B0063 · cost-optimal · seed 1
B0063-sketch-1-1187
Random sketch + repairF′ · meets all 17 benchmark constraints. Brief B0063
Plan drawing of a fourplex on a 14.6 by 26.9 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 75 square metres. Dwelling U1 (1BR) has 5 rooms totalling 90 square metres. Dwelling U2 (2BR) has 6 rooms totalling 67 square metres. Dwelling U3 (2BR) has 6 rooms totalling 97 square metres. Building footprint 179 square metres; open space 213 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.89, daylight 0.41, privacy 0.87, circulation 0.62, carbon 0.82, cost 0.65.
Objective vector
Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.
- density
- 0.891
- daylight
- 0.413
- privacy
- 0.873
- circulation
- 0.619
- carbon
- 0.817
- cost
- 0.650
Reported quantities
- FAR proxy (GFA / lot)
- 0.91
- site utilisation
- 0.929
- gross floor area, m²
- 357.8
- footprint, m²
- 178.9
- carbon proxy, kgCO₂e/m² (A1–A3)
- 326
- cost index / m² (unitless)
- 2.29
- worst habitable room, daylight
- 0.172
- circulation share of GFA
- 17%
- open space, net of parking
- 50%
- courtyard void, m²
- 0.0
- plumbing stacks
- 2
- footprint corners
- 4
- preferred adjacencies met
- 0%
Benchmark constraints
Benchmark rules, not building code.
- C01geometry valid passed
- C02no overlap passed
- C03within buildable passed
- C04min room area passed
- C05min room dimension passed
- C06max room aspect passed
- C07min unit area passed
- C08unit connectivity passed
- C09street access passed
- C10habitable daylight passed
- C11required adjacency passed
- C12forbidden door passed
- C13open space passed
- C14courtyard provision passed
- C15programme complete passed
- C16unit contiguity passed
- C17vertical support passed
Dwellings and rooms
| Dwelling | Type | Area m² | Rooms |
|---|---|---|---|
| U0 | 1BR | 74.8 | 5 |
| U1 | 1BR | 90.0 | 5 |
| U2 | 2BR | 67.4 | 6 |
| U3 | 2BR | 97.4 | 6 |
All 24 rooms
| Room | Type | Dwelling | Storey | m² | w × h m |
|---|---|---|---|---|---|
| CORE@0 | shared circulation | shared | 0 | 14.1 | 11.25 × 1.25 |
| CORE@1 | shared circulation | shared | 1 | 14.1 | 11.25 × 1.25 |
| U1@0#4 | bedroom primary | U1 | 0 | 16.8 | 6.00 × 2.80 |
| U1@0#2 | kitchen | U1 | 0 | 31.2 | 6.00 × 5.20 |
| U1@0#0 | entry | U1 | 0 | 7.1 | 5.25 × 1.35 |
| U1@0#1 | living | U1 | 0 | 16.8 | 5.25 × 3.20 |
| U1@0#3 | bathroom | U1 | 0 | 18.1 | 5.25 × 3.45 |
| U0@0#3 | bathroom | U0 | 0 | 6.5 | 3.95 × 1.65 |
| U0@0#1 | living | U0 | 0 | 19.8 | 3.95 × 5.00 |
| U0@0#0 | entry | U0 | 0 | 4.0 | 1.20 × 3.35 |
| U0@0#4 | bedroom primary | U0 | 0 | 20.4 | 6.10 × 3.35 |
| U0@0#2 | kitchen | U0 | 0 | 24.1 | 7.30 × 3.30 |
| U3@1#0 | entry | U3 | 1 | 16.0 | 6.65 × 2.40 |
| U3@1#1 | living | U3 | 1 | 24.6 | 6.65 × 3.70 |
| U3@1#2 | kitchen | U3 | 1 | 28.6 | 6.65 × 4.30 |
| U3@1#3 | bathroom | U3 | 1 | 7.4 | 1.75 × 4.25 |
| U3@1#5 | bedroom secondary | U3 | 1 | 9.3 | 2.20 × 4.25 |
| U3@1#4 | bedroom primary | U3 | 1 | 11.5 | 2.70 × 4.25 |
| U2@1#4 | bedroom primary | U2 | 1 | 14.8 | 3.30 × 4.50 |
| U2@1#0 | entry | U2 | 1 | 5.8 | 1.30 × 4.50 |
| U2@1#1 | living | U2 | 1 | 14.7 | 4.60 × 3.20 |
| U2@1#2 | kitchen | U2 | 1 | 18.9 | 4.60 × 4.10 |
| U2@1#3 | bathroom | U2 | 1 | 5.4 | 1.90 × 2.85 |
| U2@1#5 | bedroom secondary | U2 | 1 | 7.7 | 2.70 × 2.85 |