Trusted ADU for Charlotte Homeowners
An accessory dwelling unit in Charlotte is a serious construction project, not a weekend job. Whether you’re planning a detached backyard cottage in Plaza Midwood, a garage conversion in Dilworth, or a basement apartment in NoDa, the work has to clear Mecklenburg County zoning, building code, and utility requirements before a single wall goes up. Threshold Group brings one standard to ADU projects across all twelve of our trades, from foundation to insulation to the final walkthrough. Preston Kimball built this family of brands on a simple idea: you should know exactly who is at your door before you open it. Call (743) 356-3546 to talk through your ADU - Charlotte project.
What Our ADU Service Includes
ADU work spans multiple trades, and that’s precisely why Charlotte homeowners come to us. We coordinate the pieces other contractors sub out to strangers. Every trade involved answers to the same Threshold Standard: background-checked, identity-verified, photo-badged technicians introduced by name and photo before they arrive. Here is what that looks like on the ground.
Planning and Feasibility
Before any permit gets pulled, you need to know whether your Charlotte lot can support an ADU at all. Setbacks, lot coverage, tree canopy rules in neighborhoods like Myers Park, and the city’s accessory dwelling ordinance all shape what is buildable. We walk your property, confirm what the zoning allows, and give you a written assessment of what can go where, at what cost, and how long it will take. No surprises later, because the planning happens first.
Foundation and Site Work
Charlotte’s red clay soil expands and contracts with moisture, and a detached ADU needs a foundation that accounts for that movement. We handle grading, drainage, slab or crawl space foundation, and utility trenching from the main house to the new unit. Every excavation is marked and every connection is inspected. The goal is a structure that sits dry and level through Charlotte’s wet springs and dry summers.
Framing and Structural Work
Whether it is a stick-built cottage or a conversion of an existing garage, the framing carries the entire project. We build to current North Carolina building code, including wind load requirements that matter in this part of the state. Roof ties, shear walls, and proper header sizing are not optional, and we treat them that way. The frame is what makes the space safe to occupy for decades.
Electrical, Plumbing, and HVAC
An ADU needs its own subpanel, water lines, sewer or septic connection, and conditioned air. Our electrical and HVAC trades work inside the same Threshold Standard as the rest of the family, so the person running wire to your new unit is the person we told you to expect, by name, with a photo. We size systems correctly for the square footage, run dedicated circuits, and pull the required mechanical permits. Inspections come next, and we stand behind the work through every one of them.
Insulation and Drywall
Charlotte summers make insulation a quality-of-life issue, not a checkbox. We install insulation rated for our climate zone, seal the building envelope properly, and hang and finish drywall to a smooth, paint-ready surface. This is where the ADU stops being a construction site and begins to feel like a home. The 365-Day Done Right Promise covers every inch of this work: if it is not done right, we make it right.
Windows, Doors, and Exterior Finish
The windows and doors in your ADU affect security, energy cost, and how the structure looks from the street. We install units that meet Charlotte’s energy code and match the character of the main house where that matters to you. Exterior siding, trim, and roofing tie the whole structure together and protect it from our wet, humid climate. One standard, twelve trades, applied to every opening in the building.
Interior Finish and Final Walkthrough
Cabinetry, flooring, paint, trim, fixtures, and the small details that make a unit rentable or ready for family. We coordinate these finishing trades so the project ends cleanly instead of limping across the finish line. Before we call the job complete, you do a walkthrough with the project lead. Anything not right gets made right under the Done Right Promise before you sign off.
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.
Brands We Service for ADU
ADU construction involves manufactured components as well as site-built work, and we have direct experience with the major brands Charlotte contractors specify most. LiftMaster equipment shows up frequently in ADU projects with attached or integrated garage spaces, and we know their opener systems inside the rough-in and install phases. Our team handles the wiring, mounting, and programming so the unit works the first time.
Chamberlain and Genie openers also appear regularly in ADU garage conversions, and we stock the common parts for both lines when a repair or replacement is needed mid-project. Clopay doors get specified on a lot of detached ADUs with garage bays, and we understand their track systems, spring assemblies, and panel alignment. Whether your ADU includes a LiftMaster, Chamberlain, Genie, Clopay, or any other make, the work gets handled under the same Threshold Standard.
Signs You Need ADU Right Now
- Your family has outgrown the main house. An aging parent, an adult child, or a growing family puts pressure on shared space. An ADU gives everyone room without a move across town.
- You are turning away rental income. Charlotte’s rental market supports ADUs in neighborhoods from South End to University City. Every month the unit stays unbuilt is income you are not collecting.
- Your garage is storing junk, not cars. A garage conversion reclaims square footage you already own. The foundation and roof exist; the project is faster than new construction.
- You want aging parents nearby but independent. A backyard ADU keeps family close with a front door of their own. That matters more than square footage.
