Home Additions

Home addition design and construction expands the square footage of your home, creating stunning beauty and value. Addition contractor projects include master bedroom additions, kitchen bump out additions, bathroom additions, sunroom additions, porch additions, attic additions, 2nd story additions, pop up additions, and more.

Hammer Design Build Remodel will develop and coordinate the architecture and design planning to convert your existing home into a stunning space for your whole family. Your happiness, guaranteed!

What are the benefits of a home addition?

The benefits of a home addition not only include receiving a high end renovation to meet your aesthetic and practical needs, but you’re also adding value to your home that offers a great return on investment.  Washington DC and the surrounding counties are a strong, central hub for home appreciation, so any addition to square footage can be beneficial.  Plus, you get to make the space exactly how you want it based off of how it will be used and your aesthetic preferences. 

What does a home addition cost in Washington DC?

Home additions come in a few basic types to address homeowners' needs for living space, cost, and style.  The following are different types of additions in Washington DC priced according to older homes with aging plumbing, electrical systems, settlement, etc issues. on the higher end and projects in newer homes to be on the lower end of the indicated figures.

Bump Out/One Story Addition (type of room involving no plumbing):  $100k-$200k

Multi Story Addition:  $200k-$350k

Additional Story/Level:  $150k-$300k

What is the advantage of hiring a design build firm in DC?

The most obvious advantage of hiring a design build firm is dealing with one company for the duration of your projects from start to finish. Things tend to go more smoothly when there are less parties involved and when you work with a design build firm in DC, you don’t have to work with outside designers or project managers. With all construction parties being on the same team, it brings total accountability to the firm.


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We are searching for a Residential Project Designer to join our growing team! Do you love all things residential design? Do you delight in coordinating the perfect tile patterns and detailing the perfect millwork and cabinetry layouts? If you are passionate about residential design and organizing and ‘making your mark’ on a wide range of high-end design and build projects, Hammer might be the right fit for you!

Hammer is a fast-growing residential design-build company, serving the Washington DC Metro region with high-end renovations such as additions, kitchens, bathrooms, and whole homes.

The Project Designer is critical to our business. You will have a direct impact on the success of our individual projects and the company as a whole. You will lead, influence, and design your projects’ finishes, fixtures, and final architectural elements. So if you’re highly motivated and love to make an impact through your design and working with people, click the link in our bio to learn more about this opportunity!

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