standard tier · 72 briefs · 1,368 runs · results db2e24e

CityFormGen

Generative and optimisation methods for middle housing, compared under matched compute

RESEARCH GENERATIVE-DESIGN BENCHMARK - NOT CONSTRUCTION DOCUMENTATION OR CODE CERTIFICATION.

B0009 · carbon-optimal · seed 0

B0009-heuristic-0~r12

HeuristicA · meets all 17 benchmark constraints. Brief B0009

Plan drawing of a fourplex on a 14.6 by 27.0 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 82 square metres. Dwelling U1 (1BR) has 5 rooms totalling 78 square metres. Dwelling U2 (2BR) has 6 rooms totalling 77 square metres. Dwelling U3 (2BR) has 6 rooms totalling 82 square metres. Building footprint 184 square metres; open space 204 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.43, privacy 0.75, circulation 0.65, carbon 0.82, cost 0.67.
B0009 · heuristic · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a fourplex on a 14.6 by 27.0 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 82 square metres. Dwelling U1 (1BR) has 5 rooms totalling 78 square metres. Dwelling U2 (2BR) has 6 rooms totalling 77 square metres. Dwelling U3 (2BR) has 6 rooms totalling 82 square metres. Building footprint 184 square metres; open space 204 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.43, privacy 0.75, circulation 0.65, carbon 0.82, cost 0.67.

Objective vector

Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.

density
1.000
daylight
0.428
privacy
0.750
circulation
0.649
carbon
0.821
cost
0.667

Reported quantities

FAR proxy (GFA / lot)
0.93
site utilisation
1.000
gross floor area, m²
367.4
footprint, m²
183.7
carbon proxy, kgCO₂e/m² (A1–A3)
325
cost index / m² (unitless)
2.27
worst habitable room, daylight
0.260
circulation share of GFA
16%
open space, net of parking
49%
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

DwellingTypeArea m²Rooms
U01BR81.75
U11BR77.85
U22BR77.46
U32BR82.16
All 24 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared024.21.45 × 16.70
CORE@1shared circulationshared124.21.45 × 16.70
U0@0#2kitchenU0010.51.95 × 5.40
U0@0#3bathroomU003.61.95 × 1.85
U0@0#0entryU002.51.95 × 1.30
U0@0#1livingU0029.93.50 × 8.55
U0@0#4bedroom primaryU0035.14.10 × 8.55
U1@0#0entryU102.31.95 × 1.20
U1@0#3bathroomU105.51.95 × 2.80
U1@0#2kitchenU108.11.95 × 4.15
U1@0#1livingU1028.53.50 × 8.15
U1@0#4bedroom primaryU1033.44.10 × 8.15
U3@1#2kitchenU319.62.00 × 4.80
U3@1#3bathroomU315.22.00 × 2.60
U3@1#0entryU312.42.00 × 1.20
U3@1#1livingU3137.84.40 × 8.60
U3@1#4bedroom primaryU3112.33.15 × 3.90
U3@1#5bedroom secondaryU3114.83.15 × 4.70
U2@1#0entryU212.72.00 × 1.35
U2@1#3bathroomU213.52.00 × 1.75
U2@1#2kitchenU2110.02.00 × 5.00
U2@1#1livingU2139.34.85 × 8.10
U2@1#4bedroom primaryU2113.92.70 × 5.15
U2@1#5bedroom secondaryU218.02.70 × 2.95

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