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 Azle
Adding an accessory dwelling unit in Azle typically costs between $140,000 and $260,000 for a site-built detached ADU, while prefab and modular options from brands like Boxabl and Dvele usually land between $95,000 and $180,000 once site work, utilities, and permits are included. That’s a big range because Azle lots near Eagle Mountain Lake bring their own set of rules: septic reviews, clay soil movement, and water-adjacent setbacks that flatland cities never deal with. Our crews work in Azle every week, and we know which neighborhoods trigger which requirements before the first plan is drawn. If you’re thinking about an ADU on your Azle property, call (682) 204-9686 and we’ll walk you through what’s realistic for your specific lot.
Why Benson ADU Fort Worth Is Azle’s Preferred ADU Builders Company
Azle homeowners keep calling us back because we do something most contractors in this market won’t: we put the price in writing before any work starts, and we stand behind it with a 365-Day Done Right Promise. That matters here because Azle homes hide things. A 1970s brick veneer house in Shady Grove looks solid from the curb, but open the walls and you might find aluminum wiring, rotted sill plates, or a foundation that’s been shifting on clay for four decades. Our ADU Builders team inspects first, writes allowances into the contract for exactly these conditions, and gets your signature on any change before we touch it.
Troy Eastman leads our crews, and every technician who shows up at your Azle property is background-checked and in uniform. You’ll know who’s walking onto your lot. We serve Azle as part of the Relay Home Co. family, founded in 2006, with each location independently owned and operated. The brand behind us means access to leading prefab builders like Mighty Buildings and Plant Prefab, plus James Hardie cladding that holds up to Azle’s hail season. But the guarantee is what keeps people calling: if the work isn’t right within a full year, we make it right. In writing. On every single project.
ADU Plans in Azle
ADU Plans in Azle start with understanding what your specific lot will actually allow. We draw plans that account for Eagle Mountain Lake setback variations, septic system locations, and the clay-rich soil that shifts under slab foundations. A full plan set for a detached ADU in Azle generally runs $4,000 to $9,000 depending on whether you’re converting an existing garage or building new, and whether lake-adjacent reviews are triggered. That price includes site analysis, structural drawings, and the permit package your city needs.
Site Analysis and Permit Drawings
Before we draw a single line, we walk your Azle property and map what’s actually there. Where’s the septic? How far from the water? What’s the soil doing at the back corner? Most homeowners don’t know their lakefront setback until a plan gets rejected, and that’s an expensive way to learn. Our drawings go out correct the first time because we’ve done this on Harbor One lots, Shady Grove lots, and the mid-century ranch streets off 730.
Prefab and Custom Plan Options
Some Azle homeowners want a fully custom ADU with brick to match their main house. Others want a Boxabl or Dvele unit set on a prepared foundation in weeks, not months. Your plan set changes based on that choice, and so does your timeline and your total cost. We’ll show you both paths with real numbers attached before you commit to either.
ADU Contractor in Azle
An ADU Contractor in Azle is only as good as how they handle what’s behind the walls. We opened a 1970s brick veneer home in Shady Grove to tie in a new detached ADU and found aluminum wiring spliced into copper without proper connectors, an immediate fire hazard and code violation. Our crew documented the damage, wrote a change order for re-termination and partial rewire using AlumiConn connectors, and got the homeowner’s signature before touching a single junction box. That ADU now has its own upgraded subpanel and passed every rough-in inspection on the first try. That’s the difference between a contractor who quotes blind and one who plans for Azle’s reality.
Foundations That Survive Azle Clay
Clay-rich soil under Azle expands when wet and shrinks when dry. Pour a standard slab without piers and you’ll see cracks and door misalignment within two seasons. We spec pier-and-beam or reinforced slab foundations based on soil tests, not guesses. It costs more up front. It costs far less than jacking a failed slab two years later.
Septic Reviews Before Permits
On many Azle lake-adjacent lots, adding an ADU triggers a septic system review before any permit is issued. Older systems, especially in Harbor One and Shady Grove, often need costly upgrades that neighboring cities like Fort Worth don’t require for accessory structures. We check this first. You should never find out about a $20,000 septic replacement after you’ve already paid for plans.
Trusted Brands We Service in Azle
We’re authorized to build with Dvele, Boxabl, and Plant Prefab, which means Azle homeowners get curated options instead of a single take-it-or-leave-it product. Each brand brings something different: Dvele’s panelized construction is fast and precise, Boxabl’s units are compact and efficient, and Plant Prefab offers design-forward layouts that suit the custom lakefront homes around Eagle Mountain Lake. We keep local inventory and material sources coordinated for Azle jobs so you’re not waiting on a shipment from California to pour your foundation. Schedule a free estimate and we’ll show you which brand fits your lot, your budget, and your timeline.
