







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 River Oaks
Adding an ADU in River Oaks is the smartest way to create rental income, house family, or build a workspace without leaving the neighborhood you love. River Oaks has almost no land left for traditional new construction, so an accessory dwelling unit is the only realistic path to more square footage without rewriting the city’s treasured suburban character. We’re Benson ADU Fort Worth, and our crews serve River Oaks directly, coordinated from the brand’s Dallas-Fort Worth office. Troy Eastman leads our team, and every project starts the same way: a written price before work begins. Call (682) 204-9686 for a free estimate.
Why Benson ADU Fort Worth Is River Oaks’s Preferred ADU Builders Company

River Oaks homeowners keep calling us for one reason: we put numbers in writing before a single shovel turns. Most of the homes here are single-family ranch and mid-century builds from the 1950s through the 1970s, and those houses have real quirks. Aging slab foundations. Outdated electrical panels. Cast iron waste lines hiding under garage slabs. Our ADU Builders team knows what to look for before excavation starts, so you’re not hit with a surprise bill mid-project.
Every technician who steps onto your River Oaks property is background-checked and in uniform. You’ll know exactly who’s there and why. And when you call, a live person answers. Not a voicemail loop, not a call center script. Someone who can actually pull up your project file. That level of directness matters when you’re spending five figures on a detached ADU behind a 1960s ranch.
We’re part of the Relay Home Co. family, founded 2006, and every location operates under The Relay Visibility Guarantee. That means a written guarantee on every project, a 365-Day Done Right Promise, and a free second visit if any covered repair fails within the year. No fine print games.
ADU Construction in River Oaks
ADU Construction in River Oaks typically runs $120,000 to $280,000 for a complete detached unit, depending on size, site conditions, and finish level. Most River Oaks projects we see are garage conversions or backyard detached units, and the final number hinges on what’s hiding underground and what the HOA requires above it. A homeowner in River Oaks needs this service when they’ve outgrown their mid-century footprint but won’t leave the area, when an aging parent needs to be close by, or when rental income would offset a mortgage.
Garage Conversion Considerations
Most ADU permits in River Oaks are for garage conversions. Before any framing starts, we camera-inspect the original cast iron waste lines. These 1970s-era pipes crack under decades of North Texas clay soil movement, and catching that before excavation saves thousands and keeps your permit moving.
Custom Built ADU Options
Some River Oaks lots work better with a site-built custom ADU, especially when your HOA requires specific exterior materials. We design around your development’s architectural rules from day one, so you don’t get a stop-work order because the HardiePlank color didn’t match the required palette.
Detached ADU in River Oaks

