Web Design · San Marcos, TX
From the square to the river to the I-35 corridor, San Marcos is competitive, and a great website is how you stand out. We build fast, modern sites for San Marcos businesses designed to convert, so more local searchers become paying customers.
The corridor is crowded and growing. A site that just 'looks fine' won't win the click, or the customer.
San Marcos is growing fast and crowded with options. If your site doesn't grab attention and rank, customers scroll right past to someone who does.
Your customers are searching on their phones between classes, errands, and road trips. A slow or clunky site loses them in seconds.
Plenty of San Marcos businesses have a decent-looking site that never actually brings in work. Pretty isn't the same as profitable.
There's a Better Way
We design fast, conversion-focused websites for San Marcos businesses, built to rank on Google and turn visitors into calls and bookings, with a local SEO foundation and a real team behind it.
What You Get
A clean, professional site that loads fast and makes a strong first impression.
Every page is designed to turn visitors into calls, leads, and booked work, not just to look pretty.
Looks and works great on every phone, where most of your customers will find you.
Built from day one to help you show up when nearby customers search on Google.
Need a change? We handle it, or make it simple for you, no tech headaches.
We're still around long after your site goes live, the same people who built it.
Want the full rundown? See our Web Design & Website Rescue page.
Why San Marcos Businesses Choose Us
Behind ADD is just the two of us, Preston and Brianna. We come from a software and QA background, so we build sites that are fast and properly tested, and we treat your project like it matters, because to us it does.

We're based in Bandera, so we know your market and can meet in person whenever you'd like.
When you call or email, you get one of us, usually the same day. You always know who's working on your site.
We come from a software-QA background, so everything we build is tested hard before it goes live.
We measure success by your calls, leads, and booked jobs, not by how the dashboard looks.
How It Works
We learn your business and goals and audit your current site, free.
We map out the pages and design a site built to convert, refined with your feedback.
We build it fast and test it hard, so it works flawlessly on every device before launch.
We launch on fast, secure hosting and stay on call to keep it bringing in customers.
Don't Just Take Our Word For It
+40%
more business, year over year, after a redesign.
"They redid my website and my business has increased about 40% over the previous year, I'm showing up a lot more in searches."
Sheila Carmon · Google review
"Honest and actually care about my business being successful. If you need someone who takes the time to understand your needs, they are the best."
Lars G · Google review
Local & Invested
San Marcos sits right on the I-35 corridor between Austin and San Antonio, one of the fastest-growing stretches in Texas, which means real competition for every customer. A fast, modern website is how local businesses stand out, whether you serve the downtown square, the university crowd, the river tourists, or the surrounding New Braunfels, Kyle, and Buda areas.
Every San Marcos website we build includes a local SEO foundation, so you start showing up when nearby customers search for what you do. We work with businesses up and down the corridor, in person or remotely, and we build with a real software-QA background, so your site is fast, reliable, and tested before it ever goes live.
Also serving nearby:
It depends on what your business needs, so we scope it around you and give you a clear price up front. Book a free consultation.
Yes. Every site includes a local SEO foundation, and we offer ongoing local SEO so you climb the rankings and the map pack in a competitive market like San Marcos.
Most San Marcos sites take a few weeks from kickoff to launch, depending on size and content. We'll give you a clear timeline up front.
We do, along with San Marcos we serve New Braunfels, Kyle, Buda, Wimberley, and the greater San Antonio and Austin corridor, in person or remotely.
Absolutely. If your San Marcos site is slow, dated, or not converting, we can redesign it to load fast and turn more visitors into customers.
Our Work
From pest control to HVAC to custom homes, here's a look at a few of the businesses we've helped. Tap any one to visit the live site.






Web Design · San Marcos, TX
Book a free consultation, including a free website audit. We'll map out exactly how to bring you more customers, and you'll walk away with a clear plan whether you hire us or not.