Common ADU Builders Problems We See in Azle Homes
- Clay soil movement under standard slabs. Azle’s expansive clay shrinks in drought and swells after storms, and a slab poured without proper piers will crack within two seasons. We spec foundations for the soil you actually have, not the soil a flatland builder assumes.
- Septic system triggers on lake-adjacent lots. Adding an ADU in Harbor One or Shady Grove often forces a septic review, and older systems can fail it. That’s a permit denial and a five-figure upgrade you didn’t budget for unless your contractor checks first.
- Outdated wiring and code upgrades once walls are open. Opening a 1970s Azle home for an ADU tie-in regularly reveals aluminum wiring, undersized framing, or failed waterproofing. We write change-order allowances into your contract so these discoveries become a written, approved line item, not a budget blowup.
- Mismatched additions on brick veneer homes. Many Azle houses are 1970s-1990s brick veneer, and a new ADU that doesn’t match the main home’s brick or siding looks wrong and hurts resale. We match materials and detailing so the addition reads as original to the property.
Pricing for ADU Builders in Azle, TX
A site-built detached ADU in Azle runs $180,000 to $280,000 depending on size, foundation type, and how many surprises the existing structure hides. Prefab and modular installations from Boxabl or Dvele typically land between $95,000 and $180,000 including site work and utility connections. Garage conversions in Azle usually fall between $70,000 and $140,000, but expect the septic review and any required electrical upgrades to move that number. The single biggest cost variable in Azle isn’t square footage, it’s what’s behind the walls and under the slab. We write allowances for that into every contract. Call (682) 204-9686 for a free estimate, and we’ll give you a written price before any work starts. No verbal estimates that shift later.
We Also Serve Cities Near Azle
While this page is focused on Azle, our crews also work in Haltom City, Fort Worth, Southlake, and Colleyville. Each of those cities has its own permit quirks and setback rules, and we handle them the same way: written price first, change orders in writing, 365-Day Done Right Promise on every job. If you’re just outside Azle proper, call (682) 204-9686 to confirm coverage for your address.
Serving Azle, TX - Our Local Coverage Area
We’re based in the Azle 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 Azle
Opening walls on an older Azle home triggers code requirements for electrical, framing, and insulation that weren’t in the original build. You’ll likely need AFCI breakers, structural repairs where wood has rotted, and possibly a subpanel upgrade if your existing panel is maxed out. We document these as written change orders with itemized pricing before any work proceeds. Call (682) 204-9686 for an exact scope on your home, free estimates included.
Setbacks from Eagle Mountain Lake vary by lot in Harbor One, and they can shrink your buildable footprint by several feet compared to a standard Azle lot. That affects ADU placement, orientation, and sometimes overall square footage. We check your specific setback requirements before drawing plans so you never pay for a design that won’t pass. Call us at (682) 204-9686 and we’ll verify your lot’s constraints.
If your Azle property is on septic and you’re adding a bedroom or bathroom, the city will likely require a septic review before issuing a permit. Older systems, especially near the lake, often need replacement or expansion at a cost of $15,000 to $30,000. We check this before you spend money on plans, and we’ll give you a written price for the full project including any septic work. Call (682) 204-9686 to start with a free site assessment.
We write a change order, show you photos of the damage, and get your signed approval before we do anything beyond making the area safe. Your original contract includes allowances for exactly this, so the number doesn’t surprise you. The work gets done right, documented, and inspected. If a covered repair fails within 365 days, we come back free and fix it. Call (682) 204-9686 to discuss your Azle conversion.
Yes, we match brick and siding on new ADUs in Azle so the addition reads as original to your property. That matters on 1970s-1990s brick veneer homes, where a mismatched addition looks wrong from the street and hurts resale. We source matching materials and have James Hardie options for siding that holds up to Azle’s hail and humidity. Call (682) 204-9686 for a free estimate and we’ll show you material samples in person.
If you’re exploring an ADU on an Azle lot, especially anywhere near Eagle Mountain Lake, start with a contractor who checks the septic, the soil, and the wiring before quoting a number. That’s how we work. Call (682) 204-9686 to schedule your free estimate, get a written price before any work starts, and know exactly what’s behind your walls before you spend a dollar.
Written by Troy Eastman, Owner at Benson ADU Fort Worth, serving Azle and the surrounding area.
