Home Additions
We Make Complex Remodels Feel Clear, Guided, and Manageable.
Feasibility First, Then Accurate Pricing
No-charge visit + feasibility budget range before any design fee; detailed quote created after scope is defined.
Dedicated Project Manager and Trade Coordination
One point of contact with proactive updates and on-site alignment with trades so everyone’s on the same page.
A Clear Plan, From Start to Finish
A step-by-step plan (feasibility, design, build, closeout/warranty) so you always know what’s next.
Licensed, Insured, & Proven Locally
Fully insured and backed by 60+ 5-star Google reviews.
Additions Planned Around Real-Life Needs With Clarity from Start to Finish
Our Home Additions Services:
In-law suite additions
Bedroom or primary suite additions
Family room additions
Home office additions
Expanded living areas
Second-story additions
Bump-outs that improve how the home functions
Looking to do something that is not listed? Please reach out, we’d be happy to see if we can help.
Our Home Addition Process
at a Glance
1. Connect and Consult
Schedule a visit. We walk your space, understand your goals, and provide early guidance on scope, budget, and what’s possible.
2. Plan, Design & Price
We develop your layout, guide selections, and define the full scope of your project—then gather real pricing so you can move forward with clear expectations.
Your project manager coordinates the work and keeps you informed every step of the way so there are no surprises.
3. Build and Communicate
4. Final Walkthrough & Warranty
We review the finished project with you, handle any final details, and stand behind our work.
“I am stunned by the partnership formed just from getting an estimate.”
-Sarah M., ISI Construction Client
Why Choose ISI Construction
We know how frustrating it is to work with Indy contractors who don’t provide timely, quality work.
One-Stop Shop
We provide a network of highly skilled trades for every part of your project.
Integrity in Every Decision
We’re honest about budget, timelines, and what it takes to do the job right.
Clear Communication
You always know what’s happening, what’s next, and who’s responsible.
Values Rooted in Faith
Christian faith shapes how we treat people, make decisions, and serve the families we work with.
Common Process Questions
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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 for free 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.
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We love helping you design your project and select materials that match your style and budget.
We do require a design fee for all projects ($500 - $7,500 typically. $4,250 on average, dependent on project scope).
Once the designs are complete, they’re yours to keep and use however you’d like—whether you build with us, someone else, or decide to pause. If you already have architectural plans, we’re happy to work from them and won’t ask you to start over.
“They had to try to match our tile and they did an awesome job. The new tile brings out pops of color in the bathroom My wife and I love it. - Wayne D., Bathroom Remodel
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Ranges are created from the measurements, notes, and goals discussed during your estimate visit, then run through an AI pricing model our team trained and refined specifically for feasibility analysis using real project history and current industry pricing.
That allows us to give you a more informed early range than a rough guess- all before any design fees.
If the feasibility range feels right, the next step is design, where we refine everything into a more exact quote based on finalized scope and selections.
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Cost changes can happen in remodeling when existing conditions are uncovered after work begins, such as hidden damage, outdated wiring or plumbing, or structural issues behind walls.
Changes can also come from scope adjustments, material selections, or design decisions that evolve as the project is finalized.
Because of that, we recommend planning for a 10% safety buffer above the design quote to help cover unexpected costs if they come up. It is simply a smart safety net we make clients aware of early, so there are fewer surprises later.
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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.
“We had a couple of warranty issues that they were right on top of. Extremely satisfied with the whole remodel.”
- Ralph B., Whole-Home Remodel
Where We Work
ISI Construction works with homeowners throughout the Indianapolis area and surrounding suburbs, helping them plan and complete remodeling projects with more clarity and confidence.
Whether you’re bringing new life to an older home or making a newer home feel more like your own, our approach stays the same: clear communication, honest guidance, and a well-managed process from start to finish.
Don’t see your area listed? Reach out and we’ll let you know if your project falls within our service area—we’re always happy to talk it through.
Our Service Area:
Plainfield
Avon
Brownsburg
Carmel
Fishers
Geist
Zionsville
Westfield
Noblesville
Greenwood
Client Reviews
Featured Projects
Addition, Windows
Interior Remodel
Interior + Exterior Remodel
Our Story
Frustrated with the lack of transparency and quality while working for large production builders, Joe and Tyler felt unable to enact the changes their Christian values demanded.
In April 2022, they took a leap of faith and founded ISI Construction.
Our mission is to bring integrity, honesty, transparency, and exceptional craftsmanship to your home remodel project.
“Homeowners Deserve Better.”
“Too often, in our previous roles, we saw clients being taken advantage of by contractors who cut corners or prioritized profits over quality. We knew that homeowners deserved better.
That's why ISI Construction exists – to protect clients from bad practices and deliver the remodeling experience you deserve. We are committed to providing high-quality services at a fair price, without ever sacrificing our morals or values.”
“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.