Joe Francis is dropping more than a million bucks to repair his beachfront estate in Mexico after a fire destroyed a large portion of it … and it looks like it’s going to be better than ever. Joe’s been rebuilding his famed Casa Aramara since the June blaze, and hopes to have it completed in around 7 weeks.

Twenty percent of the “Girls Gone Wild” founder’s property was destroyed in the fire — including the living and dining room in the main house, along with 3 bedrooms out of 15 — so the cost for repairs has added up.

Our sources say the Casa’s rebuild will include a new fire protection system that includes fire retardant chemicals, 30 concealed sprinklers in every room and a backup system. Joe feels fire officials in Mexico can’t be relied upon, so he’s becoming self-reliant.

Joe’s oceanside estate in Punta Mita partially burned down in mid-June. Our sources say the official report found the fire was caused by an electrical issue with the air conditioning.

Casa Aramara’s known for being a celeb vacation spot — with past guests that include the Kardashians, Russell Wilson, Ciara, Jason Derulo, Selena Gomez, Eva Longoria, Lance Bass and Ashton Kutcher — and we’re told the plan is for it to be open for business again in early October.