Jamie Karslake, 49, pleaded guilty to six charges at the Ballarat Magistrates' Court on Wednesday.

Police prosecutor Senior Constable Ben Jones told the court police executed a search warrant at Karslake's property on November 18 where they found guns and drugs.

The court heard Karslake told police methylamphetamine and cannabis located in his shed was for personal use. Scales, zip lock bags and $1,240 was also located.

Senior Constable Jones said Karslake then showed police behind a tarped area in the shed where 12 firearms were found in various bags.

In total, 21g of methylamphetamine, 2.75 ounces of cannabis, 0.89g of heroine, one LSD tablet, one ecstacy tablet and two MDMA capsules were.

The court heard the father-of-five did not hold a firearms licence and made admissions to possessing drugs of dependence.

He told police the firearms were left at his property by a friend and he had no criminal involvement with them.

Defence lawyer Manny Brennan said Karslake also told police the identity of the friend who owned the firearms in a record of interview.

"This is really a matter where Karslake has been involved in serious offending in the number of firearms that have been retrieved from his house... but he was not aware of the quantity of firearms, just that his friend had requested to leave them in his shed," he said.

Mr Brennan told the court the drugs were for personal use only and Karslake had been cooperative with police in regards to the firearms.

The court heard Karslake began using methamphetamine two-and-a-half years ago when he fell in with the 'wrong crowd'.

Mr Brennan said Karslake had a long history of full-time work and had completed a number of courses while in custody.

"This is his first time in custody and has been a real shock to the system," Mr Brennan said.

Karslake will be sentenced on Friday. He has already served 50 days in pre-sentence detention.

Mr Brennan submitted time served and a community corrections order would be an appropriate sentence.

Magistrate Ron Saines has asked Karslake be assessed for a community corrections order and for further police evidence relating to the owner of the firearms that were stored at the Haddon property.