- Property values on your street are rising and you want to capture that equity. A well-built ADU adds appraised value in most Charlotte neighborhoods. Done right, it pays for itself over time.
Our ADU Process – Step by Step
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Free on-site consultation. We visit your Charlotte property, measure what exists, and listen to what you want the ADU to do. You get a written assessment of feasibility, rough budget, and timeline. No charge, no pressure.
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Design and permitting. We prepare the plans, submit to Mecklenburg County, and handle the permit process. You stay informed at each step, and we tell you what the county is asking for before they ask for it.
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Site preparation and foundation. Grading, drainage, utility connections, and the foundation go in first. Charlotte soil conditions drive how we detail this phase, and we do not cut corners here.
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Construction and trade coordination. All twelve Threshold trades work to one schedule and one standard. You know who is arriving each day, by name and photo, before they knock.
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Inspections, walkthrough, and the Done Right Promise. County inspections come first, then your walkthrough with the project lead. If anything is not right, the 365-Day Done Right Promise covers the fix.
How Much Does ADU Cost in Charlotte?
ADU construction in Charlotte typically runs from $180,000 to $400,000 for a detached unit, depending on size, site conditions, and finish level. A garage conversion is usually less, often falling between $120,000 and $250,000 because the shell already exists. Small prefabricated or modular ADUs can start around $90,000, while a fully custom two-bedroom unit with premium finishes can exceed $450,000. The number that matters is the one in your written estimate, and we give you that before any work begins.
What moves the price most: whether you are converting or building new, the square footage, utility connection distance, soil conditions on your lot, and the finish package you choose. Avoid overpaying by getting a line-item estimate that separates site work, structure, systems, and finishes, and by confirming that the contractor handles permits and inspections in-house. Our free estimates include all of that detail, in writing, before you commit to anything. No-hassle upfront pricing is how the whole Threshold family works.
ADU Near Charlotte – Our Service Area
We serve ADU projects across the Charlotte metro, including Dilworth, Plaza Midwood, NoDa, South End, Myers Park, Ballantyne, University City, and the surrounding Mecklenburg County communities. If you are looking for an ADU in Charlotte, you are in the right place. Our home base coordinates every trade, so you always talk to a live person, 24/7, not a voicemail queue. Turnaround on estimates is typically within a few days of your call.
Serving Charlotte, NC - Our Local Coverage Area
We’re based in the Charlotte area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions – ADU in Charlotte
An ADU, or accessory dwelling unit, is a second, fully independent living space on the same lot as a single-family home. In Charlotte, that usually means a detached backyard cottage, a garage conversion, or a basement apartment with its own entrance, kitchen, and bathroom. ADUs can be rented out or used for family, and they are governed by Mecklenburg County zoning rules. We help you understand what your specific lot allows before you spend a dollar on plans.
A garage conversion typically takes four to six months from permit to final inspection. A detached new-build ADU usually runs six to twelve months, depending on size, weather, and county inspection scheduling. We give you a written timeline at the start and update it as the project moves. Call (743) 356-3546 to talk about your specific schedule.
Most ADU projects in Charlotte fall between $120,000 and $400,000 depending on whether you convert or build new, the square footage, and the finish level. We give you a free, line-item written estimate before any work begins, and the price we quote is the price you pay. No-hassle upfront pricing is standard across every Threshold brand. Call (743) 356-3546 for an exact quote on your project.
Yes, we service LiftMaster and Chamberlain openers, and our team knows their rough-in and installation requirements for ADU garage spaces. We also work with Genie and Clopay components when those brands are specified. Whether your unit uses one of those makes or something else, the work is covered under the same Threshold Standard. Reach us any time at (743) 356-3546.
Construction projects are scheduled, not dispatched, so we do not promise same-day starts on ADU work. What we do promise is a fast, free on-site consultation and a written estimate within days of your call. If you have an urgent structural or safety issue related to an existing ADU, call (743) 356-3546 and a live person will help you figure out the next step.
The 365-Day Done Right Promise covers this work: if it is not done right, we make it right, no runaround. That promise travels across every Threshold brand and every trade on your project. Workmanship issues that show up within the first year get fixed at no charge. Call us and we will schedule the correction.
Know what you want the ADU to do: house family, generate rent, or add resale value. Walk your lot and note where a detached unit might sit, or identify the garage or basement you want to convert. Have your property survey available if you have one, though we can help you obtain it. Then call (743) 356-3546 and we will schedule the free consultation.
Schedule Your ADU Service in Charlotte Today
You will know exactly who is coming to your door, by name and photo, before they arrive. That is the Threshold Standard on every trade, every project, every time. Call (743) 356-3546 for a free, no-obligation estimate on your Charlotte ADU. One standard, twelve trades, and a live person answering 24/7.
Written by Preston Kimball, Owner at Threshold Group, serving Charlotte since 2010.