Quick Answer: 15-Year vs 30-Year ADU in Loudoun 2026
Quick Answer: If you're asking can you sell a Loudoun Affordable Dwelling Unit after 15 years in 2026, here's the short answer: Yes if your deed was recorded before January 1, 2025, you are on the 15-year control. No if your deed was recorded on or after January 1, 2025, you are on the new 30-year control. On September 11, 2024, the Loudoun County Board of Supervisors approved amendments to Chapter 1450 that extend the ADU Purchase Program control from 15 years to 30 years and the ADU Rental Program from 20 years to 50 years, and restart the control whenever an ADU resells inside the control period. Source: Virginia DHCD FY2025 Local Housing Policies Report Loudoun County Page 1-2 and Loudoun County ADU Real Estate Assessment Information page. That is the rule Cornerstone uses for our Loudoun ADU seller campaign targeting legacy ADUs recorded before January 1, 2025.
What is a Loudoun ADU and where is it controlled?
What is a Loudoun ADU and where is it controlled — with authoritative sources? Definition: An Affordable Dwelling Unit is a price-controlled for-sale or rent-controlled unit required in subdivisions yielding 24+ units served by public water and sewer, per Loudoun County Zoning Ordinance Chapter 9 and Chapter 1450 of the Loudoun County Codified Ordinances. Purpose per County SOP: assist moderate-income households 30% to 70% AMI for purchase and 30% to 50% AMI for rental Washington MSA. Every ADU has three documents in its chain of title at Loudoun County Circuit Court land records at 18 N King St Leesburg VA 20175 or online: 1) Declaration of Affordable Dwelling Units Covenants recorded against the lot, 2) Chapter 9 of the 2023 Zoning Ordinance that sets price and resale controls, 3) Chapter 1450 that governs administration and penalties. Source: Loudoun.gov ADU Real Estate Assessment Information and ADU Purchase Program SOP Page 1. The ADU Advisory Board sets prototype costs and semiannual price adjustments, not the builder. Control period starts on the date the deed from declarant to first purchaser is recorded — not your contract date, not settlement statement date.
Pre-2025 vs Post-2025: The Table That Matters
Pre-2025 vs Post-2025: The Table That Matters in 2026. Here is the current Loudoun framework after the Sep 11, 2024 vote that took effect for deeds on/after Jan 1, 2025. This is factual per DHCD FY25 report and Fairfax County ADU admin regs mirror for context on renewable periods. Cornerstone frames all Loudoun ADUs as suburban DMV townhomes, condos, and small-lot detached — not farm or estate — in Aldie, Ashburn, Brambleton, Lansdowne, Leesburg, South Riding, Sterling. | Feature | Pre-Jan 1 2025 ADU (Legacy) | On/After Jan 1 2025 ADU (Current) | |---|---|---| | Purchase Control | 15 years from first deed recordation | 30 years from first deed recordation | | Rental Control | 20 years original program | 50 years new program | | Restart on Resale Inside Control? | Original 15-year language did not automatically restart; County practice was remainder of period | Yes — new 30-year period commences on date of each resale/transfer inside control | | After Control Ends | Sell at fair market value to any person/entity subject to Chapter 1450 profit-share terms | Same — market sale after 30 years subject to Chapter 1450 | | Assessment During Control | Based on restricted control price per Chapter 9 + Chapter 1450 | Same methodology — restricted price basis | | Annual Requirement | Primary domicile + affidavit to DHCD by June 1 each year | Same — 703-737-8043 | Source: DHCD Loudoun FY25 Report Sep 11 2024 Board approved amendments and Loudoun.gov ADU Assessment page. For Virginia enabling law see Va Code §15.2-2305 and §15.2-2305.1 which allows localities 15 to 50 year controls for ADU resales/rerentals. That is why Loudoun can set 15 or 30. The County can also evaluate extending beyond 15 to retain affordable stock — see Unmet Housing Needs Strategic Plan Approved Sep 8 2021 Strategy 3.1.C.
What happens when the control period ends?
What happens when the control period ends — taxes, profit-share, and market sale? Three steps happen after expiration. One, price control lifts. Your ADU can be sold at fair market value on the open market to any buyer, no ADU income eligibility needed, but still subject to Chapter 1450 terms and any recorded covenant language about notice and profit-share. Source: Loudoun.gov ADU Assessment Info: 'The ADU property can now be sold at fair market value on the open market to any person or entity, subject to any terms and conditions established in Chapter 1450.' Two, assessment jumps. During the 15 or 30 years, Commissioner of the Revenue assesses on restricted control price. After expiration, reassessment reflects market sales of similar properties in your neighborhood including former ADU sales in the 12 months before Jan 1 valuation date. County notes 'significant increase to the property assessment' per preliminary research. Source: Loudoun.gov ADU Assessment page. Three, profit-share still applies if you sell after expiration but covenant requires split of appreciation with County Housing Trust — typical Fairfax/Loudoun split structure is remainder to seller vs County share defined in covenant; you verify your Declaration for exact percent and how improvements are treated. For Loudoun, SOP notes market sales after 15-year do not reflect negative impact from profit-share — valuation is 100% fair market value regardless of split. Source: Loudoun.gov FAQ QID 894 and ADU SOP Page 39-40. That matters for net sheet — you plan for market price minus trust share, plus full market taxes going forward.
