A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Cedar Park, TX
Cedar Park homeowners adding an ADU, garage conversion, or home addition are working with tighter lot lines, newer housing stock, and a patchwork of city and HOA rules that change what gets built and where. Most homes here date from the 1990s onward, with compact lots in master-planned communities that leave little room for error on setbacks and drainage. Summers run hot and humid, winters bring occasional freezes, and flash flooding is a real consideration for any foundation. If you’re weighing an ADU in Cedar Park, call (254) 615-3842 and we’ll walk you through what your specific lot will actually allow.
Why Cedar Park Homes Are Different
Cedar Park sits in a strange middle zone: technically inside the extraterritorial jurisdiction of Austin, but governed by its own building codes. That split means a permit that looks straightforward can stall while both city and county offices sort out whose approval actually matters. We coordinate that early, before plans are drawn, so the project doesn’t lose weeks to paperwork confusion.
The housing stock adds another layer. Most Cedar Park homes were built after 1990, which means foundations are generally sound, but lot dimensions in communities like Ranch at Brushy Creek, Forest Oaks, and Cypress Canyon are tighter than what you’ll find in older Austin neighborhoods. A detached ADU needs to respect side-yard setbacks and HOA design standards that some builders never check until the plan is rejected. Our process starts with a lot-specific review, including HOA restrictions where they apply, so the first design we show you is one that can actually be approved.
Climate shapes the build itself. Cedar Park’s summers demand real HVAC capacity, and the envelope has to be insulated well enough that a 350-square-foot unit doesn’t turn into an oven by August. Flash flooding in low spots means foundation and drainage planning is not optional, and winter freeze risk means every water line gets protected from the start.
Our Main Cedar Park Services
Cedar Park homeowners call us most often about three projects: adding square footage to the main home, converting an existing garage into living space, and building a detached ADU from the ground up. Each has its own Cedar Park page below, but all three carry the same written price before work starts and the same 365-Day Done Right Promise.
Home Addition Contractor in Cedar Park
A home addition in Cedar Park usually means a primary suite extension, a second living area, or a dedicated home office that doesn’t force the family to share a single desk. The challenge here is matching a 1990s or 2000s home’s roofline and exterior finish without making the new space look bolted on. We work with James Hardie materials so the siding, trim, and color palette blend with the original structure, and we coordinate with the city and county on setback requirements before finalizing any floor plan. For the full scope and local process, see our Home Addition Contractor in Cedar Park page.
Garage Conversion Contractor in Cedar Park
Garage conversions in Cedar Park are popular because many lots don’t leave room for a detached ADU, but the attached garage already sits inside the structural envelope. The job means replacing the garage door with an insulated wall, upgrading the slab to meet living-space standards, and running HVAC, electrical, and plumbing lines that were never designed for daily occupancy. HOA restrictions often dictate what the front elevation can look like after conversion, and we handle that review before you commit to anything. See the full breakdown on our Garage Conversion Contractor in Cedar Park page.
ADU Builders in Cedar Park
A detached ADU in Cedar Park gives you a true second home on your lot: separate entrance, own kitchen and bath, privacy for aging parents or adult children. The practical questions here are lot coverage, setback compliance, and drainage, because many Cedar Park backyards slope gently toward a drainage easement. We work with prefab brands like Abodu and Dvele when a faster, factory-built shell fits the site, and we handle every permit, inspection, and HOA coordination step in between. For the full ADU process and what to expect on your lot, visit our ADU Builders in Cedar Park page.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Cedar Park
We work directly with Abodu, Dvele, and Cover for prefab and modular ADU shells, and we use James Hardie siding and trim materials on additions and conversions throughout Cedar Park. These are the brands our homeowners already research before calling us. We keep samples available for review in person, so you can see panel finishes and siding colors before choosing. Browse the full product lineup on our brands page.
Pricing for ADU Company in Cedar Park, TX
| Service | Typical range in Cedar Park |
|---|---|
| Home addition (primary suite, 300 – 400 sq ft) | $90,000 – $140,000 |
| Home addition (second living area, 400 – 600 sq ft) | $120,000 – $180,000 |
| Home addition (home office, 150 – 250 sq ft) | $45,000 – $75,000 |
| Garage conversion (single-car to studio) | $55,000 – $85,000 |
| Garage conversion (two-car to one-bedroom) | $75,000 – $110,000 |
| Detached ADU (studio, under 400 sq ft) | $120,000 – $170,000 |
| Detached ADU (one-bedroom, 400 – 600 sq ft) | $160,000 – $220,000 |
| Detached ADU (two-bedroom, 600 – 800 sq ft) | $210,000 – $280,000 |
| Prefab ADU (Abodu, Dvele, or Cover shell) | $130,000 – $240,000 |
| Foundation and drainage work (as needed) | $8,000 – $25,000 |
Cedar Park prices run slightly above the Austin metro average because lot constraints often require custom foundation work, drainage corrections, and HOA-compliant exterior finishes that add cost. Every Seedling ADU Builders estimate is a written, line-item price before any work begins, so you’ll know the exact number before a single tool is picked up.
Neighborhoods We Serve in Cedar Park
We work across Cedar Park, from the older 1990s subdivisions near Buttercup Creek to newer communities along Ronald Reagan Boulevard and the 183A corridor. Our crews know which HOA design committees require pre-approval and which neighborhoods have drainage easements that affect foundation placement.
- Ranch at Brushy Creek
- Forest Oaks
- Cypress Canyon
- Buttercup Creek
- Twin Creeks
For most Cedar Park neighborhoods, we can schedule an initial site walk within five to seven business days, and our written estimate follows within a week of that visit.
Service Area – Cities Near Cedar Park
Seedling ADU Builders serves Cedar Park and the surrounding communities, with scheduling and dispatch coordinated from our Austin office. If you’re just outside Cedar Park, we also work in Leander, TX, Round Rock, TX, Austin, TX, and Taylor, TX. Call (254) 615-3842 and we’ll confirm whether your address falls within our current service area.
Serving Cedar Park, TX - Our Local Coverage Area
We’re based in the Cedar Park 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 Company in Cedar Park
Most Cedar Park communities with an HOA require design review before you can pull a building permit, especially for garage conversions that change the front elevation or detached ADUs visible from the street. We handle that review as part of the project, and we won’t start plans you can’t actually get approved.
Because Cedar Park sits within Austin’s extraterritorial jurisdiction, some projects need sign-off from both the city and Williamson County. That typically adds two to six weeks compared to a standard Austin permit. We file early and track both offices so the schedule reflects the real timeline, not a best-case assumption.
Yes. Many Cedar Park backyards slope toward drainage easements, which means the foundation may need piers, retaining, or additional drainage work before the ADU goes in. We evaluate the grade during the first site visit and include any necessary foundation work in your written price.
If you’re considering an ADU, garage conversion, or home addition in Cedar Park, call (254) 615-3842 to schedule a free estimate. We’ll review your lot, check the HOA and permit requirements, and give you a written price before anything starts.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Cedar Park Customers Say
"They converted our garage and were so mindful that we were living right there through it. Quiet hours respected, site swept, nothing left out where the kids play. Lovely work."
- Eugene Park"Built a backyard unit for us. For a months long project the crew kept the site remarkably tidy, swept daily, and were respectful of our neighbors and our dog. Beautiful result."
- Charlotte Vey"Backyard cottage build. For a long project they kept the site remarkably tidy and were respectful of our neighbors and our dog. Swept the driveway every evening."
- Leona Pfeiffer
