A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable ADU Builders Across Shady Hollow
Adding an ADU in Shady Hollow usually costs between $185,000 and $410,000 depending on whether you go prefab, custom, or convert an existing garage. The biggest variable isn’t square footage. It’s what we find when we open up a home built in the 1970s, 80s, or 90s and start tying in electrical, plumbing, and framing. We’re Seedling ADU Austin, and we build detached ADUs, garage conversions, and home additions across Shady Hollow with a process built around one thing: written pricing before any work starts. Call (254) 615-3842 to schedule a free estimate, and you’ll know exactly what your ADU will cost before we touch a single wall.
Why Seedling ADU Austin Is Shady Hollow’s Preferred ADU Builders Company
Shady Hollow isn’t a subdivision where you can drop a stock ADU plan onto any lot and start digging. The one- to three-acre wooded lots, mature live oaks, and septic systems change everything about how an ADU gets sited and built here. We’ve worked on ADU projects throughout Shady Hollow West, along Brodie Lane, and in the neighborhoods off Slaughter Lane where lots back up to oak canopy. That local familiarity means we walk onto your property already thinking about Travis County setback rules, tree protection zones, and drainage patterns on clay soil.
Ben Ortega leads our team, and he’s the person you’ll talk to when you call. Not a sales rep. The person responsible for your project. Our Shady Hollow customers consistently mention two things in their feedback: the written price that didn’t move, and the crew that left the property clean every single day. We hold every job to the Cedarwell Care Promise: shoe covers and drop cloths inside your home, pet-safe products where there’s a choice, and a photo of the clean-up sent to you before the crew leaves. Every visit. Included, not optional.
When you call us from Shady Hollow, a live person answers. Not a voicemail tree. During an active build, that matters because questions come up at odd hours, and you deserve an answer from someone who knows your project.
ADU Plans in Shady Hollow
ADU Plans in Shady Hollow start with something most builders skip: a careful look at what your lot will actually allow before you spend money on design. Travis County’s environmental and wastewater regulations govern where a second dwelling can sit relative to your septic system, your well, and your property lines. We start there. Then we look at what’s behind the walls of your existing home, because whatever we find changes the plan.
Septic, Well, and Tree Constraints
Your septic drain field has legal setbacks, and so does your well. On a one-acre lot with mature oaks, those setbacks can shrink your buildable area fast. We flag this in the planning phase, not after you’ve paid for a design that won’t pass county review. Mature live oaks protected by county ordinance often require a tree survey, and that survey can force creative foundation designs to avoid damaging root zones.
Written Plans, Written Prices
We don’t sell a design and then surprise you with the price to build it. Our planning process produces a written scope of work with allowances for the things we can’t see until walls are open: outdated wiring, undersized framing, failed waterproofing. You approve every dollar before it’s spent. The plan and the price move together.
ADU Contractor in Shady Hollow
ADU Contractor in Shady Hollow means something specific to us. It means the company that ties your new ADU into a 1980s home without turning your kitchen into a construction zone. Our crews are background-checked and uniformed. They wear shoe covers inside your home. They keep tools quiet near bedrooms, and they respect your family’s schedule, especially during school hours and nap times.
Inspection-First Tie-Ins
Before we quote your ADU tie-in, we inspect. We look at your electrical panel, your framing, your existing waterproofing. Many Shady Hollow homes are running original panels that are already maxed out. Connecting an ADU to that panel without upgrading it will trip breakers constantly. We catch that before it’s your problem.
Allowances, Not Surprises
Every Seedling contract includes written allowances for the conditions we expect to find in a 1970s – 1990s Shady Hollow home: subpanel replacement, rim joist repair, waterproofing fixes, code-triggered upgrades. If we find something outside the allowance, we price it in writing and get your approval before we do the work. The price you approve is the price you pay. That’s the whole point of working with ADU Builders who treat your budget like it matters.
Trusted Brands We Service in Shady Hollow
We work with the prefab and modular brands serious ADU buyers research before calling anyone: Abodu, Cover, Dvele, and Mighty Buildings. Each has different strengths for Shady Hollow’s lot conditions. Cover’s panelized system often works well on wooded lots where a crane can’t reach far from the road. Abodu units can sit on pier foundations that minimize root disturbance under oak trees. We know what Shady Hollow customers need from these systems because we’ve sited them here. Prefabricated doesn’t mean cookie-cutter, and we’ll help you choose the right product for your lot, not just the one that’s easiest for us to sell.
