Tucked away in an old building at Callan Park in Rozelle is a busy centre for film and television production that is barely known to anyone outside the industry.

Rebel Wilson was there trying on costumes for the coming ABC drama series Les Norton this week as the Stan comedy The Other Guy took over from the new ABC-Netflix children's series The Unlisted.

In six years, Gordon Andersen's Callan Park Film Production Services has provided offices and workshops for more than 30 productions including Doctor Doctor, Janet King, Redfern Now, Secret City, the Nicole Kidman film Strangerland and the Adrien Brody film Backtrack.

Mr Andersen estimates $150 million worth of production has gone through the centre since he started operating in a rundown building on a peppercorn rental agreement with the former Sydney Harbour Foreshore Authority.