Trusted ADU Builders Nationwide
Most homeowners who call us have already been through at least one bad contractor experience. A price that changed at the door. A crew that never showed. A build that started strong and fell apart at the finish. We built Lodgewick ADU Builders to be the opposite of that, and we have been doing it since 2010 as part of the Kingswell family of home-service companies. If you are looking for Los Angeles ADU Builders, we serve the area with the same standards.
An ADU, or accessory dwelling unit, is a second, fully independent home built on the same lot as your main house. It has its own kitchen, bathroom, entrance, and address. Whether you need space for aging parents, rental income, or a grown child moving back, the right ADU builder changes what your property can do. Russ Delmar leads our team, and every project runs under The Kingswell Guarantee: a written price before work begins, a defined arrival window, a clean job site, and a written guarantee on every build. Call (254) 602-5618 and a live person answers, 24/7.
Key Takeaways
- Every project gets a written price before any work starts. No price changes at the door, ever.
- The 365-Day Done Right Promise covers every build. If it is not right, we come back and make it right.
- We work with leading prefab ADU brands including Dvele, Boxabl, and Plant Prefab, matched to your lot and budget.
- Calls are answered by a live person around the clock. No voicemail loops.
ADU Construction
ADU Construction is the full process of building an accessory dwelling unit from the ground up, including foundation, framing, plumbing, electrical, HVAC, drywall, and finish work. Homeowners choose this path when they want a permanent, code-compliant second home on their property rather than a temporary structure. Lodgewick ADU Builders handles the entire build under one written contract, so you are never coordinating four different subcontractors or wondering who is responsible for what. For ongoing care after completion, see our ADU Builders Maintenance Schedule: What to Do and When.
Full Ground-Up Builds
We handle complete ADU construction projects from excavation through final inspection. A detached one-bedroom unit typically runs $180,000 to $260,000 depending on soil conditions, utility runs, and finish level. That number is in writing before the first shovel hits dirt.
Every build follows The Kingswell Way: say the price before the work, show up in the window given, leave the place cleaner than found, put the guarantee in writing, come back if it fails.
Construction Timeline and Permits
A standard ground-up ADU construction takes four to seven months from permit approval to final walkthrough. Design and permitting add another two to four months before construction starts. We pull all permits and schedule all inspections as part of the written scope.
No change orders appear mid-build. If something in the ground is different than expected, we tell you what we found and what it means before doing anything else.
Detached ADU
A Detached ADU is a standalone accessory dwelling unit built as a separate structure from the main house, usually in the backyard or side yard. Homeowners choose a detached ADU when they want maximum privacy for a tenant or family member, or when the existing house footprint leaves no room for an attached conversion. Lodgewick ADU Builders designs and builds detached units sized to your lot, setback rules, and budget.
Privacy and Rental Income
Detached ADUs rent for more than attached units in most markets because tenants get their own four walls and no shared ceiling or wall with the main house. A one-bedroom detached unit with its own entrance, laundry hookup, and small yard area is the most requested configuration we build.
We walk every lot before quoting so the written price reflects actual conditions: utility trenching distance, access for equipment, and any tree or slope issues that affect cost.
Site Work and Utility Runs
The biggest cost variables on a detached ADU are usually underground: trenching for water, sewer, and electrical. A unit sitting 80 feet from the main panel costs more to connect than one sitting 20 feet away. We show you those line items in the estimate instead of burying them in a vague allowance.
We also handle grading and drainage so your new unit does not create a water problem for your existing home. That is part of doing it right the first time.
JADU
A JADU, or junior accessory dwelling unit, is a smaller ADU, typically under 500 square feet, created by converting space inside an existing home, most often an attached garage or a spare bedroom. A JADU may share a bathroom with the main house and usually has a small efficiency kitchen instead of a full one. Lodgewick ADU Builders builds JADUs for homeowners who want a lower-cost option to add a private living space without building a new structure.
Garage-to-JADU Conversions
Converting an attached garage into a JADU is the most budget-friendly ADU path we offer, often landing between $80,000 and $140,000 depending on the condition of the slab, electrical panel capacity, and whether the garage needs a new roof or wall insulation. The written quote includes everything: framing, drywall, mini-split HVAC, kitchenette, and the separate entrance.
We check the foundation and moisture issues before quoting. A garage that has been leaking for a decade needs more than drywall and paint, and you deserve to know that up front.
JADU vs. Full ADU
The main difference is size and kitchen type. A JADU is smaller and can have an efficiency kitchen, which lowers the build cost significantly. A full ADU has a complete kitchen and at least one full bathroom, which makes it rentable as a truly independent unit.
We help you decide which makes sense for your property and your goals, and the written estimate shows both options side by side when the lot supports either path.
ADU Plans
ADU Plans are the architectural drawings, structural calculations, and permit documents required before any ADU construction can legally begin. Homeowners need ADU plans when they are ready to move from thinking about an ADU to getting it approved and built. Lodgewick ADU Builders produces or coordinates complete plan sets that pass code review and give you a clear picture of exactly what you are paying for.
