Roof pitch by style: 4-6:12 ranch/contemporary; 6-8:12 colonial/farmhouse; 8-12:12 craftsman/Tudor; 12:12+ saltbox/A-frame
ROT/EXT-ROOF-PITCH-BY-STYLEDescription
Architectural style dictates roof pitch. Ranch + contemporary: 4-6:12 (gentle, horizontal feel). Colonial + modern farmhouse: 6-8:12 (mid-range). Craftsman + Tudor: 8-12:12 (steeper, more visible roof presence). Saltbox + A-frame: 12:12+ (dominant roof). Mixing styles + pitches incorrectly produces a 'no specific style' look — pick one and commit.
Why this exists
Roof pitch is the second-largest aesthetic decision after footprint shape. Architects designing residential should pick the pitch BEFORE drawing elevations to avoid a pitched-only-because elevation.
Categories
Source
Solver enforcement
Browsable only — the solver does not currently enforce this directive (no spec-level data to check against). This entry exists so the architect personas can cite it in conversation and the user can read what the rule says.
Related directives
- Living room minimum size · LIVING-ROOM-SIZE
- Family room minimum size · FAMILY-ROOM-SIZE
- Dining room sizing · DINING-ROOM-SIZE
- Avoid plumbing on exterior walls in cold climates · PLUMBING-AGAINST-EXTERIOR-WALLS
- Circulation as rooms · CIRCULATION-AS-ROOMS
Last reviewed 2026-05-15.