Serving Central Texas
ADU Construction in Round Rock, TX
We build permitted accessory dwelling units in Round Rock from the ground up, handling zoning, design, and construction so you get a finished unit without the runaround.
adu project · Round RockRound Rock's ADU rules are a moving target, and that costs homeowners time and money
Round Rock has been actively reassessing where ADUs are permitted across the city. Older neighborhoods that were off-limits even a short time ago may now have a pathway, and the rules that apply to your lot depend heavily on when your subdivision was built and how it is zoned.
What you are living with
Homeowners who skip the zoning research upfront often spend money on design drawings for a project the city will not approve on their lot. Others wait years hoping the rules will change for their neighborhood, losing rental income the whole time. Central Texas summers are brutal, and a poorly planned detached structure without proper insulation and mechanical design becomes unusable for half the year.
What you get instead
We start every Round Rock ADU conversation by verifying what is actually permitted on your specific parcel today. If your lot qualifies, we give you a real cost range, a realistic timeline that accounts for city review, and a design that treats the Texas heat as a given rather than an afterthought. No drawings purchased before we know the project is buildable.
Our Recent Work
Accessory Dwelling Units Built to Code, Built to Last
An ADU adds livable square footage to your property without buying a new lot. Whether you need a rentable unit, a guest suite, or a place for family, we handle the full project from permit drawings to final walkthrough.
Permit-Ready Design and Drawings
We produce the architectural drawings your local building department requires, sized and formatted to meet current zoning and setback rules for your property. You do not have to coordinate a separate architect.
Foundation and Structural Work
Detached ADUs get a properly engineered foundation matched to your soil conditions. Garage conversions and attached units get any required structural reinforcement so the finished space meets code for habitable square footage.
Full Mechanical, Electrical, and Plumbing Rough-In
We rough in all systems, coordinate inspections at each required phase, and use licensed trade partners for electrical and plumbing so every system is signed off before walls close.
Insulation and Energy Compliance
ADUs must meet the same energy codes as a primary residence. We install insulation, windows, and HVAC equipment that pass inspection and keep utility bills reasonable for whoever lives in the space.
Interior Finishes and Kitchen or Kitchenette
Flooring, cabinetry, countertops, fixtures, and trim are all included in our scope. We work from a finish schedule you approve before construction starts so there are no surprises at the end.
Site Work and Utility Connections
We coordinate water, sewer, and electrical tie-ins to the existing property service, handle any required utility upgrades, and restore disturbed landscaping so the finished ADU looks intentional, not tacked on.
Why Homeowners Choose Bayside for Their ADU
ADUs involve zoning research, permit coordination, and trade scheduling that most remodelers are not set up to handle well. Here is what we actually bring to the project.
We Pull the Permit, Period
We do not hand you a permit application and wish you luck. Our team prepares the drawings, submits to the building department, responds to plan review comments, and tracks the approval through to issuance. You stay informed without having to manage the process yourself.
Design-Build Under One Roof
Design and construction are handled by the same company, so the drawings we produce are priced by the crew that builds them. There is no gap between what the designer planned and what the builder can actually execute or afford to include.
Over 500 Projects Completed, Insured and Bonded
We carry full general liability insurance and are bonded on every project. With more than 500 completed projects behind us, we have encountered and solved the structural surprises, utility conflicts, and zoning edge cases that come up on real properties.
Fixed Scope Before We Break Ground
We do not start construction on a vague allowance budget. Before any work begins, you have a signed contract with a defined scope, a finish schedule you reviewed, and a timeline that accounts for permit lead time. Change orders happen when the scope changes, not because we underquoted to win the job.
How an ADU Project Works with Bayside
Most homeowners have never built an ADU before. Here is the straight sequence from your first call to handing you the keys.
Step 1: Site and Zoning Review
We start by reviewing your property, lot dimensions, existing structures, and local zoning rules to confirm what you can build and where. This step identifies setback requirements, size limits, utility connection points, and any restrictions that affect your options before you spend anything on design.
Step 2: Design, Pricing, and Contract
We develop a floor plan and scope of work based on what your site allows and what you need the space to do. You review the drawings, the finish schedule, and the project cost before signing. Nothing moves to permit submittal until you have approved the full plan.
Step 3: Permitting and Pre-Construction
We submit your permit package, respond to any plan review comments, and schedule trade partners once approval is in hand. Permit timelines vary by jurisdiction, and we set your expectations at the start based on current local lead times so the wait is not a surprise.
