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.

B0067 · best infeasible · seed 0

B0067-heuristic-0

HeuristicA · violates 2 of 17 benchmark constraints (2 violations). Brief B0067

Plan drawing of a courtyard on a 21.8 by 22.2 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 32 square metres. Dwelling U1 (1BR) has 5 rooms totalling 48 square metres. Dwelling U2 (1BR) has 5 rooms totalling 96 square metres. Dwelling U3 (1BR) has 5 rooms totalling 96 square metres. Dwelling U4 (2BR) has 6 rooms totalling 80 square metres. Building footprint 198 square metres; open space 290 square metres. This design is infeasible; failing categories: bad proportion, insufficient area. Objective scores, higher is better: density 0.76, daylight 0.40, privacy 0.70, circulation 0.69, carbon 0.75, cost 0.42.
B0067 · heuristic · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a courtyard on a 21.8 by 22.2 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 32 square metres. Dwelling U1 (1BR) has 5 rooms totalling 48 square metres. Dwelling U2 (1BR) has 5 rooms totalling 96 square metres. Dwelling U3 (1BR) has 5 rooms totalling 96 square metres. Dwelling U4 (2BR) has 6 rooms totalling 80 square metres. Building footprint 198 square metres; open space 290 square metres. This design is infeasible; failing categories: bad proportion, insufficient area. Objective scores, higher is better: density 0.76, daylight 0.40, privacy 0.70, circulation 0.69, carbon 0.75, cost 0.42.

Objective vector

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

density
0.756
daylight
0.402
privacy
0.701
circulation
0.687
carbon
0.750
cost
0.416

Reported quantities

FAR proxy (GFA / lot)
0.82
site utilisation
0.841
gross floor area, m²
396.1
footprint, m²
198.1
carbon proxy, kgCO₂e/m² (A1–A3)
350
cost index / m² (unitless)
2.65
worst habitable room, daylight
0.143
circulation share of GFA
14%
open space, net of parking
59%
courtyard void, m²
42.0
plumbing stacks
5
footprint corners
8
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 failedbedroom_primary aspect 2.46 > 2.40
  • C07min unit area failedstudio 31.9 < 33.0 m^2
  • 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
U0studio31.94
U11BR48.25
U21BR95.85
U31BR95.85
U42BR80.16
All 27 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared022.117.70 × 1.25
CORE@1shared circulationshared122.117.70 × 1.25
U1@0#2kitchenU106.53.60 × 1.80
U1@0#3bathroomU103.31.85 × 1.80
U1@0#0entryU102.21.20 × 1.80
U1@0#1livingU1018.36.65 × 2.75
U1@0#4bedroom primaryU1018.06.65 × 2.70
U0@0#2kitchenU006.13.40 × 1.80
U0@0#3bathroomU003.62.00 × 1.80
U0@0#0entryU002.31.25 × 1.80
U0@0#1livingU0019.96.65 × 3.00
U4@1#2kitchenU415.72.85 × 2.00
U4@1#3bathroomU415.22.60 × 2.00
U4@1#0entryU412.41.20 × 2.00
U4@1#1livingU4126.66.65 × 4.00
U4@1#4bedroom primaryU4118.13.00 × 6.05
U4@1#5bedroom secondaryU4122.13.65 × 6.05
U2@0#0entryU202.31.20 × 1.90
U2@0#3bathroomU205.32.80 × 1.90
U2@0#2kitchenU207.53.95 × 1.90
U2@0#1livingU2025.07.95 × 3.15
U2@0#4bedroom primaryU2055.67.95 × 7.00
U3@1#0entryU312.31.20 × 1.90
U3@1#3bathroomU313.31.75 × 1.90
U3@1#2kitchenU319.55.00 × 1.90
U3@1#1livingU3125.07.95 × 3.15
U3@1#4bedroom primaryU3155.67.95 × 7.00

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