Cover ADU Builders in San Antonio: What to Know First
We’re an independent Cover service provider, and we build, install, and finish Cover ADUs across San Antonio. A typical Cover project here runs 4 to 7 months from permit submittal to final inspection, and we give every family a written price before any work begins, so you know the full number on day one, not month four. If you own a Cover home or are planning one, call (210) 981-6358 and we’ll walk you through what your lot actually needs.

This page is for Cover owners in San Antonio who want a builder that understands the product, the city’s permit process, and the realities of Texas heat on a compact dwelling. We’re not authorized by Cover, and we don’t pretend to be. We’re the crew that shows up, plans around your family’s schedule, and leaves the site clean enough that your kids can play in the yard the same afternoon.
Key Takeaways
- We build and install Cover ADUs across San Antonio, including detached units, studio layouts, and full one-bedroom configurations.
- Every project gets a written line-item price before we start. No change orders, no surprise add-ons.
- The 365-Day Done Right Promise backs every Cover ADU we complete. If something isn’t right, we fix it.
- We also service and install Abodu and Dvele units, so you’re not locked into one product path if Cover isn’t the right fit for your lot.
- Call (210) 981-6358 and you’ll reach a live person. Ben Ortega answers the phone himself most days.
How Cover Products Fail – and How We Fix Them
Cover homes are built differently than site-built ADUs, and their failure points are different too. Here’s what we see on Cover jobs in San Antonio and how we correct it.
- Envelope sealing at panel joints. Cover units ship as factory-built panels that get joined on site. In San Antonio’s humidity swings, we’ve seen the seam tape and flashing at panel intersections fail earlier than expected, especially on south-facing walls that bake all afternoon. We pull the affected trim, re-flash with a higher-grade butyl tape, and re-seal before the interior shows any water staining.
- Mini-split line set chafing. Cover’s standard HVAC is a ductless mini-split, and the factory-installed line sets can rub against framing penetrations during transit. We’ve found refrigerant leaks months after install that trace back to a worn spot where the copper passed through a wall cavity. We inspect line sets on every Cover job, replace chafed sections, and add protective sleeving where needed.
- Foundation anchor drift on expansive soil. San Antonio has serious clay soil that moves with moisture. Cover’s prefab foundation system works, but anchor points can shift slightly in our dry summers followed by wet Octobers. We check anchor torque and shim as needed during installation, and we’ll schedule a follow-up inspection six months after completion to make sure nothing moved.
- Window flashing at the sill. The factory-installed windows on Cover units are solid, but the sill flashing detail doesn’t always hold up to our driving rain storms. We’ve re-flashed several Cover windows in Alamo Heights and Terrell Hills where water was pooling under the sill pan. It’s a straightforward fix when caught early, and an expensive drywall repair when missed.
- Drainage under the unit. Cover homes sit low to grade. If your lot doesn’t slope away properly, water collects under the structure and eventually wicks up into the floor assembly. We build up a compacted gravel base with proper grading on every Cover install, and we’ll flag drainage issues before they become floor rot.
Our Cover ADU Builders Process
Here’s what a Cover ADU project with us looks like from the first call to the final walkthrough.
- 1
Site visit and lot assessment. We walk your property, check access for delivery, test drainage, and look at where utilities need to run. Ben Ortega usually does this himself, and he’ll tell you honestly whether a Cover unit fits your lot or whether a different approach makes more sense.
- 2
Written line-item price. You get a full breakdown before you commit: site prep, foundation, delivery, installation, utility hookups, finishes. That number doesn’t change unless you change the scope.
- 3
Permits and approvals. We pull permits through the City of San Antonio and coordinate with any HOA requirements. Cover units qualify as ADUs under San Antonio’s current accessory dwelling regulations, but every lot has its own quirks, and we handle the paperwork.
- 4
Foundation and site prep. We grade, compact, and pour or set the foundation system appropriate for our soil. On expansive clay lots, that means extra attention to moisture barriers and drainage.
- 5
Delivery and installation. The Cover unit arrives on a truck. We coordinate the delivery window with you so your driveway isn’t blocked for a week. Installation takes 2 to 4 days depending on the unit size.
- 6
Utility connections and finish work. We connect electrical, water, and sewer, then handle interior finishes, trim, and any punch-list items. Before the crew leaves, we photograph the cleanup and send it to you. The job’s not done until the site looks like we were never there, except for the new ADU in your backyard.
What Cover ADU Builders Costs in San Antonio

