A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Home Addition Contractor Across Cibolo
Home addition costs in Cibolo typically run $160 – $320 per square foot depending on scope, foundation work, and whether the lot sits on sewer or septic. Most families we work with in neighborhoods like Turning Stone, Falcon Ridge, and along FM 78 need a written price before they commit, which is exactly what we provide before any work begins. Ben Ortega leads our Cibolo crews, coordinating everything from the first site walk to the final clean-up photo. If you’re planning a room addition, second story, or detached suite, call (210) 981-6358 for a free estimate with real numbers.
Why Seedling ADU San Antonio Is Cibolo’s Preferred Home Addition Contractor Company
Cibolo sits over the Edwards Aquifer Recharge Zone, which changes how additions get permitted and priced. A driveway extension or new patio that’s fine in Universal City can trigger stormwater review here, and we scope for that before quoting, so the number you see is the number you pay. Our crew has worked in Cibolo’s newer subdivisions long enough to know which HOAs in Falcon Ridge and Turning Stone restrict visible exterior changes and which lots still run on septic. That local knowledge keeps projects moving and keeps inspections clean.
Every project gets the Cedarwell Care Promise: shoe covers and drop cloths inside the home, pet-safe products where there’s a choice, and a photo of the clean-up before the crew leaves. You’ll also get a live person on the phone at any hour during your build, not a voicemail tree. We’re a Home Addition Contractor team that works with Abodu, Cover, and James Hardie materials, so you’re not locked into whatever a builder prefers to sell. Written pricing, a 365-Day Done Right Promise, and a crew that treats your floors and your kids’ sleep schedule with care.
Bathroom Addition Contractor in Cibolo
A Bathroom Addition Contractor in Cibolo handles what sounds simple but rarely is: adding a full bath to a home that was built with one shared bathroom. In Cibolo’s 1990s-era subdivisions along Green Valley Road and in the Steele Creek area, we regularly see three- and four-bedroom houses with two baths, and a growing family that needs a third. This job typically runs $35,000 – $65,000 in Cibolo, with the exact figure shaped by whether we can tie into existing drain lines or need to run new pipe through a slab on clay-heavy soil.
On larger acreage lots east of Interstate 35, a bathroom addition can also mean connecting to a septic system that was sized for the original house. We check tank capacity and drain field setbacks before we quote, because adding a bath to a septic system the county deems undersized can require a new drain field, and that changes the number significantly.
What the job involves
We open walls to locate existing supply and drain lines, frame the new bath, run new PEX and PVC, and set the fixtures you’ve chosen. On slab foundations, which are standard across Cibolo, we cut the concrete carefully and patch it so the finished floor sits level. We then tile, set the vanity, and trim out with the same care we’d use in our own homes.
Typical Cibolo bathroom addition timeline
Plan on three to five weeks from first cut to final caulk. Inspections happen at rough-in and after finish work, and we handle scheduling with the relevant authority, whether that’s the City of Cibolo or Guadalupe County, depending on where your lot sits. We’ll also walk you through Cibolo’s stormwater rules if the addition increases roof area, which often triggers a review even on a bathroom that doesn’t touch the ground floor.
Bedroom Addition Contractor in Cibolo
A Bedroom Addition Contractor in Cibolo builds extra sleeping space for growing families, aging parents, or a rental suite that stays within the law. In Cibolo, a standard bedroom addition with a closet and egress window costs $45,000 – $85,000, with larger primary-suite additions on acreage lots reaching $100,000 or more when they include a bath and walk-in closet. What changes the price here more than anything is the foundation: clay-rich soils across Cibolo mean we often need deeper piers or additional grading to prevent movement over time.
For homes in older pre-1990 properties on septic, adding a bedroom triggers a county review of the septic permit. The rule of thumb in Guadalupe County is that the system must be rated for the increased bedroom count, and if it isn’t, you’re looking at either a system upgrade or a variance. We identify that early, before drawings are finalized.
Bedrooms on septic: what to check first
Your septic permit lists how many bedrooms the system was designed to serve. If you’re adding a fourth bedroom on a system rated for three, the county will require an evaluation, and the cost for a new aerobic system in Cibolo can run $15,000 – $25,000 on top of the addition itself. We pull the records and include that line item in your written price, so it doesn’t surface as a surprise line item after crews arrive.
Foundation on Cibolo clay
Cibolo soils expand and contract with rain and drought. We size footings and piers for that movement, which sometimes means an engineer’s letter and deeper concrete than a builder might pour in San Antonio’s rockier terrain. It adds a few thousand dollars to the job, but it prevents cracks in the slab and the drywall above.
Trusted Brands We Service in Cibolo
We build with materials and systems that hold up to Cibolo’s heat and humidity, and we work directly with brands like James Hardie for siding and trim, Abodu and Cover for prefab ADU structures, and Tuff Shed for detached shells that convert well into finished suites. Because we stock common components for these systems and know their installation requirements, Cibolo homeowners aren’t waiting on parts that a general contractor would have to special-order. That matters when you’re trying to keep a project on schedule between spring storms and the August heat.
