THE RISE OF ACCESSORY DWELLING UNITS IN TEXAS

SERVING AUSTIN, SAN ANTONIO, HOUSTON
And Surrounding Areas

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Accessory dwelling units (ADUs) are smaller, independent living spaces on the same lot as a primary home, and ADU Builders can construct them as an attached addition, a conversion within the home, or a separate structure like a backyard cottage or garage apartment (Local Housing Solutions’ ADU policy overview).

Common ADU setups homeowners consider

Detached unit: A separate, stand-alone structure in the yard.
Attached addition: A new space connected to the main home, with its own entrance.
Garage conversion: A reworked garage or outbuilding turned into living space.
Interior suite: A private area inside the home with a separate entry and key features.

Many plans also include storage and outdoor privacy.

Why more Texas homeowners are paying attention

Texas has been adding people faster than any other state in recent years, and that growth is changing what many households need from their properties (The Texas Tribune’s coverage of Texas population growth). One recent benchmark: the U.S. Census Bureau estimates Texas added 391,243 residents from July 1, 2024 to July 1, 2025, bringing the state to 31,709,821 people (U.S. Census Bureau Vintage 2025 estimates press release).

For many homeowners, ADUs are about flexibility. A detached unit can support multigenerational living. An attached unit can create privacy for a family member. A conversion can turn existing space into a comfortable place for guests or work.

Regulations are changing, but local rules still matter

A major recent shift is Texas Senate Bill 673, which limits certain city and county restrictions on ADUs and sets a 60-day approve-or-deny timeline for many permit applications handled through ministerial review (Texas Legislature bill text for SB 673).

Even with statewide limits, your project still depends on local zoning and building rules. Setbacks, height limits, floodplain standards, parking, and utility requirements can vary by community. Rules vary. Put another way: statewide rules set the floor, and local details shape what fits your lot.

A quick example of cities updating housing rules

Some cities are updating land development rules to allow more housing options on existing neighborhoods. Austin’s HOME amendments, for example, aim to add more housing types and increase supply within areas zoned for single-family homes (City of Austin HOME Amendments overview).

You do not need to live in Austin to learn from this. When rules shift, the changes show up in what can be permitted on a typical residential lot and how a city processes reviews.

The homeowner checklist before you design anything

These early checks prevent the most rework later:

Zoning and use: Is an ADU allowed where your home sits today?
Lot constraints: Review setbacks, easements, height limits, lot coverage, and protected trees.
Access and safety: Confirm driveway or walkway access and any emergency access needs.
Utilities: Identify where water, sewer, and electric connections can run.
Private restrictions: Check deed restrictions and HOA rules.

If you’re unsure where to start, begin with your city or county planning page before you finalize a layout.

MAJOR REASONS OF THE RISE OF ADU:

A simple ADU process many Texas projects follow

A clear process helps from the first sketch to the final inspection.

1) Feasibility

Match your goals to your site: buildable area, access, utilities, and the unit type that fits.

2) Design and plans

Plans should show the layout, the lot placement, and the key details reviewers and inspectors will look for.

3) Permitting

Permitting is easier when your application is complete. Gather what your jurisdiction asks for, then submit as a clean package.

4) Construction and final inspections

Schedule inspections as work is completed. Staying aligned with approved plans helps reduce surprises.

Common mistakes to avoid

Designing first and checking rules later
Forgetting utilities until the plan is “done”
Assuming a neighbor’s approval guarantees yours
Skipping deed or HOA review

When you are ready, get the right team in place

An ADU is a small home, not a small decision. The right team can help confirm what your site allows and manage the build with clear steps.

CTA: Looking for a ADU Builder?

If you’re thinking about an ADU and want clear next steps, our team can help you move from “is this possible?” to a plan that fits your property and your goals. Book our ADU Builders to talk through your lot and the simplest path to an approved build.

FAQ

1) What counts as an ADU in Texas?

An ADU is a separate living space on the same lot as your main home, built for independent day-to-day living. It may be attached, detached, or created from existing space, depending on what your property allows.

2) Do the new Texas rules mean ADUs are allowed everywhere?

State law limits certain local barriers, but zoning and building rules still apply locally. Always confirm what your city or county allows on your specific lot.

3) Can an HOA stop an ADU?

Sometimes. Private restrictions like deed rules and HOA guidelines can apply even when local zoning would allow the project.

4) How long does permitting usually take?

Timelines vary by jurisdiction and by the quality of the application. A complete, code-ready submittal is one of the best ways to reduce back-and-forth.

5) What should I check first if I’m just starting?

Start with zoning and setbacks, then confirm utilities and any private restrictions. Once those are clear, you can choose the unit type and begin design.

Custom Design Packages Tailored to Your Project

Experience a design process that’s truly personalized. At Small House Solutions, our custom design packages are crafted to fit your specific project requirements. We offer a wide range of 3D modeling and rendering services, allowing you to visualize your new space from every angle before construction even begins.

Our comprehensive, full-service approach ensures a seamless journey—from your initial vision, through the design and build phases, to the final development. We manage every aspect of your project under one roof, providing you with peace of mind and a single point of contact. Ready to bring your dream space to life?

Let’s start designing, Today!

Custom home Design Packages Tailored to Your Project

WHAT OUR CUSTOMERS THINK ABOUT US

Real feedback from our valued customers

Peter Ruehlen

August 2023

Amazing company all around. Hands down some of the best contractors I have ever worked with. High quality top tier construction, incredible management and subs.

Brendan Turrell

February 2024

The project was done ahead of schedule and exceeds our expectations. I have already recommended this company to friends and will use them again whenever I have a construction project.

David Ferragut

August 2023

The team was so responsive and just overall great partners. If you are looking to add more living space to your property, highly recommend!

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