Home Additions in Arlington, VA
Commonwealth Home Design has been designing home additions for Arlington families from our Vienna office for 40 years. Arlington’s compact lots, historic character, and independent county permitting mean every addition needs to work harder: careful setback calculations, thoughtful design that respects the neighborhood, and a firm that knows Arlington County’s review process, not Fairfax County’s.
Arlington has the oldest and most varied housing stock in our service area, from 1920s Craftsman bungalows in Lyon Park and Cherrydale to 1930s brick colonials in Aurora Highlands and postwar ramblers in Arlington Forest. Additions here have to work within tight setbacks and, in historic districts like Maywood, may need HALRB review. Here is what Arlington homeowners ask us for most:
- Kitchen & Family Room Expansions. Opening up small pre-war kitchens and connecting them to family and dining space, often within an existing footprint where every square foot has to earn its place.
- Second-Story and Bump-Out Additions. Adding upward is often the answer when Arlington’s compact lots can’t support outward expansion. Second stories over ramblers double the bedroom count without changing setbacks.
- Primary Suite Additions. A dedicated primary suite with the closet, bath, and quiet Arlington’s older single-bath bungalows and colonials were never designed to include.
- In-Law Suite Additions. Independent living space with a private entrance, a practical way to keep families together on Arlington’s high-value lots where buying a second home isn’t the answer.
- Sunrooms & Screened Porches. Three-season and four-season rooms that make Arlington’s compact backyards and porches usable for more of the year.
From Our Arlington Portfolio
Our Whole-House Remodel and Garage Addition project transformed a dated 1960s home with an open floor plan, expanded living spaces, an updated exterior, and a new garage addition. It’s a good example of the comprehensive addition work Arlington projects often call for when smaller lots require careful planning. Get the full project details.
Why Arlington Homeowners Choose Commonwealth
- Design and construction under one roof. When architects, project managers, and craftsmen work together from concept through completion, coordination handoffs and finger-pointing disappear. That’s how we run every Arlington project.
- Arlington County process expertise. Arlington is an independent county with its own government and its own permitting office, separate from Fairfax County. We know the code, the review timelines, and the historic district process.
- Compact-lot design experience. Arlington’s setbacks, lot coverage limits, and height restrictions demand smarter design. We plan around those constraints so every square foot works.
- Daily onsite presence. A dedicated project manager owns the schedule, and a member of our team is onsite every day of active construction.
Building Additions in Arlington
Arlington’s independent permitting adds complexity, and we handle all of it.
Arlington is an independent county with its own government, its own zoning code, and its own permitting office, separate from Fairfax County. Building permits, inspections, and zoning review all run through Arlington County’s Department of Community Planning, Housing, and Development. Arlington also has local historic districts, including the Maywood Historic District, where exterior changes may require review by the Historical Affairs and Landmark Review Board (HALRB). Some neighborhoods have stormwater management considerations, especially where older infrastructure has struggled with severe storm events. Working with a firm that knows Arlington’s system means all of it gets accounted for at design, not discovered mid-permit.
Frequently Asked Questions: Arlington, VA Home Additions
How long does an Arlington home addition take?
Most Arlington additions run 3 to 6 months of construction once permits are issued, with another 2 to 3 months of design and permitting on the front end. HALRB historic district review can add time to the front end when it applies. Every project gets a written schedule before we start.
What permits do I need for an Arlington addition?
All Arlington additions require permits through Arlington County, not Fairfax County. If your home sits in a historic district like Maywood, HALRB review may also apply. Larger projects that affect impervious surface or drainage may need a stormwater management plan. We handle the full permit and review process as part of every project.
Can I stay in my home during an addition?
Yes, in most cases. We plan construction phasing to keep your home livable throughout, working from the exterior and finishing rooms in stages. Second-story additions may require short temporary relocations, which we flag upfront so you can plan around it.
How do you match the addition to my existing home?
Our architects study your home’s roofline, materials, window rhythm, and proportions before drawing anything. In Arlington, that might mean preserving a Craftsman bungalow’s rafter tails and columns, matching a Colonial Revival’s brick and trim details, or continuing a mid-century rambler’s roofline. The addition should read as part of the house, not an obvious add-on.
Continue Exploring
Let’s Talk About Your Arlington Addition
Every Arlington project starts with a conversation. We’ll walk your lot, talk through what setbacks, historic district rules, or lot coverage will let you build, and give you a realistic sense of timeline and budget before drawings begin.