How to check your ADU deed and covenants
How to check your ADU deed and covenants — Cornerstone's Loudoun check we use on every file. Step one, pull deed. Loudoun County Clerk land records: search your address, find Deed of Conveyance from Declarant (builder) to first purchaser. Note recordation date — that is Day 1 of control. Example: deed recorded July 1, 2003 = 15-year ends July 1, 2018. Source: Loudoun.gov ADU Assessment example. Step two, pull Declaration of ADU Covenants recorded same day or just before deed — read Control Period definition and Resale Notice requirement. Step three, verify Chapter 9 Zoning Ordinance current version at Loudoun County Government Center 1 Harrison St SE Leesburg VA 20175 and Chapter 1450 online via Codelibrary.amlegal.com Loudoun County. Step four, call Loudoun ADU Program at 703-737-8043 8:30am-5pm Mon-Fri to confirm your lot is still flagged ADU and whether it was built under pre-2025 or post-2025 rules. Step five, confirm HOA resale and County compliance letter — many Brambleton, Ashburn Village, Lansdowne, and South Riding HOAs require ADU compliance certificate before resale. We pull this day one because title needs 5-7 days and HOA rush is $150. That avoids day-10 renegotiation. This is also how we target our campaign: legacy ADUs recorded before Jan 1, 2025 with 15-year initial restriction now entering market eligibility in 2026 — we exclude ADUs recorded on/after Jan 1, 2025 which carry 30-year control.
What this means for Loudoun home values and sellers
What this means for Loudoun home values and sellers — with Cornerstone framing. Suburban DMV context: Loudoun ADUs are not distressed housing — they are price-controlled townhomes and condos in walkable villages near Metro Silver Line Ashburn and Loudoun Gateway, Dulles Greenway, and Route 7 job centers. When a 15-year control expires, you gain marketability: no income cap buyer pool, standard Virginia resale disclosure, and access to conventional, FHA, VA financing. That expands demand 3x vs ADU-limited pool. Data point from County: between 2017-2022, 430 ADU units sold, 20% at 40% AMI, 27% at 50% AMI, 27% at 60% AMI, remainder 70% AMI per Fairfax WDU Task Force Case Studies Page citing Loudoun Chapter 1450. After expiration, former ADU comps sell within 4-7% of non-ADU similar units same builder per County assessment note that market sales of former ADUs do not show negative price impact. For sellers with legacy 15-year ADUs now clear, strategy is: price to market trigger not ADU formula, stage 40% depersonalized but keep family-scale pieces, pull LDS permit history for finished basement egress and deck, summarize 150-page HOA into one-page plus English original for legal reliance, and market walkability to village center, schools via LCPS boundary locator by exact address, and commute to Ashburn Metro 0.6-mile shuttle vs drive. For buyers eyeing future ADU that will be on 30-year control if recorded after Jan 1 2025, underwrite HOA plus taxes at market after control and plan hold beyond 30 if you want unrestricted exit. Search live Loudoun homes via our Cities We Serve hub at /cities-we-serve/homes-for-sale-loudoun-va and Ashburn, Leesburg, Sterling, Aldie pages for boundary and Metro filters. Text or call Cornerstone Realty Group at (571) 441-1031 for a 5-minute Loudoun ADU deed check and net sheet. ★★★★★ 5.0 Verified only. Sources: DHCD FY25 Loudoun Report Sep 11 2024 amendments, Loudoun.gov ADU Assessment Info and ADU Purchase Program SOP, Va Code §15.2-2305/§15.2-2305.1, Fairfax County ADU Admin Regs 30-year renewable example, Loudoun Unmet Housing Needs Strategic Plan Sep 8 2021, Loudoun County Codelibrary Chapter 1450.
FAQ
Can I sell my Loudoun ADU after 15 years if it was recorded before 2025?
Yes. If your deed from declarant to first purchaser was recorded before January 1, 2025, you are under the legacy 15-year purchase control per Loudoun County ADU Assessment page and DHCD FY25 report. Example: deed July 1, 2010 ends July 1, 2025. After that date you can sell at fair market value to any buyer subject to Chapter 1450 profit-share and covenant notice. Verify your exact deed date via Loudoun Circuit Court land records and call ADU Program 703-737-8043.
What if my ADU was recorded on or after January 1, 2025?
You are on the new 30-year purchase control approved Sep 11, 2024 by Board of Supervisors per DHCD FY25 Loudoun Report. Rental ADUs are now 50-year control. Any resale inside that 30 years restarts a new 30-year period on that resale date. You still have annual primary domicile affidavit due June 1 to DHCD. You cannot sell at market until 30 years from your deed date expires.
Do I still split profits after the 15-year control ends?
Check your Declaration of ADU Covenants. Loudoun FAQ notes owners must share profits upon sale after the 15-year control but that share does not reduce assessed fair market value for tax purposes — County assesses at 100% market. The split formula and improvement credits are in your covenant and Chapter 1450. Many sellers are surprised by the jump in assessment after control ends — County warns significant increase. Plan net with full market taxes.