Officers were called to an address in Ladbroke Road around 11.10pm after a seriously injured man was discovered inside the property.
He was taken to hospital where he remains in a critical condition.
The men aged 35, 37, 50 and 46 years and all from Redhill, were arrested at the scene.
Detective Sergeant Leigh Wall, who is investigating the incident, said:
“This was a nasty attack which has left the victim with extremely serious injuries. We would, however, like to reassure the local community that it is believed these men were known to each other and that there is no risk to the wider public. A thorough investigation is underway to ensure those responsible are brought to justice.”
Enquiries remain ongoing and anyone with any information is asked to contact us on 101, quoting PR/45190007416.
Alternatively, if you do not wish to leave your name, call the independent charity Crimestoppers on 0800 555 111.
Three teenagers arrested on suspicion of attempted murder after teen arrives at East Surrey Hospital with multiple stab wounds
Three males (aged 16, 17 and 18) were arrested on suspicion of attempted murder after police were called to East Surrey Hospital at around 23.30 on 23 January. The three have subsequently been released on police bail.
The victim (who has since been transferred to another unnamed hospital) is in a stable condition with potentially life changing injuries.
Police believe the incident happened in the Woodlands Road area of Earlswood, near Redhill, and there will be an increased police presence in the area as officers seek to establish more details.
Detective Inspector Jackie Elkins said:
“While clearly a shocking incident, I want to be reassure the community that these men knew each other and there is no wider risk to the general public. I want to thank the local community for their support and assistance as we conduct a thorough investigation of what happened and bring those responsible to justice.
I would ask people who may know these men not to speculate publicly, but instead to contact us to help us build a picture of who they are and why this has happened.”
Anyone who has any information that could assist the investigation, either because they know the individuals involved, or because they witnessed something in the Woodlands road area of Earlswood last night, is asked to please contact Surrey Police on 101 (999 in an emergency) or http://surrey.police.uk/TellUsMore quoting reference PR/45190008252.
You can also give information, 100% anonymously, to the independent charity Crimestoppers on 0800 555 111; or through their anonymous online form: https://crimestoppers-uk.org/.