"I don't have any skin in the game," the Arlington developer known in county permitting circles simply as Wilson told a reporter this August, explaining why he was stepping back from a Virginia Supreme Court case that could decide the fate of his own projects. Wilson had already sunk money into two Missing Middle townhouse developments, on 25th Street South and N. Quincy Street, when a circuit court judge voided the zoning that made them legal in September 2024. He has said he came close to losing everything he had built over a decade. He is not fighting anymore.
If you are looking at a single-family house in Arlington and pricing in the idea that the lot underneath it might secretly be worth more because it could theoretically hold a duplex, triplex, or six-unit building, Wilson's story is the fact you need before you write an offer. Arlington's Expanded Housing Option, the ordinance behind what most people call "Missing Middle" zoning, has been law, then not law, then law again, and it is currently sitting in front of the Virginia Supreme Court for the second time in two years. The right to build multifamily housing on a formerly single-family lot in Arlington is not a fixed fact you can look up on a zoning map. It is a live legal question, and the answer has changed at least three times since 2023.
A Right That Has Already Been Taken Back Once
The county board approved the EHO ordinance unanimously in March 2023, and it took effect that July, allowing up to six housing units on lots across the county that had previously been restricted to single-family homes. By the fall of 2024, the county had approved 45 EHO permits, with 12 already holding demolition permits and seven holding building permits, according to Arlington Magazine's reporting at the time.
Then, on September 27, 2024, a circuit court judge ruled against the county on four of six counts, finding it had not properly studied the ordinance's impact and had improperly delegated authority to staff. The ruling did not just block future permits. It voided the ones already issued. In a letter obtained by Arlington Magazine, the county's planning director told developers that any previously approved EHO permit was "now void, or simply put, no longer exists." The county also confirmed it could not refund the permit fees developers had already paid.
That is the detail worth sitting with if you are evaluating a lot for its multifamily upside. This did not happen to a distant hypothetical developer. It happened to real people mid-construction, and the county's answer was that the fees were gone along with the permits.
Where the Case Stands as of September 2026
The Virginia Court of Appeals reversed that ruling in June 2025, but not on the merits of whether EHO is legal. It found the plaintiffs had failed to include "indispensable parties," namely the developers holding EHO permits, in their original lawsuit. That procedural win put EHO back on the books, and the county has continued issuing permits since. ARLnow reported in April 2026 that the county had approved nine additional EHO projects totaling 40 units since the appeals court ruling, with 59 projects listed on the county's permitting dashboard, though some of those had already pivoted back to single-family plans because of the uncertainty.
The plaintiffs appealed that procedural loss to the Virginia Supreme Court, which agreed on May 19, 2026 to take up the case. As the county's own spokesperson confirmed in comments to ARLnow at the time, that review only concerns the procedural question of whether the developers should have been part of the original suit. It does not touch whether EHO itself is legally valid. Plaintiffs filed a 51-page brief on July 29, 2026, and oral arguments on that narrower question are expected this fall. If the Supreme Court sides with the plaintiffs, the case goes back to circuit court for a full trial on the ordinance's merits, meaning the entire fight restarts with all parties present. Jason Schwartz of YIMBYs of Northern Virginia summed up the mood to public radio station WMRA in late May, calling the pace "very frustrating" while the uncertainty drags on.
For a buyer, the practical read is this: EHO is valid law today, September 2026, and the county will process a permit application under it. But "valid today" has already proven to be a temporary status once, and nothing in the current court posture guarantees it won't become temporary again.
What "Zoned for Six Units" Actually Pays Out
Even setting the legal risk aside, the financial upside of a redevelopment lot is thinner than the phrase "up to six units" implies. Arlington's EHO ordinance caps building size to what a single-family home would already be allowed on that lot, plus a five percent bonus, and layers on its own limits: 4,800 square feet maximum for a duplex, 7,200 square feet for a fourplex, according to details reported in Arlington Magazine's coverage of the policy's rollout. The county also caps new EHO permits at 58 per year across the entire jurisdiction for the ordinance's first five years, and requires shade trees and parking that scale with a project's size and distance from Metro.
David Tracy, president of Alexandria-based homebuilder Classic Cottages, put the economics plainly in that same Arlington Magazine reporting: it doesn't make financial sense to put a low-cost home on expensive land, and land in Arlington is expensive. Lot prices can run $800,000 to $1 million for under a quarter acre before a shovel goes in the ground. That cost gets divided across however many units a lot ends up holding, but it doesn't disappear.
The completed projects on the market back this up. A five-bedroom, three-and-a-half bath EHO duplex in the North Highlands neighborhood sold in March 2026 for $1,610,000, and its neighboring unit, a four-bedroom, three-and-a-half bath home, sold in December 2025 for $1,615,000, per ARLnow's reporting on the case. Wilson's own two properties on 25th Street South sold for around $1.2 million each. These are not discount starter homes. They are priced like the premium product they are, because the land under them was never cheap to begin with. A buyer treating "could be a six-plex" as a coupon for below-market pricing is working from a number that the built product doesn't support.
What to Actually Check Before Paying a Premium for Redevelopment Potential
If a listing's value case rests partly on its multifamily potential, a few concrete steps matter more than the zoning map:
Check the lot's actual status on the county's EHO permitting dashboard rather than assuming zoning alone settles the question. Some lots that looked EHO-eligible have already pivoted back to single-family plans as sellers and builders priced in the litigation risk.
Ask whether the property carries a private deed covenant restricting construction to single-family homes. These predate EHO, sit outside the zoning code entirely, and courts have consistently upheld them regardless of what county ordinance says. A lot can be EHO-eligible under the zoning code and still be covenant-restricted at the deed level, and the county does not proactively flag this for buyers.
Understand that "vested rights," the legal protection that let Wilson's specific projects proceed even after the ordinance was challenged, attaches to named projects with permits already in hand at a particular point in time. It does not extend automatically to a lot you are considering buying today. Vested rights are earned through the permitting timeline, not inherited with the deed.
Build your closing and construction timeline assuming the legal question stays open longer than anyone currently predicts. Neighbors for Neighborhoods, the group funding the plaintiffs' case, told ARLnow in May 2026 it expected a merits trial within three to six months, which points toward this fall or winter. Court timelines slip often enough that this is a planning assumption, not a date to build a contract around.
A Few Questions Worth Asking Before You Write an Offer
Does buying a single-family home in Arlington today mean I lose the option to redevelop it later? Not automatically. EHO remains valid law as of September 2026, and the county continues to process applications under it. The open question is whether a future court ruling could void that permit after you've already invested in it, the way it did for permit holders in September 2024.
If my permit gets voided after approval, does the county refund the fees? Based on the county's own communication to developers during the 2024 ruling, no. Permit fees were not refunded when EHO was struck down and existing approvals became void.
Does a covenant override current EHO zoning? Courts have consistently sided with private deed covenants over the zoning code's permissions. A property can be EHO-eligible by zoning and still be blocked from multifamily construction by an older covenant recorded on the deed.
A lot's redevelopment potential in Arlington right now is real, but it's optionality with a legal discount attached, not a locked-in value add. Knowing where a specific property sits in that permitting and covenant picture, before you write an offer, is the difference between buying upside and buying a lawsuit's outcome.
If you're weighing a single-family purchase in Arlington against its multifamily potential, or trying to figure out what a specific lot's EHO status actually is, Cox & Cox Group can walk the permitting dashboard and deed history with you before you commit to an offer. Contact Us — Let's Solve Your Home Needs.