Common ADU Builders Problems We See in Shady Hollow Homes
- Outdated wiring and maxed-out subpanels. Homes built in the 70s and 80s often have original panels that can’t handle an ADU’s load. A permit triggers a code upgrade, and we build that into your written price before we start.
- Rim joist and framing damage where the addition ties in. Termite damage and moisture intrusion are common in older Shady Hollow homes with original siding and poor drainage. We inspect for this before we quote.
- Failed waterproofing on existing foundations. Clay-rich soil expands and contracts with Shady Hollow’s wet-dry cycles. When we open walls to tie in an ADU, we often find waterproofing failures that need repair before we close things back up.
- Septic and well setbacks that limit ADU placement. Many lots here aren’t on city sewer. Travis County’s rules about how close a dwelling can sit to a septic field or well can rule out the obvious building site and force a different location entirely.
Pricing for ADU Builders in Shady Hollow, TX
Here are the ranges we see for Shady Hollow specifically. A prefab ADU installation from Abodu or Cover typically lands between $185,000 and $285,000 once site work, foundation, and utility tie-ins are included. A custom detached ADU runs $260,000 to $410,000 depending on size, finishes, and what we find when we open up your existing home. Garage conversions sit between $120,000 and $210,000. A junior ADU inside your existing footprint can run $90,000 to $160,000. What moves these numbers in Shady Hollow more than anywhere else is the condition of the home we’re tying into and the site constraints on your particular lot: septic setbacks, protected oaks, drainage on clay soil. Call (254) 615-3842 for a free estimate with a written price before any work begins.
We Also Serve Cities Near Shady Hollow
Our crews serve the whole Austin metro area. We work on ADUs in Austin, Round Rock, Leander, and Cedar Park. If you’re in Shady Hollow or any surrounding community, the same written-pricing process applies. The same crew standards apply. The same ornery live oaks don’t, but the care does.
Serving Shady Hollow, TX - Our Local Coverage Area
We’re based in the Shady Hollow area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Builders in Shady Hollow
Travis County requires minimum setback distances between any dwelling and your septic drain field, septic tank, and well. On a one- to three-acre Shady Hollow lot, those setbacks can eliminate the most obvious building site. We map your septic and well locations during the planning phase and confirm the buildable area before you pay for a design. Call (254) 615-3842 and we’ll walk your lot with you, no charge.
In most cases, yes. Travis County protects mature live oaks, and any construction within a tree’s critical root zone typically requires a survey and a protection plan. We coordinate with the arborist and adjust foundation designs to avoid root damage. Sometimes that means pier foundations instead of slab. Sometimes it means moving the ADU twenty feet. We figure that out early, not mid-permit.
We expected it and wrote an allowance for it. That’s the short answer. Before we ever cut drywall, we inspect your panel and visible wiring. The contract includes a written electrical allowance for the conditions common in 1970s – 1990s Shady Hollow homes: subpanel replacement, new home runs, bringing the connection to current code. If we find something outside that allowance, we stop, price it in writing, and get your approval before proceeding. Call (254) 615-3842 to see what this looks like in a real contract.
Same process as electrical: it’s anticipated, it’s allowed for, and nothing extra gets billed without your written approval. Failed waterproofing and rim joist damage are common in Shady Hollow homes where clay soil and heavy rain cycles have stressed foundations for decades. We inspect before we quote, write allowances into the contract, and if the discovered damage exceeds the allowance, you get a written price and the final say before we do the work.
Mostly, yes, but they still need site-specific engineering. Pre-approved plans from Cover and Abodu save time on design review, but Travis County cares about your specific lot, not the plan’s pre-approval. We’ve handled pier foundations for Abodu units that sit lightly over root zones, and we’ve adjusted Cover panelized builds to respect septic setbacks. The brand plan gets you a head start. The site work is where Shady Hollow’s constraints actually bite, and that’s where we earn our keep. Call (254) 615-3842 for a free estimate.
Contact Seedling ADU Austin for Your Shady Hollow ADU
If you’re thinking about an ADU, garage conversion, or home addition on your Shady Hollow property, start with a conversation. Ben and the team will walk your lot, talk through septic and tree constraints, and give you a written price before any work begins. The inspection is free. The estimate is free. And every job we build is backed by our 365-Day Done Right Promise: if it’s not done right, we make it right. Call (254) 615-3842 today.
Written by Ben Ortega, Owner at Seedling ADU Austin, serving Shady Hollow and the greater Austin metro.
