Heather Paul, Realtor
You need to speak with a Real Estate Attorney about your rights in this case. I would also recommend you personally have your property surveyed to be sure of the property lines. I have known of such situations, where one party person felt a fence was on their property line,only to find out later..they were actually using about 2 feet of the neighbors property instead. Don't allow anything to be done until you speak to a lawyer about it.
It is attorney time.
Not Blog time.
Harold Sharpe - Broker
So Cal Homes Realty
California Department of Real Estate Broker License # 01312992
Corrine Draper, GRI, SRES, e-PRO