Arlington County’s approach to “Missing Middle” housing has been one of the most closely watched land-use debates in Northern Virginia. In recent years, the County adopted what it now calls the Expanded Housing Option (EHO)—a zoning reform that allows certain small multi-unit residential buildings in areas historically limited to detached single-family homes.
For Arlington property owners, buyers, and sellers, understanding what EHO does—and does not—allow is essential. While headlines often suggest sweeping changes, the reality is more nuanced. This guide explains the current zoning framework, where EHO applies, and what it means for real estate decisions in Arlington today.
What “Missing Middle” Means in Arlington Today
In Arlington, “Missing Middle” housing refers to low-rise, small-scale residential buildings that fall between single-family detached homes and large apartment buildings. Under the current zoning ordinance, these may include:
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Duplexes
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Townhouses
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Small multiplex buildings (up to 6 units on qualifying lots)
Importantly, single-family zoning has not been eliminated. Instead, Arlington has added a by-right option that allows expanded housing types under specific conditions, subject to lot size, dimensional limits, and design standards.
A Brief History of Arlington’s Zoning Shift
For decades, Arlington concentrated density near Metro corridors while preserving large areas of detached single-family zoning. Roughly three-quarters of residential land was limited to one dwelling per lot.
In 2023–2024, the County adopted EHO to:
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Expand housing options incrementally
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Address long-term supply constraints
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Allow more flexibility without wholesale neighborhood redevelopment
Legal challenges followed, but Virginia courts ultimately upheld Arlington’s authority to implement EHO, and the ordinance is now in effect.
What the Expanded Housing Option (EHO) Actually Allows
1. Additional Units — With Limits
EHO permits more than one dwelling unit on a lot by right, but the number of units depends on lot size:
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Smaller lots: typically limited to 2–3 units
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Larger lots: may qualify for up to 6 units
There is no automatic entitlement to maximum density; eligibility is governed by specific zoning criteria.
2. Dimensional & Design Controls Still Apply
To maintain neighborhood scale, EHO includes rules governing:
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Maximum building height
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Lot coverage
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Setbacks
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Building form and massing
These standards are intended to ensure that new construction remains compatible with surrounding homes.
3. Parking Requirements Are Reduced—but Not Eliminated
EHO reduced parking minimums compared to traditional multifamily zoning, particularly near transit. However, parking is not optional, and site-specific requirements still apply.
4. No Guarantee of “Affordable Housing”
A critical clarification:
EHO does not mandate below-market or income-restricted pricing.
While smaller units can be less expensive than large single-family homes, pricing is still driven by construction costs, land values, and market demand.
What EHO Means for Arlington Property Owners
Potential Upside
For some owners, EHO may:
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Increase redevelopment flexibility
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Improve long-term land value on larger lots
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Enable multi-generational living or future resale optionality
Properties near transit, on wider or deeper lots, or in areas already seeing reinvestment may see the most impact.
Important Reality Check
EHO does not mean:
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Every single-family lot can or should be redeveloped
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Existing homes lose value by default
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Neighborhoods will suddenly convert to dense housing
In practice, redevelopment remains capital-intensive and selective.
Implications for Buyers and Sellers
Buyers
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Lot characteristics matter more than ever (width, depth, zoning overlay)
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Not every EHO-eligible property has realistic redevelopment potential
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Future optionality can be valuable—but should not be overpaid for
Sellers
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Some homes may appeal to a broader buyer pool
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Marketing strategy should reflect whether EHO is a theoretical or practical advantage
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Pricing should be grounded in comparable sales, not assumptions about future density
Zoning Compliance: What Property Owners Must Know
Any project utilizing EHO must still go through:
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Zoning review
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Building permits
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Plan approval with Arlington’s Department of Community Planning, Housing & Development
Projects must comply with current building codes, stormwater rules, and all applicable zoning standards. Early consultation with zoning professionals and architects is strongly recommended.
Common Questions About Missing Middle Housing in Arlington
Has single-family zoning been eliminated in Arlington?
No. Single-family homes remain permitted throughout Arlington. EHO adds additional options—it does not remove existing rights.
Can I automatically build a six-unit building on my lot?
No. Maximum unit count depends on lot size and zoning compliance. Many lots will not qualify.
Does EHO reduce property values?
There is no evidence of across-the-board value decline. As with most zoning changes, impacts are location-specific and gradual.
Does Arlington have rent control?
No. Virginia law prohibits local rent control, including in Arlington County.
The Bottom Line on Missing Middle Housing in Arlington
Arlington’s Expanded Housing Option represents an incremental zoning shift, not a wholesale transformation. It creates flexibility in specific scenarios while preserving neighborhood scale and market-driven outcomes.
For homeowners, buyers, and sellers, the key is understanding what is realistically allowed, where EHO matters, and how it fits into broader real estate strategy—not relying on headlines or assumptions.
Work With a Local Arlington Real Estate Expert
Zoning changes affect real estate value only when they intersect with location, lot characteristics, and market demand. Brad Winkelmann has helped Arlington buyers and sellers navigate these nuances since 2002, with street-level insight into how policy translates into real-world pricing.
📞 703-850-5223
📧 brad@arlingtonabodes.com
Guidance backed by experience. Results built on trust.
Last updated: December 2025
