A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Katy, TX
An ADU, or accessory dwelling unit, is a second, smaller home built on the same lot as your main house. In Katy, that usually means a backyard cottage, a converted garage, or a home addition with its own entrance. The work here is shaped by expansive clay soil, hot and humid summers, and subdivision rules that vary from one neighborhood to the next. Lodgewick ADU Houston handles all three ADU paths, and every project starts the same way: a written price, a real arrival window, and a written guarantee in your hands before the first nail is driven. Call (361) 326-2313 to talk through your lot.
Why Katy Homes Are Different
Katy sits on Gulf Coast clay that swells when it rains and shrinks during dry stretches. That movement is the single biggest factor in how we detail an ADU foundation here. A slab poured without accounting for that soil will shift, and a shifting slab means doors that stick and corners that crack. We size footings for that movement and plan drainage so water moves away from both the existing house and the new structure.
Heat and humidity drive our material choices, too. Katy summers run from May through September with daytime highs regularly in the 90s, and that means an unconditioned ADU becomes an oven. We spec insulation, roof venting, and window placement for the climate, not just the lot. Many Katy neighborhoods are governed by HOAs, and communities like Cinco Ranch, Firethorne, and Cross Creek Ranch have their own rules about setbacks, exterior finishes, and even where an ADU can sit relative to the main house. We pull deed restrictions and HOA guidelines early so you’re not surprised later. Homes in Katy range from 1970s ranch houses in Old Katy to new construction in the master-planned communities west of the Grand Parkway, and each generation of construction has its own quirks when we tie in new work.
Our Main Katy Services
Katy homeowners come to us for three things: a home addition, a garage conversion, or a standalone ADU. Each has its own Katy page with the full breakdown, but here’s the short version.
Home Addition Contractor in Katy
A home addition in Katy means expanding the footprint of the house you already live in. On smaller lots inside the loop of neighborhoods near Katy Mills, that often means building up or bumping out within existing setback lines. On larger lots west of 99, there’s usually room to build out. Clay soil affects how the new slab ties to the existing foundation, and we plan that joint carefully so the two don’t move at different rates. Details on our Home Addition Contractor in Katy page.
Garage Conversion Contractor in Katy
A garage conversion, or garage turn, takes the footprint you already have and turns it into conditioned living space. That’s often the fastest path to an extra bedroom or a rental unit because the slab, roof, and walls are largely there. In Katy, the catch is usually HOA rules about parking and front-facing garages, plus the need to bring the space up to code for insulation, electrical, and egress windows. See our Garage Conversion Contractor in Katy page for the full walk-through.
ADU Builders in Katy
A standalone ADU is a fully separate small home in your backyard. In Katy that might mean a 400-square-foot studio for an aging parent or a two-bedroom unit for rental income. The foundation is everything on clay soil. We also account for utility runs, which can be longer on Katy’s larger lots. Whether it’s stick-built on site or a prefab from a manufacturer, the process starts the same way. Full breakdown on our ADU Builders in Katy page.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Katy
We work with several established ADU brands and material suppliers. In Katy, that often means our brands like Mighty Buildings for panelized prefab units, Boxabl for compact fold-out designs, and Tuff Shed for conversion-ready shells. Turnaround on a prefab order varies by manufacturer, but we confirm lead times in writing before you commit.
Pricing for ADU Company in Katy, TX
| Service | Typical range in Katy |
|---|---|
| Home addition (bump-out, 200 – 400 sq ft) | $60,000 – $120,000 |
| Home addition (second-story, 400 – 800 sq ft) | $100,000 – $220,000 |
| Garage conversion (single-car, ~250 sq ft) | $35,000 – $70,000 |
| Garage conversion (two-car, ~400 sq ft) | $55,000 – $110,000 |
| ADU (studio, 400 sq ft or less) | $80,000 – $150,000 |
| ADU (one-bedroom, 500 – 700 sq ft) | $110,000 – $200,000 |
| ADU (two-bedroom, 700 – 1,000 sq ft) | $160,000 – $300,000 |
| Prefab ADU (Boxabl Casita-style, delivered) | $80,000 – $140,000 |
| Prefab ADU (Mighty Buildings studio, delivered) | $120,000 – $220,000 |
| Site prep, foundation, and utility tie-in (ADU) | $25,000 – $60,000 |
Costs in Katy move up when soil testing calls for deeper footings, when an HOA requires specific exterior materials, or when utility runs have to cross a long lot. We put the full price in writing before work begins, and that number doesn’t change at the door.
Neighborhoods We Serve in Katy
We work across Katy, from the tree-lined streets of Old Katy to the master-planned communities west of the Grand Parkway. Our crews are in Katy most days, and scheduling usually flexes within a week or two of your first call.
- Cinco Ranch
- Firethorne
- Cross Creek Ranch
- Old Katy
- Nottingham Country
Service Area – Cities Near Katy
Beyond Katy, our crews also cover nearby cities in Fort Bend and Harris counties. If you’re just outside Katy, we regularly work in Richmond, TX, Sugar Land, TX, Stafford, TX, and Missouri City, TX. Each has its own page with local details. Scheduling is coordinated from our Houston office, and crews are dispatched to Katy daily.
Serving Katy, TX - Our Local Coverage Area
We’re based in the Katy 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 ADU Company in Katy
We can usually get your lot evaluated and a written estimate within a week or two of your first call. Permits and HOA approval in Katy typically add four to eight weeks depending on the community and scope. The timeline is always laid out in writing once we know your lot.
Many Katy subdivisions do allow ADUs, but each HOA sets its own rules about size, placement, and exterior finish. We pull the deed restrictions for your neighborhood early in the process so you know what’s permitted before you spend a dollar. Call (361) 326-2313 and we’ll check yours.
Yes. We prepare the plans, submit the permit package to the City of Katy or Fort Bend or Harris County as applicable, and schedule inspections as work proceeds. The permit fees and timeline are part of your written estimate, not a surprise add-on later.
If you’re thinking about an ADU, garage conversion, or home addition in Katy, start with a straightforward conversation and a written number. Call (361) 326-2313 for a free estimate, and we’ll put the price, the window, and the guarantee in writing before work begins.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Katy Customers Say
"The ADU came out beautiful and the permitting, which terrified me, was handled start to finish. They kept me updated every week so I was never wondering what was happening."
- Shauna Mills"Added a suite for my dad. They walked us through every cost before a hammer swung and stuck to it. The written price is what we paid, no change orders."
- Ingrid Salazar"Added a bedroom and bath for our growing family. Honest from day one about what was possible and what it would cost. Showed up when they said and the work has held up great."
- Troy Benavidez
