When your home has everything you want except enough room, a room addition can be a practical alternative to moving. Whether you need a larger kitchen, a new bedroom, a home office, a bathroom, or another comfortable living space, GDK Construction, Inc. can help you plan an addition that works with your existing home rather than looking like an afterthought. With more than 40 years of construction experience, we can help you work through the layout, materials, permits, and other practical decisions that come with expanding an existing home.


Room additions can take many forms, depending on what your property and household need. GDK Construction, Inc. can help plan the room’s size, layout, materials, and construction requirements before work begins.
GDK Construction, Inc. can help with projects such as:
Call (815) 473-8498 today to discuss your room addition project with GDK Construction, Inc. and get experienced guidance from the planning stage forward.
Adding onto an existing home requires an understanding of how new construction connects to what is already there. GDK Construction, Inc. brings more than 40 years of hands-on construction experience to the planning and building process, with owner Gary Johnson remaining closely involved in projects.
A successful addition starts with understanding the scope, structure, layout, and practical requirements of the project. We take the time to discuss how you want to use the new room, review the existing home, and work through materials and design considerations before construction begins.
Room additions can involve more than construction alone, including permits, materials, scheduling, and inspections. Our team coordinates the project details and helps you understand what is needed so you are not left trying to figure out each requirement yourself.
You don't need to have every detail figured out before contacting us. We can help you compare options, discuss your budget and goals, and determine whether an addition is the right way to create the space you need.
A room addition can be a practical option when your existing layout no longer provides the space or function you need. We can review your home and discuss your plans to help you determine whether adding a room makes sense for your Joliet project.
We can build dedicated spaces such as bedrooms, bathrooms, home offices, family rooms, and other rooms based on your needs and property. We can also discuss bathroom remodels, basement remodeling, or other work that may make sense alongside the new room.
Room additions typically require permits and must meet the requirements of the Joliet Building Department. GDK Construction, Inc. can help with obtaining the necessary permits and coordinating the requirements that apply to your project before construction begins.
Yes. During an in-home consultation, we can review the existing home, available space, structure, and your plans for the new room. Our experience allows us to advise you on practical options and identify construction considerations before you commit to the project.
The cost depends on factors such as the size and location of the room, materials, structural work, utilities, and the complexity of connecting it to the existing home. Once we understand the scope of your project, we can provide an estimate based on the work actually required.
Yes. A bathroom can be included as part of a room addition when the home’s layout and existing plumbing make it practical. We can review the project requirements and discuss the best way to create a functional new space.
Yes. GDK Construction, Inc. can manage the construction process, including materials, crew coordination, and the work required to complete the new room. We stay involved throughout the project and keep you informed as the work progresses.
If your existing home is starting to feel too small, you may not need to leave the neighborhood you love. Why not explore a room addition that gives your Joliet home the space and function you need?
Call (815) 405-3424 to schedule a consultation and request a free estimate for room additions in Joliet, IL.