Thanks for your question. Currently there are no duplexes I see for sale or in escrow in the zip code 90035 for less than $893,500. Depending on the condition, style and location of your property, it could sell extremely fast in the mid $600,000's. The median sales price of a duplex in this zip code is much higher than mid $600,000's.
If you would like me to research more on a particular property you're interested in and let you know the general value, let me know and I'm happy to assist you.
Keller Williams Realty