ADU Builder — SE Tennessee & North Georgia
An accessory dwelling unit is one of the highest-ROI investments you can make on your property. Whether you’re adding a guest cottage, an in-law suite, a short-term rental, or a home office with a bath — ConcreteCo.com handles the full concrete and structural shell so you can move in faster.
We serve the Chattanooga metro, the Cumberland Plateau, and the valleys and ridgelines between. From Monteagle to East Brainerd, we’ve poured the foundations and built the shells that turn empty lots into income.
What We Build
Guest Cottage / In-Law Suite
A separate living space on your property — private entrance, full bath, kitchen or kitchenette. We pour the slab, build the frame, roof it, side it, and hand you a weather-tight shell ready for interior finish.
Short-Term Rental Unit
Airbnb and VRBO income without a second mortgage. We build the structure; you furnish it and collect. Most plateau and valley properties allow STRs — ask us about setback and permitting on your lot.
Home Office / Studio
A proper detached workspace — insulated, wired, and private. No more spare bedroom compromises. Build it right from the ground up so it works as an office today and a rental tomorrow.
How We Build Your ADU
Every ADU starts with the ground. We get that part exactly right so everything above it lasts for decades.
01. Site Evaluation
We walk the lot, assess drainage, soil, and grade. We identify where the ADU sits relative to utilities, setbacks, and your main structure.
02. Permits and Engineering
We pull the permits, coordinate with the engineer of record, and handle plan submission. You don’t need to navigate the county yourself.
03. Excavation and Grading
Proper cut and fill, drainage slopes, and a level pad. This step determines whether your ADU stays dry for 30 years or gives you problems in year two.
04. Foundation and Slab
Formed, reinforced, and poured to spec. We work with slab-on-grade, stem wall, and crawl space foundations depending on your site and preference.
05. Structural Framing
Lumber or engineered lumber framing, properly sized headers, hurricane ties where required. The bones that everything else hangs on.
06. Roof, Siding and Exterior
We deliver a weather-tight shell. Interior finishes (plumbing, electrical, HVAC, drywall) are a separate scope — we can coordinate trusted subs or you bring your own.
ADU Cost Estimator
Select your size and finish level to see a ballpark range for the complete structural shell.
Loading estimator…
Frequently Asked Questions
Do I need a permit for an ADU in Tennessee?
Yes. Most counties require a building permit for any new structure with a foundation. We pull all permits as part of our contract — you don’t have to deal with the county office yourself.
How long does it take to build an ADU?
From permit approval to weather-tight shell: typically 8-14 weeks depending on size. Permit timelines vary by county and can add 4-8 weeks before we break ground.
What’s not included in the shell price?
Interior plumbing rough-in, electrical rough-in, HVAC, insulation, drywall, flooring, and cabinetry. The estimator above covers everything from dirt to paint-ready exterior shell.
Can I build an ADU on any lot?
Most single-family lots can accommodate an ADU, but setback rules, minimum lot size, and utility availability all factor in. We assess this on the free site visit.
Do you build ADUs on the Cumberland Plateau?
Yes — Monteagle, Sewanee, Tracy City, Grundy County, and surrounding communities. Rocky and sloped terrain is normal for us; we grade and engineer for it.
Will an ADU increase my property value?
Almost universally yes. A properly permitted ADU typically adds 20-30% to appraised value in our markets, and rental income can offset your mortgage within a few years.
Get Your Free ADU Site Evaluation
Tell us about your lot and what you want to build. We’ll schedule a site visit, walk it with you, and give you a real number — no pressure, no obligation.