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.

B0026 · density-optimal · seed 0

B0026-heuristic-0~r0

HeuristicA · meets all 17 benchmark constraints. Brief B0026

Plan drawing of a duplex on a 13.6 by 18.3 metre lot, 2 storeys, 2 dwellings, 13 rooms. Dwelling U0 (1BR) has 5 rooms totalling 76 square metres. Dwelling U1 (2BR) has 6 rooms totalling 76 square metres. Building footprint 85 square metres; open space 160 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.63, privacy 0.76, circulation 0.67, carbon 0.74, cost 0.49.
B0026 · heuristic · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a duplex on a 13.6 by 18.3 metre lot, 2 storeys, 2 dwellings, 13 rooms. Dwelling U0 (1BR) has 5 rooms totalling 76 square metres. Dwelling U1 (2BR) has 6 rooms totalling 76 square metres. Building footprint 85 square metres; open space 160 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.63, privacy 0.76, circulation 0.67, carbon 0.74, cost 0.49.

Objective vector

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

density
1.000
daylight
0.627
privacy
0.759
circulation
0.669
carbon
0.740
cost
0.490

Reported quantities

FAR proxy (GFA / lot)
0.69
site utilisation
1.000
gross floor area, m²
171.0
footprint, m²
85.5
carbon proxy, kgCO₂e/m² (A1–A3)
353
cost index / m² (unitless)
2.54
worst habitable room, daylight
0.296
circulation share of GFA
15%
open space, net of parking
66%
courtyard void, m²
0.0
plumbing stacks
1
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
U01BR75.55
U12BR75.56
All 13 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared010.01.20 × 8.30
CORE@1shared circulationshared110.01.20 × 8.30
U0@0#2kitchenU007.91.85 × 4.25
U0@0#3bathroomU005.31.85 × 2.85
U0@0#0entryU002.21.85 × 1.20
U0@0#1livingU0027.83.35 × 8.30
U0@0#4bedroom primaryU0032.43.90 × 8.30
U1@1#2kitchenU119.81.90 × 5.15
U1@1#3bathroomU113.31.90 × 1.75
U1@1#0entryU112.71.90 × 1.40
U1@1#1livingU1134.44.15 × 8.30
U1@1#4bedroom primaryU1114.53.05 × 4.75
U1@1#5bedroom secondaryU1110.83.05 × 3.55

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