In the last 90 days, 1 listings have been posted online, which means office spaces most likley are going fast. You'll want to be prepared to make an offer immediately. About 100% of the available space in the Larchmont are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 800 sqft. Most buildings in this market are close to 2 stories. Most buildings in this market were built in 1971 and are Class C.