old ccp 580, CA short sale law

(a) No judgment shall be rendered for any deficiency under a
note secured by a first deed of trust or first mortgage for a
dwelling of not more than four units, in any case in which the
trustor or mortgagor sells the dwelling for less than the remaining
amount of the indebtedness due at the time of sale with the written
consent of the holder of the first deed of trust or first mortgage.
Written consent of the holder of the first deed of trust or first
mortgage to that sale shall obligate that holder to accept the sale
proceeds as full payment and to fully discharge the remaining amount
of the indebtedness on the first deed of trust or first mortgage.
(b) If the trustor or mortgagor commits either fraud with respect
to the sale of, or waste with respect to, the real property that
secures the first deed of trust or first mortgage, this section shall
not limit the ability of the holder of the first deed of trust or
first mortgage to seek damages and use existing rights and remedies
against the trustor or mortgagor or any third party for fraud or
waste.
(c) This section shall not apply if the trustor or mortgagor is a
corporation or political subdivision of the state.