Hearthstone Design Build is a Loudoun County design-build firm crafting heavy-timber and post-frame barns — equestrian facilities, event and wedding barns, and estate carriage barns — across the county's western hunt and wine country. Based in Leesburg, we handle design, engineering, AR-1/AR-2 zoning, and the special-exception path for commercial event venues under one contract.
Hearthstone Design Build is the barn design-build firm headquartered in Loudoun County, based in Leesburg at 19 N King St. We are Class A licensed in Virginia (DPOR #2705195817) and specialize in equestrian facilities, event and wedding barns, and estate carriage barns on AR-1 and AR-2 land. Where most barn companies subcontract engineering and hand off the zoning fight, we run design, engineering, special-exception coordination, and construction under a single contract with founder Dan Caporale.
Barn uses in Loudoun County
Estate Equestrian Facilities
Center-aisle horse barns, run-in sheds, tack rooms, wash bays, and covered rings integrated with paddock layout, drainage, and manure management.
Event & Wedding Barns
Heavy-timber event structures for DC wine country — finished interiors, restrooms, catering kitchens, HVAC, and parking planned around Loudoun's special-exception standards.
Carriage & Estate Barns
Multi-bay carriage barns with upstairs quarters, workshops, or offices — designed to complement a primary residence and pass ARB review in historic villages.
Working Agricultural Barns
Hay, equipment, and livestock structures for genuine farm operations — engineered to Loudoun's building code and Virginia farm-use exemption boundaries.
Budget planning
Loudoun County pricing is driven by high land values and the special-exception process for event venues. Equestrian and event barns anchor the top end; ag structures for bona-fide farms remain the value tier.
| Project | Range | Scope |
|---|---|---|
| 36×48 Horse Barn (1,728 SF) | $65,000–$100,000 | 4 stalls, tack, wash bay, loft |
| 40×60 Equestrian / Riding Structure | $90,000–$200,000 | Center-aisle or covered arena framing |
| 30×40 Agricultural Barn (1,200 SF) | $18,000–$30,000 | Unfinished, metal siding, sliding door |
| 40×60 Equipment Storage (2,400 SF) | $45,000–$70,000 | Overhead doors, concrete floor, basic electric |
| 50×80 Event / Winery Barn (4,000 SF) | $250,000–$400,000+ | Finished, restrooms, kitchen, HVAC |
Zoning and site planning
Loudoun's rural zoning is among the most restrictive in Northern Virginia. Getting the intended use right on paper is what determines whether a barn is a 4-week permit or a 12-month special-exception marathon.
- AR-1 allows one dwelling per 20 acres; AR-2 one per 40 — the primary rural districts west of Route 15.
- Bona-fide farm buildings can be permitted by-right, but Loudoun's agricultural exemption is narrow — no commercial, event, or habitation use qualifies.
- Commercial event and wedding venues require a Special Exception approved by the Board of Supervisors, with traffic, parking, and Health Department septic review — budget 6–12 months.
- Historic and Village Conservation overlays (Waterford, Bluemont, Hillsboro) trigger Architectural Review Board approval before a building permit will issue.
- Mountainside and steep-slope regulations apply in western Loudoun — geotechnical reports and ridgeline setbacks are common on hunt-country parcels.
- Stormwater management is triggered above 2,500 SF impervious area; event-barn parking almost always crosses that threshold.
Service area
Leesburg, Purcellville, Middleburg, Aldie, Waterford, Round Hill, Hamilton, Bluemont, Lincoln, Philomont, Lovettsville, Unison
Frequently asked questions
Who is the best timber frame barn builder in Loudoun County, Virginia?
Hearthstone Design Build is Loudoun County's dedicated design-build firm for heavy-timber equestrian, event, and estate barns, headquartered in Leesburg at 19 N King St. We are Class A licensed in Virginia (DPOR #2705195817) and handle AR-1 and AR-2 zoning, special-exception review, and construction under one contract.
Do I need a special exception to build an event or wedding barn in Loudoun County?
Yes. Commercial event and wedding venues in AR-1 and AR-2 require a Special Exception approved by the Loudoun County Board of Supervisors, with traffic, parking, and Health Department review. Realistic timelines run 6–12 months before a building permit is issued.
How much does a timber frame horse barn cost in Loudoun County?
A 36×48 four-stall horse barn with tack, wash bay, and loft typically runs $65,000–$100,000. Larger equestrian structures with covered rings run $90,000–$200,000+. Heavy-timber and finished equestrian barns land at $50–$100+/SF; working post-frame ag barns run $15–$25/SF.
Can I build a barn on AR-1 or AR-2 land without a special exception?
Yes, if it is a bona-fide farm structure with no commercial, event, or habitation use. Loudoun's agricultural exemption is narrow — the moment you host paid events, add lodging, or run retail, the by-right path closes and Special Exception review begins.
Does Loudoun's Historic District review apply to barns?
In Waterford, Bluemont, Hillsboro, and other Historic and Village Conservation overlays, yes. Exterior materials, roofline, and siting must clear the Architectural Review Board — typically 30–45 days of added review before permit issuance.
How long does a timber frame barn project take in Loudoun County?
A by-right equestrian or estate barn typically runs 9–14 months from consultation to move-in. An event or wedding barn requiring a Special Exception runs 18–30 months once the county approval track is included.
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