So far I have seen this:
Hookies is located in Northern Chumash, and is an average property investment. The cost of this property is $600,000, and it gives a weekly income of $4700. Only Michael and Franklin can buy this place.
Sonar Collection Docks
The Sonar Collection Docks is a property that is unlocked after ‘The Merryweather Heist” mission. It is located in Paleto Cove. The property costs $250,000 and is available to any character. The revenue is $23,000 per Nuclear Waste found.
Nuclear Waste can be found via a submarine or a Nuclear Waste locator app on your phone which is unlocked after buying the property.
The Hen House
The Hen House is located in Paleto Bay. It costs $80,000 and gives a revenue of $800 weekly. It is a low-cost, low-reward investment. Any character can buy this
McKenzie Field Hangar
This property in Grapeseed, Grand Senora Desert. It costs $150,000, and is exclusively available to Trevor. The revenue is $5000 per ground shipment and $7000 per air shipment. These shipments transport and collect weapons in and out of San Andreas. You definitely want this property if you enjoy flying.
Los Santos Customs
This property is located on Route 68 in the Grand Senora Desert. It costs $349,000, and has a revenue of $1,600. It is exclusively available to Franklin for purchase. All of Franklin’s car modifications are free here.
This property is located in Morningwood Bulevard, Morningwood (what a funny name!). The cost of this property is $30,000,000, but it also gives a good revenue of $142,300. It is exclusively available to Michael.
Los Santos Golf Club
The Golf Club is in the GWC and Golfing Society, Richman. It costs a ridiculous $150,000,000 and gives earnings of $264,500 weekly. This property is available for all characters to purchase.
The corny named place is located on Eclipse Boulevard & Milton Road, West Vinewood. It is available after the mission “Vinewood Souvenirs – Willie” and costs $2,000,000. It has a revenue of $16,500, and can be bought by any character.
Pitchers is located in downtown Vinewood. It costs $750,000, and gives a revenue of $7000. Any character can buy this.
The Vinewood Garage is located on Las Lagunas Boulevard & Spanish Avenue in West Vinewood. It costs $30,000 and Michael’s personal garage. Vehicles purchased from the internet are stored here. Other stolen vehicles can also be stored.
This is located on Power Street Downtown Vinewood. It costs $10,000,000, and has a revenue of $132,200. It is available to Michael only.
Los Santos International Hangars
Your very own hangar? Sweet! Franklin can purchase Hangar 18 (interesting), while Michael can purchase Hangar 19. Each Hanger costs $1,378,000, and is available at the New Empire Way, Los Santos International Airport. Note that Trevor does not need to purchase hangars.
The hangars are purchased at the DYNASTY 8 sign in front of the main gate. Planes and tanks purchased from the internet can be stored here.
These helipads are located in La Puerta. Helicopters purchased from online or stolen helipads can be parked here. Again, Michael and Franklin can buy the helipads, while Trevor does not need to purchase them. Each helipad costs $419,850.
Smoke on the Water
This property is located at the Vespucci Beach, Melanoma Street. It costs $204,000 and gives a revenue of $9,300, and can only be purchased by Franklin.
Puerto Del Sol Marina Slips
These marina slips are located at La Puerta. Each character can purchase one for himself. The cost of each marina is $75,000. Boats purchased from websites can be stored here, and so can stolen ones.
Are there more?
Also to anybody that beat the game, what are all of the safe houses that are acquired through the story and by the end who has the best house?