Common Home Addition Contractor Problems We See in Cibolo Homes
- Stormwater compliance on new impervious cover. Cibolo’s location over the Edwards Aquifer Recharge Zone means any addition that increases roof area, driveway, or patio space can require a stormwater plan with features like rain gardens or permeable pavers. We’ve seen projects in neighboring Schertz sail through with no review that stall here until low-impact development features are added.
- Septic systems on older acreage lots. Many pre-1990 Cibolo homes east of town run on septic, not city sewer. Adding a bedroom or bath can trigger a septic capacity review, and running a new sewer line where the city has extended service can cost tens of thousands, so we verify sewer availability on the first site visit.
- HOA restrictions in newer subdivisions. In Turning Stone and Falcon Ridge, some covenants restrict separate rental units or visible exterior changes. We’ve successfully converted attached garages into private suites while keeping the outside elevation unchanged, which keeps families in compliance without sacrificing the space they need.
- Clay soil movement under new foundations. The expansive clays common in Cibolo shift through wet and dry cycles. A foundation sized without accounting for that movement can crack within a few years, so we spec piers and drainage accordingly, and we include a grading plan that moves water away from the new footing.
Pricing for Home Addition Contractor in Cibolo, TX
Here’s what we tell Cibolo families before they commit. A bathroom addition typically lands between $35,000 and $65,000. A bedroom addition runs $45,000 to $85,000. A garage conversion into a living suite falls in the $55,000 to $95,000 range, and a full second-story addition starts around $120,000 and can reach $250,000 or more depending on structural work. Detached ADUs on larger lots, especially those with septic and stormwater requirements, generally run $180,000 to $350,000. The variables are real: foundation depth on clay, sewer versus septic, HOA constraints, and how much stormwater mitigation Cibolo requires for your specific site. We walk the property, review the plat and septic records, and hand you a written price with every line item before you sign anything. Call (210) 981-6358 to schedule that free estimate. You won’t get a range from a call center; you’ll get Ben Ortega or a member of his Cibolo team.
We Also Serve Cities Near Cibolo
Our crews work throughout the corridor, from Cibolo north to New Braunfels, south through Universal City and into San Antonio, and east toward Floresville. If you’re on the edge of Cibolo and wondering whether your lot falls in our service area, call us and we’ll confirm on the spot. Dispatch and scheduling are coordinated from our San Antonio office, but the crew that walks your property knows Cibolo’s roads, HOAs, and permit offices firsthand.
Serving Cibolo, TX - Our Local Coverage Area
We’re based in the Cibolo 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 Home Addition Contractor in Cibolo
Yes. Guadelupe County requires that your septic system be rated for the number of bedrooms the home will have after the addition. If you’re adding a bedroom or any living space that increases occupancy, you’ll need a septic evaluation and possibly a system upgrade or variance, which can add $15,000 – $25,000 or more to the project cost. We pull the existing permit and confirm capacity before we quote. Call (210) 981-6358 and we’ll check your records at the first site visit.
Cibolo requires on-site stormwater controls for additions that increase impervious cover beyond the existing footprint. That usually means a rain garden, permeable pavers, or a detention feature sized to the new roof area and any added paving. The requirement comes from the city’s location over the Edwards Aquifer Recharge Zone, so it applies even to a single bedroom bump-out. We include the design and installation in your written price rather than treating it as a surprise change order.
Yes, if you keep the exterior elevation unchanged and don’t alter the front facade. In Turning Stone, HOA covenants often restrict visible changes and separate rental units, but converting an attached garage into a private suite while keeping the original garage door exterior intact has worked for homeowners we’ve served there. We added a ductless mini-split for humidity control and a permeable paver walkway to meet Cibolo’s stormwater rules, and the HOA took no action. We can’t guarantee every HOA will behave the same, but we know exactly what triggers enforcement in Cibolo’s newer subdivisions and we design around it.
Cibolo’s expansive clays swell when wet and shrink in drought, which causes movement under shallow footings. We spec deeper piers or a reinforced slab with proper drainage for every addition, and we often include an engineer’s letter for city or county permits. That adds a few thousand dollars to the foundation scope, but it’s the difference between a slab that stays put and one that cracks in five years. The cost is baked into our written price, not added later.
It’s often less expensive per square foot on acreage, but the total project cost can be higher because of lot work. You’re dealing with longer material hauls, septic and well setbacks, and grading that a city lot doesn’t require, plus Cibolo’s stormwater controls on any new impervious surface. A detached ADU on Cibolo acreage typically runs $180,000 – $350,000 once all site work is included. Inside the city limits, a smaller backyard cottage might cost less overall even at a higher per-foot rate because the infrastructure is already there. We scope the full lot before quoting, so the number reflects your actual site, not a template. Call (210) 981-6358 for an exact figure.
Written by Ben Ortega, Owner at Seedling ADU San Antonio, serving Cibolo and the surrounding corridor.
