11 Best ADU Builders in Indianapolis, Indiana

Verified ADU contractors and builders in Indianapolis, IN

Showing 111 of 11 listings

American Construction Co

Specializing in garage-to-living-space conversions throughout Indianapolis, this contractor transforms underutilized garages into functional rooms that expand your home's usable square footage and value. Whether you're envisioning a guest suite, home office, or recreation room, their expert team handles design, permits, and construction to bring your vision to life.

+1 317-925-9647
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Garage Living Indianapolis

Transform your garage into functional living space with expert garage-to-living-space conversions tailored to Indianapolis homes. Our specialized team handles everything from design to completion, creating comfortable bedrooms, home offices, or recreation areas that add value and livability to your property.

+1 317-386-6090
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Garage Theory

Transform your Indianapolis garage into a functional living space with expert conversion services tailored to maximize your home's potential. From design through completion, we specialize in turning underutilized garages into beautiful bedrooms, home offices, studios, and more.

+1 317-296-7441
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Green Men Restoration Group

Transform your underutilized garage into functional living space with expert conversion services in Indianapolis. From planning permits to final finishing, our team specializes in creating beautiful garage-to-living-space renovations tailored to your home's unique needs.

+1 317-339-0213
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Hoosiers GC LLC

Transform your underutilized garage into functional living space with expert conversion services tailored to Indianapolis homes. Our experienced team specializes in garage-to-living-space renovations, handling everything from structural modifications to finishing touches that maximize your property's potential.

+1 317-721-6505
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Indy Mod Homes

Specializing in accessory dwelling units throughout Indianapolis, this contractor transforms properties by building separate living spaces that increase home value and provide flexible housing options for families or rental income. From initial design through final construction, they handle every aspect of ADU development tailored to your property's unique needs.

+1 317-590-5561
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Innovative Garages

Transform your Indianapolis garage into a functional living space with expert conversion services tailored to maximize your home's potential. From design to completion, we specialize in turning underutilized garage areas into beautiful bedrooms, home offices, or recreational spaces.

+1 317-272-5163
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Insta Pro Construction

Transform your Indianapolis garage into a functional living space with expert conversion services tailored to maximize your home's potential. From design to completion, we specialize in converting garages into bedrooms, home offices, studios, and more.

+1 317-771-8720
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Integrated Modular Construction (InMod)

Specializing in accessory dwelling unit construction throughout the Indianapolis area, this modular builder delivers efficient, cost-effective ADUs that maximize your property's potential. From design through completion, they provide streamlined building solutions tailored to Indiana homeowners seeking additional living space or rental income.

+1 317-569-9969
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The Heartland Builders

Specializing in garage-to-living-space conversions throughout the Indianapolis area, this contractor transforms underutilized garages into functional rooms that add value and comfort to your home. From insulation and climate control to flooring and finishing touches, they handle every detail of your garage conversion project with professional expertise.

+1 317-420-2455
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WERK | Building Modern

Transform your Indianapolis garage into functional living space with expert conversion services that maximize your home's potential. From design through completion, we specialize in converting garages into bedrooms, home offices, and entertainment areas that seamlessly integrate with your existing home.

+1 317-652-2828
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Frequently Asked Questions — ADU Builders in Indianapolis

How much does it cost to hire an ADU builder in Indianapolis?

ADU construction costs in Indianapolis, Indiana vary widely depending on size, type, and site conditions. Detached ADUs typically range from $150,000–$400,000+, while garage conversions and attached ADUs can be more affordable. Contact multiple builders in Indianapolis to get accurate quotes for your specific project.

How long does it take to build an ADU in Indianapolis?

In Indianapolis, the ADU construction timeline typically ranges from 6 to 18 months from permit application to move-in. Permitting alone can take 2–6 months depending on Indiana local regulations. Prefab and modular ADUs often have faster timelines than site-built units.

Do I need a permit to build an ADU in Indianapolis?

Yes, a building permit is required for ADU construction in Indianapolis, Indiana. Your ADU builder will typically handle the permit application as part of their service. Indiana has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.

What types of ADUs can be built in Indianapolis?

Common ADU types in Indianapolis include detached ADUs (backyard cottages), attached ADUs, garage conversions, basement conversions, and prefab/modular ADUs. The best type for your property depends on lot size, zoning, and budget. A local Indianapolis ADU builder can advise on what's allowed on your specific parcel.