{"product_id":"twin-barndominium-adu-house-plan","title":"4 Beds 3 Baths Twin Barndominium with ADU","description":"\u003cp\u003e\u003cstrong\u003eTwo barns, one brilliant idea.\u003c\/strong\u003e The Twin is a modern \u003cstrong\u003ebarndominium house plan\u003c\/strong\u003e with a twist: a main residence and a separate \u003cstrong\u003eADU\u003c\/strong\u003e (accessory dwelling unit) joined by a screen porch — so you get four bedrooms, room for extended family, and a built-in option for rental income, all wrapped in one striking black barn-style design.\u003c\/p\u003e\n\n\u003cp\u003eEvery square foot is designed to be functional while pulling in the beauty of the landscape. The sleek black siding and roof contrast beautifully with light wood accents, and the simple, conventional wood-framed forms keep construction straightforward and budget-friendly — standard door and window sizes mean you can source materials locally.\u003c\/p\u003e\n\n\u003ch2\u003eThe main residence\u003c\/h2\u003e\n\u003cp\u003eInside, the living and dining areas open up under high vaulted cathedral ceilings, with large double-height windows framing the view and a sliding door to the deck. The L-shaped kitchen has a center island and a proper pantry, plus a ground-floor powder room, a coat closet, and clever under-stair storage. There's even a dedicated dog-washing station in the laundry\/mudroom, and a master suite with a walk-in closet and a bathroom with a separate wet room for the shower and tub.\u003c\/p\u003e\n\u003cp\u003eUpstairs you'll find two more bedrooms with generous closets, two home offices built for the work-from-home era, a play area, and a bathroom. The flexible play space can be enclosed as a game room — or finished to make this a true four-bedroom house.\u003c\/p\u003e\n\n\u003ch2\u003eThe screen porch\u003c\/h2\u003e\n\u003cp\u003eA 164 sqft screen porch connects the two structures and extends the living space outdoors — perfect for entertaining or dinner parties, with protection from mosquitoes and rain on those beautiful summer days.\u003c\/p\u003e\n\n\u003ch2\u003eThe ADU — built for multigenerational living and rental income\u003c\/h2\u003e\n\u003cp\u003eThe standout feature is the attached \u003cstrong\u003eADU\u003c\/strong\u003e. It packs a multi-functional room (a bedroom with space for a work desk), a kitchenette, a bath, and a cozy loft bedroom — ideal for aging parents, adult kids, guests, or rental income. A separate workshop and storage area with a French garage door rounds it out. Both ADU spaces are independent of the main house and accessed from outside, making this one of the most practical \u003cstrong\u003emultigenerational house plans\u003c\/strong\u003e and \u003cstrong\u003eADU house plans\u003c\/strong\u003e around.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're building a forever family home or an income-generating property, the Twin is a versatile, eco-friendly \u003cstrong\u003ebarn house plan\u003c\/strong\u003e that adapts to how you actually live.\u003c\/p\u003e\n\n\u003ch2\u003ePlan specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain house ground floor:\u003c\/strong\u003e 1,299 sqft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADU ground floor:\u003c\/strong\u003e 420 sqft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScreen porch:\u003c\/strong\u003e 164 sqft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHouse footprint:\u003c\/strong\u003e 55' L × 26'-3\" W × 30'-4\" H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADU footprint:\u003c\/strong\u003e 15' L × 31' W × 19'-6\" H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBedroom 1 (master):\u003c\/strong\u003e 12'-3\" × 14'-4\" (walk-in closet + wet-room bath)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBedroom 2:\u003c\/strong\u003e 10'-9\" × 12'-7\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBedroom 3:\u003c\/strong\u003e 10'-9\" × 12'-7\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADU loft bedroom:\u003c\/strong\u003e 14'-1\" × 7'-5\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiving room:\u003c\/strong\u003e 12' × 16' (vaulted, double-height windows)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDining room:\u003c\/strong\u003e 13'-4\" × 11'-4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKitchen:\u003c\/strong\u003e 10' × 15'-6\" (L-shaped with island)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePantry:\u003c\/strong\u003e 4'-8\" × 6'\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeck:\u003c\/strong\u003e 11' × 3'\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBathroom 1:\u003c\/strong\u003e 10'-7\" × 