On average, listings lease in the $30's per square foot per year. The Concord region is seeing a a boost in rates. In the last 3 months, the median rate rose $2 per sqft per year. That's a 8% rise in rent.
Compared to the rest of the East Bay market, the Concord region has smaller rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 78 listings have been made available, so you'll want to check back regularly for new listings. About 6% of the office spaces in the Concord are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 2,910 sqft, there are still 0 new listings below 2,000 sqft. Most buildings in this market are close to 2 floors. Most buildings in this region were built in 1984 and are Class A.