Klaus Philipsen, the president of ArchPlan Inc., has 35 years of experience with residential design and multifamily housing. In 1974 he worked with public housing residents on the rehabilitation of their units and co-authored a rehab handbook for tenants. Since then he has worked as project manager/architect in award winning mid size design firms in Germany and the US and in his own company on many housing and residential projects.  ArchPlan?s housing projects range from high end condominiums to affordable rental units and from new construction to historic preservation and adaptive reuse of former office and factory buildings. ArchPlan has transformed hundreds of vacant Baltimore rowhouses into affordable homes for first time homebuyers through a variety of programs and a number of community based development corporations.