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.

B0037 · daylight-optimal · seed 0

B0037-heuristic_nsga2-0-1187

Heuristic-seeded NSGA-IIA+D · meets all 17 benchmark constraints. Brief B0037

Plan drawing of a courtyard on a 19.7 by 27.7 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 38 square metres. Dwelling U1 (1BR) has 5 rooms totalling 53 square metres. Dwelling U2 (1BR) has 5 rooms totalling 90 square metres. Dwelling U3 (1BR) has 5 rooms totalling 90 square metres. Dwelling U4 (2BR) has 6 rooms totalling 90 square metres. Building footprint 202 square metres; open space 334 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.64, daylight 0.64, privacy 0.71, circulation 0.65, carbon 0.74, cost 0.41.
B0037 · heuristic_nsga2 · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a courtyard on a 19.7 by 27.7 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 38 square metres. Dwelling U1 (1BR) has 5 rooms totalling 53 square metres. Dwelling U2 (1BR) has 5 rooms totalling 90 square metres. Dwelling U3 (1BR) has 5 rooms totalling 90 square metres. Dwelling U4 (2BR) has 6 rooms totalling 90 square metres. Building footprint 202 square metres; open space 334 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.64, daylight 0.64, privacy 0.71, circulation 0.65, carbon 0.74, cost 0.41.

Objective vector

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

density
0.639
daylight
0.637
privacy
0.708
circulation
0.655
carbon
0.739
cost
0.407

Reported quantities

FAR proxy (GFA / lot)
0.74
site utilisation
0.766
gross floor area, m²
404.0
footprint, m²
202.0
carbon proxy, kgCO₂e/m² (A1–A3)
354
cost index / m² (unitless)
2.67
worst habitable room, daylight
0.214
circulation share of GFA
16%
open space, net of parking
63%
courtyard void, m²
45.0
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 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
U0studio37.84
U11BR52.75
U21BR89.75
U31BR89.75
U42BR90.46
All 27 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared021.915.10 × 1.45
CORE@1shared circulationshared121.915.10 × 1.45
U1@0#2kitchenU108.63.00 × 2.85
U1@0#3bathroomU105.01.75 × 2.85
U1@0#0entryU103.41.20 × 2.85
U1@0#1livingU1016.45.95 × 2.75
U1@0#4bedroom primaryU1019.35.95 × 3.25
U0@0#0entryU003.62.60 × 1.40
U0@0#3bathroomU005.52.60 × 2.10
U0@0#2kitchenU007.42.60 × 2.85
U0@0#1livingU0021.33.35 × 6.35
U4@1#2kitchenU416.62.95 × 2.25
U4@1#3bathroomU413.81.70 × 2.25
U4@1#0entryU412.91.30 × 2.25
U4@1#1livingU4144.95.95 × 7.55
U4@1#4bedroom primaryU4114.62.70 × 5.40
U4@1#5bedroom secondaryU4117.63.25 × 5.40
U2@0#0entryU205.31.75 × 3.05
U2@0#3bathroomU204.61.50 × 3.05
U2@0#2kitchenU208.12.65 × 3.05
U2@0#1livingU2033.05.90 × 5.60
U2@0#4bedroom primaryU2038.65.90 × 6.55
U3@1#0entryU313.71.20 × 3.05
U3@1#3bathroomU315.21.70 × 3.05
U3@1#2kitchenU319.23.00 × 3.05
U3@1#1livingU3133.05.90 × 5.60
U3@1#4bedroom primaryU3138.65.90 × 6.55

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