General Contractor

Room Additions in Westmont, IL

Pro One Builders Group builds custom room additions for Westmont homeowners who need more living space.

Adds dedicated square footage that matches your home's existing structure and roofline
Keeps your family in Westmont's established neighborhoods instead of forcing a costly move
Increases usable living space for remote work, growing families, or aging-in-place needs
Improves resale position in a competitive Westmont housing market where move-in-ready homes sell above list price
Single design-build contract means one point of contact from plans through final inspection
New framing and insulation in the addition brings that section of the home up to current Illinois energy and building codes

A newly completed single-story room addition on a mid-century single-family home in Westmont, Illinois, with matching exterior siding and a roofline that ties into the original structure. The addition includes a large window facing the backyard and a clean transition at the interior doorway connecting to the existing living space.

Expert Room Additions in Westmont, IL

Room additions in Westmont give homeowners a practical way to gain space without leaving an established neighborhood. Pro One Builders Group handles the full scope of work under one design-build contract. That covers structural planning, framing, insulation, electrical, drywall, and finish work. We tie the new space into your existing home so the addition reads as part of the original structure, not a bolt-on. Westmont's housing stock skews toward post-war and mid-century single-family homes. Many of these homes were built with smaller footprints that no longer fit how families live and work today. A well-planned addition solves that without the cost and disruption of moving. Whether you need a bedroom, a home office, a family room, or an expanded primary suite, we design the layout around your lot, your roofline, and your daily routine. Contact Pro One Builders Group to schedule a site visit and get a clear scope for your Westmont addition project.

What's included

Adds dedicated square footage that matches your home's existing structure and roofline
Keeps your family in Westmont's established neighborhoods instead of forcing a costly move
Increases usable living space for remote work, growing families, or aging-in-place needs
Improves resale position in a competitive Westmont housing market where move-in-ready homes sell above list price
Single design-build contract means one point of contact from plans through final inspection
New framing and insulation in the addition brings that section of the home up to current Illinois energy and building codes

28+ Years of Experience

500+ Projects Completed

Design-Build Expertise

Full-Service Remodeling

Licensed General Contractor

Local DuPage County Specialist

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FAQ

Room Additions FAQ

Common questions about room additions in Westmont, IL.

Can Pro One Builders Group add a room to my older Westmont home?

Yes, we work with Westmont's post-war and mid-century single-family homes regularly. We assess the existing foundation, framing, and roofline before finalizing any addition plan.

What types of room additions does Pro One Builders Group build in Westmont?

We build bedroom additions, home office additions, family room expansions, and primary suite additions in Westmont. The right type depends on your lot size, zoning setbacks, and how the new space connects to your existing floor plan.

Does a room addition in Westmont require drawings or structural plans?

Yes, the Village of Westmont requires complete sets of drawings for addition projects, and structural elements must be stamped by an Illinois-licensed structural engineer or architect. We coordinate the required documentation as part of our design-build process.

Will the addition match the look of my current Westmont home?

We design the addition to match your home's existing exterior profile, roofline, and interior finishes. A well-integrated addition should not look like a separate structure from the street.

Is a room addition a good investment for a Westmont property?

Adding functional square footage to a Westmont home can strengthen its position in a competitive local market where homes regularly sell above list price. The value impact depends on the addition type, quality of construction, and how well it fits the home's existing layout.

How do I get started with a room addition project in Westmont?

Contact Pro One Builders Group to schedule a site visit at your Westmont property. We review your lot, discuss your space goals, and put together a clear project scope before any work begins.

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Call (630) 796-2168

Client Reviews

What DuPage County homeowners say.

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Had an amazing experience with ProOne Builders!! Had my master bathroom suite remodeled, first time for me doing a major project like this so of course I had lots of questions but the were very patient with me but at the end they turned my vision into reality.. Luke, Teresa, Bill and there team did an amazing job…

Fantastic experience doing a full house remodel with Pro One. We were very impressed with their work - everything from flooring to drywall to tile work to plumbing was all done to perfection. Pro One kept us well informed, communicated daily and finished the project within the timeframe they predicted. Additionally, they have a fantastic designer on staff, Daria, who was incredibly creative, produced beautiful designs and was willing to work within our budget. She found great fixtures, stone, etc at great prices. We loved working with Stephan, Greg, Roman and the rest of the team. Honestly couldn’t be happier! Highly recommend.

We had an amazing experience with ProOne for our two bathroom renovation projects! Their commitment to quality, detail, and craftsmanship made the process very smooth and exciting. They never once hesitated to do the right thing for the project, whereas many contractors think first about their bottom line. The project superintendent was on site everyday checking in with us, clarifying details, and checking in with the team. ProOne will not be the cheapest or most expensive contractor you get to bid on your project, but they may be the most professional and results driven. Highly recommend!

I have now used Pro One for two major renovation projects. They are highly professional, courteous, clean, careful, and caring. It’s not often you hear of people really liking their contractors, but we have had such an excellent experience that I try to spread the word when I can. I have to commend them for also being patient with me. I have my own ideas and opinions and they take it all in stride. Thank you guys, truly, for partnering with us and giving us 100% of your focus when you are working on our projects. You are always communicative, responsive, and helpful. Until the next project.

I would highly recommend Pro One Builders Group. They helped me with a dining room refresh - from design to build to installation to cleanup. The team is so communicative, so organized and so professional. They found creative ways to work within our budget without missing on the quality. This is our second home project with Pro One and won't be our last.

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Proudly Based in Westmont, IL

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Phone

(630) 796-2168

Hours

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