared |date=November 8, 2013 |title=Cracker Barrel sells Mitchell House to fraternity |url=http://www.lebanondemocrat.com/Business/2013/11/07/Cracker-Barrel-sells-Mitchell-House-to-fraternity |newspaper=Lebanon Democrat |location=Lebanon, Tennessee |access-date=August 7, 2017 |archive-url=https://web.archive.org/web/20170807235239/http://www.lebanondemocrat.com/Business/2013/11/07/Cracker-Barrel-sells-Mitchell-House-to-fraternity |archive-date=August 7, 2017 |url-status=dead |df=mdy-all }}</ref><ref>{{cite news |author=<!--Staff writer(s); no by-line.--> |title=Sigma Pi buys Mitchell House|url=http://wilsonpost.com/sigma-pi-buys-mitchell-house-cms-82541|newspaper=The Wilson Post|location=Lebanon, Tennessee |date=November 6, 2013 |access-date=August 7, 2017}}</ref> The Executive Office later moved to Nashville.