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Maryland Home Addition Experts

Adding an addition to your home is a great alternative to moving into a larger home and choosing the right Maryland home improvement contractor for your project is vitally important to the project’s overall success.

Additions create the living space that your growing family needs. There are many reasons for building an addition to your home.  For example, your growing family may need an in-law suite, a master bedroom suite, or even something as original as a home entertainment room. Merrell Building can design and build the space that meets your need. Our design team works with you to create additional living space that’s not just functional but stylish and beautiful. Most importantly, when the project is complete, the outside of the additional space will appear seamless with your existing home. Let us help make your dream space possible.

Sunroom Additions

Sunroom Additions

Sunroom Additions can offer a budget-friendly alternative to a traditional house addition.  Costs for this kind of project will depend on the amount of space it adds, the location of the sunroom, extras such as electrical wiring and whether the room is heated (four-season room) or not heated (three-season room).

Bump-out Additions

Bump-out Additions

Bump-Out additions are a different kind of addition that extends a wall or a couple of walls, to provide additional square footage without building an entirely new room. You aren’t adding an entire home addition, so really take the time to consider what you’re getting. A bump out of two or three feet might not seem like a lot, but to the owner of a small kitchen, the additional 20-30 square feet makes an amazing difference.

Let us help you with any home addition project your considering, including:

In-Law Suite Additions

Sunroom Additions

Master Bedroom Additions

Master Bathroom Additions

En Suite Additions

Addition Gallery

Kitchen Additions

Garage Additions

Bump-out / Single Room Additions

Family Room Additions

Multi-Room Additions

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Throughout Maryland – Baltimore County, Carroll County, Frederick County, Howard County, Merrell Building can help transform your home.


  • Kitchens & Dining Space: Thinking beyond the rectangular closed off rooms by designing and constructing a space that flows seamlessly from one room to the next with enough room for you, your family and guests.
  • Family Rooms: We help families redefine their living spaces, making it easier to spend time together and providing a more functional and enjoyable space for all.
  • Master Suites: Your master suite is your own personal zone. We make sure it has the storage, light, counter space, walk-in closets, spa-like feeling, make-up counters, bath and shower you need to feel comfortable.
  • In-law Suites: Rather than one cramped shared space, add onto your home, creating separate spaces. This space is designed to meet your family’s individual needs with a focus on aging in place.
  • Dens and Home Offices: We create one-of-a-kind personal spaces that you can use as a traditional den or office or a space to enjoy your favorite hobby, such as a wine cellars, yoga rooms, or an entertainment room.
  • Garages: A garage home addition should fit seamlessly with the design of your home and provide the storage and security you need for peace of mind.
  • Sunrooms & Porches: If you’re looking for a way to combine indoor and outdoor living, look no further. Our designers will help you create spaces in your home that allow you to enjoy all four seasons and use the natural light to its fullest potential in your home.

Our Process

Consultation & Design

At Merrell, we are a design/build company.  This means we manage the project from beginning to end. Every home addition project with starts with an initial consultation with owner, Moses Merrell, which is no charge to our clients.  During the consultation, he will listen to your desired plan and budget for the project.  Importantly, Mr. Merrell will help identify your style, offer advice on materials, and work with you to create a realistic budget.   Then, he’ll discuss a plan to bring your vision to life.

Design Process

The next step in our process, if you choose to enter into a design agreement with Merrell Building, is the design phase. This phase typically takes about two to three weeks. During this phase, our clients work closely with our architect to create building plans and 3D renderings.  Several revision meetings take place ensuring there are no surprises with the final design. In the end, our client will have a final schematic design including floor plans, elevations, & 3D imaging.  


Once the plans have been completed, the next step of the home addition project is the building agreement.  The building agreement with Merrell Building is highly detailed to ensure there is no confusion. Together, our team and client, will the review scope of work in detail, on site. and complete a pre-construction walk-through. At that time, an initial schedule, working hours, storage of materials, hauling of debris, staging of selections, and other important items are discussed.

Prior to construction, clients are also provided with their “To-Do” list.   This details the clients responsibilities including due dates for material selections and our preferred vender information.  We connect with well-respected companies to supply our customers with top-notch, quality materials.  Our team exclusively works with suppliers who have consistent high-quality products and excellent customer service.

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Merrell Building Enterprises
Helping You Love Your Home

It’s difficult to plan a home improvement on your own. We work with you to design additional living and activity space that meets the needs of your family. We can help create the perfect space for you.

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