Esteban went missing from his family holiday home in Daylesford on April 11. Despite intensive searches of the Daylesford area, he has not been seen since.

Esteban's distraught family is appealing for people living in the town to look through their dash cams and CCTV for footage of Esteban leaving the home at 9 Albert Street on foot between midnight and 7am.

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It is hoped obtaining footage, particularly from surrounding streets, will help to piece together which direction he travelled in so the search area can be narrowed down further.

Esteban is 182cm tall with a medium build. He has a chronic illness - fibromyalgia - which means he has a sensitivity to light and sound.

The condition also causes extreme fatigue so he needs to take breaks when walking distances. He also has a slight limp when he walks.

His sister-in-law, Kristie Garrett, said the past three weeks had been horrible, especially for Esteban's wife and children.

"I wouldn't wish this on anyone. We are still hoping but the unknown is the worst."

Esteban was last seen wearing blue jeans, a black 2XU puffer jacket and was carrying a green satchel and tan-coloured water bottle. Due to his condition he also often wears glasses, a hat, earbuds and fingerless gloves.

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Last week Daylesford police urged the community to keep an eye out for Esteban.

Family, friends and emergency services have combed the area searching for Esteban, who has been described as a "family man".

State Emergency Service volunteers will search the Victoria Park and Sailors Falls areas again early this week.

Police urged anyone who saw Esteban to call triple 0. Anyone with other information should contact Crime Stoppers on 1800 333 000 or log a confidential report through www.crimestoppersvic.com.au

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