Commercial Office Space Leasing Contract -Lawyer needed?

[Emma Ptrank]

We have a commercial office building and our real estate agent plans on using the standard lease form to compose the lease. However he says we should have a lawyer to review it and add any addendums if necessary. 

My question to you all: Any southern California real estate lawyer recommendations who do this kind of work? Also what is the usual going rate for such work? How much should we be spending on lease reviews for landlords if we are using the AIR standard form? 

Thank you in advance for your thoughts on this!