costs and at the same time improve living spaces by using standardised floor plans and employing the newly available steel frame construction methods. He therefore oriented and designed his developments to maximise the use of sunlight, replacing corridors with living rooms able to benefit directly from the afternoon sun, and bedrooms directly accessible from the day-time living spaces. He rationalised and industrialised modern residential development.

There are three residential Otto Haesler developments in Celle dating from the mid