When planning your remodel in Arlington, it's crucial to navigate the local code regulations that will impact your project. Being informed about these regulations can help streamline your remodel process and avoid potential setbacks. We've developed this page to give you a better understanding of Arlington's code regulations. ​

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Setbacks dictate how far your home can be from its property lines, ensuring privacy and safety. In Arlington, setbacks vary depending on the zoning district your home is located in. Typically, Arlington County requires front and back setbacks of 25', and most side setbacks of 10' and 8'. 

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Also, lots with an irregular shape may have unique regulations that differ from case to case. To understand your zoning restrictions, you can access all the necessary information on Arlington County's Residential Setbacks guidelines.

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​How can I maximize space in my remodel with these restrictions?

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Setbacks impose restrictions on how close your home can be built to property lines, potentially limiting the size and design of your remodel. Fortunately, there are plenty of strategies to maximize your square footage. Consider adding an extension within the setback limits, raising the house to use the basement, adding a new top floor, or reconfiguring your existing space. 

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2. How much of my property will Arlington County allow me to build? ​

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Lot coverage plays a crucial role in determining how much of your property can be developed, influencing not only the placement of buildings and driveways but also the design and availability of landscaping and outdoor spaces.

 

How Do I Calculate Lot Coverage?

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Essentially, lot coverage is the ratio of the occupied area—such as structures and paved surfaces—compared to the total area of the lot. Understanding these limits is key to balancing development with the preservation of open, usable outdoor areas. 

Arlington County's Lot Coverage guidelines allows residents to easily calculate their lot coverage and gain a comprehensive understanding of the regulations and requirements in the county.

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What Structures Count Toward Lot Coverage?

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The following elements contribute to the lot coverage calculation:

• Main Buildings

• Detached Garages and Accessory Buildings

• Paved Driveways and Parking Pads

• Pergolas

• In-Ground Swimming Pools

• Bay Windows​

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Who is Subject to Lot Coverage Regulations?

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Below is an example of an Arlington property that could not expand due to lot coverage limitations. The best solution for our client was to construct an addition above the existing floor.​

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3. What does Arlington County consider as an ADU (Accessory Dwelling Unit)?

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An accessory dwelling unit (ADU) is a self-contained living space featuring its own kitchen and bathroom, situated on the same property as a primary residence. The ADU must be owned alongside the main home and can house up to three residents. It can be connected to the primary residence or stand as a separate building.

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If you're thinking about adding an Accessory Dwelling Unit (ADU), you'll need to apply for a permit that adheres to the specific standards outlined in Arlington County's Zoning Ordinances.

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4. Do I have a nonconforming structure and do I need to get approval for my upcoming remodel? 

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A nonconforming structure is a building or lot that was legally constructed or established but no longer aligns with current zoning laws. Various aspects can be considered nonconforming, including lot sizes, structures, heights, and footprints.

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Nonconforming structures may limit your renovation options, as significant changes or expansions often require special approval and must comply with current zoning regulations.

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By-Right Renovations

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By-right renovations are modifications that can be approved by the Zoning Administrator, although they may require permits. These allowances support the preservation of older homes in the County and enable homeowners to make essential updates to better suit their needs.

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For more information, see Arlington County's Code Ordinances for Nonconforming Structures. 

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5. What happens if I go beyond three bathrooms in my Arlington home remodel?

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In Arlington, VA, a water supply upgrade is necessary whenever a home exceeds three bathrooms. This involves replacing existing pipes to handle the increased water usage effectively.

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How Much Will the Water Supply Upgrade Cost?

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Water supply costs can vary significantly from home to home, depending on several factors, including the size of the property and the existing plumbing system. While we can't provide an exact figure, water supply upgrade costs can easily reach $20,000. This is one of the first considerations we discuss with clients who express a desire to add a bathroom to their home.​​​​​​​

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So, what's next? ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​

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Arlington, VA, is the heart of TriVistaUSA Design + Build. Founded 20 years ago, our company is rooted in this vibrant community, having crafted hundreds of homes throughout the area. We have a strong connection to Arlington and its residents. 

 

We understand that navigating its guidelines and regulations can often feel overwhelming. That’s why we’re here to simplify the process and ensure a smooth experience from start to finish. Our team is dedicated to guiding you every step of the way, so you can focus on turning your vision into reality.

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If you are interested in remodeling with us, send us an inquiry!

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*For comprehensive guidelines, refer to Arlington County's Buildings Guidelines Page.