# Butterfly-Roof ADUs The Swoop ADU Adds a Second Home Through an Inverted Gable Design By Amy Duong | Published 2026-06-03 | Art & Design Source: Trend Hunter, https://www.trendhunter.com/trends/swoop-adu References: [dezeen](https://www.dezeen.com/2026/06/02/swoop-adu-out-of-line-new-jersey/) & [outoflineoffice](https://outoflineoffice.com/)  The Swoop [ADU](https://www.trendhunter.com/trends/adu-carpinteria) is a 750-square-foot accessory dwelling unit designed by Brooklyn-based studio Out of [Line](https://www.trendhunter.com/trends/blackpink-original-tamagotchi) in South Orange, New Jersey. The Swoop ADU adds two bedrooms and a bathroom to an existing split-level house while creating a separate residence for a family member. Rather than repeating the neighborhood’s common gabled roof forms, the design uses an [inverted gable](https://www.trendhunter.com/trends/a-house-with-an-inverted-roof) that creates a sheltered entry and defines the building’s identity. A small terrace connects the new structure to the original home while maintaining privacy between the two residences. The project updates both buildings through a shared material palette of charcoal stucco and light grey fiber-cement panels. The ADU introduces a butterfly roof, rotated siding, and a continuous façade line that moves across windows and openings. Inside, a double-height living area faces the garden through a large picture window and glass door. Image Credit: Rafael Gamo ## Trend Insights (Trend Hunter) - Score: 4.1/10 - Popularity: 37% | Activity: 7% | Freshness: 79% - Audience gender: 50% men, 50% women - Primary generations: Gen Z, Millennial, Gen X - Top markets: Europe ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Art & Design](https://www.trendhunter.com/artdesign) ## Key Themes ### Why This Trend Is Growing - **Inverted-gable Architecture:** Represents a shift from traditional gabled forms to sculptural inverted roofs that support compact, identity-driven secondary dwellings. - **Compact Multi-generational Living:** Signals growing demand for space-efficient ADUs that accommodate multi-generational households within existing property footprints. - **Integrated Façade Systems:** Highlights demand for continuous exterior systems that unify old and new structures while offering streamlined assembly and maintenance potential. ### Industries Being Reshaped - **Residential Construction:** Faces the emergence of small standalone residences that alter project scopes, permitting landscapes, and onsite sequencing expectations. - **Prefab ADU Manufacturing:** Sees opportunity in modular, transportable ADUs that adopt inverted-roof geometry for distinctive, compact floorplates. - **Architectural Materials:** Is influenced by coordinated palettes and rotated cladding that create demand for integrated panel systems with durable, low-maintenance finishes. ## Related on Trend Hunter - [Upholstered Cat Trees](https://www.trendhunter.com/trends/chunky-cat-tree.md) - [Compact Floorstanding Speakers](https://www.trendhunter.com/trends/model-four.md) - [Mesh Slip-On Sneakers](https://www.trendhunter.com/trends/mexico-66-sabot.md) - [Moccasin Trail Sneakers](https://www.trendhunter.com/trends/prophecy-ring-moc.md) - [Leather Stealthy Sandals](https://www.trendhunter.com/trends/biotop.md) - [Character Graphic T-Shirts](https://www.trendhunter.com/trends/zofriends-collection.md) - [Urushi Lacquer Watches](https://www.trendhunter.com/trends/gfj-calibre-135.md) - [Minimalist Aluminum Chess Sets](https://www.trendhunter.com/trends/stoa-chess-set.md) - [Modular Space-Age Lighting](https://www.trendhunter.com/trends/retrocore.md)