Although the judge in the case had originally ordered Lindsay to a lockdown facility, in which patients are unable to leave by choice, the star's lawyer and prosecutors have settled on the non-lockdown institution due to its high security.
The facility was reportedly chosen as it boasts 24-hour staffing and security cameras, which will make it easier to keep a watchful eye over the troubled 26-year-old star, as well as notify police should she leave and violate her probation.
While the 'Liz & Dick' star is technically free to leave the non-lockdown centre of her own will, leaving the facility would constitute a violation of her plea deal and likely result in the judge ordering Lindsay to jail.
Lindsay will be expected to adhere to Seafield's strict policies, which include banning mobile phones and tobacco, as well as a strict dress code, during her stay.
Meanwhile, the actress will allegedly receive a 90-day rehab programme created just for her, as patients don't usually stay beyond 28 days.
Lindsay is expected to begin her rehabilitation in early May and has hailed the medical intervention as a "blessing".
She told 'The Late Show with David Letterman' on Tuesday: "To be honest, I'm happiest when I'm working - the healthiest.
"I think this is an opportunity for me to focus on what I love in life. And I don't think it's a bad thing. I think it's a blessing."