Permit-Ready Drawings
We deliver full permit sets: site plan, floor plan, elevations, electrical and plumbing layouts, and structural details. A standard ADU plan set from a third-party designer runs $8,000 to $18,000; we include plan coordination in our written project quote so you are not surprised by a separate architect invoice later.
Every plan we submit has been through a code checklist before it reaches the permit desk. Fewer review cycles means your build starts sooner.
Matching Plans to Budget
The plans should never promise a build you cannot afford. We work from your real budget number first, then design to it. A plan set for a $120,000 garage conversion looks different from a plan set for a $350,000 detached two-bedroom unit.
We also flag expensive details early. A shed roof costs less to frame than a hip roof. A single wet wall in the kitchen and bath saves thousands in plumbing. You get those choices in writing before they become change orders.
ADU Contractor
An ADU Contractor is the licensed professional who manages the entire accessory dwelling unit build: permits, subcontractors, materials, inspections, and the final walkthrough. Homeowners need a dedicated ADU contractor rather than a general remodeling crew because ADUs have their own code requirements around egress, fire separation, and utility metering. Lodgewick ADU Builders acts as your single point of contact for the whole project.
Single Point of Responsibility
When you hire us, you get one written contract, one schedule, and one person to call. If the electrician is behind, that is our problem to solve, not yours. If the inspector flags something, we fix it and reschedule. You are never left calling around to figure out who dropped the ball.
Our background-checked, uniformed technicians show up on time and identify themselves. You always know who is on your property and why they are there.
What a Real ADU Contractor Should Give You
A real ADU contractor gives you a written price before work starts, a realistic schedule, proof of insurance, and a written warranty. We give you all four, and the warranty is named: the 365-Day Done Right Promise. If the work is not right within a year of completion, we come back and make it right at no charge.
That promise is not a handshake. It is printed on every contract we write.
ADU Design
ADU Design is the process of planning the layout, finishes, and structural approach for your accessory dwelling unit before construction begins. Good ADU design means the unit fits the way you or your tenants will actually live in it, uses space efficiently, and stays inside your budget. Lodgewick ADU Builders handles design as part of the build, so the person designing the unit is the same person accountable for building it.
Layout Efficiency and Livability
A well-designed 500-square-foot ADU feels larger than a poorly designed 700-square-foot one. We focus on sight lines, window placement, storage built into walls, and kitchen layouts that actually function. Murphy beds, stacked laundry closets, and built-in seating are details we plan from the first drawing.
We design to standard material sizes wherever possible. That reduces waste, shortens the build, and keeps the price where the written estimate said it would be.
Prefab and Panelized Options
For some lots and timelines, a panelized or factory-built system from brands like Dvele or Plant Prefab makes more sense than stick framing on site. These units arrive in finished panels or modules, cutting construction time by weeks or months. We review your lot access, local codes, and budget to tell you honestly whether prefab is the right call.
We have hands-on familiarity with these systems, which means we can quote them accurately instead of guessing.
Backyard ADU
A Backyard ADU is a detached accessory dwelling unit placed in the rear yard of a property, behind the main home. Homeowners choose a backyard ADU when they want to preserve the front appearance of the property, create separation between the main house and the new unit, or use otherwise underused yard space. Lodgewick ADU Builders specializes in backyard units designed around setback requirements, utility access, and the way light moves across your lot. We also serve as ADU Builders - Huntington Park for homeowners in that area.
Lot Assessment Before Design
Before we draw anything, we walk the lot. We check slope, drainage, tree root zones, access for equipment, and the distance from the main panel and sewer line to the build site. Those findings drive the design and the written price. A backyard ADU on a flat lot with easy access costs less than the same unit on a sloped lot with tight side yards.
We are straight with you about what the site will and will not allow. Better to know before the plans are drawn than after the concrete is poured.
Backyard ADU Cost Range
A one-bedroom backyard ADU typically runs $200,000 to $300,000 on flat ground within 50 feet of existing utilities. Difficult sites, two-bedroom layouts, or premium finishes move the number higher. The written estimate breaks out site work, utility runs, and the structure itself so you see exactly where the money goes.
We also compare stick-built against factory-built options like Boxabl or Plant Prefab when the site conditions favor a faster assembly. You get both numbers and a clear recommendation.
Brands We Service
We have hands-on experience with several leading prefab and panelized ADU systems, which means we quote them accurately and build them correctly. With Dvele units, we focus on their high-performance envelope and indoor air quality systems. Dvele builds are tighter than most stick-built homes, and the assembly details matter. With Boxabl, we know the crane placement, foundation tolerance, and utility hookup requirements cold, and we handle the site prep and finishing work that turn a folded module into a livable home.
With Plant Prefab, we coordinate the panel delivery schedule, on-site assembly sequencing, and finish systems so the factory-built structure comes together on time. Whether you have a Dvele, Boxabl, Plant Prefab, or any other make, we can help. If you are still deciding between prefab and traditional construction, we will give you honest numbers for both paths.
