Compared to the rest of the Metropolitan Los Angeles market, the Westminster submarket has less expensive rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 1 listings have been posted online, which means new availabilities most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,350 sqft. Most properties in this region are around 1 floors. Most buildings in this area were built in 1973 and are Class A.