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.

B0041 · privacy-optimal · seed 0

B0041-nsga2-0-1278

NSGA-IID · meets all 17 benchmark constraints. Brief B0041

Plan drawing of a triplex on a 15.9 by 25.9 metre lot, 2 storeys, 3 dwellings, 20 rooms. Dwelling U0 (2BR) has 6 rooms totalling 78 square metres. Dwelling U1 (2BR) has 6 rooms totalling 94 square metres. Dwelling U2 (2BR) has 6 rooms totalling 172 square metres. Building footprint 187 square metres; open space 232 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.74, daylight 0.39, privacy 0.89, circulation 0.66, carbon 0.85, cost 0.67.
B0041 · nsga2 · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a triplex on a 15.9 by 25.9 metre lot, 2 storeys, 3 dwellings, 20 rooms. Dwelling U0 (2BR) has 6 rooms totalling 78 square metres. Dwelling U1 (2BR) has 6 rooms totalling 94 square metres. Dwelling U2 (2BR) has 6 rooms totalling 172 square metres. Building footprint 187 square metres; open space 232 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.74, daylight 0.39, privacy 0.89, circulation 0.66, carbon 0.85, cost 0.67.

Objective vector

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

density
0.736
daylight
0.393
privacy
0.889
circulation
0.656
carbon
0.853
cost
0.667

Reported quantities

FAR proxy (GFA / lot)
0.91
site utilisation
0.828
gross floor area, m²
374.4
footprint, m²
187.2
carbon proxy, kgCO₂e/m² (A1–A3)
313
cost index / m² (unitless)
2.27
worst habitable room, daylight
0.274
circulation share of GFA
14%
open space, net of parking
55%
courtyard void, m²
0.0
plumbing stacks
4
footprint corners
4
preferred adjacencies met
100%

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
U02BR78.46
U12BR93.96
U22BR172.36
All 20 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared014.911.45 × 1.30
CORE@1shared circulationshared114.911.45 × 1.30
U0@0#5bedroom secondaryU0010.63.25 × 3.25
U0@0#3bathroomU006.82.10 × 3.25
U0@0#4bedroom primaryU0019.35.35 × 3.60
U0@0#1livingU0024.46.10 × 4.00
U0@0#0entryU006.82.40 × 2.85
U0@0#2kitchenU0010.53.70 × 2.85
U1@0#3bathroomU103.92.25 × 1.75
U1@0#0entryU105.83.30 × 1.75
U1@0#4bedroom primaryU1016.95.55 × 3.05
U1@0#5bedroom secondaryU1018.95.55 × 3.40
U1@0#1livingU1032.55.90 × 5.50
U1@0#2kitchenU1015.95.90 × 2.70
U2@1#0entryU2110.45.60 × 1.85
U2@1#1livingU2143.45.60 × 7.75
U2@1#5bedroom secondaryU2130.55.60 × 5.45
U2@1#2kitchenU2133.95.85 × 5.80
U2@1#3bathroomU2114.65.85 × 2.50
U2@1#4bedroom primaryU2139.55.85 × 6.75

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