We’ve officially rebranded! AC Cornerstone Building is now Outlaw Ridge Construction!
We’ve officially rebranded! AC Cornerstone Building is now Outlaw Ridge Construction!
Need more space but don’t want to build out or move? At AC Cornerstone Building, we specialize in garage conversions in Austin, TX that turn underused square footage into comfortable, fully functional living space. Whether you want a home office, guest suite, rental-ready ADU, or personal gym, we help you reimagine your garage with professional design, quality construction, and seamless integration into your home.
We make garage conversions smart, stylish, and stress-free—from concept to completion.
Homeowners in Austin convert garages to:
✅ Add a guest bedroom or in-law suite
✅ Build a home office for remote work
✅ Create a short- or long-term rental space
✅ Design a studio, gym, or media room
✅ Expand for multigenerational living
✅ Avoid the cost and hassle of moving
Garage conversions are typically faster and more cost-effective than building a new addition because the walls, foundation, and roof already exist. With Austin’s growing population and rising property values, converting your garage is also a smart investment in your home’s resale potential.
Proud member of the Leander Chamber of Commerce.
Every conversion starts with your goals. Do you want a space that feels private and independent? A cozy extension of your current home? We’ll help you figure out what makes sense and how to make it work within your existing structure.
Popular garage conversion options:
Add sleeping space with proper insulation, lighting, and ventilation
Install full or half-baths with professional plumbing upgrades
Create a fully independent unit for rental income or extended family
Quiet, productive space with built-in desks, outlets, and soundproofing
Install durable flooring, mirrors, and ventilation for movement-focused rooms
Comfortable, creative spaces for entertainment or family time
At AC Cornerstone Building, we make converting your garage a smooth, well-managed experience. We’ve handled everything from simple interior upgrades to full-scale ADU conversions, and we bring that experience into every step of your project.
Here’s how our process works:
We walk through your garage with you, talk about your goals, and assess what’s possible based on your home’s structure, utilities, and city zoning.
Whether you bring your own designer or need help creating a plan, we’ll finalize the layout, materials, and must-have features.
Garage conversions must meet City of Austin building codes, and we handle all the necessary permitting and inspections to ensure your space is legal and safe.
Our crew handles everything—framing, insulation, plumbing, electrical, drywall, flooring, HVAC, windows, and finishes. We keep your property clean, protected, and disruption minimal.
Once construction is complete, we go over everything with you, answer any questions, and ensure the converted space is move-in ready.
A successful garage conversion shouldn’t feel like an afterthought. Our goal is to make it feel like the new space was always meant to be part of your home.
We focus on:
Whether you want it to feel open and modern or cozy and classic, we’ll help you get the look and function you’re after—without cutting corners.
From single-car garages converted into home offices to detached two-car garages turned into rentable guest houses, we’ve done it all. Our clients love the freedom and value these conversions bring—and how well the new space fits into their lives.
Want to see what we’ve done before? Head over to our Our Work page for project photos, stories, and ideas for your own transformation.
AC Cornerstone Building proudly serves homeowners throughout Austin and the broader Central Texas region. Whether you’re in the city or a nearby community, we bring reliable, high-quality remodeling services right to your door.
If you’re within driving distance of Austin, chances are we work in your neighborhood. Just reach out and ask—we’re happy to help.
If you’re ready to unlock the potential of your garage, AC Cornerstone Building is ready to help. With hands-on experience, clear communication, and craftsmanship that lasts, we make it easy to reimagine your space—and even easier to enjoy the results.
Let’s talk about your project. Use our simple Contact Us form to schedule your free in-home consultation. We’ll help you explore what’s possible and take the first step toward transforming your garage into a space that truly works for you.
