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.

B0044 · cost-optimal · seed 0

B0044-heuristic-0~r2

HeuristicA · meets all 17 benchmark constraints. Brief B0044

Plan drawing of a duplex on a 13.8 by 20.7 metre lot, 2 storeys, 2 dwellings, 12 rooms. Dwelling U0 (1BR) has 5 rooms totalling 68 square metres. Dwelling U1 (1BR) has 5 rooms totalling 68 square metres. Building footprint 79 square metres; open space 208 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.73, privacy 0.73, circulation 0.65, carbon 0.73, cost 0.45.
B0044 · heuristic · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a duplex on a 13.8 by 20.7 metre lot, 2 storeys, 2 dwellings, 12 rooms. Dwelling U0 (1BR) has 5 rooms totalling 68 square metres. Dwelling U1 (1BR) has 5 rooms totalling 68 square metres. Building footprint 79 square metres; open space 208 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.73, privacy 0.73, circulation 0.65, carbon 0.73, cost 0.45.

Objective vector

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

density
1.000
daylight
0.726
privacy
0.730
circulation
0.652
carbon
0.730
cost
0.448

Reported quantities

FAR proxy (GFA / lot)
0.56
site utilisation
1.000
gross floor area, m²
158.6
footprint, m²
79.3
carbon proxy, kgCO₂e/m² (A1–A3)
357
cost index / m² (unitless)
2.61
worst habitable room, daylight
0.387
circulation share of GFA
17%
open space, net of parking
72%
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
U01BR68.15
U11BR68.15
All 12 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared011.21.45 × 7.70
CORE@1shared circulationshared111.21.45 × 7.70
U0@0#2kitchenU006.21.80 × 3.45
U0@0#3bathroomU005.41.80 × 3.00
U0@0#0entryU002.31.80 × 1.25
U0@0#1livingU0028.13.65 × 7.70
U0@0#4bedroom primaryU0026.23.40 × 7.70
U1@1#2kitchenU117.91.80 × 4.40
U1@1#3bathroomU113.81.80 × 2.10
U1@1#0entryU112.21.80 × 1.20
U1@1#1livingU1125.03.25 × 7.70
U1@1#4bedroom primaryU1129.33.80 × 7.70

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