Thank to @Metropol that he found a fix for the bug of falling thru the map, i'll copy paste his comment
"""Works flawlessly with v1.0.877.1!
For everyone falling through the map or being teleported back out from Eclipse Tower (or any other garage) with a parachute on your back, there is another mod messing things up. Apparently, SPG doesn't work well with the Online map turned on. In my case it was Benny's Original Motor Works 1.5.3 who turned on the online map. If I set OnlineMap = 0 in Benny's, SPG works fine. Hope it helps ...
Kudos to the developer!"""
in my case was the mod "New Street Phone Missions" in the setting I disabled the "PreLoadOnline" to false.
For who want to delete the old payed garages, in the root folder you'll find a file called "SPG_UserData.sav" just delete that

So far so good. Little fps drop about 5fps so i deleted the other garages that im not going to buy and saving Addon cars is no problem

Plz fix the issue with persistence mod plz

@Agus123 bro how to use Michael garage 3 + party terrace in your mod that you gave us link because it spawn but do not show icon for buying

@Sammy_SMD As of 14th of October 2023, this fix works on the latest of everything.

Люди добрые,помогите пожалуйста.Поделитесь проверенным способом-рабочим Мод «Купить Много Гаражей» и недвижимость для одиночной игры GTA5 сборка 3028
Чтобы на карте появилось много гаражей для покупки и игра при самой покупке не выключалась.

This mod works flawlessly, please make sure to read instructions. Big thanks to creator

This works amazing! just one issue, is there a way to delete or sell a garage you bought if you dont want it anymore? i went thtough the edit section of the f5 and cant find any button for that.

also is there a way to change the mechanical menu for a diffrent button, i have f5 set for car mod

@MrBaconChops just detele it from the ini file bro

is there a way to add car images to the cars in garage? I thought possibly putting image in the dlcpack folder for said car and try but wanted to see forsure.

quick question i have both scripts installed but where do i put this single player garage file in? please someone help thank you

Tell me how to remove the black squares with descriptions above the cars in the garage? These black ones just spoil the whole look.

@foxcom670 i have the same problem with the ten car garage

I have a problem where it wont save my cars inside the garage it gives me some kind of error says access denied

Over all nice mod but why is the call vehicle section in mechanic not showing car names.i notes this issue for add-on cars anu way to fix this

Does this allow me to store modded add-on cars that ive spawned with a trainer so they're there when I load the game up? I know I can just spawn them with the trainer when I want them but want to build a garage :)

Can i use saved cars in director mode?

There is a problem where my liveries will not save in the garage. I followed all the install steps. I'n not sure what I did wrong

@GTAStoryModeEnjoyer Same if anyone knows how to fix pls tell

@Adxzyy96

there's a solution. This mod is old and has not been updated in a long time. you should download Single Player Garage Reloaded by HKH191