Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Home Additions & ADU Across Richland Hills
For a home addition or ADU in Richland Hills, the honest starting number is $45,000, and most full-size additions land between $90,000 and $130,000. A new detached ADU runs $90,000-$220,000, while converting an existing garage runs $30,000-$80,000. We’re Barrett & Sons Construction, owned and operated by Tom Barrett since 1998, and we build on the lots Richland Hills actually has: fully platted, mid-century, and full of surprises behind the drywall. Call (877) 610-1318 and Tom or one of his sons will walk you through what your street, your slab, and your inspector will actually allow.
Why Barrett & Sons Construction Is Richland Hills’s Preferred Home Additions & ADU Company
Richland Hills doesn’t have new subdivisions going in. What it has is a dense grid of 1950s-1970s brick ranches, and almost every project we take on here is an addition, a conversion, or a structural upgrade on a home that’s already seen sixty years of Texas weather. That’s what we’re built for. Our Home Additions & ADU crew has opened enough walls in this part of Tarrant County to know exactly what’s waiting: galvanized supply lines, 60-amp panels, un-permitted additions from the eighties. We don’t flinch, and we don’t hand you a surprise invoice when we find it. Every allowance goes in writing before the first nail moves.
Tom Barrett publishes his name, address, and license number. Ask anyone on your street, or look up the license number yourself. A live person answers our phone 24/7, not a voicemail box in another state. When you call about a project in the 76180 zip, you’re talking to someone who has likely driven past your house this week.
We pull permits and get inspections signed on every eligible job. The permit inspector works for you, not for me. That’s why I like him. He’s the one who makes sure the job behind the drywall is as right as the job you can see.
Our Home Additions & ADU Services in Richland Hills
ADU Design & Permitting
Before we price anything, we check what your Richland Hills lot will actually allow. That means the Tarrant County septic and well setback map, the city zoning overlay, and the current IRC energy code for whatever structure already stands. On a 1962 brick ranch off Rufe Snow Drive, our crew opened a wall for a room addition and found original galvanized supply lines and a 60-amp panel that would never pass inspection. We scoped the rough-in for a full re-pipe and service upgrade before drywall, wrote the allowances for the un-permitted 1980s sunroom that had to be brought up to code, and kept the draw schedule tied to inspection sign-off so the homeowner never paid ahead of work. That’s how every job starts: with the permit path mapped, not guessed.
Garage Conversion ADU
Most Richland Hills garages were built before 1975, which means they lack insulation, proper lateral bracing, and often the slab depth current code requires for living space. We don’t start a conversion by slapping up drywall. We check the slab, the roof structure, and the existing electrical service first. Then we write the full scope, including whatever remediation the Tarrant County inspector will flag, and you see it before we start. A garage conversion in Richland Hills runs $30,000-$80,000 depending on what’s behind the walls.
New Detached ADU
Building a new detached ADU on a fully platted Richland Hills lot is a different animal from building in a new subdivision with big open pads and no history. Your lot was likely surveyed in the 1950s, when setbacks and separation rules were looser than they are now. A proposed ADU can fail on day one if it sits too close to the septic field, the well, or the property line. We run those checks before we draw anything. A new detached ADU in Richland Hills runs $90,000-$220,000, and the biggest cost swing is usually underground: utilities, grading, and drainage on 76180’s Blackland Prairie clay.
Junior ADU & Interior Conversion
A junior ADU, often carved from an existing bedroom, den, or that old sunroom, is the fastest path to rental income or a private suite for family. The catch in Richland Hills is that many of those spaces were added without permits back in the eighties, and they now must be brought up to current code before any new work can be signed off. We handle that remediation as part of the scope, in writing, before you sign anything.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Richland Hills
We install brands you can look up, not mystery materials off a van. On Richland Hills additions and ADUs, we regularly specify Simonton windows and Ply Gem siding and trim, both of which hold up to North Texas heat without warping. We don’t stock showroom bait. We order for your specific job, and we schedule delivery so material doesn’t sit in the rain on your slab. If you want a brand we don’t carry, tell us. We’ll quote it honestly or tell you why we won’t put it on a house in this climate.
Common Home Additions & ADU Problems We See in Richland Hills Homes
- Septic and well setbacks kill detached ADU plans. Many 1950s plats were drawn before current Tarrant County separation rules. We’ve seen proposed ADUs fail on day one because the only buildable corner of the lot sits too close to the drain field. We check the county map before you spend a dollar on design.
