What Is Happening at 409 N. Mays St.?

State records give us a clearer picture of the project.

The Texas Department of Licensing and Regulation lists a $500,000 renovation at 409 N. Mays St. covering approximately 2,812 square feet. The work includes remodeling the existing building for restaurant dining space and adding a kitchen, tortilleria and storage.

The state filing lists construction running through early December 2026.

So, What Exactly Is Nixtamal?

If “nixtamal” isn't already part of your dinner vocabulary, Casa Masa may give you a reason to learn it.

Nixtamalization is a traditional process in which dried corn is cooked and soaked in an alkaline solution before being washed and ground into masa. It has been used in Mexican and Central American cooking for centuries.

For diners, the important part is considerably less technical: fresh masa becomes the foundation for tortillas and other corn-based foods rather than relying entirely on commercially produced tortillas.

Casa Masa describes its concept as centered on real nixtamal, handmade tortillas and traditional Mexican flavors.

That makes the tortilleria more than an interesting piece of kitchen equipment. It is central to what the restaurant says it wants to be.

Another Change Along Downtown Round Rock

The location adds another layer to the story.

Casa Masa is moving into the former Wine Sensation space along North Mays Street, adding another new food concept near Round Rock’s historic downtown core.

That matters because downtown restaurant openings do more than add another place to eat. They change how residents use the district—whether people come downtown for lunch, stay for dinner, walk between businesses or discover another local shop while they’re there.

Casa Masa’s combination of a specialized food process and an existing downtown building makes this one worth watching as construction continues.

When Will Casa Masa Open?

Casa Masa’s official website currently says “coming soon,” and the state construction record lists a projected completion date of Dec. 2, 2026.

That is not the same thing as a confirmed restaurant opening date, so Round Rock Shout Outs isn’t inventing one.

We’ll update the story when Casa Masa announces when Round Rock can actually walk in and order.

FAQ

Where is Casa Masa in Round Rock?
Casa Masa is being developed at 409 N. Mays St., Round Rock, TX 78664.

Is Casa Masa open yet?
No confirmed opening has been announced. Its official website currently describes the restaurant as coming soon.

What will Casa Masa serve?
The restaurant says its concept will focus on Mexican food made around nixtamal and fresh masa, including tacos, handmade antojitos and tortillas, with coffee during the day and cocktails and additional dinner offerings in the evening.

Will Casa Masa make its own tortillas?
The project includes an in-house tortilleria, and Casa Masa says handmade tortillas and fresh masa are central to the concept.

 Find Casa Masa in the RRSO Directory