Renzo piano-style sawtooth-roofed detached house

This is a two-story detached house that follows the architectural language of Renzo Piano. It features a lightweight steel frame mounted on a 1,200mm modular grid, treating the roof as a "light-filtering machine" where the structure, fixtures, and shading are fully exposed rather than concealed. Instead of heavy walls, slender columns, large glass surfaces, and deep eaves blur the boundary between the interior and exterior. Designed for a family of three to four, the gross floor area is approximately 180㎡. The first floor serves as a common level for the living room, dining room, and kitchen; its south-facing facade is floor-to-ceiling glass and seamlessly connects to a 3,000mm deep deck. The second floor is a private level housing three bedrooms, with a reduced building footprint compared to the first floor to leave a spacious yard. The roof is a sawtooth-shaped skylight featuring repeating north-facing toplights.
Against a person
Why these numbers
- 400m2site_area
Site area: Unconfirmed. Proceeding with an assumed 400㎡, typical for suburban single-family residential lots, to be replaced with measured values upon confirmation.
- 20000mmsite_width
Boundary dimensions and shape: Unconfirmed. Assumed regular lot of 20,000mm × 20,000mm.
- 20000mmsite_depth
Boundary dimensions and shape: Unconfirmed. Assumed regular lot of 20,000mm × 20,000mm.
- 50%building_coverage_ratio
Zoning: Unconfirmed. Assumed as First-Class Residential District. Building coverage ratio and floor area ratio must be reconfirmed with the relevant municipal urban planning ordinance, and assumed values shall not be used as confirmed figures.
- 100%floor_area_ratio
Zoning: Unconfirmed. Assumed as First-Class Residential District. Building coverage ratio and floor area ratio must be reconfirmed with the relevant municipal urban planning ordinance, and assumed values shall not be used as confirmed figures.
- 4200mmliving_ceiling_height
The primary living space (living room and dining area) on the first floor shall have floor-to-ceiling glazing across the entire south-facing facade, connecting seamlessly with the exterior deck without level difference.










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