Before the doors open, build a page for the new office on your existing site, set up a separate Google Business Profile once the office is real and staffed, list the new address consistently in directories, and plan how you will collect reviews from clients served there.
Start with your website, not a new one. A second domain splits your authority and makes the new office start from zero. Add a location page for the new office with its address, hours, phone number, the attorneys who work there, practice areas handled at that location, and directions. Link it from your main navigation and footer. If the office will focus on a different practice area than your main location, say so plainly so both Google and potential clients understand what happens there.
The Google Business Profile for the new office should go live once the space is real, signed, and staffed during the hours you will post. Google may ask for video verification showing signage and the office itself. Use a local phone number for that office rather than your main line, and pick categories that match what that office actually does. Then update the big directories, your state bar profile, Avvo, Justia, and any local chamber listing with the same name, address and phone format you use on the site.
Reviews are the piece firms forget. A new profile with zero reviews will sit below competitors for a while, so plan from day one to ask clients served out of that office, using a review link specific to that location. Announce the opening with a short news post on your site and in the local paper if you can. If you want this rollout handled end to end, it falls inside our monthly plan, and we can map out the steps with you before the lease is signed.
Send the site over. We will tell you what is broken, what you could rank for, and whether AI search knows you exist. No charge and no pitch deck.