Gill Construction offers ADU building services in Harker Heights, Belton & Temple, TX. With 50+ years experience, they build detached ADUs, garage conversions & in-law suites, backed by a 5-year workmanship warranty.

Gill Construction – ADU Contractor in Nolanville, TX

About Gill Construction

ADU Construction Services by Gill Construction

Gill Construction offers accessory dwelling unit (ADU) building services for homeowners looking to add functional living space to their property. Whether the goal is to house aging parents, accommodate guests, or generate rental income, Gill Construction handles the process from planning through to completion. They serve areas including Harker Heights, Belton, Temple, and surrounding communities in Texas.

As an experienced ADU contractor, Gill Construction manages every aspect of the project — from navigating local zoning regulations and permit applications to final inspections and finishing details. Their team brings over 50 years of combined experience to each build, with more than 100 completed projects to date.

Gill Construction is fully licensed and insured, and they back their work with a 5-year workmanship warranty. Each project is approached individually, with pricing tailored to the specific scope, size, and materials involved.

Types of ADUs Gill Construction Builds

Gill Construction works on a range of ADU types, including:

  1. Detached ADUs — standalone backyard cottages or casitas built on the same lot as the primary residence
  2. Garage conversions — transforming an existing garage into a livable dwelling unit
  3. In-law suites — private living spaces designed for family members who need proximity but also independence
  4. Basement conversions — repurposing existing below-grade space into a functional unit
  5. Granny flats and guest units — smaller, self-contained spaces suited for extended family or short-term guests

Garage conversions and basement conversions are often a more cost-effective route, since the basic structure is already in place. Gill Construction helps property owners assess whether their existing structures qualify and guides them through the permitting process accordingly.

Most single-family residential properties can qualify for an ADU, though local zoning rules will determine eligibility. Gill Construction reviews each property to confirm it meets the necessary requirements before work begins.

The timeline for an ADU project varies depending on design complexity, permitting, and scope. Typically, projects take several months from start to finish, covering plan review, utility connections, and final inspections. Gill Construction works to keep the process moving efficiently throughout.

Materials and Additional Upgrades

Gill Construction works with a selection of established manufacturers to ensure durability and quality in their builds:

  1. James Hardie — fiber cement siding suited to Texas weather conditions
  2. Andersen Windows — energy-efficient windows designed to reduce utility costs
  3. USG Sheetrock — reliable drywall for solid interior walls
  4. Sherwin-Williams — quality interior and exterior paints
  5. GAF Roofing — roofing systems built to handle demanding weather

Many homeowners also use the ADU build as an opportunity to address other property improvements at the same time. Common additions include solar panel installations, landscaping improvements, exterior refreshes, driveway expansions, and smart home features such as lighting controls, thermostats, and security cameras.

On the financial side, adding an ADU can increase a property's value and may also affect property taxes. Gill Construction helps clients understand these implications so they can make informed decisions. Financing options, including renovation loans, are available to assist with construction costs.

Gill Construction's process is straightforward: they collaborate with the homeowner on design and planning, manage the build with attention to detail, and deliver a completed space ready to use. Their focus is on doing the work correctly the first time, reducing the likelihood of issues further down the line.

Services

Gill Construction performs the following services

  • Architecture & Design
  • Permit Specialist
  • Construction
  • Feasibility & Site Assessment
  • Finishing & Fit-out

Gill Construction Reviews

Sam

2026-03-09
"I needed my fireplace surround insulated to alleviate cold air coming through fireplace insert vents after taking down my chimney stack to below the roof line and having an electric fireplace insert placed. I called Gill Construction and they were able to do that for me! The gentlemen he sent to do this were so professional and nice and cleaned up the area after they were done! A great company either great people."

B Wadsworth

2026-02-20
"Our experience with Gill Construction was nothing less than excellent. From day one when we contacted their office until the very last day of completion of our home improvement project. The communication with Steven Gill and the main office was always clear , concise, and available. They are extremely organized and planned out our project with us in precise detail before giving us the estimate and moving on to materials. We were provided life like images of what our project would look like once completed and they were quite accurate. Once construction began Steven and his various contract partners communicated to us daily what was going on, what was completed, and even sent images of the project every evening. They were flexible and allowed for us to make changes along the way without any real sidetracking or heartache. Steven was on site checking work done almost every single day while the project was in progress. He made sure everything was done professionally and correctly. The materials used on our home were of high quality and the craftsmanship is to a very high standard. All personnel associated with this institution had excellent communication skills and positive attitudes throughout the entire process. We were never made to feel like we were ever getting in anyones way or inconveniencing anyone. We are very pleased with our final product and will ask Gill Construction to help us with future projects. We receive compliments on our home addition all the time. Our family has enjoyed it since completion. One last comment would be that they do the best they can to meet the timeline given at the beginning of the process. They are very friendly, helpful, and professional. I highly recommend them to anyone."

Meg A

2026-02-02
"The whole team at Gill Construction were fantastic to work with! They kept me informed with timelines and schedules so I could be aware of everything that was happening. Matt, German, and all the different teams were excellent and I would highly recommend using Gill Construction for any future projects! Friendly, efficient , knowledgeable, and reliable! Their expertise helped us get our house ready to put on the market and we were able to find a buyer immediately! I wish we had called them sooner so we could have enjoyed a few years of added functionality and beauty before selling! They installed a beautiful new sliding door and storm door, replaced the motor and electronics on our garage door, and installed a new Bluetooth doorbell to replace our dated, broken bell. We definitely plan on working with them again when we buy our new home!"

Ken Trebus

2025-11-25
"Gill Construction did a project for us which involved replacing a tub with a big senior friendly walk in shower. They also converted the old shower space into a storage area with shelves , painted the walls and trim, installed new luxury vinyl plank flooring, and installed grab bars, medicine cabinets and various other bathroom accessories. It took about 2 weeks start to finish. While it was somewhat inconvenient being without our bathroom it was worth it because everything was done with quality and attention to detail. The company's workers were hard workers and respectful of our house. All this and a price better than the shower in a day companies. We would definitely recommend Gill Construction to others based upon our experience."

Bernadette Bautista

2025-11-04
"Gill Construction was the only company out of the several I contacted that responded to my inquiry. Their admin Annie is great! Steven Gill came out to discuss my project and was easy to talk to. I had Gill Construction create a laundry closet off my dining area, and reverse the direction of the washer and dryer that had been accessed in the garage. They removed the wall between the garage and dining room, moved the plumbing and electric, added closet walls, raised the flooring, built shelving, added lighting, closet doors and reinstalled the wd. I also had them enlarge the doorway to the garage to meet ADA standards. Steven Gill was very responsive to my questions and requests. Their online system for communicating progress daily was great. The crew members were professional and courteous. Fabrice set up the plastic sheeting to keep the construction dust out, and was great with the aesthetics and final details and cleanup. The closet blends in very nicely with the kitchendining area. Thanks to Steven and the crew, I am enjoying the convenience of doing laundry inside my house!"

Specifics

Licensed

Opening hours

Monday 8:00AM - 4:30PM
Tuesday 8:00AM - 4:30PM
Wednesday 8:00AM - 4:30PM
Thursday 8:00AM - 4:30PM
Friday 8:00AM - 4:30PM
Saturday -
Sunday -

Location

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