Step 4: Construction, Inspections, and Closeout
We build to the approved plans, schedule each required inspection, and do not close up walls until the rough-in phases are signed off. At completion, we walk the project with you, address any punch-list items, and hand you the final certificate of occupancy so the unit is legally habitable.
ADU Construction in Round Rock, Texas
Round Rock is in an active period of rethinking where ADUs are allowed. Right now, city rules permit ADUs in downtown Round Rock and in newer neighborhoods built in recent years. Older established neighborhoods face more restrictions. Before you plan a budget or timeline, you need to know which zone your lot falls in. We sort that out before any design work begins.
Permits & review
Round Rock requires city approval for ADU construction and runs its own permit process separate from Austin's. Permit costs in Round Rock typically land in the $1,000 to $5,000 range depending on project scope. You will need to apply through the city's single-family addition permit pathway. Approval timelines vary, and the city has been actively revisiting ADU policy as part of its 2030 housing plan, so rules that applied a year ago may have shifted. We pull the current requirements for your specific parcel before we quote.
Housing stock
Round Rock grew fast from the 1980s through the 2000s, which means a large share of the housing stock sits on suburban lots sized for a single home and a garage. Setbacks, lot coverage limits, and utility connections are the common friction points on those parcels. Newer subdivisions built in the last few years were designed with ADU allowances in mind. Older neighborhoods downtown also have a pathway. Everything in between requires a closer look at the specific zoning designation.
Areas we serve
We serve Round Rock and the surrounding Central Texas corridor including Cedar Park, Pflugerville, Hutto, and Georgetown. If you are within a reasonable drive of Round Rock, call us and we will tell you straight whether we can take your project.
Common questions
How much does an ADU cost in Round Rock, Texas?
A detached ADU in Round Rock typically runs between $120,000 and $300,000 depending on size, finishes, and site conditions. Permit fees alone generally fall between $1,000 and $5,000. A garage conversion costs less because the structure is already there, but you still need electrical, plumbing, insulation, and a separate entrance. Get a detailed scope in writing before anyone quotes you a number.
Are ADUs allowed everywhere in Round Rock?
Not yet. As of now, Round Rock permits ADUs in downtown neighborhoods and in newer subdivisions built in the last several years. Many older, established neighborhoods are still excluded under current zoning rules. The city is actively reviewing its ADU policy as part of long-term housing planning, so rules may expand. We pull your address and confirm zoning eligibility before we talk design or budget.
What is the cheapest way to build an ADU in Round Rock?
Converting an existing attached or detached garage is almost always the lowest-cost path because you skip foundation and framing. After that, a prefabricated or modular unit can reduce labor costs compared to full custom construction, though you still pay for site prep, utilities, and permitting. The real savings come from getting the permit right the first time and not redesigning mid-project.
What are the real disadvantages of building an ADU?
Upfront cost is the obvious one. Beyond that, Round Rock has a narrower set of approved zones than Austin, so your lot may simply not qualify right now. HOA rules can also prohibit ADUs even where the city allows them. Adding a rental unit increases your landlord responsibilities, insurance considerations, and utility setup. None of these are reasons to skip an ADU, but they are things to sort out before you break ground.
How long does it take to build an ADU in Round Rock?
From signed contract to move-in, plan on 6 to 12 months for a detached custom ADU. Permitting in Round Rock typically takes 4 to 10 weeks depending on plan review volume. Construction on a straightforward 400 to 600 square foot unit runs roughly 3 to 5 months once permits are in hand. Garage conversions are often faster, sometimes 2 to 4 months total.
Do I need a separate permit for an ADU in Round Rock?
Yes. Round Rock requires a building permit for any new ADU or garage conversion. The application goes through the city's Development Services department. You will need site plans, floor plans, and proof that your lot meets current ADU zoning requirements. We prepare and submit all permit documents as part of our process.
Can I rent out my ADU in Round Rock?
Yes, if your lot is in a qualifying zone and the unit passes final inspection, you can rent it as a long-term rental. Short-term rental rules in Round Rock are separate and more restrictive. Check current city ordinances before planning an Airbnb-style setup. We build the unit to meet all habitability and code requirements, but rental licensing and tax registration are steps you handle after the project closes.
Keep exploring
Other services in Round Rock
Bathroom Remodeling→Kitchen Remodeling→Home Renovation→Home Addition→Home Builder→
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