Timber Frame Barns: The Complete Planning Guide
A timber frame barn is the original timber frame application — and it's still one of the best. Whether you're building a working barn, an event venue, a barndominium, or a workshop, here's how to plan, budget, and build a timber frame barn that lasts generations.
Why Timber Frame for a Barn?
Barns and timber frames are natural partners. Barns need wide-open spans, high ceilings, and rugged durability — exactly what timber framing delivers. A timber frame barn gives you:
- Clear spans of 20-40 feet without interior posts — maneuver tractors, host events, or create wide-open workshop space
- Cathedral ceilings with loft space above — hay storage, a second-floor apartment, or just dramatic overhead volume
- Built to last — traditional timber framing is proven over generations when maintained
- Beauty as a byproduct — exposed joinery and massive timbers turn a utilitarian building into architecture
- Resale and property value — a timber frame barn adds significant value to any property
Barn Frame Kit Options
Our standard frame kits work perfectly as barns — and we can modify any design for barn-specific needs.
| Frame | Size | Kit Price | Best Barn Use |
|---|---|---|---|
| 20×32 Colonial | 640 sq ft | from $29,000 | Small workshop, equipment storage, hobby barn |
| 24×30 King's Post | 720 sq ft | $35,000 | Medium barn, horse barn, studio space |
| 24×27 Arch Truss (2-story) | 1,296 sq ft | $45,000 | Barndominium, event barn, large workshop |
| Custom barn | Any size | $55,000+ | Large equestrian, wedding venue, commercial |
Barn Design Considerations
Roof Pitch
Barn roofs are typically steeper than house roofs — 8:12 to 12:12 pitch. A steeper pitch adds dramatic interior volume and sheds snow better in northern climates. It also gives you more usable loft space. We can adjust roof pitch on any frame.
Doors & Openings
Barns need large openings — sliding barn doors, overhead doors for equipment, or full end-wall openings. We can engineer the frame to accommodate any opening size. Common configurations:
- End-wall sliding doors: 10-14 ft wide, traditional barn entry
- Overhead doors: 9-12 ft tall for tractors, RVs, or boats
- Full-end-wall opening: One entire gable end open — great for event barns or pavilions
Loft Space
Most timber frame barns include a loft — either full second story or open mezzanine. Uses include:
- Hay or equipment storage
- Finished apartment or office
- Event overlook or lounge space
- Future expansion (frame it now, finish later)
Foundation Options
Barns have more foundation flexibility than houses:
- Full foundation: Concrete walls with basement — most expensive, best for finished spaces
- Frost wall: Concrete walls to frost depth with slab floor — moderate cost, good for most applications
- Pier foundation: Concrete piers at post locations — least expensive, good for open-air or storage barns
- Slab on grade: Monolithic concrete slab — common for workshops and equipment barns
Barndominiums: The Hybrid Trend
Barndominiums — barns converted (or designed) as living spaces — are one of the fastest-growing segments in custom building. A timber frame barndominium gives you:
- Open-plan living on the main floor with bedrooms/office in the loft
- Mixed-use space: Workshop on one side, living quarters on the other
- Cost efficiency: Simple rectangular footprint, straightforward roof — less expensive than a complex custom home
- Rustic-modern aesthetic: Exposed timbers, metal roof, concrete floors — popular and Instagram-worthy
Our 24×27 Arch Truss is particularly well-suited for barndominium conversion — the two-story design gives you a clear separation between living and utility spaces.
Barn Cost Breakdown
A complete timber frame barn, weather-tight (frame + foundation + enclosure + roof):
| Barn Type | Total Budget (weather-tight) |
|---|---|
| Small workshop/storage (20×32) | $80,000–$130,000 |
| Medium barn (24×30) | $120,000–$180,000 |
| Large barndominium (24×27 Arch Truss) | $180,000–$300,000 |
| Custom event/ equestrian barn | $250,000–$500,000+ |
These figures assume a frost-wall foundation, SIP enclosure, metal roof, and basic electrical rough-in. Finishing the interior (drywall, plumbing, HVAC, flooring) adds $50–$150 per square foot depending on level of finish.
Permitting a Timber Frame Barn
Barn permitting is generally simpler than a house — but don't skip it. Key differences:
- Agricultural exemptions may apply (varies by county — check local zoning)
- Our engineer-stamped plans cover the structure regardless of building type
- Barndominiums are permitted as residences — same requirements as any house
- Septic and well may be required if the barn has plumbing (kitchenette, bathroom)
The Barn Build Timeline
- Site prep & foundation: 2-4 weeks
- Frame fabrication: 6-8 weeks (concurrent with foundation)
- Frame shipping: 1-2 weeks
- Raising day: 2-4 days
- Enclosure & roof: 2-4 weeks
- Interior finish: 4-16 weeks (depending on scope)
Total: 16-30 weeks from breaking ground to weather-tight. Interior finish timeline is entirely up to you — many barn owners finish interiors over years as budget and time allow.
Real Barn Ideas
The Hobby Workshop
20×32 Colonial with pier foundation, open interior, loft for lumber storage. Timber frame with metal roof and board-and-batten siding. $90,000 weather-tight.
The Horse Barn
24×30 King's Post with full foundation, 4 stalls on one side, tack room, hay loft above. Sliding barn doors on both gable ends. $150,000 weather-tight plus stall work.
The Event Barn
Custom 30×50 frame with hammer-beam trusses for maximum open span. Full-end-wall opening to a patio. Loft for band/DJ. $300,000+ weather-tight.
The Barndominium
24×27 Arch Truss with frost-wall foundation. Main floor: open kitchen/living/dining. Second floor: two bedrooms, one bath. Metal roof, board-and-batten siding. $250,000 finished.
Financing a Barn Build
Barn financing options:
- Construction loan: Same as a house — covers land, frame, and build
- Home equity: If you own the land and home, tap equity for the barn
- Farm Credit / USDA loans: Agricultural buildings may qualify for special financing
- Cash + phased build: Frame and weather-tight first, finish interiors as cash allows
Getting Started
Every barn project starts the same way: tell us what you're building and where. We'll recommend a frame, provide a detailed quote (kit + shipping), and walk you through the next steps. There's no cost or commitment for an initial consultation.
Ready to build your barn? Contact us with your vision — or browse our frame kits and see which barn design fits your property.