- Mid-century wiring and plumbing surface mid-project. Aluminum branch wiring, 60-amp panels, galvanized supply lines. These aren’t rare in Richland Hills. They’re the standard. Scoping them up front, in writing, is the difference between a real number and a change-order avalanche.
- Blackland Prairie clay moves slabs. The soil under 76180 shrinks in drought and heaves in wet years. Adding load to a slab that’s already shifted means a structural review first. Sometimes the foundation remediation costs more than the framing. Better to know before the forms go up.
- Un-permitted 1980s additions block sign-off. That enclosed patio or old sunroom may have been fine in 1985. It won’t pass current Tarrant County code, and it can hold up the permit for your new addition until it’s remediated. We scope it, price it, and fold it into the plan.
Pricing for Home Additions & ADU in Richland Hills, TX
Here are the real numbers we quote in Richland Hills. These are not Dallas suburb estimates. They reflect the mid-century housing stock, the clay soil, and the Tarrant County inspection requirements that apply to your lot.
| Project | Richland Hills Price Range |
|---|---|
| Home Addition | $45,000-$130,000 |
| ADU Construction | $90,000-$220,000 |
| Garage Conversion | $30,000-$80,000 |
What moves the number on a Richland Hills job? Foundation condition, the age and condition of existing electrical and plumbing, whether your lot can accommodate the structure without septic or well setbacks triggering remediation, and what’s hiding behind the walls from a 1968 remodel. We don’t give a range and then hand you a different bill. Every scope, every allowance, every price change arrives as a written change order before work happens. Call (877) 610-1318 for a free estimate. We’ll walk the lot with you and give you a number you can plan around.
We Also Serve Cities Near Richland Hills
Barrett & Sons Construction works throughout the northeast Tarrant County area, including Richland Hills and nearby North Richland Hills, Watauga, Hurst, and Haltom City. If you’re one street over from the city line, you’re still in our service area. Same owner, same crew, same written change orders. Call (877) 610-1318 and tell us which side of Rufe Snow Drive you’re on.
Serving Richland Hills, TX - Our Local Coverage Area
We’re based in the Richland Hills 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 - Home Additions & ADU in Richland Hills
A detached ADU in Richland Hills typically requires both: city zoning approval and Tarrant County permits for septic, well, and any work outside the city’s building jurisdiction. What matters most is that we verify the septic and well setback map before design starts. Many 76180 lots were platted before current separation rules existed, and a proposed ADU can fail on day one if it sits too close to a drain field. Call (877) 610-1318 and we’ll pull your lot’s records before you spend money on plans.
You can, but the second story is rarely the hard part. The hard part is the foundation and the electrical service. Original aluminum branch wiring and a 60-amp panel won’t carry a modern second-story load, and the slab or pier-and-beam foundation underneath has been riding Blackland Prairie clay for over fifty years. We scope a structural review and service upgrade as part of the addition, in writing, so the inspector signs off and you’re not paying for surprises. Call (877) 610-1318 for a free structural walkthrough.
The clay under Richland Hills shrinks and heaves with every boom-and-bust rain cycle, which means your existing slab has already moved. Adding a room changes the load path, and if the slab has cracked or settled, the new work can fail inspection before it’s ever framed. We bring in a structural review before we pour, and when the inspection report calls for foundation remediation, that goes into the written scope, not a change-order surprise. Call (877) 610-1318 to have Tom look at your slab.
First we bring the sunroom up to current Tarrant County code. That means checking the slab, the roof, the electrical, and the lateral bracing. An un-permitted 1980s sunroom almost always needs remediation before it can be signed off as living space. We fold that remediation into the ADU scope, as a written line item, so you know the full cost before drywall starts. Call (877) 610-1318 and we’ll inspect it for free.
Because newer suburbs have garages built to current code. Richland Hills garages were mostly built before 1975, with no insulation, minimal structural bracing, and slabs that don’t meet IRC requirements for living space. A conversion here often means slab remediation, new electrical runs, and structural upgrades before any finish work happens. That’s real work, and it’s why we quote $30,000-$80,000 rather than a generic metro number. Call (877) 610-1318 for a specific quote on your garage.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Richland Hills and all of northeast Tarrant County.