Today  Real  estate  companies  face  the  challenge  where  extensive  renovations  on  existinghousing built before 1980 must be performed. Conditions have changed and the housing need performance-­?enhancing measures that meet today's quality. With a current renovation rate,  it  would  take  30  years  to  meet  the  renovation  needs.  The  renovation  rate  must therefore rise dramatically, which requires the real estate companies to act consistently in accordance with commercial principles and in an economically, socially and environmentally responsible way.The  paper  discusses  renovation  strategies  in  four  municipal  housing  companies  in  the Stockholm  suburbs.  The  report  includes  surveys  of  four  ongoing  renovation  projects; Fastighets AB Förvaltaren in Sundbyberg project Hundloken 3, Stiftelsen Signalisten in Solna project Ritorp, Sollentunahem in Sollentuna project Svalgången och Väsbyhem in Upplands Väsby project Dragonvägen. The main purpose of this study was to analyze the practices of redevelopment projects.