9'\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBathroom 2:\u003c\/strong\u003e 10'-9\" × 5'-3\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADU bathroom:\u003c\/strong\u003e 8'-8\" × 5'-1\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaundry \u0026amp; mudroom:\u003c\/strong\u003e 10'-7\" × 6'-11\" (with dog-washing station)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHVAC:\u003c\/strong\u003e Mini-split system with HRV and ERV\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho it's for\u003c\/h2\u003e\n\u003cp\u003eMultigenerational families, work-from-home households, hosts, and investors shopping \u003cstrong\u003ebarndominium house plans\u003c\/strong\u003e or \u003cstrong\u003eADU house plans\u003c\/strong\u003e who want flexibility, four bedrooms, and rental potential without giving up modern style.\u003c\/p\u003e\n\n\u003ch2\u003eCompare related house plans\u003c\/h2\u003e\n\u003cp\u003eWant a lakeside barndominium? See the \u003ca href=\"\/products\/lake-barndominium-house-plan-4-bed-2300-sqft\"\u003e4 bed lake barndominium house plan\u003c\/a\u003e. Prefer single-level living? Check the \u003ca href=\"\/products\/3-bed-2-bath-ranch-house-plan-1700-sqft\"\u003e3 bed 2 bath ranch house plan\u003c\/a\u003e. Looking for a modern cabin? Explore the \u003ca href=\"\/products\/2-bed-modern-cabin-house-plan-1598-sqft\"\u003e2 bed modern cabin \u0026amp; lake house plan\u003c\/a\u003e or the \u003ca href=\"\/products\/modern-loft-house-plan-3-bed-2005-sqft\"\u003e3 bed modern loft house plan\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eDoes this plan include an ADU?\u003c\/h3\u003e\n\u003cp\u003eYes. It includes a separate accessory dwelling unit (ADU) with a kitchenette, a bathroom, a multi-functional bedroom\/office space, and a cozy loft bedroom, plus a workshop and storage area with a French garage door. The ADU is independent of the main house and accessed from outside.\u003c\/p\u003e\n\u003ch3\u003eHow does it get to four bedrooms?\u003c\/h3\u003e\n\u003cp\u003eThe main residence has three bedrooms (a ground-floor master plus two upstairs), and the ADU adds a fourth with its loft bedroom. A flexible upstairs play area can also be enclosed as an additional room.\u003c\/p\u003e\n\u003ch3\u003eIs it good for multigenerational living or rental income?\u003c\/h3\u003e\n\u003cp\u003eYes — the self-contained ADU makes it ideal for aging parents, adult children, or guests, and it can just as easily be rented out for income since it has its own entrance, kitchenette, and bath.\u003c\/p\u003e\n\u003ch3\u003eWhat is the \"Twin\" design?\u003c\/h3\u003e\n\u003cp\u003eThe Twin is two simple barn-style structures — the main house and the ADU — joined by a screen porch, creating a distinctive modern-meets-traditional look.\u003c\/p\u003e\n\u003ch3\u003eHow many bathrooms are there?\u003c\/h3\u003e\n\u003cp\u003eThere are two full bathrooms in the main house plus a ground-floor powder room, and a separate bathroom in the ADU.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the Study Plans and Building Plans packages?\u003c\/h3\u003e\n\u003cp\u003eThe Study Plans Package is a preliminary set for reviewing the design, sharing with family, and getting early build estimates. The Building Plans Package is the full, detailed construction set your builder uses to permit and build the home.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does this plan include an ADU?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. It includes a separate accessory dwelling unit (ADU) with a kitchenette, a bathroom, a multi-functional bedroom\/office space, and a cozy loft bedroom, plus a workshop and storage area with a French garage door. The ADU is independent of the main house and accessed from outside.\"}},{\"@type\":\"Question\",\"name\":\"How does it get to four bedrooms?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The main residence has three bedrooms (a ground-floor master plus two upstairs), and the ADU adds a fourth with its loft bedroom. 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The Building Plans Package is the full, detailed construction set your builder uses to permit and build the home.\"}}]}\u003c\/script\u003e","brand":"DesignwithFrank","offers":[{"title":"Study Plans","offer_id":44544124911803,"sku":"0140","price":589.0,"currency_code":"USD","in_stock":true},{"title":"Building Plans","offer_id":44544124944571,"sku":"0441","price":3600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0528\/8394\/7707\/products\/V01_4K_2.jpg?v=1679605469","url":"https:\/\/www.designwithfrank.com\/products\/twin-barndominium-adu-house-plan","provider":"DesignwithFrank","version":"1.0","type":"link"}