Modern Barndominium House Plan | 3 Bed 2 Bath with Garage

This 79'x42' modern barndominium house plan delivers 3,318 sq ft under a single gable roof, pairing roughly 2,129 sq ft of open-concept, single-story living with a 1,189 sq ft attached garage and workshop. Three bedrooms, two full baths, and a covered front porch sit behind vertical barn-style cladding and a black metal roof, giving you the shop-plus-home layout that makes barndominiums so practical for rural acreage and owner-built projects.

Inside, the living room measures 19'9" x 15'3" and opens directly into a 19'9" x 18'11" dining and kitchen area anchored by a large center island, with a 4'6" x 5' walk-in pantry just off the cooking zone. The master suite occupies its own wing at 17' x 14', with a private bath featuring a soaking tub and two walk-in closets, one at a generous 17' x 7'11" and a second at 6'6" x 8'. On the opposite side of the home, two secondary bedrooms measure 11' x 10'6" each with their own 7' x 2' closets, sharing a 7' x 7'6" full bath. A dedicated laundry closet holds side-by-side washer and dryer units. The garage and shop runs 29'2" x 41'2" with two oversized 10'11" x 9' overhead doors, deep enough for full-size trucks, trailers, equipment storage, or a working home business.

Construction is built around a concrete slab foundation with a documented load-bearing wall layout, concrete footings, capillary break, perforated perimeter drainage, 2" rigid board insulation at the foundation, and an under-slab vapor barrier. Walls are framed in 2x6 wood studs with 2x4 interior partitions and dimensional 2x6 and 2x8 headers. The gable roof is framed with 2x10 and 2x12 rafters over 5/8" OSB or plywood decking, finished in black corrugated metal, and the drawings detail several insulation strategies including closed-cell spray foam, rigid polyisocyanurate above deck, and standard batt assemblies. Building height reaches 19'8" at the peak, with a 10'6" seal level and 8'6" window and door opening height. Rain-screen siding details, housewrap drainage plane, Z-flashing, termite shield, and step-by-step window installation details are all included.

This plan suits families who want single-level living without stairs, owner-builders looking for a cost-efficient path to a large home, tradespeople and hobbyists who need real workshop square footage attached to the house, and buyers building on rural land or acreage. It also works well as a multigenerational home, a horse or farm property residence, or a long-term rental where the shop space adds rental value. Because there are no stairs anywhere in the layout, it's a strong candidate for aging in place.

Plans are drawn to 2022 California residential, plumbing, and electrical codes with wind loads per ASCE 7-16, and area calculations follow ANSI Standard Z765. They are not sealed or engineered for other jurisdictions and do not meet earthquake seismic or hurricane wind code requirements. Before permitting or construction, have a licensed local engineer or architect review the drawings and confirm spans, framing, and foundation details against your local code and site conditions.