LOS ANGELES, CALIFORNIA: Matthew Perry the beloved 'Friends' star had reportedly renovated his backyard and added an infinity pool and elaborate alarm system to his Pacific Palisades home months before he was found dead in the newly-installed hot tub.

Matthew Perry’s pool and spa project

According to the documents, as reported by RadarOnline from the Los Angeles Department of Building and Safety, Perry applied for a permit for “excavation and backfill for a pool/spa” in the backyard of his mansion back in August 2022.

The building plans also showed that the actor installed an elaborate alarm system for all doors that gave access to the pool area.

“Provide an alarm for all doors the dwelling give access to pool,” the notes on the architectural plans stated, as per the publication.

“The alarm shall sound continuous for a minimum of 30 seconds when the door is open.

"It shall automatically reset and be equipped with manual means to deactivate for 15 seconds maximum for a single opening. The deactivation switch shall be at least 54” above the floor.”

The renovations were designed by the renowned Scott Joyce Design Inc in West Hollywood whose handy work has been featured in House Beautiful, House & Garden, and Luxe Interiors + Design, the outlet noted.

The renovations also included land grading to give Perry a stunning view of the horizon, building records showed.

Matthew Perry’s final Instagram post from his hot tub

Perry, 54, known for playing Chandler Bing posted an Instagram photo of himself lounging in his new pool and the hot tub where he was found dead and "floating face down in the water" by his assistant on October 28, according to multiple reports.

He had sent his assistant to run an errand and was alone at home. “An adult male patient was deceased prior to first response arrival,” the LAFD said in a statement published in the New York Post.

“The patient was found by a bystander who had re-positioned the victim where the head was out of water.”

“Firefighters pulled the victim out of the jacuzzi and did a quick medical assessment to find he was deceased.”

It is unknown how long the 'Fools Rush In' star was unconscious and the LA County Coroner’s Office is conducting toxicology tests to determine his exact cause of death.