Signs You Need a Pro Right Now
- Water stains or musty smells in an existing garage or bonus room you want to convert. Moisture problems do not fix themselves, and covering them with drywall makes things worse. We find the source and fix it before any conversion work starts.
- Your main panel is full or nearly full. An ADU adds significant electrical load. If your panel cannot handle it, you need a service upgrade planned into the build, not discovered halfway through.
- Setback or height questions from your local building department. ADU rules vary widely, and building without approved plans can mean tearing work out later. We handle the permits so the build is legal from day one.
- A previous contractor walked off the job. We see this too often. We will assess what was done correctly, what needs to be redone, and give you a written price to finish the project properly.
- You have a written quote from someone else that feels too low or too vague. If the price does not list site work, utilities, permits, and finishes, it is not a real price. We show you every line item before you sign anything.
Our Process, Step by Step
- 1
Phone consultation and lot review. Call (254) 602-5618 and a live person answers. We talk through your goals, your budget range, and the basics of your property. If it makes sense to move forward, we schedule a site visit.
- 2
On-site assessment. We walk the property and measure everything that matters: access, grades, utility locations, tree protection zones, and setback lines. We take photos and notes that drive the design and the written price.
- 3
Written estimate and scope. You get a line-item written price that covers site work, structure, systems, finishes, permits, and the 365-Day Done Right Promise. No allowances hiding the real number. No price changes at the door.
- 4
Design, permits, and pre-construction. We produce the plan set, submit for permits, and order long-lead materials. You get a schedule with defined arrival windows, and we hit them or call ahead with a new time.
- 5
Construction and final walkthrough. Our uniformed crew builds to the plan, keeps the site clean daily, and walks you through the finished unit before we call it done. The written guarantee is in your hands at completion, not promised later.
How Much Does ADU Builders Cost?
ADU construction costs vary by type and site, but honest national ranges help you plan before you sign anything. A JADU garage conversion typically runs $80,000 to $140,000. A one-bedroom detached backyard ADU usually lands between $180,000 and $300,000. A full two-bedroom ground-up ADU with premium finishes can reach $350,000 or more. The written price you get from Lodgewick ADU Builders shows every line item, so there is no mystery about where the money goes.
What moves the number: utility distance from the main house, soil conditions, foundation type, finish level, and whether you choose stick-built on site or a prefab system from a brand like Dvele or Boxabl. The way to avoid overpaying is to get a fixed written price with no allowances for vague categories. The way to avoid underpaying and getting burned is to check that the low bid includes permits, site work, and a real warranty. Our free estimate includes the full written scope, the schedule, and the guarantee in writing.
Where We Work
Lodgewick ADU Builders serves homeowners across the United States through local crews operating under The Kingswell Guarantee. Every location is independently owned and operated, which means your build is handled by a team that knows the local rules and answers to you directly. The written price, the arrival window, the clean job site, and the 365-Day Done Right Promise are the same everywhere we work.
Frequently Asked Questions About ADU Builders
An ADU builder is a contractor who specializes in designing, permitting, and constructing accessory dwelling units: small, independent homes built on the same lot as an existing house. Lodgewick ADU Builders has focused on ADUs, garage conversions, and home additions since 2010. We handle everything from the first lot assessment to the final inspection under one written contract.
A typical detached ADU takes four to seven months of construction once permits are approved. Design and permitting add another two to four months before that. A JADU garage conversion is usually faster, often three to five months of construction. Your written schedule shows the arrival windows and milestone dates before work starts.
A JADU conversion typically runs $80,000 to $140,000. A one-bedroom detached backyard ADU usually lands between $180,000 and $300,000. Site conditions, utility distances, and finish choices move the number. You get an exact written price before any work begins, with every line item shown. Call (254) 602-5618 for a free estimate.
Yes, we have hands-on experience with Dvele, Boxabl, and Plant Prefab systems. We handle site prep, foundation work, assembly coordination, and all finish work for these prefab brands. If you are deciding between prefab and traditional construction, we give you written numbers for both options.
Our schedule depends on current project load and your permit timeline, and we will tell you the truth about both. What we never do is press you with fake urgency or promise a start date we cannot keep. What you get is a written schedule with real arrival windows, and if something shifts, we call you before you have to call us.
Every Lodgewick ADU Builders project includes the 365-Day Done Right Promise in writing. If the work is not right within a year of completion, we come back and make it right at no charge. That covers our workmanship and materials we installed, and it is printed in the contract before construction begins.
Start by gathering your property survey or plat, any existing drawings of the house, and a clear idea of your budget ceiling and how you want to use the unit. That helps us give you a useful written estimate faster. We handle the rest: site assessment, plans, permits, and the build itself.
Schedule Your ADU Builders Service Today
A written price, a real schedule, and a guarantee in writing before the first nail is driven. That is how we have built ADUs since 2010, and that is what you get on every project. Call (254) 602-5618 now and a live person answers, 24/7. Tell us about your lot and your goals, and we will schedule a free on-site estimate with no obligation.
Written by Russ Delmar, Owner at Lodgewick ADU Builders, serving homeowners nationwide since 2010.