Stephen McAulay, 35, lashed out at James Duncan outside his home in Glasgow’s Carntyne on May 13 2024.
The pair initially fought amid an ongoing dispute about a parking space on their road.
The men later argued about by text message before McAulay went to crane operator Mr Duncan’s home armed with a knife.
The attacker swung at his victim’s head and body which has left him with a string of serious injuries which includes severe loss of sight in one eye.
McAulay pleaded guilty at the High Court in Glasgow to attempted murder.
The court heard that earlier in the day, McAulay challenged Mr Duncan about a letter that was placed on his car.
He believed that it had been put there by Mr Duncan or his wife.
Mr Duncan called McAulay “stupid” and that it had been left on the vehicle by the city council who wished cars to be moved from the area in order for work to be carried out.
CCTV showed the two men then coming together in a struggle at the time.
The pair later went on to exchange text messages with each other which related to where McAulay parks his car and a letter.
Over an hour later, McAulay attended at Mr Duncan’s home with a knife in the back of his trousers.
Mr Duncan then attended to the front of his property.
A woman at the scene is heard to shout: “Go Stephen” before McAulay revealed the knife.
Prosecutor Alexandria Kirk said: “McAulay stabbed Mr Duncan multiple times to the head, body and face.”
The attacker then fled the scene in a red Corsa as another neighbour performed first aid on the victim.
Mr Duncan was taken to hospital and was noted to be “bleeding profusely” and slipping in and out of consciousness.
Miss Kirk added: “The examination of Mr Duncan revealed multiple wounds on the face, shoulder and left flank with significant external blood loss.”
He was found to have suffered a suspected injury to his left colon, an abdominal injury as well as wounds to his chest wall and nose.
Mr Duncan’s chest was drained to relieve a collapsed lung, provided antibiotics and given a blood transfusion.
His condition continued to deteriorate and he was put into an operating theatre where his left chest was drained.
Mr Duncan sustained a wound to his diaphragm and colon as well as a partially transected rib.
An eye injury was noted to have pierced the cornea which has now resulted in poor vision which can only register light and dark.
Miss Kirk said: “The doctor’s view is the injuries sustained were life threatening without treatment and will result in permanent scarring. Mr Duncan will have ongoing issues requiring further specialist input.”
A stoma that was also inserted may be removed in the future.
Since the incident, Mr Duncan has reported low mood and anxiety and has not returned to work.
Sentence was deferred pending background reports until next month at the High Court in Edinburgh.
McAulay was remanded into custody by Judge Lord Young.