Detached ADU projects in River Oaks generally run $160,000 to $320,000 fully finished, with prefab options from brands like Dvele and Mighty Buildings landing on the lower end and fully custom builds at the top. A detached ADU makes sense here because the generous lots from the 1950s-70s era give you room to build behind the primary home without crowding the existing structure. This is the best option when you want a true separate space: a rental unit, a quiet home office, or a place for adult children who aren’t ready to fully leave.
Prefab ADU Installation
Prefab units from manufacturers like Boxabl and Plant Prefab arrive as factory-built panels or modules, which cuts on-site framing time significantly. In River Oaks, where summer heat can stall site work, a shorter build window matters. These units still need a proper foundation, utility connections, and HOA-compliant exterior finishes.
Studio ADU Considerations
A studio ADU in River Oaks typically runs $100,000 to $180,000, depending on whether it’s attached to the primary home or standing separately. These smaller units work well on the narrower lots near the West Fork Trinity River, where setback rules might limit your footprint. We verify the FEMA flood map before designing the foundation, because the wrong slab elevation gets rejected at inspection.
Trusted Brands We Service in River Oaks
Benson ADU Fort Worth builds with and sources from brands you can research yourself: Dvele, Mighty Buildings, Boxabl, and Plant Prefab. We’re authorized to install these prefab systems, which means your River Oaks project gets factory precision instead of a guy cutting studs in a driveway. We stock common components for these brands in our metro warehouse, so warranty parts don’t take weeks to arrive when something needs attention. For a River Oaks homeowner, that means less downtime and a path to resolution that doesn’t involve waiting on a shipping container.
Common ADU Builders Problems We See in River Oaks Homes
- Cracked cast iron waste lines under 1970s garage slabs. The original plumbing was never meant to last this long, and when a slab shifts, those pipes snap. We camera-inspect before excavation every time.
- HOA architectural rule violations stopping work. River Oaks developments have specific exterior material requirements, and a stop-work order over siding color is an expensive delay. We check the rules before we frame.
- Foundation elevations rejected due to floodplain overlays. Parts of River Oaks sit near the West Fork Trinity River, and if your slab height doesn’t match the FEMA map, the inspector fails it. We check the map during design.
- Aging electrical panels that can’t handle an ADU’s load. Many 1960s-era River Oaks homes still have 100-amp panels. A new ADU needs a 200-amp upgrade, which we price upfront in your written quote.
Pricing for ADU Builders in River Oaks, TX
Here’s what River Oaks homeowners can expect. A garage conversion ADU runs $90,000 to $180,000. A detached studio ADU runs $100,000 to $180,000. A full one-bedroom detached ADU with a kitchen and bath lands between $160,000 and $320,000. Prefab options from Dvele or Mighty Buildings usually come in 15 to 25 percent below site-built for the same square footage. What moves the number: foundation condition, electrical panel upgrades, cast iron line replacement, HOA-required exterior finishes, and floodplain elevation requirements if you’re near the West Fork Trinity River. We give you a written price before work starts, and that number doesn’t shift unless you change the scope. Call (682) 204-9686 for a free estimate.
We Also Serve Cities Near River Oaks
Our crews work throughout the West Fork Trinity area, including Fort Worth, Haltom City, Euless, and Burleson. If you’re a few minutes outside River Oaks, we still bring the same written-price guarantee and 365-Day Done Right Promise to your project.
Serving River Oaks, TX - Our Local Coverage Area
We’re based in the River Oaks 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 River Oaks
Yes, many River Oaks homes from the 1960s and 1970s have slab foundations with hairline cracks from decades of North Texas clay soil expansion and contraction. Before we design your ADU, we do a visual inspection and, when needed, recommend a structural engineer to confirm the existing slab can handle the new load. If repairs are needed, we price them into your written quote before work starts. Call (682) 204-9686 to schedule a foundation check.
Most River Oaks HOAs require architectural committee approval before any exterior modification, including garage conversions. You’ll typically submit plans showing materials, colors, and site placement. We prepare HOA-ready drawings and verify the required exterior finishes before framing, which prevents stop-work orders. If your HOA requires specific cladding, we can match it with James Hardie products.
Homes built in River Oaks during the 1970s commonly used cast iron waste lines, and those pipes crack under slab movement over time. If one cracks during ADU excavation, the mid-project repair can add $3,000 to $8,000 and delay your permit. We camera-inspect the lines before digging so you know exactly what’s underground. Call (682) 204-9686 for a free inspection quote.
Yes, but you need to respect setback requirements, height limits, and any HOA exterior material rules that apply to your specific development. River Oaks lots are generally generous enough for a detached unit behind the primary home. We design your ADU to meet city setbacks and HOA standards from the first conversation, so you don’t fight the approval process later.
It depends on the builder and the warranty terms. Some newer River Oaks homes have builder warranties that exclude modifications not performed by the original builder or their approved contractors. We review your warranty language before work starts and advise you on what’s covered, what isn’t, and how to structure the project so you don’t lose coverage on the primary home. Call (682) 204-9686 to talk through your situation.
Written by Troy Eastman, Owner at Benson ADU Fort Worth, serving River Oaks and the surrounding metro area.




