Custom Sunroom Additions Across Chicagoland’s Suburbs
Sunroom additions, screen rooms, and full room additions, designed around your home and built as new construction from the foundation up. If you are planning a project that adds real living space, you are in the right place.




About Us
TimberBuilt Inc is a family owned and operated company that specializes in building screen rooms, sunrooms and family room additions since 2002. TimberBuilt Rooms is headquartered in St. Charles, IL. Our staff consists of engineers, designers, carpenters, electricians and roofers. We do it all to build the room of your dreams at an affordable price.
What we have done to the room addition industry is truly revolutionary. We created simple designs keeping your project affordable while providing elegant structures customized to your home and your personal taste. TimberBuilt Rooms builds using conventional materials of only the highest quality. We understand the impact a new room has on you home value, so we take extraordinary steps to match color, trim, siding, and roofing to your home.
We strive to make your project fun and stress free. The TimberBuilt Rooms family takes extra steps to insure the construction process goes as planned by employing all the trade skills within the company. This allow for better control of project time and most importantly, consistent quality.
Our Services
SCREEN ROOMS
TimberBuilt™ Screen Rooms are built for those who truly want to experience the fresh air outdoors in a room that not only looks beautiful but is also built strong.
3-SEASONS SUNROOMS
Multi-Season Sunrooms are perfect for the fair-weather seasons. You can enjoy the great outdoors inside your home!
ALL-SEASON SUNROOMS
Experience the benefits of having a TimberBuilt™sunroom all year long. Designed with you in mind, TimberBuilt™ Rooms are built to last.
CUSTOM ROOM ADDITIONS
You can finally add the extra room you have been needing in your home. Best of all, the new TimberBuilt™ room can be designed to fit your budget.
What to Expect When You Work With Us
A room addition is a major investment, and the process should feel like one:
- An in-home visit to measure, assess the site, and talk through how you will use the room
- Drawings you can review and adjust before construction begins
- A St. Charles showroom where you can see windows, finishes, and construction details in person
- One project lead from the first meeting through completion
- A final walkthrough before the job is called done
TimberBuilt focuses on new additions rather than repairs, screen replacements, or siding work. That focus is what keeps our crews on the projects they do best.
Request a Call Back
Finally ready to add on that addition to your home? Let’s talk about your needs and how we can help you get it done!
Testimonials




Sunroom Additions in Chicagoland’s Suburbs
Most of our work is concentrated in the western and northwest suburbs, in communities like St. Charles, Geneva, Batavia, Elgin, Naperville, Wheaton, Lombard, Roselle, Barrington, and Crystal Lake. Being based in the Fox Valley puts Kane, DuPage, and McHenry counties within easy reach for site visits and project check-ins, and our service extends across the remaining counties listed below.
Frequently Asked Questions
What Is the Difference Between a 3 Season Room and a 4 Season Room?
A 3 season room is built for comfortable use from spring through fall, usually without full heating and cooling. A 4 season room, which we call an all-season sunroom, is insulated, heated, and cooled for year-round use and built to a higher energy standard. The right choice comes down to whether you want to use the space in January.
Should We Build a Screened Porch or a Sunroom?
A screened porch keeps you in the open air and costs less to build. A sunroom adds living space you can use for more of the year. Because TimberBuilt works as both a screened porch builder and a sunroom contractor, the recommendation depends on how you want to use the space, not on what we happen to sell.
Do Sunroom Additions Add Value to a Home?
Generally, yes, because they add finished, usable square footage. Appraisers and buyers favor additions that read as part of the original house, while rooms that look attached as an afterthought tend to recover less of their cost.
Do You Need a Permit for a Sunroom?
In nearly every suburban municipality, yes. Room additions require engineered drawings, permits, and inspections, and the requirements vary from village to village. As a home addition contractor, TimberBuilt handles the drawings and permitting so homeowners do not have to.
How Long Does It Take to Build a Sunroom Addition?
Construction typically runs several weeks once permits are issued, and permit timelines vary by municipality. Every proposal includes a realistic schedule, so you know what to expect before you sign.
Start Planning Your Addition
Call 630-443-7100 or request a call back. The first conversation covers what you have in mind, what your property will support, and whether a sunroom, screen room, or full addition is the better fit.




