Neighbors at Legal War Over Rihanna's Big Move

Rihanna doesn't like being yelled at by her neighbors, according to a new lawsuit obtained by TMZ.

The owner of the L.A. house Rihanna was renting believes she would have bought his house outright but his neighbor was such a jerk ... she bailed on the deal.

The neighbor had actually sued Rihanna and her landlord, Stephan Yacobian, back in June, claiming the singer and her friends had a bad habit of parking their cars on his property. Rihanna eventually got so fed up with his complaints ... she moved.

Now, Yacobian is going after the neighbor -- claiming he had no right to yell at Rihanna and her friend over parking, because the two property owners had a specific agreement that RiRi could park in the neighbor's driveway.

Yacobian claims the neighbor's "harassing behavior" caused the deal to go south.

Yacobian wants the neighbor to fork over the profits he would have made from the sale.