You cannot claim the parking space if it is a government road or if that belongs to that association.
Just living in that area for over four decades will not entitle you to claim ownership of that parking space.
In fact if that is a government road then even that association cannot claim ownership nor it can ask you to remove your vehicle from that place.
You first ascertain that if it is a government road, then you may ask them to proceed legally and refuse to remove your car from that place.
You may mention that yo too pay road taxes hence you also have rights to park your vehicle on the road belonging to government.