Timothy Stewart was out on parole when he visited the White Street property occupied by Blueline Heating and Cooling, on the night of August 24 last year.

Closed circuit television (CCTV) cameras recorded the 22-year-old as he climbed over a fence and attempted to get inside a locked vehicle, court documents revealed.

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Stewart used an unknown object to smash a window and get into the vehicle. Once the glass smashed, he reached in and unlocked the vehicle before he riffled through three toolboxes. The smashed window cost the business about $500.

Police charged Stewart with unlawful entry on inclosed lands and property damage offences, which he pleaded guilty to. Stewart was convicted of both offences when he appeared in Dubbo Local Court last week.

In court it also emerged police had accused Stewart of breaking into another business after the initial intrusion.

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Stewart was found not-guilty of entering Robertson's Motorcycles on September 4 because Magistrate Gary Wilson said the 10 seconds of CCTV footage the police relied upon to charge Stewart was of such poor quality it was "impossible to identify" a culprit.

"Police have concerns that the custodial sentence he just served did not rehabilitate him and he has returned to his old ways once released," police warned in court documents. "This poses a significant risk to the community."

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Stewart's legal representative told the court his client started smoking marijuana at age nine and ice at 13. The court heard once released from custody, Stewart planned to attend a rehabilitation facility.

Magistrate Gary Wilson sentenced Stewart to four months and six days in jail, which was backdated to when he was first remanded in custody in September. Stewart became eligible for release after his court appearance last week.