Unique business location in the center of Old Town Tustin.


The Cornerstone building is located in the heart of Old Town Tustin, at the intersection of Main Street & El Camino Real.  The iconic architecture is one of Old Town Tustin's finest and is featured in many publications, brochures and art work.  Historic Old Town Tustin offers quaint shops and restaurants within a short walking distance from this unique location.  Additional features and benefits include excellent street visibility and signage opportunities, renewable solar energy, freeway close to I-5 and SR-55, and competitive lease pricing.



More than just a place of business.


The Cornerstone building is home to a diverse group of business owners who create a friendly on-site community and it's location downtown provides many off-site perks within walking distance.




IN-HOUSE Coffee Roasters

Kean coffeehouse provides unique coffee drinks made from beans roasted in-house alongside sandwiches, pastries, scones and donuts.




Italian, health-conscious, vegan, Mexican, seafood, steak, sushi, kombucha, burgers & fries, and a micro brewery are just some of the diverse culinary options just steps from the Cornerstone building. 


historic to hip shops & services

Old Town Tustin offers a wide range of shopping & service options:  antiques, consignment stores, clothing, hair salon, photographers, music and painting classes, weekly farmers market, Armstrong Gardens, Turkish spices & products, etc.  Stroll into Spice & Tulips and sip a hot cup of Turkish coffee!

building across from ours.JPG

US Postal Service

full service us post office

Mrs. B's Consignments is a USPS Approved Postal Provider, located just steps from the Cornerstone building.  Pay standard rates for all services including: stamps, registered mail, priority mail, certified mail, express mail, shipping packages and other special services. 

A place in history.


Old Town Tustin's commercial district dates back to the 1880's and attracts many visitors from the surrounding historic neighborhoods and beyond.  Your new business location awaits.  Create your place in history today.