To buy a garage in GTA V story mode, make sure you've saved up enough cash. Next, explore the game map and keep an eye out for locations where garages are available for purchase. There might be specific characters or NPCs you need to interact with to make the deal. Once you find the right place, follow the instructions to finalize the purchase.
First, you need to have enough in-game money. Then, look for real estate websites or signs within the game that offer garages for sale. Just follow the prompts and complete the purchase process.
Buying a garage in GTA V story mode isn't too complicated. Save up a good amount of money. Then, drive around the city and you'll come across areas where garages are on the market. Interact with the relevant markers or people, and follow the steps shown on the screen to own your garage.