Cover units themselves have a factory price, but the installed cost in San Antonio depends on your lot, your utility runs, and the finishes you want. Here’s what we see in this market right now.
| Scenario | Typical Installed Range |
|---|---|
| Cover Studio (small lot, simple utility runs) | $180,000 – $230,000 |
| Cover One-Bedroom (standard San Antonio lot) | $230,000 – $290,000 |
| Cover One-Bedroom with upgraded finishes | $290,000 – $340,000 |
| Site work, drainage correction, and long utility runs | Add $15,000 – $40,000 |
| Permits and City of San Antonio fees | $4,000 – $8,000 |
What moves the price: your lot’s slope and soil, how far utilities need to run from the main house, whether we’re working around existing trees, and the finish level you want inside. We’ll give you an exact number in writing before work starts. Call (210) 981-6358 to schedule a site visit and get your estimate.
Why San Antonio Homeowners Call Seedling ADU San Antonio for Cover Work
Cover builds a good product. But a factory-built ADU is only as good as the crew that puts it on your lot. That’s where we come in. Every Cover project we take on is backed by our 365-Day Done Right Promise, which means if something isn’t right within a year of completion, we come back and make it right. It’s in writing, and it applies to the full scope of work, not just the parts we feel like covering.
Our technicians are background-checked and uniformed. They wear shoe covers inside your home, lay down drop cloths, and use pet-safe products wherever there’s a choice. Before the crew leaves each day, someone takes a photo of the cleanup and it gets sent to you. That’s the Cedarwell Care Promise, and it’s not a marketing line. It’s how we run every job, including Cover installs.
We also work with Abodu and Dvele when Cover isn’t the right fit for a particular lot or budget. That matters because you’re getting advice from a builder who knows multiple prefab systems, not a sales rep pushing one product. Tell me what you need the space to do, and we’ll figure out the rest from there.
FAQs

No. We’re an independent Cover service provider, which means we’re not authorized by Cover, but we follow manufacturer installation guidelines and use compatible materials. Our workmanship is covered by our own 365-Day Done Right Promise, separate from any factory warranty on the unit itself.
Most Cover projects in San Antonio take 4 to 7 months from permit submittal to move-in ready. Site conditions, utility complexity, and City of San Antonio permit queue times are the biggest variables. We give you a realistic timeline on day one and stick to it.
Yes. We handle repairs on Cover units installed by other builders, including envelope sealing, mini-split issues, foundation settlement, and drainage problems. If you’re seeing water stains, hearing hissing from the HVAC, or noticing doors that stick, call (210) 981-6358 and we’ll diagnose it.
Sometimes, but not always. Cover’s factory construction reduces on-site labor, which saves money on the structure itself. But San Antonio site work, drainage, utility runs, and permits are the same regardless of whether the unit is prefab or stick-built. We’ll show you both options and let you decide based on real numbers, not a sales script.
Yes. We handle the full permit process with the City of San Antonio, including ADU-specific approvals and any required inspections. That’s part of the written estimate, not an add-on fee you discover later.
Get Your Cover ADU Estimate in San Antonio
If you own a Cover unit in San Antonio or you’re planning to add one to your lot, call (210) 981-6358 and ask for Ben. We’ll come out, look at your property, and give you a written price before you commit to anything. Estimates are free, and you’ll talk to a person, not a phone tree.
Written by Ben Ortega, Owner, Seedling ADU San Antonio at Seedling ADU San Antonio, serving San Antonio and nearby areas.


