Making Your Dream a Reality Since 1989


Traditional Home Addition

Seamless Room Additions

Expand the Square Footage of Your Home
Sometimes you just need a little more space to make your home that much more functional and livable. Or perhaps you’ve just always wanted a sunroom to display your favorite p lants or enjoy some sunshine in the comfort of the indoors.

Whatever your goal, a room addition requires extensive knowledge of the building process – including understanding how to incorporate the new structure into the existing architecture. We’ve all seen those additions that stick out like a sore thumb because the contractor didn’t use the same materials or design to fit the original building.

At Castle Construction, we can help you select the right products and materials to make sure that your new addition matches your home and fulfills your desires for the space, whether it’s a master bedroom, additional bathroom, a garage or something in between.

Helping Homeowners Since 1989

Whether you’re considering a second-story addition or converting your garage, Castle Construction has the experience and equipment to handle the job. We’ll work closely with you to develop your vision for the space and then take pains to stay on schedule and within your budget.

Adding a room isn’t the specialty of most contractors, but Castle Construction has been building room additions for years. Leverage the talent of our crew for your project. We will obtain the required permits and help you understand what to expect during the process.

Being a small company means that you’ll really get to know our team. It won’t be a revolving door of new faces. There’s a reason that so many of our customers become friends!

We can assist you with any of the following:

Let’s Talk About Your Project Today

Room additions are a big investment. Castle Construction can assist you with the designing, planning and construction – eliminating the stress from the project. Learn more by calling (301) 674-5580 or fill out our online form.

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Frequently Asked Questions

How do you blend an addition to a house?
Unlock the key strategies to successfully blending a house addition. Discover how to seamlessly integrate new space with the existing structure for a harmonious and visually pleasing result.
Discover expert tips and techniques for achieving a natural and harmonious look when adding to your home. Create a seamless integration that enhances your property’s aesthetics and functionality.
The concept and benefits of a bump-out addition, an effective way to expand living spaces within your home. Learn how it can enhance functionality and aesthetics while maintaining cost-efficiency
Enhance your home addition with expert tips and ideas. Discover strategies to improve functionality, aesthetics, and overall value, making the most out of your new space.
Explore the qualities of a well-executed addition, including seamless integration with the existing structure, enhanced functionality, and improved aesthetics. Learn how a successful addition project can transform and elevate your living spaces.


I contracted with Rob for a bathroom renovation and whole house painting. The bathroom makeover took a standard late eighties bathroom and turned it into a beautiful, functional and much better integrated element of the 2nd floor. It now looks twice the size, permits two kids/adults to use the space
Prompt, caring, honest service. Mr. Morris and his crew showed up on time, did their work quickly and efficiently, did not make a mess, and were gone. I am very satisfied with the excellent job. The cost was very reasonable. I would definitely hire them again.
Castle Construction put in a new front door and storm door. They did a fantastic job. Out new trim on inside as well as the outside. Very pleased with their work and the time in which they completed the work too.