Now Hiring: Experienced Carpenters & CraftsmenApply Now
    Hearthstone Design Build — Licensed Class A Design-Build Firm, Leesburg Virginia
    HearthstoneDesign Build
    Loudoun County, Virginia

    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.

    Request a Consultation(571) 556-1900

    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.

    One contract, one accountable team — no architect-versus-builder finger-pointing
    Earlier cost certainty — preliminary budgets locked before drawings finalize
    Faster Loudoun County permit cycles — we coordinate zoning, BAR, and stormwater in parallel
    AR-1 and AR-2 zoning fluency — we work in rural Loudoun every week
    In-house preconstruction — feasibility, septic perc, well siting, and entrance permits handled together
    Estate-grade execution — focused on the $1.5M+ tier where design-build saves the most

    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.

    Explore All Services

    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.

    AR-1 (Agricultural Rural-1): 20-acre minimum lot size, restrictive site coverage, by-right uses include farm wineries and breweries
    AR-2 (Agricultural Rural-2): 10-acre minimum, more flexible than AR-1 but still rural in character
    Loudoun stormwater: most rural builds trigger Chesapeake Bay Act preservation areas — engineered plans required
    Septic and well: required on most rural parcels; perc tests and 100-foot setbacks drive site planning
    VDOT entrance permits: required for any new driveway connection to a state-maintained road
    Historic districts (Leesburg H-1, Middleburg, Waterford): BAR review adds 4–8 weeks before building permit
    Typical rural permit timeline: 3–6 months from complete submission to building permit issued

    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.

    How to Build on Rural Land in Loudoun

    The full 7-step playbook from soil test through C of O.

    Cost to Build in Loudoun County

    Itemized 2026 estate pricing — $1.5M, $3.5M, $6.7M scenarios.

    AR-1 vs AR-2 vs A-3 Zoning

    Side-by-side comparison so you choose the right parcel.

    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.

    Custom estate homes ($1.5M–$10M+) on 1–50 acre Loudoun parcels
    Timber frame carriage barns, equestrian facilities, and event pavilions
    Pool, pool-house, and full backyard estate complexes (gunite, infinity, natural)
    Outdoor kitchens, hardscaping, fire features, and timber frame pool pavilions
    Farm wineries, breweries, and AR-1 hospitality structures
    Detached guest houses, ADUs, and pool houses (post-2023 amendment)
    Whole-property masterplans combining residence + outdoor program + agricultural buildings
    See Recent WorkLoudoun Timber FrameEstate Outdoor Living

    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.

    Request a ConsultationBook a Zoning Strategy Session

    Recent Work in Loudoun County

    Continue Exploring

    More in Service Areas

    Related Reading

    Before You Build on Rural Land in Northern Virginia

    Free planning guide — zoning, permitting, septic, timelines, and cost factors.

    Get the Guide Schedule Consultation

    Explore Hearthstone Design Build

    We value your privacy

    We use cookies to enhance your browsing experience, analyze site traffic, and personalize content. By clicking "Accept All", you consent to our use of cookies. Learn more about our privacy policy

    Hearthstone Design Build is a Loudoun County, VA design-build firm for custom estate homes, timber frame, gunite pools, and AR-1 and AR-2 hospitality projects.

    Loudoun County, Virginia

    Hearthstone Design Build in Loudoun County

    Hearthstone Design Build is a custom timber frame home builder and design-build firm based in Leesburg, Virginia, serving Loudoun County for estate-scale residential construction, timber frame homes, carriage barns, estate pools, and outdoor living. Hearthstone Design Build is a custom timber frame home builder serving Loudoun County, Virginia. We design and build timber frame homes, carriage barns, equestrian facilities, and timber frame pavilions across Leesburg, Middleburg, Purcellville, Round Hill, Hamilton, and the AR-1/AR-2 rural overlays of western Loudoun.

    Every project runs under one contract with one accountable team — design, engineering, permitting, and field execution sequenced in parallel to compress the schedule and lock cost before drawings are finalized.

    Loudoun County Zoning & Permitting

    Most of our timber frame estate work lands on AR-1 or AR-2 acreage — minimum lot sizes, well and septic, VDOT entrance permits, and Chesapeake Bay Act stormwater drive the preconstruction schedule. Read the full breakdown in our Loudoun Zoning Intelligence hub and the AR-1 vs AR-2 vs A-3 zoning comparison.

    Feasibility reviews for Loudoun County parcels cover buildable envelope (setbacks, easements, slopes, floodplain), soil suitability for septic, well placement, VDOT entrance permitting, and stormwater obligations. We sequence these in parallel with schematic design so the permit clock starts as early as possible.

    For the full Loudoun rural framework — AR-1, AR-2, and A-3 rules, overlays, and easements — see the Loudoun Zoning Intelligence hub. Timber frame owners should also read how to select a timber frame species for a Virginia home before schematic design.

    Pricing & Timeline

    Custom estate homes in Loudoun County typically run $450–$750+ per square foot fully finished (ultra-luxury estates exceed $750), with projects between $1.5M and $10M+. Timber frame homes sit at the higher end of that range. Total schedules run 14–22 months from contract to certificate of occupancy, with permitting timelines specific to Loudoun County review cycles.

    See our cost-to-build Northern Virginia guide for a full cost breakdown and our design-build vs. general contractor comparison for delivery-model context.

    Building in a Specific Loudoun Town?

    Next Steps

    Hearthstone Design Build — Custom Timber Frame Home Builder, Northern Virginia

    Hearthstone Design Build is a licensed Class A custom timber frame home builder and design-build firm based in Leesburg, Virginia. We design, engineer, permit, and construct timber frame homes, carriage barns, pavilions, and estate outdoor living across Loudoun, Fauquier, and Clarke counties.