Loudoun County Design-Build Contractor for Estate Homes & Outdoor Living
Hearthstone Design Build is a Leesburg-based design-build contractor delivering custom estate homes, timber frame structures, pools, and AR-1/AR-2 hospitality projects across all of Loudoun County — under one contract, with one accountable team.
Our office is at 19 N King Street in downtown Leesburg. We work countywide, from the H-1 historic district to the AR-1 rural overlays at the Blue Ridge.
What a Design-Build Contractor Does in Loudoun County
A design-build contractor delivers architectural design, engineering, and construction under a single contract. In Loudoun County, that integrated model is essential because rural projects have to clear AR-1 or AR-2 zoning, Chesapeake Bay Act stormwater, septic and well permitting, VDOT entrance permits, and (in Leesburg, Middleburg, and Waterford) Board of Architectural Review — long before a building permit is issued.
Hearthstone runs the full stack in-house: feasibility, schematic design, permitting, preconstruction budgeting, scheduling, and field execution. For Loudoun-specific zoning depth, see our Loudoun Zoning Intelligence hub and AR-2 Build Checklist.
Why Design-Build Fits Loudoun County Owners
Loudoun estate projects have more moving parts than a typical suburban build. Rural zoning overlays, dual jurisdiction near town limits, well and septic, VDOT entrance permits, and historic review all need to be sequenced correctly. Design-build solves the coordination problem at the root.
Services in Loudoun County
Estate-scale design-build with deep specialization in timber frame, outdoor living, and AR-1/AR-2 agricultural hospitality. We turn down low-margin renovations to focus on the work we do best.
Custom Estate Homes
Design-build custom homes from $1.5M to $10M+ across Loudoun's AR-1, AR-2, and incorporated town parcels.
Timber Frame Construction
Mortise-and-tenon homes, carriage barns, and pavilions — Loudoun's only specialist design-build firm.
Estate Outdoor Living
Pools, hardscaping, outdoor kitchens, and timber frame pool pavilions — built as one cohesive program.
Wineries & Hospitality
AR-1/AR-2 farm winery, brewery, and event-venue structures with full preconstruction and zoning support.
Owner Representation
For owners who already have an architect — we run the construction side, vendor selection, and budget control.
Rural Land & Estates
Site feasibility, septic and well coordination, and AR-1/AR-2 zoning analysis before you close on land.
Towns & Areas We Serve in Loudoun County
Each Loudoun town has its own character, zoning overlay, and review process. Click through for town-specific detail on permits, project types, and pricing.
Leesburg, VA
County seat, H-1 historic district, dual jurisdiction near town limits
Middleburg, VA
Hunt Country, strict historic district, equestrian estates
Purcellville, VA
Western Loudoun gateway, AR-1 transitions
Round Hill, VA
Rural Blue Ridge foothills, vineyard country
Hamilton, VA
Small-town historic core surrounded by AR-1
Hillsboro, VA
Stone-village character, working farms
Aldie, VA
Route 50 corridor, AR-2 estates, Lark Brewing
Upperville, VA
Hunt Country estates, conservation easements
Loudoun County Permitting & Zoning Realities
Loudoun permits don't move at suburban pace. Rural overlays add environmental review, septic and well drive site planning, and historic districts add weeks before any building permit issues. Knowing the rules upfront prevents six-figure design rework.
For the full AR-1 and AR-2 rule set, see our Loudoun Zoning Intelligence hub. Landowners can also download our Rural Land Guide or book a Zoning Strategy Session.
Typical Loudoun County Project Types
Most of our Loudoun work falls into one of seven categories. Each has its own permitting path, zoning overlay, and budget profile.
Loudoun County Design-Build FAQs
What does a design-build contractor do in Loudoun County?
A design-build contractor delivers architecture, engineering, and construction under one contract — eliminating handoffs between separate design and build teams. In Loudoun County, that integrated model matters because rural projects have to clear AR-1 or AR-2 zoning, Chesapeake Bay Act stormwater, septic and well permitting, VDOT entrance permits, and (in historic districts) Board of Architectural Review before construction begins. Hearthstone runs the entire stack in-house.
How long does it take to build a custom home in Loudoun County?
From signed contract through certificate of occupancy, expect 16–24 months for a Loudoun custom home. That breaks down to 4–6 months of design and engineering, 3–6 months of permitting (longer in historic districts and AR-1 rural overlays), and 10–14 months of construction. Rural parcels with new driveways, wells, and septic add 1–2 months of sitework.
What does it cost to build a custom home in Loudoun County?
Loudoun custom homes start around $450 per square foot for builder-grade construction and run $650–$900+ per square foot for estate-grade design-build with timber frame elements, custom millwork, and high-end finishes. A 5,000 SF estate typically lands in the $3M–$4.5M range, before sitework. See our cost guide for Loudoun County for a full breakdown.
Do you work in AR-1 and AR-2 rural Loudoun?
Yes — AR-1 and AR-2 parcels are our specialty. We handle the additional layers that suburban builders avoid: septic perc tests, well siting, VDOT entrance permits, Chesapeake Bay Act stormwater plans, and the by-right rules for farm wineries and breweries. See our Loudoun Zoning Intelligence hub for the full AR-1/AR-2 rule set.
Which Loudoun towns and areas do you serve?
We work countywide — Leesburg, Middleburg, Purcellville, Round Hill, Hamilton, Hillsboro, Aldie, Upperville, Waterford, Bluemont, Lincoln, Lovettsville, and the unincorporated AR-1/AR-2 districts in between. Our office is at 19 N King Street in downtown Leesburg.
Can you handle wineries, breweries, and farm-based hospitality buildings?
Yes. AR-1 and AR-2 by-right uses include farm wineries, limited breweries, and farm distilleries with associated tasting rooms and event spaces. We've delivered Lark Brewing in Aldie and similar agricultural-hospitality programs. Our Winery & Brewery Build Guide covers the zoning, parking, and septic implications.
More questions in our full FAQ library.
Ready to Build in Loudoun County?
Tell us about your site and your goals. We'll schedule a working consultation, walk the property if appropriate, and lay out a realistic budget and timeline before any contract is signed.