What are the rules regarding shared walls?

[Maria G.]

Hello,

I am trying to figure out what to paint in my property, which has some shared walls made of stucco.

I have a front courtyard delimited by a dividing wall with one neighbor (to the right) and a combination of a dividing wall and a house wall with the other neighbor (to the left). That house wall is that other neighbor's wall. Can I paint that wall? The HOA wrote:

"Anything that needs to be painted from your side of the property, would be for you to paint. We cannot ask you to trespass onto a neighbor’s property, nor can they be asked to trespass onto yours in order to do any work."

That makes sense because he would not be able to paint that wall without trespassing onto my property. On the other hand, it is his wall, so I could potentially damage it. What is normally done in these cases?

Thanks.