ADU Construction in Austin, TX
A second home in your backyard - for rental income, an aging parent, or your home office. We design, permit, and build full ADUs across the greater Austin area, with one owner watching every step.
Austin’s go-to team for ADU construction.
For 14 years, HN Construction & Remodeling has built backyard homes across both metros - from compact studios to full two-bedroom units. We design, permit, and build the entire structure under one roof, with one owner accountable for the whole project.
Our process starts with a real lot evaluation: setbacks, utilities, trees, drainage, and what your jurisdiction will actually allow. Then a full design with 3D renderings of exterior and interior - sized for your lot and your use case (rental, in-law, office, or multigenerational).
Permits are our job, not yours. We submit the full package to the City of Austin (or the surrounding municipality), respond to plan-review feedback, and schedule every required inspection.
That combination of design, permitting, and construction under one team is why most of our ADU clients refer the next one.
Three things you can count on, every project.
Precision Planning
Every layout, material, and finish is finalized in 3D before demo begins. You see the project before you live it - and we don’t start swinging hammers until you’ve approved the plan.
Honest Communication
Weekly written progress updates and a single point of contact for the entire build. No “your guy’s out today” surprises and no chasing for status.
Built to Last
Materials, fasteners, and detailing chosen specifically for the Austin climate - heat, sun, summer storms, and the way Texans actually use a home.
Why ADU clients pick us over the next builder.
ADUs go sideways for a few specific reasons: a contractor who underestimates the permit phase, a design that doesn’t match the main house, surprise utility-hookup costs, and a build schedule that quietly slides three months past the original date. We built our process around those exact failure points.
Honest permit timelines (we tell you what your city is actually doing right now). Architectural design that matches your main house intentionally. Utility evaluation up front so hookup costs are in the original proposal. And a written, milestone-based schedule we update weekly - so you and your lender always know where the project stands.
Challenges we solve every week.
The six things ADU clients run into most - and how our process handles each.
Navigating Austin permit codes
We know the local rules - what setbacks apply, what counts toward FAR, what triggers extra review. We handle the entire permit submission and review process.
Matching an ADU to your main house’s style
Roof pitch, siding profile, window proportions, trim - we match the details that make an ADU feel original to the property instead of tacked on.
Utility hookups (water, sewer, electric)
Most ADUs tap into existing service with panel and lateral upgrades. Some require separate meters. We evaluate this on day one and include all hookup costs in the proposal - no surprises.
Designing for rental income vs. multigenerational use
A rental ADU and an in-law suite have different optimal layouts, finish choices, and accessibility features. We design specifically for your use case so the unit actually works for the people who’ll live in it.
Maximizing square footage on small lots
Two-story builds, garage conversions, and clever footprint choices let you get more usable space out of a tight backyard. We help you understand what your lot can actually hold.
Financing and construction timeline coordination
Construction loans and HELOCs draw on milestones. We coordinate our schedule with your lender so funds release when needed and the build doesn’t pause waiting on paperwork.
ADU configurations and features available.
- 1-bed and 2-bed layouts
- Detached and attached builds
- Garage conversions
- In-law suites
- Full kitchens
- Permit-ready plans
- Utility hookups
- Matching architectural styles
How the HN Construction ADU process works.
- 01
Free consultation & lot evaluation
What we doWe assess your lot for setbacks, utilities, access, and trees - and confirm what your jurisdiction will allow.
Timeline1 day
- 02
Design & 3D renderings
What we doYou get a full design with 3D renderings of exterior and interior, sized to fit your lot and your use case.
Timeline1 day
- 03
Itemized proposal
What we doA complete, line-by-line proposal covering design, permits, construction, and finishes.
Timeline1 day
- 04
Permits & plan approval
What we doFull permit submission to the City of Austin (or the surrounding municipality) with all required drawings.
Timeline6–8 weeks (varies by city)
- 05
Foundation & framing
What we doSite prep, foundation pour, and full framing of walls, roof, and openings.
Timeline2–3 weeks
- 06
Mechanical, electrical, plumbing rough-in
What we doAll MEP rough-in, insulation, and inspections before drywall.
Timeline1–2 weeks
- 07
Interior finish-out
What we doDrywall, flooring, full kitchen, full bath, paint, trim, and exterior finishes.
Timeline3–4 weeks
- 08
Final inspection & walkthrough
What we doFinal city inspection, certificate of occupancy, and a complete walkthrough with you.
Timeline3–5 days
Total Timeline: Most ADU projects complete in 3–4 months from contract signing to final inspection.
Proudly serving Austin & the surrounding metro.
We work across the greater Austin area. If your city isn’t listed, give us a call - chances are we cover it.
Austin Metro
| City | What we do here |
|---|---|
| Austin | Whole-home remodels, ADUs, and outdoor builds across central Austin and surrounding neighborhoods. |
| Round Rock | Kitchen, bath, and ADU projects for growing Round Rock families. |
| Cedar Park | Custom kitchens, decks, and detached ADUs throughout Cedar Park. |
| Pflugerville | Open-concept conversions, primary baths, and pergola builds. |
| Leander | Hill-country lots, ADUs, and large outdoor living projects. |
| Georgetown | Historic-home-friendly remodels and detached ADUs. |
| Lakeway | High-end kitchens, primary baths, and lakeside outdoor spaces. |
| West Lake Hills | Discreet, design-forward remodels for West Lake Hills properties. |
| Bee Cave | Modern kitchens, ADUs, and covered outdoor living for Bee Cave. |
Everything included in an HN ADU project.
Design built around how you actually live
Every ADU project starts with how you really use the space - not a templated floor plan. We sketch options, then bring them to life with 3D renderings so you can see the finished result before any work begins.
Two or three design directions, refined together until the layout, materials, and lighting all feel right.
End-to-end project coordination
One in-house team manages the entire project - design, scheduling, trades, materials, and inspections. You get one point of contact and weekly progress updates.
- Planning and 3D design
- Plumbing, electrical, HVAC
- Permits and inspections
- Custom material orders
- Install and finish work
- Integration with the rest of your home
Transparent line-by-line pricing
Our proposals are written line-by-line - every cabinet, every tile, every fixture. No vague “allowances” that balloon mid-project. The number you sign is the number you pay (changes you request are quoted in writing before they happen).
Licensed & insured craftsmen on every project
Our crew is in-house - not a rotating cast of subcontractors. Every person on your project is licensed and insured under HN Construction & Remodeling, and an owner is on-site through every milestone.
Full permit handling for Austin codes
ADU rules in Austin have changed several times in the last decade - we stay current. We handle the full permit package: site plan, architectural drawings, structural, MEP, energy compliance, and any zoning variances if needed. You sign where we point and we handle the rest.
Recognized by the platforms homeowners actually trust.
ADU construction - questions we hear most.
Do I need a permit to build an ADU in Austin?
Can I rent out the ADU on Airbnb or as a long-term rental?
How long does it take to build an ADU?
How do I finance an ADU?
Can the ADU be built to match my main house?
What about utility hookups - water, sewer, electric?
Can I use the ADU as a home office instead of a rental?
What kind of ROI can I expect from a rental ADU?
Build your ADU in Austin with the right team.
Call (512) 956-8583, email [email protected], or request a free quote - we respond within 24 hours.