It does not belong to builder as garage is built on land belonging to land owner 

The builder has no right over open space where this garage is proposed to be built.

It will belong to the land owner.

It will belong to the landowner as we he has ownership of the land where the garage would be erected.

- As per Supreme Court, Builder has no right to sell parking to apartment-owners, including stilt parking or garages; .the car parking is a part of the society's common area 

- Further , if the property is in the society , then a garage cannot be build without taking the permission of the society

- However , if the garage is build by the landowner in his property , then the builder will have no right  

Dear client the land will obviously belong to those person on home the land is register and so is the building upon that land until and unless a contrary contract is made

If the your property has individual title ownership to than it's require your permission otherwise it's society or going to form society than need to take permission from my builder if society is not formed and whether society is formed than take permission from society.

Landowner