Logo for 15 Construction LLC with a yellow and white house graphic and bold lettering.

One-Stop Shop
Home Additions

Serving Indianapolis and Surrounding Areas

  • Peace of Mind: Start-to-Finish Project Coordination

  • No Surprises: Clear costs, scope, and schedule

  • Quality Backed: Integrity and excellence driven plus workmanship warranty

Our Process

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Consultation

Call in or request an appointment online.

Blueprint or architectural plan of a house with a pencil and a rolled-up scroll.

We design with you, create a proposal, review with you, and finalize.

Design & Planning

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Construction

Work begins on your project.

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Enjoyment

Congratulations on your home improvement!

    • Free estimate visit: We meet on-site at no cost to understand your goals, scope, and timeline.

    • Feasibility range: After the visit, we provide a realistic budget range so you can decide if the project is in the right neighborhood before going deeper.

    • Next step (design + detailed quote): If you’re comfortable with the feasibility range, we move into design + scope development (with a design fee that varies by project). Once the design/scope is defined, we deliver a detailed quote based on those specifics.

    • ISI comes from Proverbs 27:17: “As iron sharpens iron, so one man sharpens another.”

    • It reflects how we work: accountability, continuous improvement, and pushing for better outcomes

    • We aim to be a true partner through the remodel:

      • Educate you on the process and set expectations up front

      • Clear, consistent communication throughout the project

      • Quality work done the right way so you can enjoy your finished space with confidence

    • 1-year workmanship warranty on all work performed by ISI Construction and our trade partners

    • Covers defects in workmanship

    • Does not cover damage caused by vandalism, homeowner neglect, or theft

    • Many products include manufacturer warranties (varies by item)

    • If a material defect arises, we can help coordinate with the manufacturer toward a resolution

    • We do walkthroughs throughout the project and again at final completion to note touch-ups/punch items and address them so you can enjoy the finished space with confidence.

SERVICES

We do it all. From simple bathroom renovations to whole interior + exterior overhauls.

Interior Remodeling in Danville, Indiana

Interior Remodeling

  • Kitchens

  • Basements

  • Bathrooms

  • Whole Home

  • Interior Reconfiguration

  • Custom Built-ins

    • Dry/Wet Bars, Theaters, Gyms, Golf Simulators

Learn more
Comparison photo of two houses side by side, showing the same house before and after renovations, with the left house featuring new white stone siding and the right house with older brick and beige siding.

Exterior Remodeling

  • Roofing

  • Siding

  • Windows, Doors

  • Additions

  • Outdoor:

    • Decks/ Patios

    • Outdoor Kitchen

Learn more

Featured Projects

Addition, Windows

Interior Remodel

Interior + Exterior Remodel

Everything You Need

We know how frustrating it is to work with Indy contractors who don’t provide timely, quality work.

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One-Stop Shop

We provide a network of highly skilled contractors for every part of your project.

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Integrity in Every Decision

We’re honest about budget, timelines, and what it takes to do the job right.

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Clear Communication

You always know what’s happening, what’s next, and who’s responsible.

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Values Rooted in Faith

Christian faith shapes how we treat people, make decisions, and serve the families we work with.

Hear From Our Clients

  • "They were very punctual on getting back with me on Thumbtack. Then, after an appointment was made, they were on time. Everything was explained to me and I felt very comfortable going with them. The repair was made and I was glad they did the repair. Thank you!!"

    -Karen O.

  • "Our kitchen remodel project went extremely well. The coordination was excellent from ISI. They were here when they said they would, had the expertise to do the variety of work from ventilation, plumbing, tiling, to electrical. I will use them again for any other projects that come up."

    -James B.

  • "Blessed to know these guys. I’ve been in the trades for over 30 years and these guys are at the top of my list, I enjoy working with people of integrity!"

    -Larry P.

  • "Trustworthy, respectful, diligent, conscientious, and skilled. These are the types of guys you want to fix your home issues."

    -Keith Finley

  • "We are super impressed with the kitchen update ISI did for us this fall (new countertops, sink, backsplash, light fixture, etc). Tony was a pleasure to work with – he was an exceptional communicator and treated our home with respect. Will definitely be recommending ISI to local friends/family and using again for our home improvement needs in the future."

    -Suzanne E.

  • “I have used ISI for several projects and plan to use them exclusively as they are the best with communication and realistic timelines. I’ve worked with several different members of the company and everyone has been professional and courteous. Great company all around.”

    -Josh M.

  • "Came on time and did a wonderful job. Nathan D. installed new kitchen lighting and repaired the 120 year old plaster ceiling where the former light was. Will definitely be using ISI Construction in the future."

    -Kimi-Scott M.

  • "We had a bathroom remodel, and every employee that came to our house was courteous and did a great job. I would highly recommend them, and will use them again in the future."

    -Nancy P.

Whether it’s a residential, commercial, or investment property, we are passionate about being the partner you need.

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