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Central Indiana(765) 729-7141
Form Building Company
Additions

Home Addition Contractor
across Central Indiana.

Room additions, second stories, and in-law suites that flow with the existing home. We sweat the transitions — rooflines, floor heights, and finishes — so the addition doesn't feel like one.

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What's included

How we approach home additions.

Every home additions project we run follows the same proven process — from the first conversation through the final walk-through. Here's what's actually involved.

  • 01

    Room additions

    Family rooms, primary suites, and home offices that match the original home in scale, finish, and feel.

  • 02

    Second-story additions

    Doubling your footprint without losing your yard. We engineer the load path and protect what's below.

  • 03

    In-law / accessory suites

    Private suites for parents, adult children, or guests — code-compliant and designed for long-term use.

  • 04

    Bump-outs & dormers

    Smaller-scale additions that solve a specific problem (a bigger kitchen, a real mudroom) without overhauling the home.

  • 05

    Garage additions

    Attached and detached garages, sometimes with finished space above. Sized and finished to match the home.

  • 06

    Permits & engineering

    We handle the structural engineer, permits, and inspections — and we work clean so the existing home stays livable through the build.

Service Areas

Home Additions in your city.

We're actively building home additions projects across the cities below. Each city page goes deeper on neighborhoods, local context, and recent work.

Common Questions

Home Additions FAQs.

How much does a home addition cost?

Most home additions in Central Indiana fall between $200–$400 per square foot, depending on whether you're adding to the foundation, going up a story, or extending mechanicals. We give you a detailed estimate after a site visit so the number reflects your actual home — not an industry average.

Can we live in the home during the addition?

In most cases, yes. We zone the work, dust-protect the existing home, and sequence the cut-ins to keep things livable. For larger jobs (whole-floor additions, kitchen + addition combos), we'll talk through whether a short-term move makes sense.

How long does a typical addition take?

Smaller additions (300–500 sq ft) usually run 3–5 months once permits are in. Second-story or whole-wing additions are typically 6–9 months. Design and engineering can add 2–4 months on the front end depending on scope.

Do you handle the architect and engineering?

Yes. We work with trusted architects and structural engineers across Central Indiana, or we'll work alongside yours. For most additions we recommend involving us early so the budget and structural approach line up before drawings get expensive to change.

Related Services

Other services we offer.

01

Custom Home Builders

We design and build custom new homes for families across Central Indiana. Every plan is laid out for the way you actually live — and finished with the precision and quality you'd expect from a builder who treats every project like it's their own.

Service details 02

Home Remodeling

Kitchens, bathrooms, and whole-home renovations done with true craftsmanship. We protect the parts you love and rebuild the parts that aren't working — cleanly, on schedule, and with honest expectations.

Service details
Get In Touch

Plan your home additions with us.

Tell us about your project — what you have in mind, the timeline that matters, and the budget you're working with. We'll come back with honest answers and a clear next step.