Addition Ideas for Split Level Homes From a General Contractor in Washington DC

Split-level homes were the darlings of post-war suburban development. Efficient, compact, and distinctly “modern” for their time, they offered something different from the traditional colonial. Fast forward 60+ years, and many of these homes—especially in Arlington, VA, and surrounding DMV neighborhoods—are overdue for updates.

Maybe your kitchen feels disconnected. Maybe your entryway is cramped, or your family’s outgrown the chopped-up layout. If you own a split-level home, you’ve probably realized: remodeling it isn’t like remodeling a ranch or two-story. You’ve come to the right place to find addition ideas for split level homes.

As experienced general contractors in Washington DC and Northern Virginia, we’ve helped homeowners reimagine their split-level homes into spacious, stylish, and highly functional spaces. Whether you’re thinking about a second-story addition, over-garage expansion, or opening up the layout, this guide is packed with real strategies, deep design insight, and expert tips.

Let’s dive into addition ideas for split-level homes—and how to make the most of yours.

Why Split-Level Homes Are Tricky (But Full of Potential)

Before we talk about additions, let’s look at what makes split-level homes so unique—and challenging.

Split-levels usually have three to four staggered floors, each connected by short flights of stairs. You might enter on a main level with a kitchen and living room, then go half a flight up to the bedrooms, and half a flight down to the den or basement.

This layout was great in the ’60s and ’70s when zoning encouraged compact living on smaller lots. But today’s homeowners want open-concept spaces, natural light, and better flow. And here’s the truth: that’s totally possible with the right remodeling strategy.

For inspiration, check out this renovation of a 1960s split-level by This Old House, which maintained the architectural roots while creating a functional, modern family home.

Homeowner planning a split-level addition with house model and floor plans — Careful planning is key to a successful split-level home addition. Work with trusted general contractors in Washington DC to bring your vision to life.

Top Addition Ideas for Split-Level Homes

Here are six proven ways to add space, value, and function to your split-level house—whether you’re in Arlington, Bethesda, Alexandria, or anywhere in the DMV.

1. Over-the-Garage Addition

One of the most common (and cost-effective) strategies is to build over the existing garage. This is a prime spot for:

A primary suite with en suite bath
A guest bedroom and bathroom
A home office or hobby room

This type of addition works well with split-level layouts since garages are often at a lower level and can support a second story structurally. You get extra square footage without changing the home’s footprint.

If you’re considering this, our blog on Tips for a Master Suite Addition Over Garage is a must-read.

2. Rear Additions or Bump-Outs

If your lot allows, a rear addition or side bump-out can create space without disrupting your home’s front elevation. Consider:

Expanding the kitchen to create a true open-concept space
Adding a sunroom or casual family room
Creating a large mudroom/laundry combo for busy families

Many Arlington-area homeowners choose to bump out at the back while redesigning the kitchen and dining areas. The result? Better flow and more space without losing the architectural character of the split-level.

3. Second-Story Addition (Full or Partial)

Adding a full second story can transform a modest split-level into a spacious, two-story home. This is especially valuable for:

Growing families needing more bedrooms
Creating a full upper-level master suite
Expanding usable square footage without sacrificing your yard

Keep in mind: a second-story addition requires careful structural planning. You’ll need to evaluate the foundation and framing, meet height restrictions, and potentially reinforce or rebuild sections. Bob Vila’s article on split-level homes offers insight into the structural nuances of this housing style.

If you’re curious about vertical expansion, check out our Expert Guide to Second Story Addition for DMV homeowners. For general advice, refer to how to plan a home addition.

4. Reconfiguring Interior Levels

Sometimes, the best “addition” is a smarter use of your existing levels.

Split-level homes are infamous for awkward transitions and small, choppy rooms. By removing walls, shifting staircases, and re-leveling parts of the home, you can create a seamless layout that feels brand new.

Popular reconfigurations include:

Creating an open-concept kitchen-living area
Combining two small bedrooms into a spacious master
Raising ceiling heights or opening up attic spaces

While this type of work doesn’t always add square footage, it dramatically increases livability and resale value.

Updated split-level home exterior after second story addition in Arlington VA — A beautifully remodeled split-level home with a second-story addition, completed by expert general contractors in Washington DC.

5. Front Entry or Porch Addition

Many split-level homes in the DMV were built with small, recessed entryways—making the house feel dated and closed off. A front porch or entry addition can dramatically improve curb appeal while adding functionality.

Ideas include:

A covered front porch with seating
An expanded foyer with coat storage and natural light
A more defined architectural entryway to enhance the home’s identity

This type of addition pairs beautifully with exterior updates like siding, stonework, or new windows.

6. Basement or Lower-Level Finish and Expansion

Let’s not forget: most split-levels have semi-subterranean lower levels. These can be transformed into:

A guest suite or rental unit
A media room or home gym
A walk-out family room with direct backyard access

In some cases, you can even dig out or extend the foundation to add more headroom or living space.

💡 Bonus: Lower-level renovations typically cost less per square foot than above-grade additions.

Design Considerations: Merging Old and New

One challenge with any split-level remodel is maintaining architectural cohesion. You don’t want your addition to look tacked on.

Here’s how we approach it:

Match rooflines and window proportions
Use complementary exterior materials (brick, wood, stone)
Blend mid-century modern aesthetics with today’s trends
Respect the home’s original layout while improving function

Need inspiration? Browse these real split-level addition photos on Houzz to see how others are transforming similar homes.

What About Zoning and Permits in Arlington, VA?

If you’re in Arlington or nearby areas like Falls Church or McLean, you’ll need to comply with local zoning and building codes. That includes:

Setback requirements: how far you can build from the property line
Lot coverage maximums: limits on total building area
Height restrictions: especially relevant for second-story additions
Stormwater management and tree preservation rules

A qualified general contractor should handle all permitting, including architectural plans, structural engineering, and submission to the county.

Energy Efficiency and Sustainability

Adding square footage is a great time to upgrade your home’s performance. We often recommend:

Energy-efficient windows and insulation
LED lighting and smart thermostats
High-efficiency HVAC with zoning
Low-VOC paints and sustainable flooring

These upgrades may qualify your home for Arlington’s Green Home Choice Program, which rewards eco-conscious remodels with long-term energy savings.

Choosing the Right General Contractor in DC or Northern VA

Not all contractors understand the quirks of split-level homes. Here’s what to look for:

Proven experience with complex home additions
Familiarity with local building codes and permit processes
A collaborative design-build process that helps you visualize the finished result
Professionalism, clear communication, and consistent timelines

We’ve built our reputation by helping DMV homeowners modernize older homes with quality craftsmanship, thoughtful design, and a seamless remodeling experience.

Final Thoughts: You Don’t Have to Move—Just Improve

If you love your neighborhood but feel limited by your home’s layout, a well-planned addition can give you the space and function you need—without uprooting your life.

Split-level homes may require a bit more creativity, but they offer incredible potential when in the hands of the right team.

Now that you’ve seen our addition ideas for split level homes, are you thinking about transforming your space? Let’s talk. Dzala General Contractor is a trusted general contractor in Washington DC. We specialize in second story additions that combine quality craftsmanship, modern design, and long-lasting durability.

👉 Contact us today to schedule a free consultation. We’ll walk you through your options, help you clarify your vision, and deliver a beautifully upgraded home—without the stress.