A Blenheim man got into a fight with his friend's neighbour after claiming he was "bludging cigarettes".

David Wayne Turner, 50, admitted assault and threatening language at the Blenheim District Court on Monday.

Police said Turner visited a friend, who lived in a back section, on November 30 last year.

He was upset that people from the front unit had been "bludging cigarettes" from his friend which Turner partly paid for.

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Turner confronted the man who lived in the front unit.

"Come over here one more time and I will bash the living daylights out of you, boy," Turner said.

Later that day he returned and confronted the man's adult daughter who lived in the front unit about the same issue.

"I'll smash your beautiful face, and once I'm finished with it it'll be beautiful no more," he told her.

The man he spoke to earlier heard this, and said, "I will not let anyone talk to my children like that, or harm my children".

He reached out to shake Turner's hand.

Turner pulled the man towards him and punched him in the mouth.

The man grabbed Turner's shirt, and the two men fought, falling over a railing and onto the lawn.

Turner punched the man several times to the body while they were on the ground before they separated.

"If you ever come to [the rear unit] again, I'll get you and your children, if they come over, I'll get them," Turner said.

The man broke his finger in the fight and had several grazes.

When spoken to by police, Turner said the man tried to headbutt him, and his mohawk grazed Turner's chin.

Turner claimed he had styled the man's mohawk a few days earlier.

He also denied threatening the man and the woman, and said the fight ended when he had the man in a bear hug.

Police sought an order for an anger management course.

His lawyer Rob Harrison said Turner had been unwell and would benefit more from mental health services than punishment.

Judge Peter Butler convicted Turner and ordered him to come up for sentencing if charged with a similar offence within the next 12 months.